Electric vehicle frame welding device and use method

Abstract

The present invention provides an electric vehicle frame welding device and a method for using the device, which relates to the field of frame welding technology. The device comprises: a box body, two hydraulic rods fixedly installed on the top of the box body, a lifting plate fixedly connected to the bottom of the hydraulic rod, a movable groove provided at the bottom of the lifting plate, a driving block slidably connected inside the movable groove, a welding head connected to the bottom of the driving block, two fixed rods provided inside the box body, a rotating plate rotatably connected to the top of the fixed rod; an adjustment component provided between the rotating plate and the fixed rod, for changing the inclination angle of the rotating plate. By setting the adjustment component, the device can change the inclination angle of the rotating plate to adapt to frames of different shapes, and can also change the position and height of the rotating plate according to the welding position; by setting the clamping component, the device can clamp and fix frames of different diameters, while increasing the contact area when clamping the frame, thereby improving the stability of the clamping.

Description

Technical Field

[0001] The present 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 a load-bearing system, energy system, drive system, braking system and driving system, 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, rider 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 objectives, the present invention provides the following technical solutions: an electric vehicle frame welding device, comprising:

[0006] 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, the top ends of the fixing rods are rotatably connected to a rotating plate, and vacuum boxes are installed on opposite sides of the box body, and an air compressor is installed inside the vacuum box;

[0007] An adjusting assembly provided between the rotating plate and the fixing rod, for changing the tilt angle of the rotating plate;

[0008] The adjustment component includes:

[0009] Two arc-shaped blocks connected to the bottom of the rotating plate;

[0010] fixing blocks connected to opposite sides of the fixing rod;

[0011] 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.

[0012] 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 the outer side of the fixing block is threaded with a nut.

[0013] 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, and 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.

[0014] 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 that is threadedly connected to the adjustment rod.

[0015] Furthermore, a moving assembly is provided inside the box for changing the position of the welding head, and the moving assembly includes:

[0016] Two hydraulic rods are installed on the top of the box, and the bottoms of the hydraulic rods are connected to the lifting plate;

[0017] A movable 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 connected to a driving rod, and one end of the driving rod is connected to the inner wall of the movable groove through a bearing;

[0018] A driving block is arranged on the outside of the driving rod, and the top of the welding head is connected to the driving block. The outside of the driving rod is provided with a thread, and the inside of the driving block is provided with a threaded hole that matches the driving rod.

[0019] Furthermore, a clamping assembly is provided on the surface of the rotating plate, and the clamping assembly includes:

[0020] 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;

[0021] A first clamping plate is provided inside the clamping groove, and a plurality of second clamping plates are connected to the top of the rotating plate, and the positions of the second clamping plates correspond to those of the first clamping plates;

[0022] A rubber block connected to the second clamping plate and the opposite side of the first clamping plate, wherein the second clamping plate and the opposite side of the first clamping plate are both rotatably connected to two rubber plates;

[0023] 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 the inner wall of the rotating hole and the surface of the rotating rod are both provided with threads.

[0024] Furthermore, the two rubber plates are symmetrically arranged, and the surfaces of the rubber blocks and the rubber plates are both provided with curvatures.

[0025] Furthermore, an extrusion cavity is provided inside the first clamping plate and the second clamping plate, an extrusion block is slidably connected to the inside of the extrusion cavity, and an extrusion spring is connected between the extrusion block and the extrusion cavity, and 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.

[0026] 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.

[0027] Furthermore, a method for using an electric vehicle frame welding device includes the following steps:

[0028] S1. Fix the vehicle frame and place it on the rotating plate. Rotate the rotating rod so that the rotating rod drives the first clamping plate to move toward the second clamping plate, and clamp the vehicle frame on the rotating plate.

[0029] S2. Then, by loosening the nut on the fixing block, the restriction between the curved plate and the fixing block is released, and the tilt angle of the rotating plate can be adjusted according to the arc shape of the frame. After the adjustment is completed, the nut is re-threaded onto the fixing block to fix the curved plate in the current position;

[0030] S3. Then, the adjusting rod is rotated according to the length of the vehicle frame, 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, thereby adjusting the relative position of the two vehicle frames on the rotating plates so that the welded parts of the two vehicle frames are in contact;

[0031] S4. Then, the height of the rotating plate is changed by extending and retracting the electric telescopic rod so that the welding positions of the vehicle frames on the two rotating plates are aligned, which facilitates subsequent welding.

[0032] S5. Then, the contact points of the two frames are welded using a welding head or manual welding. During the welding process, an air compressor is used to extract the gas inside the exhaust box, so that suction is generated inside the exhaust box to remove floating metal particles and smoke generated by welding inside the box;

[0033] S6. When the air compressor is working, the air in the sealing cavity is extracted through the exhaust pipe, causing the air pressure in the space above the sealing block to drop. Under the action of the air pressure difference, the sealing block is driven to move upward. Then, the sealing block pushes the friction plate out through the transmission block and the ejection block, and clings to the arc block, thereby increasing the fixing stability of the arc block.

[0034] S7. When the air compressor is working, part of the drawn-in gas is delivered to the extrusion chamber through the air pipe, causing the air pressure on both sides of the extrusion block to change. The extrusion block moves under the action of the air pressure difference, pressing the gas in the extrusion chamber 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 stick to the surface of the frame, thereby increasing the fixing area of ​​the frame.

[0035] The present invention provides an electric vehicle frame welding device and a method for using the same, which have the following beneficial effects:

[0036] The advantages of the present invention are that the inclination angle of the rotating plate can be changed by adjusting the setting of the assembly, which makes it easier for workers to clamp and fix the frame with the arc structure, facilitates subsequent welding, and adapts 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, thereby improving the overall applicability.

[0037] Secondly, the clamping assembly can clamp and fix frames of different diameters without replacing the corresponding clamps. At the same time, it can increase the contact area and friction force when clamping the frame, thereby improving the clamping stability of the frame.

[0038] Then, through the setting of the vacuum box and air compressor, the fume and floating metal particles generated by 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 to be extracted, thereby driving the sealing block, transmission block and ejection block to move, so that the friction plate cooperates with the nut to clamp and fix the arc block, ensuring the stability of the tilt angle of the rotating plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention.

[0040] Figure 2 It is a cross-sectional view of the overall structure of an embodiment of the present invention.

[0041] Figure 3 Schematic diagram of the rotating plate structure according to an embodiment of the present invention.

[0042] Figure 4 Schematic diagram of the first clamping plate structure according to an embodiment of the present invention.

[0043] Figure 5 This is a cross-sectional view of the fixing rod structure according to an embodiment of the present invention.

[0044] Figure 6 Schematic diagram of the clamping groove structure according to an embodiment of the present invention.

[0045] Figure 7 Schematic diagram of the sealing block structure according to an embodiment of the present invention.

[0046] Figure 8 For the embodiment of the present invention Figure 2 A in the enlarged view.

[0047] Figure 9 For the embodiment of the present invention Figure 6 Enlarged view of point B in .

[0048] Figures 1-9 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. Drive motor; 204. Drive rod; 205. Drive 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

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the embodiments of the present invention.

[0050] The disclosure below provides many different embodiments or examples for realizing different structures of embodiments of the present invention. In order to simplify the disclosure of embodiments of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the embodiments of the present invention provide examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0051] The present invention aims to solve the shortcomings of the background technology and provide 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 with the frame is increased, thereby improving the stability of the clamping.

[0052] The embodiment of the present invention provides an electric vehicle frame welding device and a method for use thereof, which are described in detail below. It should be noted that the order of description of the following embodiments does not limit the preferred order of the embodiments.

[0053] The embodiments of the present invention are described in detail below with reference to the accompanying drawings and specific implementation methods.

[0054] See also Figures 1-9 In this 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, the top of the fixed rod 3 is rotatably connected to a rotating plate 4, 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 adjustment component is arranged between the rotating plate 4 and the fixed rod 3, for changing the inclination angle of the rotating plate 4.

[0055] 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, facilitates subsequent welding, and adapts 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, thereby improving the overall applicability; secondly, by setting the clamping component, 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 with the frame can be increased, thereby improving the clamping stability of the frame; then, through the setting of the vacuum box 7 and the air compressor 703, the fume and floating metal particles generated by welding can be extracted and filtered, and the gas is pressed into the extrusion chamber 504 to drive the rubber plate 508 in the clamping component to rotate, and the gas in the sealing chamber 302 is 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.

[0056] 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 receiving groove 304, and 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.

[0057] When the frame is fixed and welded, the usual clamping structure cannot meet the actual fixing requirements due to the different shapes of the frames and the different welding locations. In this case, the tilt angle of the rotating plate 4 can be changed to change the tilt angle of the frame after it is fixed.

[0058] When adjusting the inclination angle of the rotating plate 4, the nut is removed from the fixed block 301, releasing the restriction on the arc block 401, and 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 screwed onto the fixed block 301 again, and the nut is pressed on the arc block 401, so that the arc block 401 is fixed in the current position, completing the adjustment of the position of the rotating plate 4.

[0059] 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 is provided inside the adjustment block 103 that is threadedly connected to the adjustment rod 102.

[0060] During the welding process, since the lengths of the frames are different, when welding frames of different lengths, the position of the rotating plate 4 needs to be adjusted to meet the needs of the clamping assembly on the rotating plate 4 for clamping and fixing the frame. 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.

[0061] 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 rod 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 the 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 that matches the driving rod 204.

[0062] 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 drives 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, it can meet the welding requirements of different positions.

[0063] 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 provided 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 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 provided with radians.

[0064] Before welding, the vehicle 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 screw thread 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 vehicle frame; and through the setting of the clamping groove 5, the moving direction of the first clamping plate 502 can be limited. By setting multiple first clamping plates 502 and second clamping plates 503, the clamping position of the vehicle frame can be increased, and the stability of the clamping and fixation can be improved.

[0065] Furthermore, an extrusion chamber 504 is provided inside the first clamping plate 502 and the second clamping plate 503, and an extrusion block is slidably connected inside the extrusion chamber 504, and an extrusion spring 505 is 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 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, and 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 chambers 504.

[0066] During the welding process, welding metal particles and smoke will be generated. The gas inside the exhaust box 7 is extracted by the air compressor 703. At this time, the air pressure inside the exhaust box 7 drops and suction is generated, which sucks the gas inside the box 1 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.

[0067] 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 receiving groove 304. The transmission block 305 drives the ejection block 306 and the friction plate 307 to move outward, allowing the friction plate 307 to be close to the arc block 401, and cooperates with the nut to form a clamping fixation for the arc block 401, increasing the friction force and fixing area of ​​the arc block 401, and improving the stability of the fixation. 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 receiving groove 304, and the ejection block 306 and the friction plate 307 are driven to retreat.

[0068] Next, when the air compressor 703 is operating, it discharges the compressed gas into its own outlet pipe and air supply pipe 704, respectively. Some of the compressed gas is then fed into the extrusion chamber 504 through the air supply pipe 704. The extrusion block moves under the influence of the air pressure difference, forcing the gas inside the extrusion chamber into the air pipe 506. This causes the piston block inside the air pipe 506 to push the curved rod 507 outward under the influence of the air pressure, which in turn drives the rubber plate 508 to rotate, causing the curved surface of the rubber plate 508 to adhere closely to the frame, increasing the area for clamping the frame and enabling it to clamp frames of different diameters. When the air compressor 703 stops operating, the extrusion block retreats under the influence of the extrusion spring 505, drawing the gas in the air pipe 506 back into the extrusion chamber 504. At this point, the piston block, under the influence of the air pressure, pulls the curved rod 507 and rubber plate 508 back into their original positions.

[0069] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0070] The above is a detailed introduction to an electric vehicle frame welding device and a method of use provided by an embodiment of the present invention. Specific examples are used herein 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 solutions and core ideas 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 cause the essence of the corresponding technical solutions to 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) is provided with two hydraulic rods (2) fixedly mounted on the top of the box body (1), a lifting plate (201) is fixedly connected to the bottom of the hydraulic rod (2), a movable groove (202) is provided at the bottom of the lifting plate (201), a driving block (205) is slidably connected inside the movable groove (202), a welding head (206) is connected to the bottom of the driving block (205), two adjustment grooves (101) are provided inside the box body (1), an adjustment block (103) is slidably connected inside the adjustment groove (101), an electric telescopic rod (104) is fixedly mounted on the top of the adjustment block (103), the top of the electric telescopic rod (104) is connected to a fixed rod (3), the top of the fixed rod (3) is rotatably connected to a rotating plate (4), a clamping assembly is provided on the surface of the rotating plate (4), and the clamping assembly 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 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) through 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); Air pumping boxes (7) are installed on opposite sides of the box body (1), an air compressor (703) is installed inside the air pumping 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 tilt angle of the rotating plate (4); The adjustment assembly comprises: two arc-shaped blocks (401) connected to the bottom of the rotating plate (4); fixed blocks (301) are connected to opposite sides of the fixed rod (3); a sealed cavity (302) is provided inside the fixed rod (3); a sealing block (303) is slidably connected inside the sealed 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 groove is provided on the surface of the arc block (401), and two arc blocks (401) are located on both sides of the fixing rod (3). The fixing block (301) passes through the arc groove. One end of the ejection block (306) is connected to a friction plate (307), and the friction plate (307) corresponds to the position of the arc block (401). A thread is provided 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 is provided inside the adjusting block (103) and is threadedly connected to the adjusting rod (102).

5. The electric vehicle frame welding device according to claim 1, characterized in that: A moving assembly is provided inside the box (1) for changing the position of the welding head (206), and the moving assembly 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) through 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 radians.

8. The electric vehicle frame welding device according to claim 1, characterized in that: An extrusion block is slidably connected to the interior of 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 fixed block (301), the limitation between the arc block (401) and the fixed block (301) is released, and 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 fixed block (301) to fix the arc block (401) in the current position; S3, then rotating the adjusting rod (102) according to the length of the vehicle 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 position of the vehicle frames on the two rotating plates (4) so ​​that the welded parts of the two vehicle 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, facilitating subsequent welding; S5. Then, the contact points of the two vehicle frames are welded by means of a welding head (206) or manual welding. During the welding process, the air inside the exhaust box (7) is extracted by 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 the friction plate (307) out through the transmission block (305) and the ejection block (306), and is close 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-in gas is delivered to the extrusion chamber (504) through the gas pipe (704), 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 (504) is pressed into the air pipe (506), 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 (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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