Electric vehicle frame welding device and using method

Abstract

The invention provides an electric vehicle frame welding device and a using method, and relates to the technical field of frame welding, the electric vehicle frame welding device comprises a box body, two hydraulic rods are fixedly mounted at the top of the box body, a lifting plate is fixedly connected to the bottoms of the hydraulic rods, a moving groove is formed in the bottom of the lifting plate, a driving block is slidably connected into the moving groove, and a welding head is connected to the bottom of the driving block; two fixing rods are arranged in the box body, and the top ends of the fixing rods are rotationally connected with a rotating plate; the adjusting assembly is arranged between the rotating plate and the fixing rod and used for changing the inclination angle of the rotating plate. According to the device, through the arrangement of the adjusting assembly, the inclination angle of the rotating plate can be changed so as to adapt to frames of different shapes, and meanwhile the position and height of the rotating plate can be changed according to the welding position; and through the arrangement of the clamping assembly, frames with different diameters can be clamped and fixed, meanwhile, the contact area between the clamping assembly and the frame is increased when the clamping assembly clamps the frame, and the clamping stability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle frame welding, in particular to an electric vehicle frame welding device and a use method thereof. Background Art

[0002] Electric vehicles are one of the main means of transportation in daily life. Electric vehicles include load-bearing systems, energy systems, drive systems, braking systems and driving systems, among which the load-bearing system includes the electric vehicle frame. The electric vehicle frame is one of the core components of the electric vehicle, supporting the weight of the vehicle body, riders and all cargo, and assuming important safety functions. The electric vehicle frame is almost always formed by welding, and is composed of many metal tubes welded into a three-dimensional structure.

[0003] When welding an electric vehicle frame, the frame needs to be fixed to ensure the accuracy and stability of the frame welding. However, the existing welding fixture is fixed in position and cannot be adaptively adjusted to the length, position and shape of the frame, which has certain limitations. At the same time, the existing fixture usually directly clamps the frame through two clamping plates. The contact points between the clamping plates and the frame are linear, and the clamping force applied to the frame is limited, which makes the frame prone to deflection during welding and cannot meet the existing fixation requirements for frame welding. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the embodiments of the present invention provide an electric vehicle frame welding device and a method of use, which at least partially solve the above technical problems.

[0005] To achieve the above object, the present invention provides the following technical solution, an electric vehicle frame welding device, comprising: A box body, a lifting plate is provided inside the box body, a welding head is provided at the bottom of the lifting plate, two fixing rods are provided inside the box body, a rotating plate is rotatably connected to the top of the fixing rod, and air extraction boxes are installed on opposite sides of the box body, and an air compressor is installed inside the air extraction box; An adjusting component disposed between the rotating plate and the fixing rod, and used for changing the tilt angle of the rotating plate; The adjustment component comprises: Two arc-shaped blocks connected to the bottom of the rotating plate; A fixing block connected to opposite sides of the fixing rod; A sealing cavity is provided inside the fixing rod, a sealing block is slidably connected inside the sealing cavity, two receiving grooves are provided on opposite sides of the sealing block, a transmission block is rotatably connected inside the receiving groove, and one end of the transmission block is rotatably connected to a ejection block.

[0006] Furthermore, an arc groove is provided on the surface of the arc block, and two arc blocks are located on both sides of the fixing rod, the fixing block passes through the arc groove, one end of the ejection block is connected to a friction plate, and the friction plate corresponds to the position of the arc block, the surface of the fixing block is provided with a thread, and a nut is threadedly connected to the outer side of the fixing block.

[0007] Furthermore, a return spring is connected between the bottom of the sealing block and the sealing cavity, an exhaust pipe is connected to the top of the air compressor, one end of the exhaust pipe is communicated with the sealing cavity, and the connection between the exhaust pipe and the sealing cavity is located above the sealing block.

[0008] Furthermore, two adjustment slots are provided inside the box body, an adjustment rod is rotatably connected inside the adjustment slot, an adjustment block is provided on the outside of the adjustment rod, an electric telescopic rod is installed on the top of the adjustment block, and the top of the electric telescopic rod is connected to the fixed rod, a thread is provided on the outside of the adjustment rod, and an adjustment hole is provided inside the adjustment block and is threadedly connected to the adjustment rod.

[0009] Furthermore, a moving assembly is provided inside the box body for changing the position of the welding head, and the moving assembly includes: Two hydraulic rods installed on the top of the box, the bottoms of the hydraulic rods are connected to the lifting plate; A moving groove is provided at the bottom of the lifting plate, a driving motor is installed inside the lifting plate, one side of the driving motor is drivingly connected to a driving rod, and one end of the driving rod is connected to the inner wall of the moving groove through a bearing; A driving block is arranged outside the driving rod, and the top end of the welding head is connected to the driving block. The driving rod is provided with a thread on the outside, and a threaded hole matching with the driving rod is opened inside the driving block.

[0010] Furthermore, a clamping assembly is provided on the surface of the rotating plate, and the clamping assembly includes: A plurality of clamping grooves are provided on the surface of the rotating plate, and the plurality of clamping grooves are evenly arranged and distributed; A first clamping plate is arranged inside the clamping groove, and a plurality of second clamping plates are connected to the top of the rotating plate, and the second clamping plates correspond to the positions of the first clamping plates; A rubber block connected to the second clamping plate and the first clamping plate on one side opposite to the second clamping plate, wherein the second clamping plate and the first clamping plate on one side opposite to the first clamping plate are both rotatably connected to two rubber plates; A rotating hole is opened on one side of the rotating plate, a rotating rod is passed through the rotating hole, and one end of the rotating rod is connected to the first clamping plate through a bearing, and threads are arranged on the inner wall of the rotating hole and the surface of the rotating rod.

[0011] Furthermore, the two rubber plates are symmetrically arranged, and the surfaces of the rubber blocks and the rubber plates are both provided with curvatures.

[0012] Furthermore, an extrusion cavity is provided inside the first clamping plate and the second clamping plate, an extrusion block is slidably connected inside the extrusion cavity, and an extrusion spring is connected between the extrusion block and the extrusion cavity, an air pipe communicating with the extrusion cavity is provided inside the first clamping plate and the second clamping plate, and a section of the air pipe is arranged in an arc shape, an arc rod is connected to one side of the rubber plate, and one end of the arc rod extends into the air pipe and is connected to a piston block.

[0013] Furthermore, a ventilation pipe is provided between the box body and the air extraction box, a filter frame is provided inside the air extraction box, an air supply pipe is connected to the top of the air compressor, and one end of the air supply pipe is respectively connected to the multiple extrusion chambers.

[0014] Furthermore, a method for using an electric vehicle frame welding device comprises the following steps: S1, fix the frame, place the frame on the rotating plate, rotate the rotating rod, so that the rotating rod drives the first clamping plate to move in the direction of the second clamping plate, and clamp the frame on the rotating plate; S2, then loosen the nut on the fixing block to release the restriction between the arc plate and the fixing block, so that the inclination angle of the rotating plate can be adjusted according to the arc of the frame. After the adjustment is completed, re-thread the nut onto the fixing block to fix the arc plate in the current position; S3, then according to the length of the frame, the adjusting rod is rotated, so that the adjusting rod drives the adjusting block to move under the action of the screw thread, and then drives the electric telescopic rod, the fixed rod and the rotating plate to move, so as to adjust the relative position of the frames on the two rotating plates, so that the welding parts of the two frames are in contact; S4, then changing the height of the rotating plate by extending and retracting the electric telescopic rod, so that the welding positions of the frames on the two rotating plates are aligned, which is convenient for subsequent welding; S5. Then, the contact points of the two frames are welded by welding heads or manual welding. During the welding process, the air inside the vacuum box is extracted by an air compressor, so that suction is generated inside the vacuum box to remove floating metal particles and smoke generated by welding inside the box; S6. When the air compressor is working, the gas in the sealing cavity is extracted through the exhaust pipe, so that the air pressure in the space above the sealing block drops. The sealing block is driven upward by the air pressure difference, and then the sealing block pushes the friction plate out through the transmission block and the ejection block, and is close to the arc block, thereby increasing the fixing stability of the arc block; S7. When the air compressor is working, part of the drawn gas is delivered to the extrusion chamber through the air pipe, so that the air pressure on both sides of the extrusion block changes, and the extrusion block moves under the action of the air pressure difference, and the gas in the extrusion chamber is pressed into the air pipe, so that the piston block drives the arc rod 507 to move out under the action of the air pressure, so that the arc rod drives the rubber plate to be close to the surface of the frame, thereby increasing the fixing area of ​​the frame. The present invention provides an electric vehicle frame welding device and a use method, which have the following beneficial effects: The invention has the advantages that the tilt angle of the rotating plate can be changed by adjusting the setting of the components, so that the staff can clamp and fix the frame with the arc structure, and the subsequent welding is convenient to adapt to frames of different shapes. At the same time, the relative position and height of the rotating plate can be changed according to the welding position, so as to improve the overall applicability. Secondly, by setting the clamping assembly, frames of different diameters can be clamped and fixed without replacing the corresponding clamps, and at the same time, the contact area and friction force when clamping the frame can be increased, thereby improving the clamping stability of the frame; Next, through the setting of the vacuum box and the air compressor, the fume and floating metal particles generated by the welding can be extracted and filtered, and the gas can be pressed into the extrusion chamber to drive the rubber plate in the clamping assembly to rotate, and the gas in the sealing chamber can be extracted, thereby driving the sealing block, the transmission block and the ejection block to move, so that the friction plate cooperates with the nut to clamp and fix the arc block, thereby ensuring the stability of the inclination angle of the rotating plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0016] Figure 2 It is a cross-sectional view of the overall structure of an embodiment of the present invention.

[0017] Figure 3 Schematic diagram of the rotating plate structure of an embodiment of the present invention.

[0018] Figure 4 Schematic diagram of the first clamping plate structure according to an embodiment of the present invention.

[0019] Figure 5 2 is a cross-sectional view of a fixing rod structure according to an embodiment of the present invention.

[0020] Figure 6 Schematic diagram of the clamping groove structure of an embodiment of the present invention.

[0021] Figure 7 Schematic diagram of the sealing block structure of an embodiment of the present invention.

[0022] Figure 8 For the embodiment of the present invention Figure 2 Enlarged view of point A in .

[0023] Fig. 9 For the embodiment of the present invention Figure 6 Enlarged view of point B in .

[0024] Figure 1-Figure 9 Middle: 1. Box; 101. Adjustment slot; 102. Adjustment rod; 103. Adjustment block; 104. Electric telescopic rod; 2. Hydraulic rod; 201. Lifting plate; 202. Moving slot; 203. Driving motor; 204. Driving rod; 205. Driving block; 206. Welding head; 3. Fixed rod; 301. Fixed block; 302. Sealing chamber; 303. Sealing block; 304. Storage slot; 305. Transmission block; 306. Ejector block; 307 , friction plate; 308, return spring; 4, rotating plate; 401, arc block; 5, clamping groove; 501, rotating rod; 502, first clamping plate; 503, second clamping plate; 504, extrusion chamber; 505, extrusion spring; 506, air pipe; 507, arc rod; 508, rubber plate; 6, rubber block; 7, vacuum box; 701, ventilation pipe; 702, filter frame; 703, air compressor; 704, air pipe; 705, vacuum pipe. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the embodiments of the present invention.

[0026] The disclosure below provides many different embodiments or examples to realize different structures of embodiments of the present invention. In order to simplify the disclosure of embodiments of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit embodiments of the present invention. In addition, the embodiments of the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the embodiments of the present invention provide various specific processes and examples of materials, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0027] The present invention aims to solve the shortcomings existing in the background technology and provides an electric vehicle frame welding device and a method of use. By adjusting the setting of the component, the inclination angle of the rotating plate can be changed to adapt to frames of different shapes. At the same time, the position and height of the rotating plate can be changed according to the welding position. Through the setting of the clamping component, frames of different diameters can be clamped and fixed, and the contact area when clamping the frame is increased, thereby improving the stability of the clamping.

[0028] The embodiment of the present invention provides an electric vehicle frame welding device and a method for using the same, which are described in detail below. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.

[0029] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] See also Figure 1-Figure 9 In the embodiment, an electric vehicle frame welding device is provided, comprising: a box body 1, a lifting plate 201 is provided inside the box body 1, a welding head 206 is provided at the bottom of the lifting plate 201, two fixed rods 3 are provided inside the box body 1, a rotating plate 4 is rotatably connected to the top of the fixed rod 3, vacuum boxes 7 are installed on opposite sides of the box body 1, and an air compressor 703 is installed inside the vacuum box 7; an adjusting component is arranged between the rotating plate 4 and the fixed rod 3, which is used to change the inclination angle of the rotating plate 4.

[0031] Among them, by adjusting the setting of the component, the inclination angle of the rotating plate 4 can be changed, which is convenient for the staff to clamp and fix the frame with the arc structure, and is convenient for subsequent welding to adapt to frames of different shapes. At the same time, the relative position and height of the rotating plate 4 can be changed according to the welding position to improve the overall applicability; secondly, through the setting of the clamping component, frames of different diameters can be clamped and fixed without replacing the corresponding clamps. At the same time, the contact area and friction force when clamping with the frame can be increased, and the clamping stability of the frame can be improved; then, through the setting of the vacuum box 7 and the air compressor 703, the smoke and floating metal particles generated by welding can be extracted and filtered, and the gas can be pressed into the extrusion chamber 504 to drive the rubber plate 508 in the clamping assembly to rotate, and the gas in the sealing chamber 302 can be extracted, thereby driving the sealing block 303, the transmission block 305 and the ejection block 306 to move, so that the friction plate 307 cooperates with the nut to clamp and fix the arc block 401, thereby ensuring the stability of the inclination angle of the rotating plate 4.

[0032] Furthermore, the adjustment component includes: two arc blocks 401 connected to the bottom of the rotating plate 4; fixed blocks 301 connected to the opposite sides of the fixed rod 3; a sealed cavity 302 opened inside the fixed rod 3, a sealing block 303 is slidably connected inside the sealed cavity 302, two receiving grooves 304 are opened on opposite sides of the sealing block 303, a transmission block 305 is rotatably connected inside the storage groove 304, one end of the transmission block 305 is rotatably connected to the ejection block 306, an arc groove is opened on the surface of the arc block 401, and the two arc blocks 401 are located on the fixed rod 3, the fixed block 301 passes through the arc groove, one end of the ejection block 306 is connected to the friction plate 307, and the friction plate 307 corresponds to the position of the arc block 401, the surface of the fixed block 301 is provided with a thread, and the outer side of the fixed block 301 is threadedly connected to a nut, a return spring 308 is connected between the bottom of the sealing block 303 and the sealing cavity 302, and the top of the air compressor 703 is connected to the exhaust pipe 705, and one end of the exhaust pipe 705 is communicated with the sealing cavity 302, and the connection between the exhaust pipe 705 and the sealing cavity 302 is located above the sealing block 303.

[0033] When the frame is fixed and welded, since the frames have different shapes and welding positions, the usual clamping structure cannot meet the actual fixing requirements. At this time, the tilt angle of the rotating plate 4 can be changed to change the tilt angle of the frame after it is fixed.

[0034] When adjusting the inclination angle of the rotating plate 4, the nut is removed from the fixed block 301 to release the limitation on the arc block 401. Then the rotating plate 4 can be rotated. At this time, the fixed block 301 slides in the arc groove and limits the rotation angle and rotation distance of the rotating plate 4 through the arc groove. After the angle adjustment is completed, the nut is re-threaded onto the fixed block 301, and the nut is pressed on the arc block 401. In this way, the arc block 401 is fixed in the current position, and the adjustment of the position of the rotating plate 4 is completed.

[0035] Furthermore, two adjustment slots 101 are provided inside the box body 1, and an adjustment rod 102 is rotatably connected inside the adjustment slot 101. An adjustment block 103 is provided on the outside of the adjustment rod 102. An electric telescopic rod 104 is installed on the top of the adjustment block 103, and the top of the electric telescopic rod 104 is connected to the fixed rod 3. A thread is provided on the outside of the adjustment rod 102, and an adjustment hole threadedly connected to the adjustment rod 102 is provided inside the adjustment block 103.

[0036] During the welding process, due to the different lengths of the frames, when welding frames of different lengths, the position of the rotating plate 4 needs to be adjusted to meet the clamping and fixing of the frame by the clamping assembly on the rotating plate 4. At this time, the adjusting rod 102 can be rotated so that the adjusting rod 102 drives the adjusting block 103 to move under the action of the adjusting hole, so that the adjusting block 103 drives the electric telescopic rod 104, the fixed rod 3 and the rotating plate 4 to move, thereby changing the position of the rotating plate 4. At the same time, through the setting of the electric telescopic rod 104, the height of the rotating plate 4 and the fixed rod 3 can be changed, so that the clamping assembly on the rotating plate 4 can better adapt to the clamping and fixing of the special-shaped frame, thereby improving the overall applicability.

[0037] Furthermore, a moving component is provided inside the box body 1 for changing the position of the welding head 206, and the moving component includes: two hydraulic rods 2 installed on the top of the box body 1, and the bottom of the hydraulic rods 2 is connected to the lifting plate 201; a moving groove 202 is opened at the bottom of the lifting plate 201, and a driving motor 203 is installed inside the lifting plate 201, and one side of the driving motor 203 is driven and connected to a driving rod 204, and one end of the driving rod 204 is connected to the inner wall of the moving groove 202 through a bearing; a driving block 205 is provided on the outside of the driving rod 204, and the top of the welding head 206 is connected to the driving block 205, the outside of the driving rod 204 is provided with a thread, and the inside of the driving block 205 is provided with a threaded hole matching the driving rod 204.

[0038] During the welding process, the height of the welding head 206 can be changed by setting the hydraulic rod 2, so that the welding head 206 can be close to the frame and perform welding operations. At the same time, the driving motor 203 can be used to drive the driving rod 204 to rotate, so that the driving rod 204 can drive the driving block 205 and the welding head 206 to move through the threaded hole, thereby changing the position of the welding head 206. In conjunction with the movement of the adjustment block 103, the welding requirements at different positions can be met.

[0039] Furthermore, a clamping assembly is provided on the surface of the rotating plate 4, and the clamping assembly includes: a plurality of clamping grooves 5 opened on the surface of the rotating plate 4, and the plurality of clamping grooves 5 are evenly arranged and distributed; a first clamping plate 502 is arranged inside the clamping groove 5, and a plurality of second clamping plates 503 are connected to the top of the rotating plate 4, and the second clamping plates 503 correspond to the positions of the first clamping plates 502; a rubber block 6 connected to the second clamping plate 503 and the first clamping plate 502 on the opposite side, and two rubber plates 508 are rotatably connected to the second clamping plate 503 and the first clamping plate 502 on the opposite side; a rotating hole is opened on one side of the rotating plate 4, a rotating rod 501 is passed through the rotating hole, and one end of the rotating rod 501 is connected to the first clamping plate 502 through a bearing, the inner wall of the rotating hole and the surface of the rotating rod 501 are both provided with threads, the two rubber plates 508 are symmetrically arranged, and the surfaces of the rubber block 6 and the rubber plate 508 are both provided with arcs.

[0040] Before welding, the frame is placed on the rotating plate 4 and located between the first clamping plate 502 and the second clamping plate 503. Then, the rotating rod 501 is rotated so that the rotating rod 501 moves under the action of the screwing of the rotating hole, thereby driving the first clamping plate 502 to move toward the second clamping plate 503, so that the first clamping plate 502 and the second clamping plate 503 clamp and fix the frame; and through the setting of the clamping groove 5, the moving direction of the first clamping plate 502 can be limited. By setting a plurality of first clamping plates 502 and second clamping plates 503, the clamping position of the frame can be increased, and the stability of the clamping and fixing can be improved.

[0041] Furthermore, an extrusion cavity 504 is provided inside the first clamping plate 502 and the second clamping plate 503, an extrusion block is slidably connected inside the extrusion cavity 504, and an extrusion spring 505 is connected between the extrusion block and the extrusion cavity 504, an air pipe 506 communicating with the extrusion cavity 504 is provided inside the first clamping plate 502 and the second clamping plate 503, and a section of the air pipe 506 is arranged in an arc shape, an arc rod 507 is connected to one side of the rubber plate 508, and one end of the arc rod 507 extends into the air pipe 506 and is connected to a piston block, a ventilation pipe 701 is provided between the box body 1 and the vacuum box 7, a filter frame 702 is provided inside the vacuum box 7, an air supply pipe 704 is connected to the top of the air compressor 703, and one end of the air supply pipe 704 is respectively connected to multiple extrusion cavities 504.

[0042] During the welding process, welding metal particles and smoke will be generated. The gas inside the exhaust box 7 is extracted through the air compressor 703. At this time, the air pressure inside the exhaust box 7 drops and suction is generated. The gas inside the box 1 is sucked into the exhaust box 7 through the ventilation pipe 701, so that the metal particles and smoke floating inside the box 1 are all extracted, reducing the pollution of smoke and metal particles to the working environment. At the same time, the metal particles in the gas are isolated and processed by the filter frame 702.

[0043] During the operation of the air compressor 703, the gas in the sealing chamber 302 is also extracted through the exhaust pipe 705. At this time, the air pressure above the sealing block 303 drops, and the sealing block 303 moves upward under the action of the air pressure difference, and then drives the transmission block 305 to move through the storage groove 304. The transmission block 305 drives the ejection block 306 and the friction plate 307 to move outward, so that the friction plate 307 is close to the arc block 401, and cooperates with the nut to form a clamping fixation for the arc block 401, thereby increasing the friction force and fixing area of ​​the arc block 401 and improving the fixation stability. After the air compressor 703 stops working, the sealing block 303 can rebound under the action of the elastic force of the reset spring 308, and the transmission block 305 is received in the storage groove 304, and the ejection block 306 and the friction plate 307 are driven to retreat.

[0044] Next, when the air compressor 703 is in operation, the compressed gas is discharged into its own outlet pipe and air supply pipe 704 respectively, and part of the compressed gas is input into the extrusion chamber 504 through the air supply pipe 704. The extrusion block moves under the action of the air pressure difference, and presses the gas inside the extrusion chamber into the air pipe 506, so that the piston block in the air pipe 506 pushes the arc rod 507 to move outward under the action of the air pressure, and then drives the rubber plate 508 to rotate, so that the arc surface on the rubber plate 508 is close to the frame, increasing the area for clamping and fixing the frame, and can clamp and fix frames of different diameters. After the air compressor 703 stops working, the extrusion block retreats under the action of the elastic force of the extrusion spring 505, and the gas in the air pipe 506 is re-drawn into the extrusion chamber 504. At this time, the piston block pulls the arc rod 507 and the rubber plate 508 back to their original positions under the action of the air pressure.

[0045] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0046] The above is a detailed introduction to an electric vehicle frame welding device and a method of use provided in an embodiment of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present invention. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electric vehicle frame welding device, characterized in that: include: A box body (1), wherein two hydraulic rods (2) are fixedly mounted on the top of the box body (1), and a lifting plate (201) is fixedly connected to the bottom of the hydraulic rod (2), and a moving groove (202) is provided at the bottom of the lifting plate (201), and a driving block (205) is slidably connected inside the moving groove (202), and a welding head (206) is connected to the bottom of the driving block (205), and two adjustment grooves (101) are provided inside the box body (1), and an adjustment block (103) is slidably connected inside the adjustment groove (101), and an electric telescopic rod (104) is fixedly mounted on the top of the adjustment block (103), and the top of the electric telescopic rod (104) is connected to a fixed rod (3), and the top of the fixed rod (3) is rotatably connected to a rotating plate (4), and a clamping component is provided on the surface of the rotating plate (4), and the clamping component comprises: The surface of the rotating plate (4) is provided with a plurality of clamping grooves (5), and the plurality of clamping grooves (5) are evenly arranged and distributed; a first clamping plate (502) is slidably connected inside the clamping groove (5), and a plurality of second clamping plates (503) are fixedly connected to the top of the rotating plate (4); a rubber block (6) is fixedly connected to the opposite side of the second clamping plate (503) and the first clamping plate (502), and two rubber plates (508) are rotatably connected to the opposite side of the second clamping plate (503) and the first clamping plate (502); a rotating hole is provided on one side of the rotating plate (4), a rotating rod (501) is passed through the rotating hole, and one end of the rotating rod (501) is connected to the first clamping plate (502) via a bearing, and the inner wall of the rotating hole and the surface of the rotating rod (501) are both provided with threads; an extrusion cavity (504) is provided inside the first clamping plate (502) and the second clamping plate (503); An air extraction box (7) is installed on opposite sides of the box body (1), an air compressor (703) is installed inside the air extraction box (7), an air supply pipe (704) is fixedly connected to the top of the air compressor (703), and one end of the air supply pipe (704) is respectively connected to the plurality of extrusion chambers (504); An adjustment component disposed between the rotating plate (4) and the fixed rod (3), and used for changing the inclination angle of the rotating plate (4); The adjustment assembly comprises: two arc-shaped blocks (401) are connected to the bottom of the rotating plate (4); the fixing rod (3) is connected to fixing blocks (301) on opposite sides; a sealing cavity (302) is provided inside the fixing rod (3); a sealing block (303) is slidably connected inside the sealing cavity (302); two receiving grooves (304) are provided on opposite sides of the sealing block (303); a transmission block (305) is rotatably connected inside the receiving groove (304); and one end of the transmission block (305) is rotatably connected to an ejection block (306).

2. The electric vehicle frame welding device according to claim 1, characterized in that: An arc-shaped groove is formed on the surface of the arc-shaped block (401), and two arc-shaped blocks (401) are located on both sides of the fixing rod (3), the fixing block (301) passes through the arc-shaped groove, one end of the ejection block (306) is connected to a friction plate (307), and the position of the friction plate (307) corresponds to that of the arc-shaped block (401), a thread is formed on the surface of the fixing block (301), and a nut is threadedly connected to the outer side of the fixing block (301).

3. The electric vehicle frame welding device according to claim 1, characterized in that: A return spring (308) is fixedly connected between the bottom of the sealing block (303) and the sealing cavity (302), and an exhaust pipe (705) is fixedly connected to the top of the air compressor (703), and one end of the exhaust pipe (705) is in communication with the sealing cavity (302), and the connection between the exhaust pipe (705) and the sealing cavity (302) is located above the sealing block (303).

4. The electric vehicle frame welding device according to claim 1, characterized in that: An adjusting rod (102) is rotatably connected inside the adjusting groove (101), a thread is provided on the outside of the adjusting rod (102), and an adjusting hole threadably connected to the adjusting rod (102) is provided inside the adjusting block (103).

5. The electric vehicle frame welding device according to claim 1, characterized in that: A moving component is provided inside the box (1) for changing the position of the welding head (206), and the moving component comprises: A driving motor (203) is fixedly installed inside the lifting plate (201), one side of the driving motor (203) is drivingly connected to a driving rod (204), and one end of the driving rod (204) is connected to the inner wall of the moving groove (202) via a bearing; The driving rod (204) is provided with a thread on the outside, and the driving block (205) is provided with a threaded hole inside that matches the driving rod (204).

6. The electric vehicle frame welding device according to claim 1, characterized in that: The second clamping plate (503) corresponds in position to the first clamping plate (502).

7. The electric vehicle frame welding device according to claim 1, characterized in that: The two rubber plates (508) are symmetrically arranged, and the surfaces of the rubber block (6) and the rubber plate (508) are both provided with curvatures.

8. The electric vehicle frame welding device according to claim 1, characterized in that: An extrusion block is slidably connected to the extrusion chamber (504), and an extrusion spring (505) is fixedly connected between the extrusion block and the extrusion chamber (504). An air pipe (506) communicating with the extrusion chamber (504) is provided inside the first clamping plate (502) and the second clamping plate (503), and a section of the air pipe (506) is arranged in an arc shape. An arc rod (507) is fixedly connected to one side of the rubber plate (508), and one end of the arc rod (507) extends into the air pipe (506) and is connected to a piston block.

9. The electric vehicle frame welding device according to claim 1, characterized in that: A ventilation pipe (701) is provided between the box body (1) and the air extraction box (7), and a filter frame (702) is provided inside the air extraction box (7).

10. The method for using the electric vehicle frame welding device according to claim 1, characterized in that: The steps include: S1, fixing the vehicle frame, placing the vehicle frame on the rotating plate (4), rotating the rotating rod (501), so that the rotating rod (501) drives the first clamping plate (502) to move in the direction of the second clamping plate (503), and clamping and fixing the vehicle frame on the rotating plate (4); S2, then by loosening the nut on the fixing block (301), the restriction between the arc plate (401) and the fixing block (301) is released, so that the inclination angle of the rotating plate (4) can be adjusted according to the arc of the frame. After the adjustment is completed, the nut is re-threaded onto the fixing block (301) to fix the arc plate (401) in the current position; S3, then the adjusting rod (102) is rotated according to the length of the frame, so that the adjusting rod (102) drives the adjusting block (103) to move under the action of the screw thread, thereby driving the electric telescopic rod (104), the fixed rod (3) and the rotating plate (4) to move, thereby adjusting the relative positions of the frames on the two rotating plates (4) so ​​that the welding parts of the two frames are in contact; S4, then changing the height of the rotating plate (4) by extending and retracting the electric telescopic rod (104), so that the welding positions of the vehicle frames on the two rotating plates (4) are aligned, which facilitates subsequent welding; S5, welding is then performed on the contact points of the two vehicle frames by means of a welding head (206) or manual welding. During the welding process, the air inside the exhaust box (7) is extracted by means of an air compressor (703), so that suction is generated inside the exhaust box (7) to remove floating metal particles and smoke generated by welding inside the box body (1); S6, when the air compressor (703) is working, the gas in the sealing chamber (302) is extracted through the exhaust pipe (705), so that the air pressure in the space above the sealing block (303) decreases. Under the action of the air pressure difference, the sealing block (303) is driven to move upward, and then the sealing block (303) pushes out the friction plate (307) through the transmission block (305) and the ejection block (306), and closely adheres to the arc block (401), thereby increasing the fixing stability of the arc block (401); S7. When the air compressor (703) is working, part of the drawn gas is delivered to the extrusion chamber (504) through the gas delivery pipe (704), so that the gas pressure on both sides of the extrusion block changes, and the extrusion block moves under the action of the gas pressure difference, and the gas in the extrusion chamber (504) is pressed into the gas pipe (506), so that the piston block drives the arc rod 507 to move out under the action of the gas pressure, so that the arc rod (507) drives the rubber plate (508) to be close to the surface of the frame, thereby increasing the fixing area of ​​the frame.

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