Lifting device for welding equipment

Abstract

The utility model relates to the technical field of welding equipment, and discloses a lifting device for welding equipment, which comprises a supporting plate. The lifting assembly comprises at least two lifting structures, and the lifting structures are connected to the bearing plate respectively; the driving assembly comprises a linkage structure and a driving part, the lifting structures are connected through the linkage structure, and the driving part is connected with the linkage structure; when the driving piece is started, the linkage structure can drive the at least two lifting structures to move synchronously and drive the supporting plate to do lifting motion. The lifting device for the welding equipment is simple and compact in structure, easy to disassemble and assemble, low in manufacturing cost and high in stability.

Description

Technical Field

[0001] This utility model belongs to the technical field of welding equipment, and specifically relates to a lifting device for welding equipment. Background Technology

[0002] In welding operations, lifting devices are crucial equipment used to elevate the product to be welded to a suitable height or position for welding. Traditional welding lifting devices typically employ a single-point support structure. While this design is simple, it has several shortcomings in practical applications. For example, single-point support may cause the product to tilt or become unstable during lifting, affecting welding quality and potentially posing safety risks to operators. Furthermore, when supporting heavy or irregularly shaped workpieces, single-point support lifting devices may deform due to uneven stress, further reducing welding efficiency and accuracy.

[0003] While some existing technologies have developed support structures capable of multi-point support to improve stability and load-bearing capacity during lifting, these solutions typically require an independent drive unit for each support point. This design not only increases equipment complexity and occupies more installation space but also leads to higher manufacturing costs and maintenance difficulties. More importantly, when multiple drive units operate synchronously, the control system must possess highly complex coordination control programs to ensure synchronized lifting and lowering of all support points, further increasing system complexity and the risk of failure. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a simple, compact, easy-to-assemble and disassemble, low-cost, and highly stable lifting device for welding equipment.

[0005] The objective of this utility model can be achieved through the following technical solution: a lifting device for welding equipment, comprising:

[0006] Support plate;

[0007] A lifting assembly, comprising at least two lifting structures, wherein the lifting structures are respectively connected to the support plate;

[0008] A drive assembly includes a linkage structure and a drive component. The lifting structure is connected through the linkage structure, and the drive component is connected to the linkage structure. When the drive component is activated, the linkage structure can drive at least two of the lifting structures to move synchronously and drive the support plate to move up and down.

[0009] In the aforementioned lifting device for welding equipment, the lifting structure includes a first lifting structure, a second lifting structure, a third lifting structure, and a fourth lifting structure. The linkage structure includes a first linkage structure, a second linkage structure, and a third linkage structure. The first linkage structure is connected to the first lifting structure and the second lifting structure, the second linkage structure is connected to the second lifting structure and the third lifting structure, and the third linkage structure is connected to the third lifting structure and the fourth lifting structure. The driving component is connected to the first linkage structure, the second linkage structure, or the third linkage structure. When the driving component is activated, the first linkage structure, the second linkage structure, and the third linkage structure move synchronously.

[0010] In the aforementioned lifting device for welding equipment, the first lifting structure, the second lifting structure, the third lifting structure, and the fourth lifting structure are all provided with first bevel gears. The two ends of the first linkage structure are respectively meshed with the first bevel gears of the first lifting structure and the second lifting structure. The two ends of the second linkage structure are respectively meshed with the first bevel gears of the second lifting structure and the third lifting structure. The two ends of the third linkage structure are respectively meshed with the first bevel gears of the third lifting structure and the fourth lifting structure. When the driving member drives any one of the first linkage structure, the second linkage structure, and the third linkage structure to move, the other two move synchronously through multiple first bevel gears.

[0011] In the aforementioned lifting device for welding equipment, the first lifting structure, the second lifting structure, the third lifting structure, and the fourth lifting structure each include a first fixed seat and a lead screw. The first bevel gear is rotatably mounted on the first fixed seat, and the lead screw is rotatably mounted on the first bevel gear and connected to the support plate. When the driving member drives the first linkage structure, the second linkage structure, and the third linkage structure to move synchronously, the lead screw rotates within the first bevel gear and moves relative to the first fixed seat along the length direction, causing the support plate to perform lifting and lowering movements.

[0012] In the above-mentioned lifting device for welding equipment, the first linkage structure includes a second bevel gear and a third bevel gear. The second bevel gear is meshed with the first bevel gear of the first lifting structure, and the third bevel gear is meshed with the first bevel gear of the second lifting structure. Both the second bevel gear and the third bevel gear are provided with a first connecting shaft, and the two first connecting shafts are detachably connected.

[0013] In the above-mentioned lifting device for welding equipment, the second linkage structure includes a fourth bevel gear and a fifth bevel gear. The fourth bevel gear is meshed with the first bevel gear of the second lifting structure, and the fifth bevel gear is meshed with the first bevel gear of the third lifting structure. The output end of the drive component is provided with a sixth bevel gear, and the sixth bevel gear is meshed with the fourth bevel gear and the fifth bevel gear respectively, or connected to the fourth bevel gear and the fifth bevel gear through a reversing structure.

[0014] In the above-mentioned lifting device for welding equipment, the reversing structure includes a seventh bevel gear and a rotating shaft passing through the seventh bevel gear. When the sixth bevel gear is connected to the fourth bevel gear and the fifth bevel gear respectively through the reversing structure, the sixth bevel gear meshes with the seventh bevel gear, and both the fourth bevel gear and the fifth bevel gear are provided with a second connecting shaft that is detachably connected to the rotating shaft.

[0015] In the above-mentioned lifting device for welding equipment, the third linkage structure includes an eighth bevel gear and a ninth bevel gear. The eighth bevel gear is meshed with the first bevel gear of the third lifting structure, and the ninth bevel gear is meshed with the first bevel gear of the fourth lifting structure. Both the eighth bevel gear and the ninth bevel gear are provided with a third connecting shaft, and the two third connecting shafts are detachably connected.

[0016] The aforementioned lifting device for welding equipment further includes a support platform and a guide structure. The guide structure is movably mounted on the support platform, connected to the support plate, and guides the movement of the support plate.

[0017] In the above-mentioned lifting device for welding equipment, the support platform includes a support frame and a load-bearing plate disposed on the support frame. The guide structure, lifting assembly and driving assembly are detachably disposed on the load-bearing plate. The guide structure includes a second fixed seat detachably disposed on the load-bearing plate and a guide rod movably sleeved in the second fixed seat and passing through the load-bearing plate and connecting with the support plate. An anti-collision member is provided between the guide rod and the support frame.

[0018] Compared with existing technologies, the beneficial effects of this utility model are as follows: By setting at least two lifting structures connected to the support plate and linking these lifting structures through a linkage structure, the driving component is connected to the linkage structure, so that after the driving component is activated, the linkage structure can drive at least two lifting structures to move synchronously. This design provides multi-point support for the support plate, effectively preventing the product from tilting or becoming unstable during lifting and ensuring welding quality. At the same time, the cooperation between a single driving component and the linkage structure reduces the number of parts and system complexity, making the overall structure more compact and effectively reducing manufacturing costs and maintenance difficulty. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the lifting device for welding equipment according to an embodiment of the present invention.

[0020] Figure 2 This is an exploded view of a lifting device for welding equipment according to an embodiment of the present invention.

[0021] Figure 3 This is a partial exploded view of the lifting device for welding equipment according to an embodiment of the present invention.

[0022] Figure 4 This is a cross-sectional view of a lifting device for welding equipment according to an embodiment of the present invention.

[0023] Figure 5 This is a partial structural schematic diagram of a lifting device for welding equipment according to an embodiment of the present invention.

[0024] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 100, support plate; 200, lifting assembly; 210, first lifting structure; 211, first bevel gear; 212, first fixed seat; 213, lead screw; 220, second lifting structure; 230, third lifting structure; 240, fourth lifting structure; 300, linkage structure; 310, first linkage structure; 311, second bevel gear; 312, third bevel gear; 313, first connecting shaft; 320, second linkage structure. Structure; 321, Fourth bevel gear; 322, Fifth bevel gear; 323, Second connecting shaft; 330, Third linkage structure; 331, Eighth bevel gear; 332, Ninth bevel gear; 333, Third connecting shaft; 400, Driving component; 410, Sixth bevel gear; 500, Reversing structure; 510, Seventh bevel gear; 520, Rotating shaft; 600, Support platform; 610, Support frame; 620, Support plate; 700, Guide structure; 710, Second fixed seat; 720, Guide rod; 800, Anti-collision component. Detailed Implementation

[0025] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] like Figures 1 to 5 As shown, a lifting device for welding equipment includes:

[0028] Support plate 100;

[0029] The lifting assembly 200 includes at least two lifting structures, and the lifting structures are respectively connected to the support plate 100.

[0030] The drive assembly includes a linkage structure 300 and a drive component 400. The lifting structure is connected via the linkage structure 300, and the drive component 400 is connected to the linkage structure 300. When the drive component 400 is activated, the linkage structure 300 drives at least two lifting structures to move synchronously, thereby lifting the support plate 100. This design provides multi-point support for the support plate 100 through multiple lifting structures, preventing tilting or instability of the product during lifting and effectively ensuring welding quality. By using a single drive component 400 in conjunction with the linkage structure 300, the need for multiple drive components 400 is eliminated, effectively reducing the number of parts and system complexity, resulting in a more compact overall structure and lower manufacturing costs and maintenance difficulty. Furthermore, the reduced number of parts also reduces the number of potential failure points, effectively improving the reliability and service life of the entire device.

[0031] Specifically, such as Figures 1 to 5 As shown, in this embodiment, the lifting device consists of a support platform 600, a support plate 100, a lifting assembly 200, and a drive assembly. The support platform 600 serves as a load-bearing component, providing support for the support plate 100, the lifting assembly 200, the drive assembly, and the product. The support plate 100 is vertically mounted on the support platform 600 via the lifting assembly 200, used to place the product and move it to the welding position. The lifting assembly 200 cooperates with the drive assembly to drive the support plate 100 to perform vertical movement.

[0032] In this embodiment, the load-bearing platform 600 includes a support frame 610 and a load-bearing plate 620 disposed on the support frame 610. The support frame 610 is formed by multiple horizontal beams and vertical beams connected by bolts, forming a stable frame structure that ensures the stability and load-bearing capacity of the structure. The horizontal beams are provided in multiple sets, distributed in upper and lower layers, and there is a gap between the upper and lower sets of horizontal beams for the guide structure 700 to move. The load-bearing plate 620 is detachably disposed on the support frame 610 by bolts.

[0033] In this embodiment, a guide structure 700 is also provided, which is movably mounted on the load-bearing plate 620 and detachably connected to the support plate 100 by bolts, and guides the movement of the support plate 100. This design, through the guide structure 700, guides the movement of the support plate 100, ensuring that the support plate 100 remains horizontal during lifting and lowering, avoiding tilting and improving welding quality; the detachable design also makes maintenance and replacement more convenient.

[0034] In this embodiment, the guide structure 700 includes a second fixed seat 710 detachably mounted on the load-bearing plate 620, and a guide rod 720 movably fitted within the second fixed seat 710 and passing through the load-bearing plate 620 and detachably connected to the support plate 100. An anti-collision member 800 is provided between the guide rod 720 and the crossbeam of the support frame 610. Preferably, the anti-collision member 800 is a cylindrical rubber pad. This design prevents the guide rod 720 from colliding with the crossbeam during movement, thereby preventing damage to the guide rod 720 and the crossbeam, and effectively extending the service life of the device.

[0035] In this embodiment, the lifting assembly 200 includes a first lifting structure 210, a second lifting structure 220, a third lifting structure 230, and a fourth lifting structure 240 respectively connected to the four corners of the support plate 100. The first lifting structure 210, second lifting structure 220, third lifting structure 230, and fourth lifting structure 240 have identical structures. One end of each structure is detachably connected to the support plate 100 via bolts, and the other end is detachably mounted on the load-bearing plate 620 via bolts. This design provides stable support to the support plate 100 in four directions, effectively preventing the support plate 100 from tilting or becoming unstable during movement.

[0036] In this embodiment, the first lifting structure 210, the second lifting structure 220, the third lifting structure 230, and the fourth lifting structure 240 each include a first fixed base 212, a lead screw 213, and a first bevel gear 211. The first fixed base 212 is detachably connected to the load-bearing plate 620 via bolts. The lead screw 213 is rotatably mounted on the first bevel gear 211 and connected to the support plate 100 via bolts. The first bevel gear 211 is rotatably mounted on the first fixed base 212, serving as the power input structure for the lead screw 213. When the first bevel gear 211 rotates under the drive of the linkage structure 300, the lead screw 213 rotates within the first bevel gear 211 and moves relative to the first fixed base 212 along its length, causing the support plate 100 to move up and down. The design of the first bevel gear 211 not only achieves stable power transmission but also, in conjunction with the linkage structure 300, enables synchronous movement of multiple lifting structures, further improving synchronization and making the entire system more compact, suitable for installation and use in limited spaces. Furthermore, the bevel gear drive can adjust the transmission ratio according to actual needs, adapting to different working conditions and enhancing the system's versatility and applicability. In addition, the lead screw 213 drive has high load-bearing capacity and self-locking performance, maintaining stable lifting movement even under heavy loads, making it suitable for heavy-duty welding operations.

[0037] Preferably, in this embodiment, the first fixed base 212 is rectangular and hollow, vertically arranged on the load-bearing plate 620, used to accommodate and protect the first bevel gear 211 and the lead screw 213. The first bevel gear 211 has a guide sleeve rotatably connected to the first fixed base 212, and a bevel tooth portion arranged circumferentially along the axial direction of the guide sleeve at the bottom of the guide sleeve, used to transmit power to the lead screw 213. The lead screw 213 is vertically rotatably inserted into the guide sleeve, one end is detachably connected to the support plate 100, and the other end passes through the load-bearing plate 620 and extends away from the support plate 100. This design not only improves the convenience of assembling and disassembling the lifting structure, but also ensures the stability of the lifting structure during operation.

[0038] To achieve synchronous movement of multiple lifting structures, in this embodiment, the drive assembly includes a linkage structure 300 and a drive component 400. The linkage structure 300 is disposed between the various lifting structures, and the first lifting structure 210, the second lifting structure 220, the third lifting structure 230, and the fourth lifting structure 240 are sequentially connected. The drive component 400 is connected to the linkage structure 300 and drives the multiple lifting structures to move synchronously through the linkage structure 300. By introducing the linkage structure 300, a single drive component 400 can achieve synchronous movement of multiple lifting structures, which not only effectively reduces the number of drive components 400 required and the complexity of the control system, reducing manufacturing costs, but also greatly saves installation space.

[0039] Preferably, in this embodiment, the drive component 400 is a rotary motor.

[0040] In this embodiment, the linkage structure 300 includes a first linkage structure 310, a second linkage structure 320, and a third linkage structure 330. The first linkage structure 310 is connected to the first lifting structure 210 and the second lifting structure 220, the second linkage structure 320 is connected to the second lifting structure 220 and the third lifting structure 230, and the third linkage structure 330 is connected to the third lifting structure 230 and the fourth lifting structure 240. The driving component 400 is connected to the first linkage structure 310, the second linkage structure 320, or the third linkage structure 330. When the driving component 400 rotates forward or backward, the first linkage structure 310, the second linkage structure 320, and the third linkage structure 330 move synchronously. By setting the linkage structures 300 into three independent groups, each linkage structure 300 is responsible for connecting two adjacent lifting structures, ensuring that the relative movement between all lifting structures is synchronous, thereby achieving the overall synchronous movement of the four lifting structures. Furthermore, this makes the entire system more modular, facilitating assembly and maintenance. If a problem occurs in a certain linkage structure 300, only the corresponding part needs to be replaced, without the need for a major overhaul of the entire system.

[0041] In this embodiment, the first linkage structure 310 is horizontally arranged, and its two ends are respectively engaged with the first bevel gears 211 of the first lifting structure 210 and the second lifting structure 220. The second linkage structure 320 is horizontally arranged, and its two ends are respectively engaged with the first bevel gears 211 of the second lifting structure 220 and the third lifting structure 230. The second linkage structure 320 is also horizontally arranged, and its two ends are respectively engaged with the first bevel gears 211 of the third lifting structure 230 and the fourth lifting structure 240. When the driving member 400 drives any one of the three linkage structures 310, 320, and 330 to move, the other two move synchronously through multiple first bevel gears 211. The horizontally arranged linkage structure 300 makes the entire system more compact, reduces the space occupied in the vertical direction, and ensures that they can transmit power in the same plane, reducing the torque difference in the vertical direction and further improving synchronization. The engagement of the three linkage structures with the first bevel gears 211 of each lifting structure ensures high precision in power transmission and synchronous movement. This design effectively avoids asynchrony caused by transmission errors, ensuring the stability and consistency of the support plate 100 during the lifting process.

[0042] In this embodiment, the first linkage structure 310 includes a second bevel gear 311 and a third bevel gear 312 facing opposite directions. The second bevel gear 311 is vertically arranged within the first fixed seat 212 of the first lifting structure 210 and meshes with it. The third bevel gear 312 is vertically arranged within the first fixed seat 212 of the second lifting structure 220 and meshes with it. Both the second bevel gear 311 and the third bevel gear 312 have a first connecting shaft 313 facing each other, and the two first connecting shafts 313 are detachably connected via a coupling (not shown in the figure). This design not only ensures the reliability of power transmission and avoids the problem of loosening or failure of transmission components, but also effectively improves the convenience of disassembly, assembly, and maintenance of the first linkage structure 310, reducing installation time and cost. It is worth noting that the second bevel gear 311, the third bevel gear 312, and the first connecting shaft 313 can also be a single-piece design.

[0043] In this embodiment, the second linkage structure 320 includes a fourth bevel gear 321 and a fifth bevel gear 322. The fourth bevel gear 321 is vertically arranged in the first fixed seat 212 of the second lifting structure 220 and meshes with the other side of the first bevel gear 211 of the second lifting structure 220. The fifth bevel gear 322 is vertically arranged in the first fixed seat 212 of the third lifting structure 230 and meshes with the first bevel gear 211 of the third lifting structure 230. The output end of the drive member 400 is provided with a sixth bevel gear 410, which meshes with the fourth bevel gear 321 and the fifth bevel gear 322, or is connected through a reversing structure 500. Through the meshing connection of the sixth bevel gear 410 with the fourth bevel gear 321 and the fifth bevel gear 322, or the cooperative connection of the sixth bevel gear 410, the reversing structure 500, and the fourth bevel gear 321 and the fifth bevel gear 322, the drive member 400 can directly control the movement of the second linkage structure 320, effectively simplifying the complexity of the control system. In addition, this design not only ensures the reliability of power transmission and avoids problems such as loosening or failure of transmission components, but also effectively improves the ease of disassembly and maintenance of the second linkage structure 320, reducing installation time and cost.

[0044] Preferably, in this embodiment, the sixth bevel gear 410 is connected to the fourth bevel gear 321 and the fifth bevel gear 322 via a reversing structure 500. This design effectively avoids the sixth bevel gear 410 being too large, while also making the connection between the three more stable.

[0045] In this embodiment, the reversing structure 500 includes a seventh bevel gear 510 and a rotating shaft 520 passing through the seventh bevel gear 510. The sixth bevel gear 410 meshes with the seventh bevel gear 510. The two ends of the rotating shaft 520 are detachably connected to the fourth bevel gear 321 and the fifth bevel gear 322, respectively. Both the fourth bevel gear 321 and the fifth bevel gear 322 have a second connecting shaft 323 facing each other. The two second connecting shafts 323 are connected to the two ends of the rotating shaft 520 via couplings. Through the design of the seventh bevel gear 510 and the rotating shaft 520, the drive component 400 can simultaneously output power to both lifting structures, further ensuring the reliability of power transmission and improving the convenience of disassembly, assembly, and maintenance of each component.

[0046] Preferably, the seventh bevel gear 510 is provided in two sets, arranged opposite to each other, and meshes with the sixth bevel gear 410 respectively. This design ensures that the reversing structure 500 is subjected to uniform force, effectively guaranteeing the smoothness and balance of power transmission.

[0047] In this embodiment, the third linkage structure 330 includes an eighth bevel gear 331 and a ninth bevel gear 332. The eighth bevel gear 331 is vertically arranged within the first fixed seat 212 of the third lifting structure 230 and meshes with the other side of the first bevel gear 211 of the third lifting structure 230. The ninth bevel gear 332 is vertically arranged within the first fixed seat 212 of the fourth lifting structure 240 and meshes with the first bevel gear 211 of the fourth lifting structure 240. Both the eighth bevel gear 331 and the ninth bevel gear 332 have a third connecting shaft 333 facing each other, and the two third connecting shafts 333 are detachably connected via a coupling. This design not only ensures the reliability of power transmission and avoids the problem of loosening or failure of transmission components, but also effectively improves the convenience of disassembly, assembly, and maintenance of the third linkage structure 330, reducing installation time and cost. It is worth noting that the eighth bevel gear 331, the ninth bevel gear 332, and the third connecting shaft 333 can also be a single-piece design.

[0048] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal connection of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0050] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A lifting device for welding equipment, characterized in that, include: Support plate; A lifting assembly, comprising at least two lifting structures, wherein the lifting structures are respectively connected to the support plate; A drive assembly includes a linkage structure and a drive component. The lifting structure is connected through the linkage structure, and the drive component is connected to the linkage structure. When the drive component is activated, the linkage structure can drive at least two of the lifting structures to move synchronously and drive the support plate to move up and down.

2. The lifting device for welding equipment according to claim 1, characterized in that, The lifting structure includes a first lifting structure, a second lifting structure, a third lifting structure, and a fourth lifting structure. The linkage structure includes a first linkage structure, a second linkage structure, and a third linkage structure. The first linkage structure is connected to the first lifting structure and the second lifting structure, the second linkage structure is connected to the second lifting structure and the third lifting structure, and the third linkage structure is connected to the third lifting structure and the fourth lifting structure. The driving component is connected to the first linkage structure, the second linkage structure, or the third linkage structure. When the driving component is activated, the first linkage structure, the second linkage structure, and the third linkage structure move synchronously.

3. A lifting device for welding equipment according to claim 2, characterized in that, The first, second, third, and fourth lifting structures are each equipped with a first bevel gear. The two ends of the first linkage structure are respectively meshed with the first bevel gears of the first and second lifting structures. The two ends of the second linkage structure are respectively meshed with the first bevel gears of the second and third lifting structures. The two ends of the third linkage structure are respectively meshed with the first bevel gears of the third and fourth lifting structures. When the driving member drives any one of the first, second, and third linkage structures to move, the other two move synchronously through multiple first bevel gears.

4. A lifting device for welding equipment according to claim 3, characterized in that, The first lifting structure, the second lifting structure, the third lifting structure, and the fourth lifting structure all include a first fixed seat and a lead screw. The first bevel gear is rotatably mounted on the first fixed seat, and the lead screw is rotatably mounted on the first bevel gear and connected to the support plate. When the driving member drives the first linkage structure, the second linkage structure, and the third linkage structure to move synchronously, the lead screw rotates within the first bevel gear and moves relative to the first fixed seat along the length direction, causing the support plate to perform lifting and lowering movements.

5. A lifting device for welding equipment according to claim 3, characterized in that, The first linkage structure includes a second bevel gear and a third bevel gear. The second bevel gear meshes with the first bevel gear of the first lifting structure, and the third bevel gear meshes with the first bevel gear of the second lifting structure. Both the second bevel gear and the third bevel gear are provided with a first connecting shaft, and the two first connecting shafts are detachably connected.

6. A lifting device for welding equipment according to claim 3, characterized in that, The second linkage structure includes a fourth bevel gear and a fifth bevel gear. The fourth bevel gear meshes with the first bevel gear of the second lifting structure, and the fifth bevel gear meshes with the first bevel gear of the third lifting structure. The output end of the drive unit is provided with a sixth bevel gear, and the sixth bevel gear meshes with the fourth bevel gear and the fifth bevel gear respectively, or is connected to the fourth bevel gear and the fifth bevel gear through a reversing structure.

7. A lifting device for welding equipment according to claim 6, characterized in that, The reversing structure includes a seventh bevel gear and a rotating shaft passing through the seventh bevel gear. When the sixth bevel gear is connected to the fourth bevel gear and the fifth bevel gear respectively through the reversing structure, the sixth bevel gear meshes with the seventh bevel gear. The fourth bevel gear and the fifth bevel gear are each provided with a second connecting shaft that is detachably connected to the rotating shaft.

8. A lifting device for welding equipment according to claim 3, characterized in that, The third linkage structure includes an eighth bevel gear and a ninth bevel gear. The eighth bevel gear is meshed with the first bevel gear of the third lifting structure, and the ninth bevel gear is meshed with the first bevel gear of the fourth lifting structure. Both the eighth and ninth bevel gears are provided with a third connecting shaft, and the two third connecting shafts are detachably connected.

9. A lifting device for welding equipment according to claim 1, characterized in that, It also includes a support platform and a guide structure, wherein the guide structure is movably mounted on the support platform, connected to the support plate, and guides the movement of the support plate.

10. A lifting device for welding equipment according to claim 9, characterized in that, The load-bearing platform includes a support frame and a load-bearing plate disposed on the support frame. The guide structure, lifting assembly and driving assembly are detachably disposed on the load-bearing plate. The guide structure includes a second fixed seat detachably disposed on the load-bearing plate and a guide rod movably sleeved in the second fixed seat and passing through the load-bearing plate and connecting with the support plate. An anti-collision component is provided between the guide rod and the support frame.

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