Automobile water tank upper cross beam welding equipment

Abstract

The invention discloses automobile water tank upper cross beam welding equipment, relates to the field of water tank upper cross beam assembly, solves the problem that an existing device is difficult to carry out efficient carbon dioxide stable welding on an upper cross beam frame plate and the front end of an automobile frame according to requirements, and adopts the following scheme that the automobile water tank upper cross beam welding equipment comprises a support assembly, a welding assembly and a positioning assembly, an upper cross beam frame plate is placed on the positioning assembly, the positioning assembly is used for blowing air to the contact face of the upper cross beam frame plate and a vehicle frame, and the welding assembly is used for conducting reciprocating carbon dioxide welding on the contact portion of the upper cross beam frame plate on the bottom side and the vehicle frame. According to the welding equipment for the upper cross beam of the water tank for the vehicle, through the arrangement of the welding assembly on the support assembly, welding rods can be driven to be fed step by step through reciprocating driving conducted by the welding assembly, and meanwhile periodic driving of 6 mm-3 mm transverse movement conducted on an upper cross beam frame plate can be achieved through the reciprocating driving mode; therefore, the connecting part of the upper cross beam frame plate and the frame can be accurately welded.

Description

Technical Field

[0001] The present invention relates to the technical field of the assembly of the upper crossbeam of a water tank, and specifically relates to a welding device for the upper crossbeam of a vehicle water tank. Background Technique

[0002] In the modern automotive industry system, the performance of the engine cooling system directly determines the power stability and service life of the whole vehicle. As the core heat exchange component of this system, the installation accuracy and structural stability of the water tank are crucial. The current water tank installation process generally adopts a step-by-step welding and assembly scheme: first, the upper crossbeam is welded and fixed at the preset position on the vehicle frame, and then the water tank is rigidly connected to the upper crossbeam through secondary welding. Although this step-by-step assembly mode can ensure the overall structural strength of the water tank seat, problems such as a long process chain and the accumulation of welding stress pose higher requirements for welding accuracy. In the welding link between the upper crossbeam and the vehicle frame, the fusion welding process based on gas metal arc welding (GMAW) has become the mainstream choice due to its high-efficiency deposition and low-cost advantages. During the implementation of this process, three core steps need to be completed in sequence: the cleaning and pretreatment of the welding surface, the precise fitting and calibration of the front surfaces of the upper crossbeam and the vehicle frame, and dynamic welding. The traditional operation mode adopts a reciprocating welding strategy with a manual welding torch - with a periodic movement trajectory of "translating 6 mm - resetting 3 mm", and the weld seam is strengthened through double cladding. However, this pure manual operation mode has significant technical bottlenecks: on the one hand, limited by the differences in the operation proficiency of welders, it is difficult to ensure the consistency of welding parameters, resulting in a high dispersion in the forming quality of the weld seam; on the other hand, the high-frequency reciprocating movement of holding the welding torch for a long time is prone to cause artificial jitter, resulting in the deviation of the welding position, and the operation efficiency can only reach 30% - 40% of mechanical welding. In addition, during the continuous welding process lasting several minutes, without effective tooling positioning assistance, the relative positions of the upper crossbeam and the vehicle frame are extremely prone to small displacements, thereby affecting the installation reference accuracy of the water tank and forming systematic assembly errors. With the transformation of the automotive industry towards intelligent and high-precision manufacturing, there is an urgent need to develop a new welding technology solution with both automation and high precision to break through the efficiency and quality bottlenecks of the existing process.

[0003] Therefore, we propose a welding device for the upper crossbeam of a vehicle water tank. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a welding device for the upper crossbeam of a vehicle water tank, which solves the problem that the existing device is difficult to perform efficient and stable carbon dioxide welding on the upper crossbeam plate and the front end of the vehicle frame according to requirements.

[0005] To achieve the above object, the present invention is realized through the following technical solutions: A welding device for the upper cross beam of a vehicle water tank, including a bracket assembly, a welding assembly and a positioning assembly assembled thereon. An upper cross beam frame plate is placed on the positioning assembly. The positioning assembly clamps the upper cross beam frame plate on the front side of the vehicle frame. The positioning assembly is used to blow and clean the contact surface between the upper cross beam frame plate and the vehicle frame. The welding assembly holds and transports welding rods, and the welding assembly is used to perform reciprocating carbon dioxide welding on the contact part between the bottom upper cross beam frame plate and the vehicle frame.

[0006] As a preferred solution of the welding device for the upper cross beam of the vehicle water tank of the present invention, the bracket assembly includes a rear bracket and a front bracket on its front side. Self-locking universal wheels are fixedly installed at the rear end corners of the bottom of the rear bracket and the front end corners of the bottom of the front bracket. A vertical bracket is provided in the middle of the rear bracket and the front bracket, and a welding assembly is assembled on the vertical bracket.

[0007] As a preferred solution of the welding device for the upper cross beam of the vehicle water tank of the present invention, the vertical bracket includes a support plate and three groups of sliding grooves opened thereon. An air slide seat and a moving slide seat arranged in the sliding grooves are slidably sleeved on the support plate. The outer ends of the air slide seat and the moving slide seat are connected with support rods. An electric cylinder assembly is assembled on the outside of the support plate, and the output end of the electric cylinder assembly is connected to the end of the support rod.

[0008] As a preferred solution of the welding device for the upper cross beam of the vehicle water tank of the present invention, the welding assembly includes a liquid spray head and an air hood seat arranged on the top side of the welding part of the upper cross beam frame plate. A liquid pump bottle and a fan pump seat are installed on the top of the rear bracket, and the outer ends of the liquid pump bottle and the fan pump seat are respectively communicated with the air hood seat and the liquid spray head located in front of the air slide seat.

[0009] As a preferred solution of the welding device for the upper cross beam of the vehicle water tank of the present invention, the welding assembly includes two groups of pressure plates arranged on the front side of the moving slide seat and a carbon dioxide gas cylinder. A carbon dioxide gas cylinder is arranged on the top of the bracket assembly. The carbon dioxide gas cylinder is communicated with the pressure plates. An electric control box seat is installed on the top of the bracket assembly. An arc heating ring electrically connected to the electric control box seat is arranged at the bottom end of the carbon dioxide gas cylinder.

[0010] As a preferred solution of the welding device for the upper cross beam of the vehicle water tank of the present invention, a welding groove recessed inward is opened on the outer peripheral wall of the pressure plate. The two groups of pressure plates are obliquely assembled. The two groups of pressure plates feed the welding rods clamped between them. A toothed disc is arranged inside the pressure plate, and a rack meshing with the two groups of toothed discs is installed on the front side of the support plate.

[0011] As a preferred embodiment of the welding device for the upper crossbeam of a vehicle water tank according to the present invention, the front support is a rectangular frame, and the positioning assembly includes a cylinder assembly installed on the side ribs of the front support. The top end of the output shaft of the cylinder assembly is connected with an upper shaft seat, and an air cylinder column is arranged on the upper shaft seat. The output end of the air cylinder column is communicated with a micro air pump installed on the front support, and the output end of the micro air pump is communicated with the input end of the cylinder assembly.

[0012] As a preferred embodiment of the welding device for the upper crossbeam of a vehicle water tank according to the present invention, the welding assembly includes a lower shaft rod installed inside the front support. A left clamp and a right clamp are hinged between the end of the lower shaft rod and the end of the upper shaft seat. The top end of the left clamp is bifurcated, and the upper crossbeam frame plate is placed at the bifurcated part at the top end of the left clamp.

[0013] As a preferred embodiment of the welding device for the upper crossbeam of a vehicle water tank according to the present invention, a piston disc is plugged inside the air cylinder column. The outer end of the piston disc is fixedly connected with a guide frame in the shape of a side U. The top of the guide frame is connected with an air spray head. The air spray head is a Y-shaped pipe. An air pump bottle is installed on the top of the rear support, and the output end of the air pump bottle is communicated with the input end of the air spray head.

[0014] As a preferred embodiment of the welding device for the upper crossbeam of a vehicle water tank according to the present invention, both the right clamp and the left clamp are composed of three-section rod frames hinged together. The bottom ends of the right clamp and the left clamp are provided with bushings sleeved on the lower shaft rod, and the contact part between the right clamp and the left clamp is also provided with a bushing sleeved on the end of the upper shaft seat.

[0015] The present invention provides a welding device for the upper crossbeam of a vehicle water tank, which has the following beneficial effects: 1. For the welding device for the upper crossbeam of a vehicle water tank, through the setting of the welding assembly on the support assembly, the reciprocating drive carried out by the welding assembly can drive the welding wire to gradually feed. At the same time, the reciprocating drive method can realize the periodic drive of "translating 6 mm - resetting 3 mm" for the upper crossbeam frame plate. At the same time, the setting of the welding assembly structure can also spray carbon dioxide gas on its periphery during welding and form a carbon dioxide cover to avoid oxidation, so as to accurately weld the connection part between the upper crossbeam frame plate and the vehicle frame, solving the problem that the existing device is difficult to perform efficient and stable carbon dioxide welding on the upper crossbeam frame plate and the front end of the vehicle frame according to requirements; 2. The welding equipment for the upper crossbeam of the vehicle water tank, through the setting of the positioning component, can drive the upper crossbeam frame plate to closely adhere to the front end of the vehicle frame during pre-positioning, and stably clamp and limit the upper crossbeam frame plate and the end of the vehicle frame from the front and rear sides, ensuring efficient press-fitting and limiting at the contact point, thereby avoiding the situation that the existing handheld upper crossbeam frame plate is prone to displacement during long-term press-fitting and clamping, which affects the welding effect, and solving the problems that the existing device is difficult to stably clamp and limit the upper crossbeam frame plate according to requirements, the operation is cumbersome, and the clamping efficiency is low; 3. The welding equipment for the upper crossbeam of the vehicle water tank, through the setting of each component in the welding assembly and the positioning component, can perform jet dust removal on the contact point between the upper crossbeam frame plate and the welding rod during positioning by using the positioning component. At the same time, each component on the welding assembly can first suck dust from the welding area before welding, and then spray a dense liquid flow to perform secondary cleaning on the welding area after dust suction to ensure the pre-treatment of the welding area and further ensure the welding effect; 4. The welding equipment for the upper crossbeam of the vehicle water tank, through the setting of the bracket component structure, can perform integrated assembly on each component of the welding assembly and the positioning component, ensuring the integrity of the device. At the same time, the setting of the bottom component of the bracket component can ensure the flexibility of the entire device, facilitating its flexible movement to drive the upper crossbeam frame plate to press-fit it at the end of the vehicle frame, ensuring flexibility and positioning press-fitting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic side view structural diagram of the present invention; Figure 3 is a schematic structural diagram of the positioning component of the present invention; Figure 4 is a schematic structural diagram of the guide frame of the present invention; Figure 5 is a schematic structural diagram of the vertical bracket of the present invention; Figure 6 is a schematic structural diagram of the rear bracket of the present invention; Figure 7 is a schematic structural diagram of the welding assembly of the present invention; Figure 8 is a schematic rear view structural diagram of the welding assembly of the present invention; Figure 9 of the present invention Figure 8 is an enlarged schematic structural diagram of part A in the present invention.

[0017] In the figure: 1. Bracket assembly; 11. Rear bracket; 12. Front bracket; 13. Vertical bracket; 131. Support plate; 132. Slide groove; 133. Electric cylinder assembly; 134. Air slide seat; 135. Moving slide seat; 136. Support rod; 137. Rack; 14. Self-locking universal wheel; 15. Electric control box seat; 16. Air pump bottle; 17. Liquid pump bottle; 18. Fan pump seat; 19. Carbon dioxide gas cylinder; 2. Welding assembly; 21. Carbon dioxide cylinder; 22. Liquid spray head; 23. Air hood seat; 24. Arc heating ring; 25. Pressure plate; 26. Welding groove; 27. Tooth disc; 3. Positioning assembly; 31. Cylinder assembly; 32. Micro air pump; 33. Cylinder column; 331. Piston disc; 34. Lower shaft rod; 35. Upper shaft seat; 36. Left clamp; 37. Right clamp; 38. Air spray head; 39. Guide frame; 4. Upper crossbeam frame plate; 5. Welding rod. Detailed implementation manner

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-9 , the embodiments of the present invention provide a technical solution: a welding device for the upper crossbeam of a vehicle water tank, including a bracket assembly 1, a welding assembly 2 and a positioning assembly 3 assembled thereon. An upper crossbeam frame plate 4 is placed on the positioning assembly 3. The positioning assembly 3 clamps the upper crossbeam frame plate 4 on the front side of the vehicle frame. The positioning assembly 3 is used to blow and clean the contact surface between the upper crossbeam frame plate 4 and the vehicle frame. The welding assembly 2 holds and transports a welding rod 5, and the welding assembly 2 is used for reciprocating carbon dioxide welding of the contact part between the bottom upper crossbeam frame plate 4 and the vehicle frame; Among them, in this welding device for the upper crossbeam of a vehicle water tank, through the setting of the welding assembly 2 on the bracket assembly 1, the reciprocating drive performed by the welding assembly 2 can drive the welding rod 5 to gradually feed wire. At the same time, the reciprocating drive method can achieve the periodic drive of "translating 6 mm - resetting 3 mm" for the upper crossbeam frame plate 4. At the same time, the setting of the structure of the welding assembly 2 can also spray carbon dioxide gas on its periphery during welding and form a layer of carbon dioxide cover to avoid oxidation, so as to accurately weld the connection part between the upper crossbeam frame plate 4 and the vehicle frame, and solve the problem that the existing device is difficult to perform efficient and stable carbon dioxide welding on the upper crossbeam frame plate 4 and the front end of the vehicle frame according to requirements; The welding equipment for the upper crossbeam of the vehicle water tank, through the setting of the positioning component 3, can drive the upper crossbeam frame plate 4 to closely adhere to the front end of the vehicle frame during pre-positioning, and stably clamp and limit the upper crossbeam frame plate 4 and the end of the vehicle frame from the front and back sides, ensuring efficient pressing and limiting at the contact part, so as to avoid the situation that the existing handheld upper crossbeam frame plate 4 is prone to displacement during long-term pressing and clamping, which affects the welding effect, and solves the problems that the existing device is difficult to stably clamp and limit the upper crossbeam frame plate 4 according to requirements, the operation is cumbersome, and the clamping efficiency is low; The welding equipment for the upper crossbeam of the vehicle water tank, through the setting of each component in the welding assembly 2 and the positioning component 3, can perform jet dust removal on the contact part of the upper crossbeam frame plate 4 and the welding rod 5 by using the positioning component 3 during positioning. At the same time, each component on the welding assembly 2 can suck dust from the welding part first before welding, and then use the dense liquid flow it sprays to perform secondary cleaning on the welding part after dust suction to ensure the pretreatment of the welding part and further ensure the welding effect; The welding equipment for the upper crossbeam of the vehicle water tank, through the setting of the structure of the support component 1, can perform integrated assembly on each component of the welding assembly 2 and the positioning component 3, ensuring the integrity of the device. At the same time, the setting of the bottom component of the support component 1 can ensure the flexibility of the entire device, facilitating its flexible movement, so as to drive the upper crossbeam frame plate 4 to press it on the end of the vehicle frame, ensuring flexibility and positioning and pressing effect.

[0020] Embodiment 2: In order to achieve stable limit for the welding assembly 2 and the positioning component 3 while ensuring the flexibility of the device, please refer to Figures 1-3 , the support component 1 includes a rear support 11 and a front support 12 on its front side. Self-locking universal wheels 14 are fixedly installed at the rear corner of the bottom of the rear support 11 and the front corner of the bottom of the front support 12. A vertical support 13 is arranged in the middle of the rear support 11 and the front support 12, and the welding assembly 2 is assembled on the vertical support 13; Among them, the setting of the self-locking universal wheels 14 at the bottom of the rear support 11 and the front support 12 can provide a driving method for the device, ensure the flexibility of the device by using the self-locking universal wheels 14, push the device to the corresponding position according to the different positions of the vehicle frame, and use the self-locking property of the self-locking universal wheels 14 to pre-position the device in advance to ensure the pressing effect. The setting of the vertical support 13 can provide support for the welding assembly 2 to ensure the integrated assembly effect of the device.

[0021] The vertical support 13 includes a support plate 131 and three groups of chutes 132 opened thereon. An air slide seat 134 and a moving slide seat 135 arranged in the chutes 132 are slidably sleeved on the support plate 131. The outer ends of the air slide seat 134 and the moving slide seat 135 are connected with a support rod 136. An electric cylinder assembly 133 is assembled on the outside of the support plate 131, and the output end of the electric cylinder assembly 133 is connected to the end of the support rod 136; Among them, the setting of the support plate 131 facilitates the installation of the electric cylinder assembly 133. The electric cylinder assembly 133 is used to drive the air slide seat 134 and the moving slide seat 135 on the support rod 136 to reciprocate horizontally, so as to assist the subsequent components to perform efficient and stable welding on the upper cross beam frame plate 4 at the bottom side.

[0022] Embodiment 3: In order to achieve stable carbon dioxide welding of the contact part between the upper cross beam frame plate 4 and the vehicle frame and pre-cleaning before welding, please refer to Figures 5-9 , the welding assembly 2 includes a liquid spray head 22 and an air hood seat 23 arranged at the top side of the welding part of the upper cross beam frame plate 4 at the bottom end. A liquid pump bottle 17 and a fan pump seat 18 are installed at the top of the rear support 11, and the outer ends of the liquid pump bottle 17 and the fan pump seat 18 are respectively connected to the air hood seat 23 and the liquid spray head 22 located in front of the air slide seat 134; Among them, the setting of the fan pump seat 18 can extract the dust between the contact part of the upper cross beam frame plate 4 at the bottom side and the front end of the vehicle frame through the air hood seat 23, and then extrude the liquid in it by the fan pump seat 18. Further, it should be noted that the end of the liquid spray head 22 is provided with spray holes distributed in a filling shape, so as to be able to efficiently spray a dense liquid flow to efficiently clean the contact part after dust absorption, ensure the pre-treatment effect, and then perform subsequent efficient carbon dioxide welding.

[0023] The welding assembly 2 includes two groups of pressure plates 25 arranged in front of the moving slide seat 135 and a carbon dioxide gas cylinder 21. A carbon dioxide gas cylinder 19 is arranged at the top of the support assembly 1. The carbon dioxide gas cylinder 19 is connected to the pressure plates 25. An electric control box seat 15 is installed at the top of the support assembly 1. An arc heating ring 24 electrically connected to the electric control box seat 15 is arranged at the bottom end of the carbon dioxide gas cylinder 21; Among them, the setting of the carbon dioxide gas cylinder 19 facilitates injecting carbon dioxide gas into the carbon dioxide gas cylinder 21. Further, it should be noted that the carbon dioxide gas cylinder 21 is made of a high-temperature resistant plastic sleeve. An air cavity is arranged in the carbon dioxide gas cylinder 21, and air holes distributed in a filling shape are arranged on the inner side wall of the carbon dioxide gas cylinder 21. The carbon dioxide gas cylinder 21 is used to discharge carbon dioxide gas flow to form a carbon dioxide gas flow cover around the welding end head of the upper cross beam frame plate 4, so as to avoid the situation that the welding part is oxidized during bottom-side welding and affect the welding effect.

[0024] A welding groove 26 is recessed inward on the outer peripheral wall of the pressure plate 25. The two groups of pressure plates 25 are obliquely assembled. The two groups of pressure plates 25 feed the welding rod 5 clamped between them. A toothed disc 27 is arranged inside the pressure plate 25, and a rack 137 meshing with the two toothed discs 27 is installed on the front side of the support plate 131; Among them, the electric cylinder assembly 133 on the vertical bracket 13 drives two groups of pressure plates 25 to move horizontally through the air sliding seat 134 and the moving sliding seat 135, and uses the welding grooves 26 therein to clamp the welding rod 5 between them and move downward, so as to realize the stable wire feeding of the welding rod 5 and ensure the welding effect. The setting of the rack 137 can drive the gear disk 27 to mesh with the rack 137 synchronously when the pressure plate 25 is driven to move horizontally, so as to achieve the effect of efficient wire feeding of the welding rod 5.

[0025] Embodiment 4: In order to stably press-fit the upper crossbeam frame plate 4 on the front side of the vehicle frame end and clean its contact part, please refer to Figure 3 [[ID=�]]and 4 , the front bracket 12 is a rectangular bracket, and the positioning assembly 3 includes a cylinder assembly 31 installed on the side ribs of the front bracket 12. The top end of the output shaft of the cylinder assembly 31 is connected with an upper shaft seat 35. An air cylinder column 33 is arranged on the upper shaft seat 35. The output end of the air cylinder column 33 is communicated with a micro air pump 32 installed on the front bracket 12, and the output end of the micro air pump 32 is communicated with the input end of the cylinder assembly 31; Among them, the setting of the micro air pump 32 can reciprocally transport the gas in the air cylinder column 33 and the cylinder assembly 31. It should be added that the micro air pump 32 is a two-way pump. The setting of the cylinder assembly 31 can drive the upper shaft seat 35 to move upward when driven, drive the left clamp 36 and the right clamp 37 on it to deform, and make their tops move inward, so as to stably clamp the upper crossbeam frame plate 4 and the vehicle frame end from the front and rear ends, and ensure the positioning and clamping effect.

[0026] The positioning assembly 3 includes a lower shaft rod 34 installed inside the front bracket 12. A right clamp 37 and a left clamp 36 are hinged between the end of the lower shaft rod 34 and the end of the upper shaft seat 35. The top end of the left clamp 36 is bifurcated, and the upper crossbeam frame plate 4 is placed at the bifurcated part at the top end of the left clamp 36; Among them, the setting of the lower shaft rod 34 and the upper shaft seat 35 on its top side can limit and assemble the left clamp 36 and the right clamp 37 between them. The setting of the bifurcated part at the top end of the right clamp 37 facilitates directly placing the upper crossbeam frame plate 4 at the bifurcated part on the top side of the left clamp 36, and ensures the stability during the clamping and positioning driving process.

[0027] A piston disk 331 is plugged inside the air cylinder column 33. The outer end of the piston disk 331 is fixedly connected with a guide frame 39 in the shape of a side U. The top of the guide frame 39 is connected with an air spray head 38. The air spray head 38 is a Y-shaped pipe. An air pump bottle 16 is installed on the top of the rear bracket 11, and the output end of the air pump bottle 16 is communicated with the input end of the air spray head 38; Among them, the setting of the piston disc 331 at the end of the guide frame 39 enables it to move horizontally left and right inside the air cylinder column 33 under the drive of the micro air pump 32, synchronously driving the air spray head 38 at the top of the guide frame 39 to move left and right. Thus, during the driving and positioning process, the horizontal movement of the air spray head 38 is used to blow and clean the upper cross beam frame plate 4 and the frame end face from the bottom side. At the same time, the setting of the air pump bottle 16 can inject air flow into the air spray head 38, and utilize the left and right blowing of the air spray head 38, so as to achieve the effect of efficient cleaning and ensure the subsequent carbon dioxide welding effect.

[0028] Both the right clamp 37 and the left clamp 36 are composed of three-section rod frames hinged together. At the bottom ends of the right clamp 37 and the left clamp 36, there are shaft sleeves sleeved on the lower shaft rod 34, and at the contact positions of the right clamp 37 and the left clamp 36, there are also shaft sleeves sleeved on the end heads of the upper shaft seats 35. Among them, the settings of the left clamp 36 and the right clamp 37 can be synchronously deformed under the drive of the micro air pump 32, and press and install the upper cross beam frame plate 4 placed at their tops on the front end face of the frame.

[0029] The working principle and usage process of the present invention: When the device works, first place the upper cross beam frame plate 4 at the bifurcated part on the top side of the left clamp 36, then push the device to the corresponding position, adjust the self-locking universal wheels 14 to make them in a self-locking state, and then turn on the micro air pump 32 to transport the gas in the air cylinder column 33 to the cylinder assembly 31. During the process of driving the air spray head 38 to move horizontally, at the same time, the cylinder assembly 31 pushes the upper shaft seat 35 upward. By using the inward rotation of the left clamp 36 and the right clamp 37, the upper cross beam frame plate 4 is pressed, extruded and limited at the front end of the frame. And during the movement of the air spray head 38, air flow is ejected to perform efficient dust blowing treatment on the upper cross beam frame plate 4 and the frame end face, realizing the efficient positioning and clamping of the upper cross beam frame plate 4. When the positioning is completed, the electric cylinder assembly 133 on the vertical support 13 drives the air sliding seat 134 and the moving sliding seat 135 to move reciprocally. The liquid spray head 22 and the air hood seat 23 on the front side of the air sliding seat 134 can cooperate with the air pump bottle 16 and the liquid pump bottle 17 to first suck the dust between the upper cross beam frame plate 4 and the frame end face, and then spray liquid for cleaning to ensure the pre-cleaning effect. At the same time, the reciprocating drive of the moving sliding seat 135 can drive the pressure plate 25 and the toothed disc 27 thereon to move horizontally and rotate, extruding the 6 between the two pressure plates 25 to stably feed the wire downward to ensure the wire feeding effect. And the carbon dioxide gas cylinder 19 can output carbon dioxide gas flow through the carbon dioxide cylinder 21 to form a carbon dioxide gas hood outside the welding rod 5 to carry out carbon dioxide protection on the welding part to ensure the welding effect. At the same time, the electric control box seat 15 can energize the liquid spray head 22 to make it generate arc heat and melt the welding rod 5 inside it into a liquid flow state and drip onto the contact position between the bottom upper cross beam frame plate 4 and the frame end, realizing the corresponding efficient and stable welding.

[0030] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For a person skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be construed as limiting the claims concerned.

[0031] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. A person skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.

Claims

1. A welding device for the upper crossbeam of a vehicle water tank, characterized in that: It includes a bracket assembly (1), a welding assembly (2) and a positioning assembly (3) assembled thereon. An upper crossbeam frame plate (4) is placed on the positioning assembly (3). The positioning assembly (3) clamps the upper crossbeam frame plate (4) on the front side of the vehicle frame. The positioning assembly (3) is used to blow and clean the contact surfaces of the upper crossbeam frame plate (4) and the vehicle frame. The welding assembly (2) holds and transports a welding rod (5), and the welding assembly (2) is used to perform reciprocating carbon dioxide welding on the contact part between the bottom side upper crossbeam frame plate (4) and the vehicle frame.

2. The welding device for the upper cross beam of a vehicle water tank according to claim 1, characterized in that: The bracket assembly (1) includes a rear bracket (11) and a front bracket (12) on its front side. Self-locking universal wheels (14) are fixedly installed at the rear end corners of the bottom of the rear bracket (11) and the front end corners of the bottom of the front bracket (12). A vertical bracket (13) is provided in the middle of the rear bracket (11) and the front bracket (12), and a welding assembly (2) is assembled on the vertical bracket (13).

3. The welding device for the upper cross beam of a vehicle water tank according to claim 2, wherein: The vertical bracket (13) includes a support plate (131) and three groups of sliding grooves (132) opened thereon. An air slide seat (134) and a moving slide seat (135) arranged in the sliding grooves (132) are slidably sleeved on the support plate (131). The outer ends of the air slide seat (134) and the moving slide seat (135) are connected with a support rod (136). An electric cylinder assembly (133) is assembled on the outer side of the support plate (131), and the output end of the electric cylinder assembly (133) is connected to the end of the support rod (136).

4. The welding device for the upper cross beam of a vehicle water tank according to claim 3, characterized in that: The welding assembly (2) includes a liquid spray head (22) and an air hood seat (23) arranged at the top side of the welding part of the upper crossbeam frame plate (4). A liquid pump bottle (17) and a blower pump seat (18) are installed on the top of the rear bracket (11), and the outer ends of the liquid pump bottle (17) and the blower pump seat (18) are respectively communicated with the air hood seat (23) and the liquid spray head (22) located in front of the air slide seat (134).

5. The welding device for the upper crossbeam of a vehicle water tank according to claim 4, characterized in that: The welding assembly (2) includes two groups of pressure plates (25) arranged in front of the moving slide seat (135) and a carbon dioxide gas cylinder (21). A carbon dioxide gas cylinder (19) is arranged on the top of the bracket assembly (1). The carbon dioxide gas cylinder (19) is communicated with the pressure plates (25). An electric control box seat (15) is installed on the top of the bracket assembly (1). An arc heating ring (24) electrically connected to the electric control box seat (15) is arranged at the bottom end of the carbon dioxide gas cylinder (21).

6. The welding device for the upper cross beam of a vehicle water tank according to claim 5, characterized in that: A welding groove (26) recessed inward is formed on the outer peripheral wall of the pressure plate (25). The two groups of pressure plates (25) are obliquely assembled. The two groups of pressure plates (25) feed the welding rod (5) clamped between them. A toothed disc (27) is arranged inside the pressure plate (25), and a rack (137) meshing with the two groups of toothed discs (27) is installed on the front side of the support plate (131).

7. The welding device for the upper cross beam of a vehicle water tank according to claim 2, characterized in that: The front bracket (12) is a rectangular bracket. The positioning assembly (3) includes a cylinder assembly (31) mounted on the side ribs of the front bracket (12). The top end of the output shaft of the cylinder assembly (31) is connected to an upper shaft seat (35). A cylinder column (33) is arranged on the upper shaft seat (35). The output end of the cylinder column (33) is communicated with a micro air pump (32) mounted on the front bracket (12), and the output end of the micro air pump (32) is communicated with the input end of the cylinder assembly (31).

8. A welding device for the upper crossbeam of a vehicle water tank according to claim 7, characterized in that: The positioning assembly (3) includes a lower shaft rod (34) mounted inside the front bracket (12). A left clamp (36) and a right clamp (37) are hinged between the end of the lower shaft rod (34) and the end of the upper shaft seat (35). The top end of the left clamp (36) is bifurcated, and the upper crossbeam frame plate (4) is placed at the bifurcated part of the top end of the left clamp (36).

9. The welding device for the upper cross beam of a vehicle water tank according to claim 7, characterized in that: A piston disc (331) is plugged inside the cylinder column (33). The outer end of the piston disc (331) is fixedly connected to a guide frame (39) in a side U shape. The top of the guide frame (39) is connected to an air spray head (38). The air spray head (38) is a Y-shaped pipe. An air pump bottle (16) is mounted on the top of the rear bracket (11), and the output end of the air pump bottle (16) is communicated with the input end of the air spray head (38).

10. A welding device for the upper cross beam of a vehicle water tank according to claim 8, characterized in that: Both the left clamp (36) and the right clamp (37) are composed of three-section rod frames hinged together. The bottom ends of the left clamp (36) and the right clamp (37) are provided with bushings sleeved on the lower shaft rod (34), and the contact part between the left clamp (36) and the right clamp (37) is also provided with a bushing sleeved on the end of the upper shaft seat (35).

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