A bracket for vehicle and new energy heavy truck

Abstract

The utility model relates to the technical field of bracket structure, disclose a kind of vehicle bracket and new energy heavy truck, including base and frame, frame includes multiple horizontal side-by-side arrangement and fixedly connected between two two frame body, and fixedly connected with horizontal reinforcing portion between adjacent frame body;Base and frame body are fixedly connected, and base and frame body are fixedly connected with vertical reinforcing portion between it. The utility model patent solves the problem of heavy weight, high cost and low installation and fixing efficiency of bracket for installing electric heavy truck battery pack in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of bracket structure technology, specifically to a vehicle bracket and a new energy heavy-duty truck. Background Technology

[0002] With technological advancements, new energy electric heavy-duty trucks have been developed and put into use. The battery pack structure of these trucks is mounted on a bracket, which is connected to the vehicle's main beam. This bracket structure serves to install, stabilize, and protect the battery pack. A conventional bracket consists of a frame and a base. In actual installation, the frame is first fixed to the base, then the base is fixed to the electric heavy-duty truck's main beam using bolts and welding. Finally, the battery pack is fixed to the frame.

[0003] Existing bases and frames are generally formed by welding steel components. Although steel structures have high strength and can provide stable support and fixation for the battery pack, the use of steel components in practical applications presents the following problems: 1. Steel components require cutting and processing existing steel or profiles according to the structural dimensions of the base and frame, and then fixing each component using welding or other methods. This not only results in high initial material costs but also significant costs during subsequent welding and fixing; 2. The steel components are very heavy, causing a heavy base and frame, increasing costs during vehicle use; 3. When installing and fixing the base to the main beam of the electric heavy truck, and when fixing the base to the frame, not only are conventional fasteners such as bolts required, but also connecting components such as angle brackets are needed, which not only increases fixing costs but also affects the efficiency of component installation and fixing. Therefore, it is necessary to improve the bracket structure in the existing technology to reduce the weight of the bracket, save costs, and improve installation and fixing efficiency. Utility Model Content

[0004] The present invention aims to provide a vehicle bracket and a new energy heavy-duty truck to solve the problems of large weight, high cost and low installation and fixing efficiency of the brackets used for installing battery packs of electric heavy-duty trucks in the prior art.

[0005] The inventors discovered that the fundamental reason for the large weight, high cost, and low installation and fixing efficiency of existing electric heavy truck brackets is the need for secondary processing and welding to fix heavy steel components. Therefore, the inventors attempted to solve the problem at its root by directly using aluminum alloy, which has a lower density, as the bracket material. Aluminum alloy can be integrally extruded into the main structure of the frame or base, and the main structure of the base and frame can be obtained with a small amount of subsequent machining. Moreover, aluminum alloy has excellent welding performance and can be quickly and stably fixed between various components by friction stir welding. Therefore, aluminum alloy is an ideal material for brackets. However, during the actual processing and fixing process, the inventors found that using conventional processing methods had two drawbacks. First, the overall size of the base and frame was too large, making it impossible to use integrated processing in a low-cost and convenient manner, especially for the frame structure. Second, due to the large weight of the battery pack, after the battery pack was installed and fixed on the bracket, the bracket was not only subjected to the vertical gravity of the battery pack, but also to the component force of the battery pack along the direction parallel to the vehicle body when the electric heavy truck turned or went up and down slopes. This placed high demands on the vertical and lateral load-bearing capacity of the bracket. The conventional connection method between the base and the frame could not stably withstand the force of the battery pack, especially the lateral component force. Therefore, the inventors further improved the bracket structure to ensure the stability of the internal structure of the entire bracket and to stably install and support the battery pack.

[0006] To solve the above problems, the present invention adopts the following technical solution: a vehicle bracket, including a base and a frame, the frame including multiple horizontally arranged side by side and fixedly connected in pairs, and a horizontal reinforcing part fixedly connected between adjacent frame bodies; the base is fixedly connected to the frame bodies, and a vertical reinforcing part is fixedly connected between the base and the frame bodies.

[0007] The principles and beneficial effects of this application are as follows: In this application, both the frame and the base are made of aluminum alloy. The frame includes multiple horizontally arranged frame bodies that are fixedly connected to each other. The large frame is decomposed into multiple smaller frame bodies, reducing the difficulty of integral extrusion molding. Adjacent frame bodies can be quickly and stably welded and fixed by friction stir welding. After the frame is installed and fixed, the base can be installed and fixed to the bottom of the frame. The frame and base are easy to form and efficient to fix, which can not only effectively reduce the weight of the bracket, but also save costs and improve the installation and fixing efficiency.

[0008] In addition, this application includes a lateral reinforcement section fixedly connected between adjacent frame bodies to prevent lateral detachment of the frame bodies. This creates a secondary fixation relationship between the already horizontally fixed frame bodies through the lateral reinforcement section, improving the stability of the connection between the frame bodies, and in particular, greatly enhancing the lateral load-bearing capacity of the frame bodies. At the same time, this application also includes a fixed connection between the base and the frame body, and a vertical reinforcement section fixedly connected between the base and the frame body to prevent vertical detachment of the frame body from the base. This creates a secondary fixation relationship between the base and the frame in the vertical direction, effectively improving the stability of the connection between the base and the frame, and significantly enhancing the load-bearing capacity (especially tensile strength) in the vertical direction.

[0009] In summary, this application utilizes horizontal and vertical reinforcement components between the base and the frame. After the frame and base are fixedly connected, it not only has stable vertical load-bearing capacity but also greatly improves horizontal load-bearing capacity and vertical tensile strength. The aluminum alloy structure of both the base and the frame effectively ensures internal structural stability and provides stable support and fixation for the battery pack. This provides an effective guarantee for the bracket to be made of aluminum alloy and to have stable structural performance, effectively reducing the weight of the bracket, saving costs, and improving the installation and fixing efficiency of the bracket.

[0010] Preferably, as an improvement, it also includes a lateral fastener that is simultaneously fixedly connected to all the frame bodies. The frame body is provided with a socket, the lateral fastener is provided with a plug-in part that is equal in number to and corresponds one-to-one with the sockets of all the frame bodies, and the frame body is provided with a plug-in fixing part that is fixed to the plug-in part.

[0011] In this design, a horizontal fastener is fixedly connected to the outside of the frame body. This horizontal fastener connects all the frame bodies that are already horizontally fixed together, providing a third layer of fixation for adjacent frame bodies, making the connection between them more stable and able to withstand the lateral force of the battery pack more stably. In addition, this design provides a plug-in part on the horizontal fastener for insertion and fixation, further improving the fixing effect between the horizontal fastener and the frame body. At the same time, when the plug-in part is inserted into the socket, the frame body also has a plug-in fixing part for fixing the plug-in part. This plug-in fixing part keeps the plug-in part in a fixed state with the socket, preventing the plug-in part from loosening out of the socket, and further improving the stability of the connection between the horizontal fastener and the frame body.

[0012] Preferably, as an improvement, the socket portion includes several parallel socket slots, which are arranged through the front and rear sides of the frame body and close to the top of the frame body. Socket support plates are fixedly connected between adjacent socket slots. The transverse fixing member includes a transverse fixing plate, and the insertion portion includes an insertion seat fixedly connected to the transverse fixing plate. The insertion seat has a vertical threaded hole, and the vertical fixing portion includes a welding hole coaxially arranged with the vertical threaded hole. The diameter of the welding hole is larger than that of the vertical threaded hole.

[0013] In this design, the socket portion includes multiple sockets extending through the frame body along its front and rear sides. These sockets allow for the fixing of a transverse fixing plate to the front and / or rear sides of the frame body, and the insertion seats on the transverse fixing plate can be inserted into the sockets. This facilitates the installation and fixing of the transverse fixing plate and ensures the insertion of the insertion seats into the sockets. Furthermore, the sockets extending through the frame body not only facilitate mating with the insertion seats but also effectively reduce the weight and material usage of the frame body, saving costs. Moreover, the sockets in this design are located near the top of the frame body, making... The top of the frame body forms a "cavity" structure along the front and rear direction of the frame body. These "cavities" provide a certain amount of clearance when the frame body is deformed by external impact, giving the top of the frame body good impact resistance. In the prior art, the battery pack is installed on the top of the frame body. Therefore, the frame body structure in this solution can better protect the battery pack from impact. The socket support plates set between adjacent sockets reinforce the top structure of the frame body and avoid insufficient strength after the sockets are set.

[0014] In addition, this solution has a vertical threaded hole on the socket, and the vertical fixing part includes a welding hole coaxially arranged with the vertical threaded hole. When multiple frame bodies are installed and fixed horizontally side by side to form a frame, the battery pack can be installed and fixed through the vertical threaded hole. The setting of the welding hole not only allows the bolts used to fix the battery pack to pass through vertically smoothly and be fixed to the threaded hole, but also the diameter of the welding hole is larger than the diameter of the vertical threaded hole. The connection interface between the welding hole and the threaded hole can be used to easily weld and fix the plug to the top of the frame body.

[0015] Preferably, as an improvement, the number of the transverse reinforcement parts is multiple and the multiple transverse reinforcement parts are arranged vertically. The transverse reinforcement part includes a transverse fixing seat with an H-shaped cross section, and a transverse T-shaped groove that engages with the transverse fixing seat is provided on the side of the adjacent frame body facing each other.

[0016] In this solution, each frame body is provided with multiple horizontal reinforcement parts to enhance the strengthening and fixing effect of adjacent frame bodies. In addition, the horizontal fixing seat in this solution is H-shaped, and a half-H-shaped horizontal T-slot is provided for each frame body. The horizontal fixing seat can be used to firmly connect adjacent frame bodies and effectively prevent the adjacent frame bodies from loosening laterally.

[0017] Preferably, as an improvement, the vertical reinforcement includes a vertical fixing seat with an I-shaped cross-section, the bottom surface of the frame body is provided with an upper T-shaped groove that engages with the upper half of the vertical fixing seat, and the top surface of the base is provided with a lower T-shaped groove that engages with the bottom surface of the vertical fixing seat.

[0018] In this solution, the vertical fixing seat is I-shaped, and its structure and fixing effect are similar to those of the horizontal fixing seat. The horizontal fixing seat can be directly rotated 90° to obtain the vertical fixing seat, which makes it convenient to use the same mold structure to extrude and form both the horizontal and vertical fixing seats, further reducing processing costs.

[0019] Preferably, as an improvement, the base includes a left base portion and a right base portion arranged horizontally. The bottom of the left base portion is connected to a left snap-fit ​​portion, and the bottom of the right base portion is connected to a right snap-fit ​​portion. A snap-fit ​​gap is provided between the left snap-fit ​​portion and the right snap-fit ​​portion. Locking portions that cooperate with the snap-fit ​​gap are provided on the left snap-fit ​​portion and the right snap-fit ​​portion. The bottom of the frame is provided with a left snap-fit ​​groove and a right snap-fit ​​groove. The top end of the left base portion is snap-fitted and fixed in the left snap-fit ​​groove, and the top end of the right base portion is snap-fitted and fixed in the right snap-fit ​​groove.

[0020] In this design, the base is divided into a smaller left base section and a smaller right base section, reducing the difficulty of base processing and forming. Furthermore, the left and right base sections can be processed separately and installed onto the frame sequentially, further reducing installation difficulty. Additionally, this design includes left and right snap-fit ​​sections. When the base is installed onto the main beam of an existing electric heavy-duty truck, the main beam snaps into the snap-fit ​​gap, and then the locking mechanism secures the left and right snap-fit ​​sections to the main beam, resulting in a stable structure and convenient installation. Simultaneously, this design includes left and right snap-fit ​​grooves at the bottom of the frame. When the base is installed at the bottom of the frame, the tops of the left and right base sections are fixed to the bottom of the frame. The top of the left base section engages with the left snap-fit ​​groove, and the right base section engages with the right snap-fit ​​groove, further enhancing the stability of the connection between the base and the frame.

[0021] Preferably, as an improvement, the frame body is provided with a transverse through groove that runs horizontally through the frame body along the arrangement direction of the frame body, and all the transverse through grooves of the frame body form a transverse installation space; the base is fixedly connected to the frame body with a number of vertical bushings, and the top of the vertical bushings is flush with the bottom wall of the transverse installation space.

[0022] In this design, a transverse through-slot is provided on the frame body. After multiple frame bodies are fixed in sequence, all the transverse through-slots form a transversely connected installation space. This allows control systems and other components used with the battery pack in the prior art to be installed within the transverse installation space. The frame body can protect the components installed within the transverse installation space. In addition, a vertically arranged bushing is fixed between the base and the frame body. The top of the vertical bushing is flush with the bottom wall of the transverse installation space. This allows for convenient installation and fixation of control systems and other components used with the battery pack within the transverse installation space. Furthermore, the vertical bushing connects to both the base and the frame body, further enhancing the stability of the connection between the frame body and the base.

[0023] Preferably, as an improvement, the frame body is provided with a bottom through groove near the bottom, which is parallel to the support slot. Each frame body has multiple bottom through grooves, and a bottom support plate is fixedly connected between adjacent bottom through grooves. The upper T-shaped slot is provided on the bottom support plate.

[0024] In this design, a bottom through-slot parallel to the support slot is provided near the bottom of the frame body. This makes the bottom of the frame body similar to the support slot near the top, providing good resistance to impact deformation and better protection for components installed in the horizontal installation space. In addition, bottom support plates are fixedly connected between adjacent bottom through-slots to ensure that the bottom of the frame body has sufficient strength to be stably fixed to the base. More importantly, an upper T-shaped slot is provided on the bottom support plate. With the bottom support plate, the bottom of the frame body has sufficient thickness to accommodate the upper T-shaped slot, so that the vertical reinforcement can pass through the upper T-shaped slot to form a more stable vertical fixation effect between the base and the frame body.

[0025] Preferably, as an improvement, the base is provided with a base weight reduction groove, and the frame body is provided with a frame weight reduction groove.

[0026] In this solution, by setting weight-reducing grooves in the base and frame, we can further save materials and reduce the overall weight of the bracket.

[0027] A new energy heavy-duty truck includes the aforementioned vehicle bracket.

[0028] In this solution, a vehicle bracket is installed on a new energy heavy-duty truck. Because a stable connection can be formed between the base and the frame, it provides stable support for the battery pack of the new energy heavy-duty truck. The entire bracket can be made of aluminum alloy extrusion molding. The frame body inside the frame and the frame and the base can be quickly and stably fixed by friction stir welding, which effectively reduces the weight of the bracket, saves costs and improves the installation efficiency of the bracket. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a vehicle bracket according to Embodiment 1 of this utility model.

[0030] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0031] Figure 3 This is a schematic diagram of the frame body in Embodiment 1 of this utility model.

[0032] Figure 4 This is a schematic diagram of the vertical support plate in Embodiment 1 of this utility model.

[0033] Figure 5 This is a schematic diagram of the horizontal fixing seat in Embodiment 1 of this utility model.

[0034] Figure 6 This is a schematic diagram of the connection between the horizontal fixing plate and the plug-in socket in Embodiment 1 of this utility model.

[0035] Figure 7 This is a partial schematic diagram of the insertion weight reduction groove and insertion support plate reinforcement provided on the insertion seat in Embodiment 1 of this utility model.

[0036] Figure 8 This is a schematic diagram of the base in Embodiment 1 of this utility model.

[0037] Figure 9 for Figure 8 A schematic diagram showing the connection between the left and right base bodies near the center.

[0038] Figure 10 A schematic diagram of connecting a vertical bushing within the horizontal installation space in Embodiment 2 of this utility model.

[0039] Figure 11 A schematic diagram of the connection of the vertical bushing within the horizontal installation space in Embodiment 2 of this utility model, viewed from below.

[0040] Figure 12 This is a schematic diagram of the vertical bushing in Embodiment 2 of this utility model.

[0041] Figure 13 This is a schematic diagram of the base in Embodiment 3 of this utility model.

[0042] Figure 14 This is a schematic diagram of the vertical support plate in Embodiment 4 of this utility model.

[0043] Figure 15 This is a schematic diagram of the transverse fixing seat in Embodiment 4 of this utility model.

[0044] Figure 16 This is a schematic diagram of the vertical fixing seat in Embodiment 4 of this utility model. Detailed Implementation

[0045] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: frame body 1, transverse through groove 101, front and rear connecting groove 102, transverse T-slot 103, socket 104, socket support plate rib 105, mounting groove 106, welding hole 107, upper T-slot 108, bottom through groove 109, bottom support plate rib 1010, frame weight reduction groove 1011, transverse fixing seat 2, transverse weight reduction deformation groove 201, transverse fixing plate 3, plug-in seat 4, plug-in weight reduction groove 401, plug-in support plate rib 402, vertical threaded hole 403, left base body 5, left through groove 501, left support plate 502, Lower T-shaped slot; 503, Base weight reduction slot; 504, Right base body; 6, Right through slot; 601, Right support plate; 602, Left snap-fit ​​seat; 7, Left snap-fit ​​weight reduction slot; 701, Locking hole; 702, Slot; 703, Right snap-fit ​​seat; 8, Right snap-fit ​​weight reduction slot; 801, Limiting plate; 9, Vertical fixing seat; 10, Vertical weight reduction deformation slot; 1001, Vertical support plate; 11, Vertical through slot; 1101, Vertical support plate rib; 1102, Vertical bushing; 12, Mounting threaded hole; 1201, Left sealing plate; 13, Right sealing plate; 14, Snap-fit ​​gap; 1000, Horizontal installation space; 2000.

[0046] Example 1 This embodiment is as shown in the attached figure. Figure 1 As shown: A vehicle bracket includes a frame and a base fixedly connected to the bottom of the frame. To reduce the difficulty of frame processing, the frame in this embodiment includes multiple frame bodies 1 arranged horizontally side by side and fixedly connected to each other. The frame bodies 1 are made of aluminum alloy material and are integrally formed by extrusion. Adjacent frame bodies 1 are fixed to each other by friction stir welding. Figure 1 The diagram shows ten frame bodies 1 fixed side by side. All frame bodies 1 are fixed laterally to form a top support plane, on which the battery pack in the prior art can be fixedly installed. Therefore, in actual application, the lateral arrangement of all frame bodies 1 is along the Y direction of the vehicle so that all frame bodies 1 are fixed to each other before being installed and fixed on the vehicle.

[0047] Combination Figure 1 and Figure 3In this embodiment, the frame body 1 has transverse through-slots 101 machined along the arrangement direction of all frame bodies 1, penetrating the left and right side walls. The front and rear sides of the frame body 1 are provided with front and rear connecting slots 102 communicating with the transverse through-slots 101. After all frame bodies 1 are horizontally welded and fixed side-by-side, the transverse through-slots 101 of all frame bodies 1 form a transversely connected horizontal installation space 2000, which can be used to install and fix existing structures such as controllers and cooling systems that cooperate with the battery pack within the horizontal installation space 2000. During the manufacturing process, to facilitate processing, the front and rear connecting slots 102 are simultaneously extruded during the extrusion molding of the main structure of the frame body 1, and then the transverse through-slots 101 are machined.

[0048] To further enhance the connection strength after the adjacent frame bodies 1 are horizontally welded and fixed, in this embodiment, a horizontal reinforcing part is fixedly connected between the adjacent frame bodies 1, and the number of horizontal reinforcing parts is multiple, and the multiple horizontal reinforcing parts are arranged along the vertical direction of the frame bodies 1. Figure 1 The image shows a case where two transverse reinforcements are provided on the side of the frame body 1. Specifically, in conjunction with... Figure 2 , Figure 3 and Figure 5 The transverse reinforcement includes a transverse fixing seat 2 with an H-shaped cross-section. A transverse T-slot 103 is provided on the side of the adjacent frame body 1 facing each other, engaging with the transverse fixing seat 2. The transverse T-slot 103 can be directly extruded using an integral extrusion molding process. When adjacent frame bodies 1 are fixed laterally side-by-side, the left half of the transverse fixing seat 2 engages with the transverse T-slot 103 on the side of the left frame body 1, and the right half engages with the transverse T-slot 103 on the side of the right frame body 1. The fixing method for the fixing seat 2 and the transverse T-slot 103 can be as follows: the transverse fixing seat 2 can be set to have an interference fit with the transverse T-slot 103. When fixing, first apply adhesive to the transverse T-slot 103, and then tap the transverse fixing seat 2 into the transverse T-slot 103. Fixing is achieved by using adhesive and the interference fit between the two. Of course, the transverse fixing seat 2 can also be directly inserted into the transverse T-slot 103, and then welded to fix the transverse fixing seat 2 to the frame body 1. This will not be elaborated here.

[0049] In addition, to further improve the connection stability of adjacent frame bodies 1 after welding and connection with transverse fixing seats 2, this embodiment also includes transverse fixing members that are simultaneously fixedly connected to all frame bodies 1. Each frame body 1 is provided with a socket, and the transverse fixing member is provided with a number of insertion parts that are equal to and correspond one-to-one with the socket parts of all frame bodies 1. Furthermore, the frame body 1 is provided with insertion fixing parts that are fixed to the insertion parts. Specifically, as shown in... Figure 3As shown, the socket portion includes multiple parallel socket slots 104. The socket slots 104 are integrally extruded along the front and rear sides of the frame body 1 and are located near the top of the frame body 1. Adjacent socket slots 104 are fixedly connected by socket support ribs 105 through integral extrusion molding. Figure 1 and Figure 6 The horizontal fixing component includes a horizontally arranged horizontal fixing plate 3. Horizontal fixing plates 3 are provided on both the front and rear sides of the frame body 1. In other embodiments besides this one, the horizontal fixing part may only be provided on the front or rear side of the frame body 1, so that all frame bodies 1 can be connected simultaneously without affecting the connection between adjacent frame bodies 1 or the connection of the battery pack to the top of the frame. Furthermore, the length of the horizontal fixing plate 3 is equal to the length of all frame bodies 1 after they are fixedly connected side-by-side. To improve the overall structural integrity and aesthetics, in this embodiment, mounting grooves 106 that cooperate with the horizontal fixing plates 3 are provided on the top front and rear sides of the frame body 1. After the horizontal fixing plates 3 are fixed to the front and rear sides of the frame body 1 by friction stir welding, the top of the horizontal fixing plates 3 is flush with the top of the frame body 1, and the outer side of the horizontal fixing plates 3 is flush with the front or rear side of the frame body 1.

[0050] Combination Figure 6 and Figure 7 In this embodiment, the insertion part includes an insertion seat 4 fixedly connected to the side of the transverse fixing plate 3 by integral extrusion molding. The insertion seat 4 is inserted into the socket 104, so that the transverse fixing plate 3 is more stably connected to the frame body 1 through the insertion of the insertion seat 4 and the socket 104, thereby improving the stability of all frame bodies 1 after being fixedly connected to each other. In addition, in order to ensure the stability of the connection after the insertion seat 4 is inserted into the socket 104, the insertion depth of the insertion seat 4 into the socket 104 is greater than or equal to 80mm, preferably 85 or 90mm. In order to reduce the weight of the insertion seat 4 and ensure the structural strength of the insertion seat 4, in this embodiment, an insertion weight reduction groove 401 along the length direction of the transverse fixing plate 3 is provided on the insertion seat 4 by integral extrusion molding or other means. A vertically arranged insertion support plate rib 402 is fixedly connected in the insertion weight reduction groove 401 by integral extrusion molding or other means. The insertion support plate rib 402 is arranged along the length direction of the transverse fixing plate 3. Meanwhile, the connector 4 has a vertical threaded hole 403, which is used to vertically insert into or penetrate the support plate rib 402. Figure 3The vertical fixing part includes a welding hole 107 located at the top of the frame body 1 and coaxially arranged with the vertical threaded hole 403. The diameter of the welding hole 107 is larger than that of the vertical threaded hole 403. When the plug-in seat 4 is inserted into the socket 104, the vertical threaded hole 403 and the welding hole 107 are vertically aligned. At this time, welding can be performed along the contact interface between the welding hole 107 and the vertical threaded hole 403 to fix the plug-in seat 4 to the frame body 1.

[0051] Combination Figure 1 and Figure 8 In this embodiment, the base includes a left base portion and a right base portion arranged horizontally from left to right. A left locking portion is connected to the bottom of the left base portion, and a right locking portion is connected to the bottom of the right base portion. A locking gap 1000 is provided between the left and right locking portions. Locking portions that mate with the locking gap 1000 are provided on both the left and right locking portions. In this embodiment, the left and right base portions are symmetrically arranged, and their materials and fixing methods are completely identical. The following description focuses on the left base portion as an example.

[0052] Combination Figure 8 and Figure 9 The left base portion includes multiple horizontally arranged and fixedly connected left base bodies 5. Each left base body 5 is made of aluminum alloy through an integral extrusion molding process, and adjacent left base bodies 5 are fixed together by friction stir welding. To reduce the weight of the left base portion and save materials, in this embodiment, multiple left through slots 501 are integrally formed within the left base body 5 through an extrusion molding process. The left through slots 501 are arranged along the front-rear direction of the left base body 5 (i.e., parallel to the support slot 104), and the multiple left through slots 501 are spaced apart in the horizontal direction. A vertically arranged left support plate 502 is integrally extruded between adjacent left through slots 501. Correspondingly, the right base portion includes multiple horizontally arranged and fixedly connected right base bodies 6. Adjacent right base bodies 6 are also fixed together by friction stir welding. Multiple right through slots 601 are integrally formed within the right base body 6 through an extrusion molding process, and the multiple right through slots 601 are spaced apart in the horizontal direction. A vertically arranged right support plate 602 is also integrally extruded between adjacent right through slots 601. Of course, in other embodiments besides this one, the number of base bodies in the corresponding base section can be set to different sizes and quantities according to the vehicle model requirements, which will not be elaborated here.

[0053] In this embodiment, the left base portion includes two aforementioned left base bodies 5, and the right base portion includes two aforementioned right base bodies 6. The left snap-fit ​​portion includes a left snap-fit ​​seat 7 integrally extruded into the two left base bodies 5 near the bottom of the right left base body 5. The right snap-fit ​​portion includes a right snap-fit ​​seat 8 integrally extruded into the two right base bodies 6 near the bottom of the left right base body 6. To reduce structural weight, a left snap-fit ​​weight-reducing groove 701 along the length of the left snap-fit ​​seat 7 is integrally extruded onto the left snap-fit ​​seat 7, and a right snap-fit ​​weight-reducing groove 801 along the length of the right snap-fit ​​seat 8 is integrally extruded onto the right snap-fit ​​seat 8. Simultaneously, combined with… Figure 10 In this embodiment, the vertical thickness of the left base gradually decreases along the direction away from the right base, and the vertical thickness of the right base gradually decreases along the direction away from the left base. That is, the thickness of the two left base bodies 5 in the vertical direction gradually decreases from right to left, and the thickness of the two right base bodies 6 in the vertical direction gradually decreases from left to right. This is done in a way that matches the torque experienced by the entire base in the vertical direction, and minimizes material loss in the left and right bases, thereby saving costs.

[0054] In addition, such as Figure 9 As shown, the locking part in this embodiment includes locking holes 702 directly opposite each other on the left and right latching seats 7 and 8. The locking holes 702 penetrate both the left and right latching seats 7 and 8. There are multiple locking holes 702 arranged in a direction perpendicular to the left and right base portions (i.e., the locking holes 702 are evenly spaced along the length of the left and right latching seats 7 and 8). Simultaneously, to facilitate installation and connection with the main beam of existing electric heavy-duty trucks, this embodiment machines two horizontally opposite latching slots 703 on the left and right latching seats 7 and 8. A connecting beam that mates with the latching slots 703 is provided on the main beam, preventing the base from moving along the vehicle's travel direction after installation and fixation, thus improving the stability of the base connection.

[0055] Combination Figure 1 , Figure 3 and Figure 8 The base and frame are fixedly connected. Specifically, the top of the left base and the top of the right base are fixed to the bottom of the frame by welding. To improve the stability after the base and frame are welded together, this embodiment has a left snap-fit ​​groove and a right snap-fit ​​groove at the bottom of the frame. The top of the left base is snapped and fixed in the left snap-fit ​​groove, and the top of the right base is snapped and fixed in the right snap-fit ​​groove. Figure 1 and Figure 2The bottom of the four frame bodies 1 is fixedly connected to the limiting plates 9 by integral extrusion molding. The limiting plates 9 are set along the front and rear length direction of the frame bodies 1. The two limiting plates 9 on the left side form the left locking groove, and the two limiting plates 9 on the right side form the right locking groove. The top of the left base part is inserted into the left locking groove, and the top of the right base part is inserted into the right locking groove. The left base part and the right base part are fixed to the corresponding limiting plates 9 by friction stir welding.

[0056] In addition, to further improve the stability of the connection between the frame and the base, especially the vertical stability, this embodiment includes a vertical reinforcement between the base and the frame to prevent the frame body 1 from vertically separating from the base. Specifically, in conjunction with... Figure 1 , Figure 2 and Figure 3 The vertical reinforcement includes an I-shaped vertical fixing seat 10. The bottom surface of the frame body 1 is provided with an upper T-shaped groove 703 that engages with the upper half of the vertical fixing seat 10, and the top surface of the base is provided with a lower T-shaped groove 703 that engages with the bottom surface of the vertical fixing seat 10. The vertical fixing seat 10 can be the state after the horizontal fixing seat 2 has been rotated 90° clockwise. Therefore, when the horizontal fixing seat 2 and the vertical fixing seat 10 are actually integrally extruded, an H-shaped (or I-shaped) connecting seat can be extruded first, and then cut to a suitable length to form the horizontal fixing seat 2 or the vertical fixing seat 10. The fixing method of the vertical fixing seat 10 with the upper T-shaped groove 703 and the lower T-shaped groove 703 is the same as the fixing method of the horizontal fixing seat 2 with the horizontal T-shaped groove 103, and will not be described again here.

[0057] Combination Figure 2 and Figure 3 In this embodiment, a bottom through groove 109 is provided near the bottom of the frame body 1, parallel to the receiving slot 104. Each frame body 1 has multiple bottom through grooves 109, and bottom support ribs 1010 are fixedly connected between adjacent bottom through grooves 109. An upper T-shaped slot 703 is provided on the bottom support rib 1010; simultaneously, combined with... Figure 1 and Figure 4 In this embodiment, a vertical support plate 11 is fixedly connected in the front and rear connecting grooves 102 by welding. The vertical support plate 11 can withstand external impacts along the front and rear direction of the frame body 1, preventing the components installed in the through installation space from being damaged by external impacts. In addition, the top and bottom of the frame body 1 are respectively provided with a receiving slot 104 and a bottom through groove 109, so that the top and bottom of the frame body 1 also have good impact deformation resistance. When subjected to external impacts, the top and bottom of the frame body 1 can undergo a certain deformation to better protect the components installed in the horizontal installation space 2000.

[0058] In this embodiment, the frame is fixed by horizontal welding of multiple frame bodies 1. The processing and installation of a single frame body 1 is less difficult, and the frame body 1 is also made of aluminum alloy in one piece, which significantly reduces the weight of the entire frame. Since the adjacent frame bodies 1 are fixedly connected by friction stir welding, a first layer of fixed connection relationship is formed. Then, a horizontal fixing seat 2 is fixedly connected between the adjacent frame bodies 1. The horizontal fixing seat 2 can assist the connection strength between the adjacent frame bodies 1, especially in the vertical direction, it can reduce the vertical misalignment or horizontal loosening of the adjacent frame bodies 1 under force, so that a second layer of fixed connection relationship is formed between the adjacent frame bodies 1, making the frame connection structure very stable.

[0059] In addition, the left and right snap-fit ​​slots at the bottom of the frame are respectively snap-fitted and welded to the left and right base parts, enabling the left and right base parts to be stably connected to the frame. Moreover, in this embodiment, a vertical fixing seat 10 is fixed between each frame body 1 and the left base body 5 or the right base body 6, effectively improving the stability of the connection between the frame and the bracket base, especially in the vertical direction, which greatly improves the stability of the connection between the bracket base and the frame, enabling the frame to provide stable support and fixation for the battery pack in the prior art. The components in the left and right base parts of the bracket base are also made of aluminum alloy through integral extrusion molding, which is convenient to process. The adjacent left base bodies 5 and adjacent right base bodies 6 are fixed by friction stir welding, which is convenient and low in cost. At the same time, in order to further reduce the weight of the entire vehicle bracket, vertically penetrating base weight reduction grooves 504 are provided on the left base body 5 and the right base body 6, and vertically penetrating frame weight reduction grooves 1011 are provided on the frame body 1.

[0060] A new energy heavy-duty truck includes the aforementioned vehicle bracket.

[0061] Example 2 The difference between Example 2 and Example 1 is as follows: Figure 10 and Figure 11 As shown, to further improve the stability of the connection between the base and the frame and to facilitate the installation and fixing of other components used in conjunction with the battery pack within the horizontal installation space 2000, in this embodiment, several vertical bushings 12 are fixedly connected between the base and the frame. The top of the vertical bushings 12 is flush with the bottom wall of the horizontal installation space 2000. Figure 12 The vertical bushing 12 has a vertically coaxial mounting threaded hole 1201, which can be used to conveniently install and fix components within the horizontal mounting space 2000. In addition, the vertical bushing 12 is connected to the bottom of the base and the frame body 1, further improving the stability of the connection between the base and the frame.

[0062] Example 3 The difference between Example 3 and Example 2 is as follows: Figure 13 As shown, in this embodiment, a vertical through-groove 1101 is formed within the vertical support plate 11 by extrusion molding. Several vertical support plate ribs 1102 are integrally extruded within the vertical through-groove 1101, and all vertical support plate ribs 1102 are arranged laterally along the left-right direction. By providing the vertical through-groove 1101 within the vertical support plate 11, not only can the weight of the vertical support plate 11 be effectively reduced, but the vertical through-groove 1101 also enables the vertical support plate 11 to withstand greater lateral impact, providing better protection for components installed within the through-mounting space. Figure 14 and Figure 15 As shown, similar to the vertical through groove 1101 provided on the vertical support plate 11, this embodiment provides a horizontal weight reduction deformation groove 201 on the horizontal fixing seat 2 and a vertical weight reduction deformation groove 1001 on the vertical fixing seat 10. This can also reduce the weight of the components and make them less prone to damage after being impacted, thereby improving the stability of the entire structural connection.

[0063] Example 4 The difference between Example 4 and Example 3 is as follows: Figure 16 As shown, in this embodiment, a left sealing plate 13 is fixedly connected to the outer side of the left base body 5 to seal both ends of the left through groove 501, and a right sealing plate 14 is fixedly connected to the outer side of the right base body 6 to seal the right through groove 601. Specifically, there are two left sealing plates 13 and two right sealing plates 14. The two left sealing plates 13 are located on the front and rear sides of the left base, and the left sealing plates 13 are simultaneously welded and fixed to the front or rear sides of the two left base bodies 5, so that the left sealing plates 13 can block and seal the ends of all left through grooves 501 on the two left base bodies 5. Similarly, the two right sealing plates 14 are located on the front and rear sides of the right base, and the right sealing plates 14 can simultaneously block and seal the ends of all right through grooves 601 on the front or rear sides of the two right base bodies 6. In this embodiment, by setting the left sealing plates 13 and right sealing plates 14, not only is the overall appearance of the bracket base more aesthetically pleasing, but it also prevents water or dust and other impurities from entering the left through groove 501 or the right through groove 601.

[0064] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A vehicle bracket, characterized in that: The device includes a base and a frame. The frame includes multiple horizontally arranged frame bodies that are fixedly connected to each other in pairs, and horizontal reinforcing parts are fixedly connected between adjacent frame bodies. The base is fixedly connected to the frame bodies, and vertical reinforcing parts are fixedly connected between the base and the frame bodies.

2. The vehicle bracket according to claim 1, characterized in that: It also includes a horizontal fastener that is fixedly connected to all the frame bodies at the same time. The frame body is provided with a socket, and the horizontal fastener is provided with a plug-in part that is equal in number to and corresponds one-to-one with the sockets of all the frame bodies. The frame body is provided with a plug-in fixing part that is fixed to the plug-in part.

3. A vehicle bracket according to claim 2, characterized in that: The socket portion includes several parallel socket slots, which are arranged through the front and rear sides of the frame body and close to the top of the frame body. Socket support plates are fixedly connected between adjacent socket slots. The transverse fixing member includes a transverse fixing plate. The insertion portion includes an insertion seat fixedly connected to the transverse fixing plate. The insertion seat has a vertical threaded hole. The vertical fixing portion includes a welding hole coaxially arranged with the vertical threaded hole. The diameter of the welding hole is larger than that of the vertical threaded hole.

4. A vehicle bracket according to claim 2, characterized in that: The number of the transverse reinforcement parts is multiple and the multiple transverse reinforcement parts are arranged vertically. The transverse reinforcement part includes a transverse fixing seat with an H-shaped cross section. The side of the adjacent frame body facing each other is provided with a transverse T-shaped groove that engages with the transverse fixing seat.

5. A vehicle bracket according to claim 1, characterized in that: The vertical reinforcement includes an I-shaped vertical fixing seat, the bottom surface of the frame body is provided with an upper T-shaped slot that engages with the upper half of the vertical fixing seat, and the top surface of the base is provided with a lower T-shaped slot that engages with the bottom surface of the vertical fixing seat.

6. A vehicle bracket according to claim 2, characterized in that: The base includes a left base portion and a right base portion arranged horizontally. The bottom of the left base portion is connected to a left snap-fit ​​portion, and the bottom of the right base portion is connected to a right snap-fit ​​portion. A snap-fit ​​gap is provided between the left and right snap-fit ​​portions, and locking portions that cooperate with the snap-fit ​​gap are provided on the left and right snap-fit ​​portions. The bottom of the frame is provided with a left snap-fit ​​groove and a right snap-fit ​​groove. The top of the left base portion is snap-fitted and fixed in the left snap-fit ​​groove, and the top of the right base portion is snap-fitted and fixed in the right snap-fit ​​groove.

7. A vehicle bracket according to claim 2, characterized in that: The frame body has a transverse through groove that runs horizontally through the frame body along the arrangement direction of the frame body, and all the transverse through grooves of the frame body form a transverse installation space; the base is fixedly connected to the frame body with several vertical bushings, and the top of the vertical bushings is flush with the bottom wall of the transverse installation space.

8. A vehicle bracket according to claim 7, characterized in that: The frame body has a bottom through slot near the bottom, which is parallel to the support slot. There are multiple bottom through slots on each frame body. Bottom support ribs are fixedly connected between adjacent bottom through slots. The upper T-shaped slot is set on the bottom support rib.

9. A vehicle bracket according to claim 8, characterized in that: The base is provided with a base weight reduction groove, and the frame body is provided with a frame weight reduction groove.

10. A new energy heavy-duty truck, characterized in that: Including a vehicle bracket as described in any one of claims 1-9.

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