Frames, electric track bikes and laser processing equipment

Abstract

The present invention relates to the technical field of electric vehicles and laser processing equipment, and proposes a vehicle frame, an electric field vehicle and laser processing equipment. The vehicle frame includes a chassis and a battery pack mounting frame. The battery pack mounting frame can be adjusted by simple operation according to the shape and size of the battery pack, and is suitable for battery packs of various specifications, and has high versatility. The chassis adopts the existing chassis, and the laser processing equipment is used to process the chassis. The first mounting groove and the second mounting groove are processed on the continuous curved surface at both ends of the bottom plate of the chassis to install the slide rail, so as to realize the sliding of the battery pack mounting frame, and facilitate assembly and maintenance of the battery pack. The laser processing equipment includes two gantries, an X-axis moving module, a Y-axis moving module, a Z-axis moving module and a controller. The Z-axis moving module is connected to a rotating component, a laser cutting component and a path detection component. The laser cutting component, the path detection component, the X-axis moving module, the Y-axis moving module and the Z-axis moving module are all electrically connected to the controller.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles and laser processing equipment, and in particular to a vehicle frame, an electric track vehicle and laser processing equipment. Background Art

[0002] With the advancement of technology, electric vehicles have been widely promoted, and batteries are an indispensable part of electric vehicles. Not only cars on the road, but also various field vehicles are widely driven by electricity, such as golf course vehicles, scenic sightseeing vehicles, farm transport vehicles, etc.

[0003] In the related technology, in order to adapt to the battery pack and the electric assembly, the frame of the track vehicle needs to be adaptively modified. However, the current battery pack technology is developing rapidly, and the product design concepts adopted by various battery manufacturers vary greatly, resulting in a variety of battery pack shapes and volumes. There is great difficulty in the frame design of the track vehicle. Therefore, it is necessary to develop a battery pack mounting frame that can adapt to a variety of battery packs. At the same time, in order to use the existing frame, the battery pack mounting frame is designed to be slidably connected to the chassis of the frame to facilitate the installation and maintenance of the battery pack. However, the middle part of the existing chassis is a sunken structure, and the two ends are smooth transition continuous curved surfaces to match the tires and suspension structures. It is extremely difficult to process mounting holes and grooves on the continuous curved surface, which makes the modification of the frame difficult and the production efficiency low. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a frame having a quick-install structure that can easily adjust the space and can be adapted to battery packs of various specifications.

[0005] The present invention also proposes an electric track bike using the frame.

[0006] The present invention also provides laser processing equipment for processing the above-mentioned vehicle frame.

[0007] The frame according to the first embodiment of the present invention includes a chassis and a battery pack mounting frame, the chassis has a bottom plate, a sunken accommodating space is formed in the middle of the bottom plate, the opposite side walls at both ends of the accommodating space are arranged as a continuous curved surface with a smooth transition, a first mounting groove and a second mounting groove are arranged on the continuous curved surface, the side walls of the first mounting groove and the second mounting groove are both in a vertical direction, a first support is arranged in the first mounting groove, a first slide rail is arranged on the first support, a second support is arranged in the second mounting groove, a second slide rail is arranged on the second support, a third slide rail is arranged on the bottom surface of the accommodating space, the upper end surfaces of the first slide rail and the third slide rail are sliding surfaces, the upper end surface of the second slide rail and the side surface close to the accommodating space are sliding surfaces; the battery pack mounting frame is connected to a first slider, a second slider and a third slider. A slider and a third slider, the first slider is slidably connected to the first slide rail, the second slider is slidably connected to the second slide rail, and the third slider is slidably connected to the third slide rail; the battery pack mounting frame includes a bottom frame, an intermediate frame, a top frame and a support seat, the bottom frame and the intermediate frame are connected by a plurality of first vertical poles, the intermediate frame and the top frame are connected by a plurality of second vertical poles, the sides of the first vertical pole and the second vertical pole are provided with a plurality of support blocks distributed along the vertical interval, the support blocks are used to connect the mounting column, the mounting column is an aluminum alloy profile, and four sides are provided with through T-slots, the support seat is installed on the T-slot by hexagonal bolts, the support seat is used to support the battery pack, and the end of the mounting column can be installed on the T-slot by hexagonal bolts.

[0008] The frame according to the first embodiment of the present invention has at least the following beneficial effects:

[0009] The side walls of the battery pack mounting frame are distributed with multiple parallel mounting columns. The mounting columns are made of aluminum alloy profiles and have through T-slots on all four sides. According to the shape and size of the battery pack, a suitable position is selected to install the support seat, and the battery pack is fixed by the support seat. It can adapt to battery packs of various specifications to improve versatility. The mounting column can also be used as a partition. The end of the mounting column is installed in the T-slot of the mounting column as the side wall through a hexagonal bolt, thereby dividing the inner cavity of the battery pack mounting frame into a space suitable for the battery pack to install multiple battery packs. The chassis adopts the existing chassis, and the first mounting groove and the second mounting groove are processed on the continuous curved surface at both ends of the bottom plate of the chassis to install the slide rail to realize the sliding of the battery pack mounting frame, which is convenient for assembly and maintenance of the battery pack.

[0010] According to some embodiments of the first aspect of the present invention, a sealing plate is further included, and an edge of the sealing plate can be inserted into the T-slot to form a closed structure between two adjacent mounting posts.

[0011] According to some embodiments of the first aspect of the present invention, the support base includes a fixed bracket and a rotating plate, the lower end of the fixed bracket is provided with a through hole matching the hexagonal bolt, side plates are provided on both sides of the fixed bracket, the upper ends of the two side plates are connected with a rotating shaft, the rotating plate is rotatably connected to the rotating shaft, the rotating plate is provided with an abutting portion and a supporting portion distributed on both sides of the rotating shaft, the abutting portion abuts against the fixed bracket, and the supporting portion is used to support the battery pack.

[0012] According to some embodiments of the first aspect of the present invention, the upper end surface of the support portion is arranged horizontally, and the upper end surface of the support portion is connected to an elastic support column, which can be inserted into the support hole of the battery pack, and the elastic support column is a rubber block, a rubber spring or an air spring shock absorber.

[0013] According to some embodiments of the first aspect of the present invention, the upper end surface of the support portion is provided with a plurality of connection holes for mounting the elastic support column, and the plurality of connection holes are arranged at intervals in a direction away from the fixing bracket.

[0014] According to some embodiments of the first aspect of the present invention, the support block includes an angle iron and a reinforcing rib, one side plate of the angle iron is fixed to the first vertical pole or the second vertical pole, and the other side plate is connected to the mounting column by a hexagonal bolt, and the reinforcing rib is arranged on the inner side of the two side plates of the angle iron.

[0015] According to some embodiments of the first aspect of the present invention, the bottom frame, the middle frame and the top frame are all formed by welding square tubes, and threaded holes are provided on the sides of the square tubes to cooperate with the hexagonal bolts.

[0016] An electric track bike according to an embodiment of the second aspect of the present invention comprises the frame described in the embodiment of the first aspect.

[0017] According to the laser processing equipment of the third aspect embodiment of the present invention, it is used to process the frame described in the first aspect embodiment, and the laser processing equipment includes two gantries, an X-axis moving module, a Y-axis moving module, a Z-axis moving module and a controller. The two gantries are symmetrically arranged, the X-axis moving module is installed on the upper ends of the two gantries, the Y-axis moving module is connected to the X-axis moving module, the Z-axis moving module is connected to the Y-axis moving module, and the Z-axis moving module is connected with a rotating component, a laser cutting component and a path detection component. The path detection component is fixed to the side wall of the laser cutting component and is used to detect the shape change of the object to be cut. The rotating component is used to drive the laser cutting component and the path detection component to rotate, and the laser cutting component, the path detection component, the X-axis moving module, the Y-axis moving module, and the Z-axis moving module are all electrically connected to the controller.

[0018] The laser processing equipment according to the third aspect of the present invention has at least the following beneficial effects:

[0019] In order to adapt to the continuous curved surface processing requirements of the base plate, the laser processing equipment drives the laser cutting component to move in the three-dimensional direction of space through the X-axis moving module, the Y-axis moving module, and the Z-axis moving module, and then uses the path detection component to detect the shape changes of the continuous curved surface in real time, so that the moving path of the laser cutting component is consistent with the shape changes of the continuous curved surface, and the distance between the laser cutting component and the base plate and the cutting angle are accurate, which improves the processing accuracy, eliminates the shape and size errors of manual cutting, greatly reduces the processing time, and improves production efficiency.

[0020] According to some embodiments of the third aspect of the present invention, the path detection component includes three vertically arranged contact displacement sensors, the three contact displacement sensors are arranged in a row, and the arrangement direction is parallel to the movement direction of the laser cutting component in the horizontal plane, and the detection ends of the three contact displacement sensors are lower than the laser cutting component.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 A front view of a frame according to an embodiment of the first aspect of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the battery pack installation part in the embodiment of the first aspect of the present invention;

[0025] Figure 3 It is a schematic structural diagram of a battery pack mounting frame in an embodiment of the first aspect of the present invention;

[0026] Figure 4 It is a schematic structural diagram of a support base in some embodiments of the first aspect of the present invention;

[0027] Figure 5 It is a schematic structural diagram of a support base in some other embodiments of the first aspect of the present invention;

[0028] Figure 6 It is a schematic diagram of the assembly structure of the base plate in the embodiment of the first aspect of the present invention;

[0029] Figure 7 A front view of a laser processing device according to a third embodiment of the present invention;

[0030] Figure 8 for Figure 7 A magnified partial view of point A in the middle.

[0031] The figures are as follows:

[0032] The chassis 100, the continuous curved surface 101, the bottom plate 110, the first mounting groove 111, the second mounting groove 112, the first support 120, the first slide rail 121, the second support 130, the second slide rail 131, and the third slide rail 140;

[0033] Battery pack mounting frame 200, first slider 201, second slider 202, third slider 203, bottom frame 210, middle frame 220, top frame 230, first vertical pole 240, support block 241, second vertical pole 250, mounting column 260, T-slot 261, support seat 270, fixing bracket 271, side plate 2711, rotating shaft 2712, rotating plate 272, abutting portion 2721, supporting portion 2722, connecting hole 2723, elastic supporting column 273;

[0034] Battery pack 300;

[0035] Laser processing equipment 400 , gantry 410 , X-axis moving module 420 , Y-axis moving module 430 , Z-axis moving module 440 , rotating component 450 , laser cutting component 460 , and path detection component 470 . DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0040] It is understandable that, referring to Figures 1 to 3 An embodiment of the first aspect of the present invention provides a frame, which includes a structure for accommodating and fixing a battery pack, and is suitable for an electric track vehicle or other equipment that requires a battery pack.

[0041] The core components of the frame are the chassis 100 and the battery pack mounting frame 200. The chassis 100 is an existing chassis 100 product, which is modified to adapt to the new battery pack. The chassis 100 has a bottom plate 110, and a sunken accommodation space is designed in the middle of the bottom plate 110. The sunken design helps to reduce the overall height of the frame and improve the stability and passability of the vehicle. The side walls at both ends of the accommodation space are designed as smooth transition continuous curved surfaces 101. The continuous curved surface 101 is designed to adapt to the wheels and suspension structures at both ends, improve the dynamic performance of the vehicle and beautify the appearance of the electric track vehicle.

[0042] It can be understood that in order to install the slide rail to meet the sliding requirements of the battery pack mounting frame 200, a first mounting groove 111 and a second mounting groove 112 are opened on the continuous curved surface 101, and a first support 120 is installed in the first mounting groove 111, and a second support 130 is installed in the second mounting groove 112. The side walls of the first mounting groove 111 and the second mounting groove 112 are designed to be in a vertical direction, which can provide accurate positioning and simplify the assembly process. The first support 120 and the second support 130 only need to be processed with vertical side walls. After assembly, the position and angle of the first support 120 and the second support 130 can be guaranteed to be accurate. The first support 120 is installed with a first slide rail 121, and the second support 130 is installed with a second slide rail 131, so that the first slide rail 121 and the second slide rail 131 can meet the requirements of horizontal arrangement, realize the sliding of the battery pack mounting frame 200, and facilitate assembly and maintenance operations. In order to stably support the battery pack mounting frame 200, a third slide rail 140 is further provided on the bottom surface of the accommodation space, and one or more third slide rails 140 may be provided according to the size of the battery pack mounting frame 200. By providing the first slide rail 121, the second slide rail 131 and the third slide rail 140, the battery pack mounting frame 200 can be quickly moved on the chassis 100.

[0043] The battery pack mounting frame 200 is connected to the chassis 100 through the first slider 201, the second slider 202 and the third slider 203. The first slider 201 is slidably connected to the first slide rail 121, the second slider 202 is slidably connected to the second slide rail 131, and the third slider 203 is slidably connected to the third slide rail 140, so that the battery pack mounting frame 200 can slide smoothly on the chassis 100, which is convenient for the installation and maintenance of the battery pack. The slider can slide freely on the corresponding slide rails, wherein the upper end surfaces of the first slide rail 121 and the third slide rail 140 are sliding surfaces, and the upper end surface and side surfaces of the second slide rail 131 are sliding surfaces, mainly considering that the second slide rail 131 is located at the bottom of the continuous curved surface 101, which is close to the bottom of the battery pack mounting frame 200. In addition to supporting the battery pack mounting frame 200, the second slide rail 131 also needs to limit the position of the battery pack mounting frame 200 in the horizontal direction. Therefore, the upper end surface and side surfaces of the second slide rail 131 are set as sliding surfaces. Accordingly, the shape of the second slider 202 is set to be L-shaped, and it slides with the upper end surface and side surfaces of the second slide rail 131. The sliding surface can be coated with a special coating to ensure smooth sliding and reduce wear.

[0044] In addition, in order to further improve the stability and safety of the frame, reinforcing ribs or supporting structures can be designed on the periphery of the bottom plate 110 to enhance the rigidity and load-bearing capacity of the chassis 100. The reinforcing structure can be an integral structure with the bottom plate 110 or installed as a separate component.

[0045] The battery pack mounting frame 200 is a key component of the vehicle frame, and includes a bottom frame 210, an intermediate frame 220, a top frame 230, and a plurality of support seats 270. The bottom frame 210 and the intermediate frame 220 are connected as a whole through a plurality of first vertical poles 240, and the intermediate frame 220 and the top frame 230 are connected as a whole through a plurality of second vertical poles 250, thereby forming a solid support structure to provide stable support and fixation for the battery pack 300, and confine the battery pack 300 in the accommodation space of the chassis 100. In addition to providing vertical support, the first vertical pole 240 and the second vertical pole 250 also provide a mounting structure. A plurality of support blocks 241 distributed along the vertical intervals are arranged on the sides of the first vertical pole 240 and the second vertical pole 250. The function of the support block 241 is to connect the mounting column 260 and provide a channel for fixing the mounting column 260.

[0046] The mounting column 260 is made of aluminum alloy, which is widely used due to its light weight and high strength. Figure 2The four sides of the aluminum alloy profile are provided with through T-shaped slots 261. The design allows the support seat 270 and other components to be easily installed on the mounting column 260 through hexagonal bolts. The support seat 270 is used to support the battery pack 300 to ensure the stability and safety of the battery pack 300 during the driving of the vehicle. It can be understood that since a plurality of support blocks 241 are arranged on the sides of the first vertical pole 240 and the second vertical pole 250, such as Figure 3 As shown, the side wall of the battery pack mounting frame 200 is composed of a plurality of horizontal mounting columns 260. According to the shape and size of the battery pack 300, a suitable mounting column 260 is selected to fix the support seat 270, so that battery packs 300 of various specifications can be accommodated, thereby improving versatility. In addition, the end of the mounting column 260 can also be installed in the T-slot 261 by a hexagonal bolt, so that the mounting column 260 can be quickly fixed between two mounting columns 260, that is, the mounting column 260 can be used to form a partition structure to divide the interior of the battery pack mounting frame 200 into suitable spaces, for example, the battery packs 300 with a smaller length can be closely arranged in the separated space, and the battery packs 300 with a larger length can be arranged in the remaining space inside the battery pack mounting frame 200. Alternatively, the mounting column 260 is used to divide the interior of the battery pack mounting frame 200 into a plurality of spaces of the same size to accommodate a plurality of battery packs 300 of uniform specifications.

[0047] It should be understood that since the support base 270 can be moved in the T-slot 261 and fixed at will, the mounting columns 260 can be assembled arbitrarily with each other to separate the space. The battery pack mounting rack 200 can install battery packs 300 of various specifications. After replacing the battery pack 300 supplier or the battery pack 300 product is replaced, the new battery pack 300 can be installed in the battery pack mounting rack 200 through simple adjustment operations, thereby reducing the time and cost of developing the battery pack 300 mounting structure and reducing production costs.

[0048] In practical applications, the design of the battery pack mounting frame 200 allows the battery pack 300 to be fine-tuned within the accommodation space of the frame chassis 100 to accommodate different battery configurations and layout requirements. In addition, the mounting frame adopts a modular design and can be expanded or reconfigured as needed to accommodate future battery technology upgrades or vehicle design changes.

[0049] It is understood that in some embodiments of the present invention, the battery pack mounting frame 200 includes a sealing plate, the edge of which can be conveniently inserted into the T-slot 261 on the mounting post 260, so that the sealing plate and the mounting post 260 form a closed structure, allowing the sealing plate to be connected to the mounting post 260 through a simple insertion action to form a firm connection. This connection method of the sealing plate not only simplifies the assembly process, but also provides a method for quickly disassembling and replacing the sealing plate, which is particularly convenient when maintenance or replacement of the battery pack 300 is required.

[0050] By using a sealing plate between two adjacent mounting posts 260, a closed structure can be formed, which helps to protect the battery pack 300 from dust, debris and other environmental factors. The closed structure can also provide additional rigidity and strength, enhancing the overall stability and durability of the frame. In addition, the sealing plate can be designed to have different lengths and widths to accommodate battery packs 300 of different sizes and shapes, and a sealing gasket can be provided between the sealing plate and the mounting post 260 to improve the sealing. The sealing plate can be made of a strong and durable material, such as a steel plate or an aluminum alloy plate, to ensure that it can withstand the vibration and impact during the driving of the vehicle. The surface of the sealing plate can be painted or coated to obtain insulating properties.

[0051] Reference Figure 4 , a design scheme of a support seat 270 is proposed. The support seat 270 is a key component for installing the battery pack 300, which directly affects the stability and reliability of the battery pack 300. The support seat 270 includes a fixed bracket 271 and a rotating plate 272. The lower end of the fixed bracket 271 is provided with a through hole that cooperates with the hexagonal bolt. The through hole allows the fixed bracket 271 to be connected to the mounting column 260 through the hexagonal bolt to achieve the fixation of the support seat 270. Side plates 2711 are provided on both sides of the fixed bracket 271. The upper end of the side plate 2711 is connected to a rotating shaft 2712. The rotating plate 272 has a hole that cooperates with the rotating shaft 2712, and the rotating plate 272 can rotate around the rotating shaft 2712. The rotating plate 272 is provided with abutment portions 2721 and support portions 2722 distributed on both sides of the rotating shaft 2712. The abutment portion 2721 abuts against the fixed bracket 271 to provide a stable support point for the rotating plate 272, and the support portion 2722 is used to support the battery pack 300 to ensure the stability of the battery pack 300 during the driving of the vehicle. The fixed bracket 271 can be formed by a sheet metal process using a steel plate as a base material, and the side plates 2711 on both sides are formed by bending. Considering the requirements for structural strength, a double-layer structure can be adopted.

[0052] The above structure allows the support base 270 to rotate freely on the fixed bracket 271. When assembling or replacing the battery pack 300, the rotating plate 272 can be flipped over to avoid it, simplifying the operation without disassembling the support base 270. In addition, the design of the support base 270 also takes into account the convenience of installation and maintenance. The use of hexagonal bolts makes the installation and removal of the support base 270 simple and quick.

[0053] Furthermore, the upper end surface of the support portion 2722 is arranged horizontally, which can ensure that the contact surface between the battery pack 300 and the support portion 2722 is flat, which is conducive to the horizontal installation and fixation of the battery pack 300. The upper end surface of the support portion 2722 is connected with an elastic support column 273, which can be inserted into the support hole of the battery pack 300 to provide elastic support for the battery pack 300 in the vertical direction. The design of the elastic support column 273 allows the battery pack 300 to have a certain displacement space when it is vibrated or impacted, thereby reducing damage to the battery pack 300. The elastic support column 273 can be made of different materials and forms, including rubber blocks, rubber springs or air spring shock absorbers. Due to their good elasticity and damping properties, rubber blocks and rubber springs can effectively absorb vibrations, reduce noise, and have good aging resistance and corrosion resistance. The air spring shock absorber provides adjustable elastic support, and its stiffness and damping can be adjusted according to different loads and usage environments to achieve the best vibration reduction effect.

[0054] It is understandable that the upper end surface of the support portion 2722 is designed with a plurality of connection holes 2723, and the plurality of connection holes 2723 can all be installed with elastic support columns 273. The plurality of connection holes 2723 are arranged at intervals in a direction away from the fixed bracket 271, and a plurality of installation points are provided, so that the installation position can be flexibly selected according to the specific size of the battery pack 300 to achieve the best support effect. In practical applications, the elastic support column 273 can be installed by selecting a suitable connection hole 2723 according to the support requirements of the battery pack 300. For example, for a heavier battery pack 300, a plurality of connection holes 2723 can be selected to distribute and install a plurality of elastic support columns 273 to provide a more uniform support force. For an irregularly shaped battery pack 300, the position of the elastic support column 273 can be adjusted to ensure that the contact surface between the battery pack 300 and the support portion 2722 fits well.

[0055] In addition, the design of the connection hole 2723 can also take into account compatibility with other installation accessories, for example, it can be designed to be compatible with standard bolts or nuts to facilitate installation using universal tools. The size and shape of the connection hole 2723 can also be standardized according to the specifications of the elastic support column 273 to accommodate different models of elastic support columns 273.

[0056] It is understandable that each battery pack 300 can be supported and positioned using multiple support seats 270, and the support seats 270 can be evenly distributed around the battery pack 300. A clamping piece can also be provided, which is also connected to the mounting column 260 by a hexagonal bolt. The clamping piece is provided with a right-angle groove, and the corners of the battery pack 300 are inserted into the right-angle groove, and the battery pack 300 is clamped from above by the clamping piece.

[0057] In other embodiments of the present invention, Figure 5 As shown, another structure of a support base 270 is proposed. The support base 270 includes a fixed bracket 271 and a rotating plate 272. The difference is that the rotating plate 272 is located on the lower side of the fixed bracket, and the hexagonal bolt is on the upper side of the fixed bracket, so that the contact surface between the support base 270 and the battery pack 300 is lower and closer to the bottom plate 110.

[0058] It is understandable that the support block 241 is composed of an angle iron and a reinforcing rib. The angle iron is a commonly used hardware, usually composed of two mutually perpendicular flat metals, forming an "L" shaped structure. In this design, one side plate of the angle iron is fixed to the first vertical pole 240 or the second vertical pole 250, which can be achieved by welding, bolting or other appropriate fixing methods. The other side plate of the angle iron is connected to the mounting column 260 by a hexagonal bolt, and the hexagonal bolt provides a reliable and adjustable connection method so that the mounting column 260 can be firmly fixed on the support block 241. The reinforcing rib is arranged on the inner side of the two side plates of the angle iron. The function of the reinforcing rib is to enhance the structural rigidity and structural strength of the support block 241, thereby improving the stability of the entire support structure. The reinforcing rib can be a flat plate or a metal plate with a special shape, such as a triangular steel plate.

[0059] It is understandable that the bottom frame 210, as the basic part of the entire frame, is connected to the middle frame 220 through a plurality of first vertical rods 240 to provide vertical support for the frame. The middle frame 220 is located above the bottom frame 210 and is connected to the top frame 230 through a plurality of second vertical rods 250 to form the upper structure of the frame. The above-mentioned layered structure not only improves the structural stability of the frame, but also provides an increased installation space for the battery pack mounting frame 200.

[0060] The bottom frame 210, the middle frame 220 and the top frame 230 are all welded from square tubes. The selection of square tubes is conducive to lightweight and optimized load-bearing capacity. The technical requirements for square tube welding include precise welding positions, clean pipe surfaces, suitable welding materials and processes, and effective welding temperature control to ensure the welding quality while ensuring the overall performance of the frame. Threaded holes can also be set on the side of the square tube, and the threaded holes are used to cooperate with hexagonal bolts to facilitate the installation of the support seat 270 or other components. The design of the threaded holes allows quick installation and disassembly, which is convenient for the assembly and maintenance of the frame.

[0061] The second embodiment of the present invention provides an electric track vehicle, which adopts the frame described in the first embodiment. By modifying the existing chassis 100 and designing a new battery pack mounting frame 200, it has high versatility and can be adapted to battery packs 300 of various structures.

[0062] Reference Figure 6 Since both ends of the bottom plate 110 are continuous curved surfaces 101 with smooth transitions, it is difficult to position the first mounting groove 111 and the second mounting groove 112 during processing, and processing deviations are likely to occur, which affects the assembly of the battery pack mounting frame 200 .

[0063] To this end, the embodiment of the third aspect of the present invention provides a laser processing device 400, which is specifically used to process the first installation groove 111 and the second installation groove 112 on the continuous curved surface 101 of the base plate 110. The laser processing device 400 includes two gantries 410, an X-axis moving module 420, a Y-axis moving module 430, a Z-axis moving module 440 and a controller. The X-axis moving module 420, the Y-axis moving module 430, and the Z-axis moving module 440 are used to achieve precise laser cutting in the three-dimensional direction of space. Figure 7As shown, the two gantries 410 are symmetrically arranged, providing a stable support structure for the laser processing equipment 400. The X-axis moving module 420 is installed at the upper end of the two gantries 410, and the Y-axis moving module 430 is connected to the X-axis moving module 420, and the Z-axis moving module 440 is connected to the Y-axis moving module 430. The above structure enables the Z-axis moving module 440 to perform flexible two-dimensional movement in the plane, and the Z-axis moving module 440 provides movement in the vertical direction. The Z-axis moving module 440 is connected with a rotating component 450, a laser cutting component 460 and a path detection component 470. The rotating component 450 is used to drive the laser cutting component 460 and the path detection component 470 to rotate, which increases the flexibility and diversity of processing. The laser cutting assembly 460 is responsible for performing the actual cutting work, while the path detection assembly 470 is fixed on the side wall of the laser cutting assembly 460 to detect the shape change of the object to be cut. The laser cutting assembly 460, the path detection assembly 470, the X-axis moving module 420, the Y-axis moving module 430, and the Z-axis moving module 440 are all electrically connected to the controller. The path detection assembly 470 detects the changes of the continuous curved surface 101 in real time and feeds the information back to the controller, which controls the actions of the laser cutting assembly 460, the path detection assembly 470, the X-axis moving module 420, the Y-axis moving module 430, and the Z-axis moving module 440, so that the laser cutting assembly 460 can move with the changes of the continuous curved surface 101, ensure the stability of the gap, and facilitate accurate cutting. In addition, the Z-axis moving module 440 ensures the verticality of the laser cutting assembly 460, so that the sides of the cut first mounting groove 111 and the second mounting groove 112 are both vertical.

[0064] Reference Figure 8 In some embodiments, the path detection component 470 includes three vertically arranged contact displacement sensors, which are arranged in a row, and the arrangement direction is parallel to the movement direction of the laser cutting component 460 in the horizontal plane. The above layout allows the sensor to detect the height change of the object to be cut in real time during the processing, ensuring that the laser cutting component 460 maintains a constant distance from the continuous curved surface 101, thereby improving the processing accuracy and efficiency. The detection end of the contact displacement sensor is designed to be lower than the laser cutting component 460. The contact displacement sensor can contact the continuous curved surface 101 before the laser cutting component 460 to detect the shape change of the continuous curved surface 101, and then the controller controls the laser cutting component 460 to emit laser for precise cutting.

[0065] The contact displacement sensor has a movable detection end, which moves with the displacement of the continuous curved surface 101, thereby triggering a change in the electrical signal, and then converting the electrical signal into a displacement measurement value. The vertical arrangement of the contact displacement sensor helps to capture the vertical displacement of the object being cut, which is particularly important for dynamic adjustment during the processing process.

[0066] In actual applications, the design of the path detection component 470 also takes into account the coordinated work with the laser cutting component 460. When the moving direction of the laser cutting component 460 changes, the path detection component 470 is driven by the rotating component 450 to rotate, so that the arrangement direction of the three contact displacement sensors remains parallel to the moving direction of the laser cutting component 460.

[0067] It is understandable that, considering that the first mounting groove 111 and the second mounting groove 112 are both rectangular grooves, when cutting a corner position, the movement of the laser cutting assembly 460 needs to be reduced to ensure the cutting accuracy. The movement speed of the laser cutting assembly 460 is in accordance with the following equation:

[0068]

[0069] in, is the maximum speed when cutting a straight line of a rectangular slot, is the speed after the corner position is decelerated, t is the time from the start of cutting to the current position, T is the time from cutting to the corner position, is the time constant used to control the deceleration and acceleration process, and e is the natural constant. Each side of the rectangular slot is divided into three sections, the middle section is the uniform speed section (the moving speed is ), the section before the corner is the deceleration section, the section after the corner is the acceleration section, and a uniform speed is used at the corner position (the moving speed is ), according to the above speed equation, the processing process is: the moving speed of the laser cutting component 460 in the uniform speed section is , decelerate in the deceleration section, and then Processing corner position, in the acceleration section, the speed is increased to The lengths of the deceleration section and the acceleration section can be set to 14%-17% of the side length of the rectangular slot.

[0070] It is understandable that the X-axis moving module 420, the Y-axis moving module 430, and the Z-axis moving module 440 can all use servo motors and gear rack assemblies. The servo motor is installed on the sliding seat, and the gear is driven by the servo motor to rotate. The gear is meshed with the rack, and the rack is fixed, so as to realize the movement of the sliding seat. By using the high-precision characteristics of the servo motor, the displacement distance can be accurately controlled, and the moving trajectory of the laser cutting assembly can be accurately controlled to cut out the first installation groove 111 and the second installation groove 112 with accurate shape and position. The rotating assembly 450 uses a precision gear reducer driven by a servo motor to accurately control the rotation angle of the laser cutting assembly 460 and the path detection assembly 470.

[0071] The path detection component 470 is composed of three vertically arranged contact displacement sensors, which are arranged parallel to the moving direction of the laser cutting component in the horizontal plane, and the detection end is lower than the laser cutting component. The three contact displacement sensors can provide real-time height change data along the laser cutting path.

[0072] It is understandable that the controller is designed with a compensation algorithm, and the height value of each contact displacement sensor (where i = 1, 2, 3), can be expressed as: ,in is the height value of the ideal cutting path at the detection position, is the measurement error of the contact displacement sensor.

[0073] The average difference is achieved by calculating the average value of the three contact displacement sensors:

[0074]

[0075] Then, calculate the deviation of each contact displacement sensor's measured value from the average value:

[0076]

[0077] The path compensation formula is:

[0078]

[0079] The moving path compensation value of the laser cutting component 460 is calculated by the path compensation formula, and the laser cutting component 460 can accurately adjust the predetermined cutting path to improve the processing quality and accuracy.

[0080] Considering that the influence of the measurement error of the contact displacement sensor is different at different positions, a weight coefficient is added (where i = 1, 2, 3), the path compensation formula is:

[0081]

[0082] Weight coefficient It is calculated based on the test conditions before processing. By increasing the weight coefficient, the predetermined cutting path is further adjusted to improve the processing accuracy.

[0083] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A vehicle frame, characterized in that: include: The chassis comprises a bottom plate, a sunken accommodating space is formed in the middle of the bottom plate, opposite side walls at both ends of the accommodating space are configured as smooth transition continuous curved surfaces, a first mounting groove and a second mounting groove are provided on the continuous curved surface, the side walls of the first mounting groove and the second mounting groove are both in a vertical direction, a first support is provided in the first mounting groove, a first slide rail is provided on the first support, a second support is provided in the second mounting groove, a second slide rail is provided on the second support, a third slide rail is provided on the bottom surface of the accommodating space, the upper end surfaces of the first slide rail and the third slide rail are sliding surfaces, and the upper end surface of the second slide rail and the side surface close to the accommodating space are sliding surfaces; A battery pack mounting frame, wherein the battery pack mounting frame is connected to a first slider, a second slider, and a third slider, wherein the first slider is slidably connected to the first slide rail, the second slider is slidably connected to the second slide rail, and the third slider is slidably connected to the third slide rail; The battery pack mounting frame includes a bottom frame, an intermediate frame, a top frame and a support seat. The bottom frame and the intermediate frame are connected by multiple first vertical poles, and the intermediate frame and the top frame are connected by multiple second vertical poles. The sides of the first vertical poles and the second vertical poles are provided with multiple support blocks distributed at vertical intervals. The support blocks are used to connect the mounting columns. The mounting columns are aluminum alloy profiles, and four sides are provided with through T-slots. The support seat is installed in the T-slot by hexagonal bolts. The support seat is used to support the battery pack, and the end of the mounting column can be installed in the T-slot by hexagonal bolts.

2. The frame according to claim 1, wherein: It also includes a sealing plate, the edge of which can be inserted into the T-slot, so that a closed structure is formed between two adjacent mounting posts.

3. The frame according to claim 1, wherein: The support seat includes a fixed bracket and a rotating plate. The lower end of the fixed bracket is provided with a through hole that matches the hexagonal bolt. Side plates are provided on both sides of the fixed bracket. The upper ends of the two side plates are connected to a rotating shaft. The rotating plate is rotatably connected to the rotating shaft. The rotating plate is provided with an abutting portion and a supporting portion distributed on both sides of the rotating shaft. The abutting portion abuts against the fixed bracket, and the supporting portion is used to support the battery pack.

4. The frame according to claim 3, wherein: The upper end surface of the support portion is arranged horizontally, and the upper end surface of the support portion is connected to an elastic support column, which can be inserted into the support hole of the battery pack. The elastic support column is a rubber block, a rubber spring or an air spring shock absorber.

5. The vehicle frame according to claim 4, wherein: The upper end surface of the support portion is provided with a plurality of connection holes for mounting the elastic support column, and the plurality of connection holes are arranged at intervals in a direction away from the fixing bracket.

6. The frame according to claim 1, wherein: The support block includes an angle iron and a reinforcing rib. One side plate of the angle iron is fixed to the first vertical pole or the second vertical pole, and the other side plate is connected to the mounting column through a hexagonal bolt. The reinforcing rib is arranged on the inner side of the two side plates of the angle iron.

7. The frame according to claim 1, wherein: The bottom frame, the middle frame and the top frame are all formed by welding square tubes, and threaded holes are provided on the sides of the square tubes to match the hexagonal bolts.

8. Electric track bike, characterized in that: Comprising the frame according to any one of claims 1 to 7.

9. Laser processing equipment for processing the bottom plate of a vehicle frame according to any one of claims 1 to 7, characterized in that: The laser processing equipment includes two gantries, an X-axis moving module, a Y-axis moving module, a Z-axis moving module and a controller. The two gantries are symmetrically arranged, the X-axis moving module is installed at the upper ends of the two gantries, the Y-axis moving module is connected to the X-axis moving module, the Z-axis moving module is connected to the Y-axis moving module, the Z-axis moving module is connected to a rotation component, a laser cutting component and a path detection component, the path detection component is fixed to the side wall of the laser cutting component and is used to detect the shape change of the cut object, the rotation component is used to drive the laser cutting component and the path detection component to rotate, the laser cutting component, the path detection component, the X-axis moving module, the Y-axis moving module, and the Z-axis moving module are all electrically connected to the controller.

10. The laser processing equipment according to claim 9, characterized in that The path detection component includes three vertically arranged contact displacement sensors, which are arranged in a row and in a direction parallel to the movement direction of the laser cutting component in the horizontal plane. The detection ends of the three contact displacement sensors are lower than the laser cutting component.

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