Subway air conditioner frame assembling and welding platform

Abstract

The invention provides a subway air conditioner frame assembling and welding platform, which belongs to the technical field of subway air conditioner processing and comprises a workbench, a plurality of clamping pieces and a plurality of jacking pieces. The workbench is used for placing an air conditioner frame. The multiple clamping pieces are arranged around the workbench at intervals and used for being matched with one another to fix the air conditioner frame, and all the clamping pieces have the freedom degree of moving towards and away from the workbench. The multiple jacking pieces are arranged on the workbench and correspond to the multiple clamping pieces one to one. Each jacking piece is provided with a lifting end used for lifting the air conditioner frame. Each lifting end is connected with the corresponding clamping piece through a connecting piece, each connecting piece is provided with a fixed end connected with the corresponding lifting end and a movable end connected with the corresponding clamping piece, and a guide structure is arranged between each movable end and the workbench. According to the subway air conditioner frame assembling and welding platform, it is ensured that when an air conditioner frame is hoisted through hoisting equipment, the air conditioner frame does not interfere with or collide with the clamping pieces.

Description

Technical Field

[0001] The invention belongs to the technical field of subway air-conditioning processing, and more specifically, relates to a subway air-conditioning frame assembly welding platform. Background Art

[0002] The subway air-conditioning frame (hereinafter referred to as the "air-conditioning frame") is the core supporting component of the rail vehicle air-conditioning system. It is usually a rectangular frame structure assembled and welded from multiple alloy profiles. Its main function is to install and fix the rooftop air-conditioning unit and participate in organizing the airflow path. Its performance is directly related to the air-conditioning efficiency, the body sealing and the overall reliability of the system.

[0003] In existing production processes, air conditioner frames are typically positioned on a dedicated welding platform for assembly and welding. To ensure the stability of the air conditioner frame during operation, the platform is equipped with multiple clamping and fixing mechanisms around the perimeter to securely press the frame against the platform.

[0004] Due to the large size and significant weight of the air conditioner frame, it must be removed with lifting equipment after the welding process is completed. This creates a spatial interference between the clamping and fixing mechanisms surrounding the welding platform and the air conditioner frame, hindering its efficient and safe separation from the welding platform and posing a certain risk of collision with the clamping and fixing mechanisms. Summary of the Invention

[0005] The purpose of the present invention is to provide a subway air-conditioning frame assembly welding platform, aiming to ensure the safe lifting and separation of the air-conditioning frame after welding.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a subway air-conditioning frame assembly welding platform, comprising: Workbench for placing the air conditioner frame; A plurality of clamping members are spaced around the workbench and are used to cooperate with each other to fix the air conditioning frame, and each clamping member has the freedom to move toward and away from the workbench; and A plurality of lifting members are provided on the workbench and correspond one to one with the plurality of clamping members; each of the lifting members has a lifting end for lifting the air conditioning frame; Each of the lifting ends is connected to the corresponding clamping member through a connecting member, and the connecting member has a fixed end connected to the lifting end and a movable end connected to the clamping member, and a guide structure is provided between each movable end and the workbench; When the lifting end lifts the air conditioning frame, the fixed end rises synchronously, and the movable end drives the clamping member to move back toward the workbench under the action of the guide structure to avoid the removal trajectory of the air conditioning frame.

[0007] In a possible implementation, the clamping member includes: A hinge support is arranged to slide transversely outside the workbench and has the freedom to move toward and away from the workbench; the movable end is connected to the hinge support; A clamping arm is hinged to the hinge support, and has a swing end and a connecting end at both ends; the clamping arm has a clamping posture in which the swing end is located above the air conditioning frame, and a avoiding posture in which the swing end avoids the space above the air conditioning frame; the connecting end is transmission-connected to a driving member to switch the clamping arm between the clamping posture and the avoiding posture; and a clamping head slidably disposed at the swing end of the clamping arm; the clamping head has a clamping position and an escape position, and has elastic freedom to move from the clamping position to the escape position; The clamping head is connected to the clamping arm through a linkage assembly, so that when the clamping arm switches to the avoidance posture, the linkage assembly drives the clamping head to move synchronously to the avoidance position; When the clamping arm is in the clamping posture and the clamping head is in the clamping position, the clamping head can abut against the top surface of the air conditioning frame to limit the movement of the air conditioning frame relative to the workbench; When the clamping arm is in the avoidance posture and the clamping head is in the avoidance position, the clamping head can avoid the removal trajectory of the air conditioning frame.

[0008] In a possible implementation, a hinge shaft for rotating the clamping arm is fixedly provided on the hinge support, and the linkage assembly includes: A first gear, fixedly arranged on the hinge shaft; a second gear rotatably disposed on the clamping arm and meshing with the first gear; and a rack, slidably disposed on the clamping arm along the length of the clamping arm and meshing with the second gear; the rack has a pushing portion at one end facing the clamping head; When the clamping arm switches from the avoidance posture to the clamping posture, the first gear and the second gear transmit kinetic energy to the rack, so that the rack pushes the clamping head from the avoidance position to the clamping position through the pushing portion and is fixed at the clamping position.

[0009] In a possible implementation, the pushing portion has an end facing the clamping head with a pushing inclined surface, the clamping head has a matching inclined surface, and the pushing inclined surface abuts against the matching inclined surface; When the clamping arm switches from the avoidance posture to the clamping posture, the pushing inclined surface pushes the clamping head from the avoidance position to the clamping position through the matching inclined surface.

[0010] In one possible implementation, the clamping head includes: a sliding portion, slidably disposed on the clamping arm; The pressing part is a ball hinged on the sliding part.

[0011] In a possible implementation, a spring is provided between the clamping head and the clamping arm; When the clamping arm switches from the clamping posture to the avoidance posture, the spring pushes the clamping head to move from the clamping position to the avoidance position.

[0012] In a possible implementation, the driving member is a first oil cylinder, a cylinder body of the first oil cylinder is hinged to the workbench, and a piston rod of the first oil cylinder is hinged to the connecting end.

[0013] In a possible implementation, the guide structure includes: A guide groove is provided on the workbench; and a docking portion, fixedly disposed on the movable end and slidably embedded in the guide groove, so that the movable end has the freedom to move along the extending direction of the guide groove; The guide groove extends from bottom to top and back toward the workbench, so that when the fixed end moves upward, the movable end moves synchronously along the guide groove and drives the clamping member to move back toward the workbench.

[0014] In a possible implementation, the connecting member includes: A fixing portion, fixedly arranged on the lifting end; the fixing portion forms the fixed end; The connecting portion has one end connected to the fixed portion in a transverse sliding manner and the other end connected to the clamping member in a vertical sliding manner; the end of the connecting portion away from the fixed portion forms the movable end.

[0015] In a possible implementation, the lifting member is a second vertically telescopic oil cylinder, a cylinder body of the second oil cylinder is fixedly connected to the workbench, and an end of a piston rod of the second oil cylinder forms the lifting end.

[0016] The subway air-conditioning frame assembly welding platform provided by the present invention has the following beneficial effects compared with the prior art: before welding, the clamping part is in the initial position close to the edge of the workbench, firmly pressing the air-conditioning frame against the workbench, thereby ensuring that the air-conditioning frame will not be displaced due to vibration or operating force during the welding process, and providing a stable foundation for welding accuracy. After welding is completed, the lifting part is started, and the lifting end is lifted upward, driving the air-conditioning frame to rise synchronously. At this time, the movable end of the connecting part moves under the action of the guide structure, so that the movable end slides in the direction away from the air-conditioning frame while rising, thereby driving the clamping part to translate in the direction away from the air-conditioning frame, and finally forming a sufficient distance between the clamping part and the air-conditioning frame. Compared with the traditional clamping mechanism that is fixed to the edge of the workbench and causes spatial interference with the hoisted air-conditioning frame, the outward avoidance design of the clamping part in the present invention can ensure that when the air-conditioning frame is lifted by the lifting equipment, the air-conditioning frame will not interfere with or collide with the clamping part. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of the overall structure of the subway air conditioning frame welding platform provided by an embodiment of the present invention; Figure 2 A cross-sectional view of a subway air conditioning frame assembly welding platform provided by an embodiment of the present invention; Figure 3 A cross-sectional view from another angle of the subway air conditioning frame assembly welding platform provided by an embodiment of the present invention; Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part A.

[0019] In the figure: 1. workbench; 11. guide groove; 12. first slide groove; 13. supporting part; 2. clamping member; 21. hinge support; 211. hinge shaft; 212. first slider; 22. driving member; 23. clamping arm; 231. second slide groove; 232. guide part; 2321. notch; 24. clamping head; 241. matching slope; 242. sliding part; 243. pressing part; 251. first gear; 252. second gear; 253. rack; 2531. second slider; 254. pushing part; 2541. pushing slope; 26. spring; 3. lifting member; 4. connecting member; 41. fixing part; 411. pad; 42. connecting part; 421. docking part. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] See Figure 1 and Figure 2 , the subway air-conditioning frame assembly welding platform provided by the present invention is now described. The subway air-conditioning frame assembly welding platform includes a workbench 1, a plurality of clamping members 2 and a plurality of lifting members 3. Among them, the workbench 1 is used to place the air-conditioning frame. A plurality of clamping members 2 are arranged at intervals around the workbench 1, and are used to cooperate with each other to fix the air-conditioning frame, and all have the freedom to move toward and away from the workbench 1. A plurality of lifting members 3 are all arranged on the workbench 1, and correspond one to one with the plurality of clamping members 2. Each lifting member 3 has a lifting end for lifting the air-conditioning frame.

[0022] Each lifting end is connected to the corresponding clamping member 2 through a connecting member 4. The connecting member 4 has a fixed end connected to the lifting end and a movable end connected to the clamping member 2. There is a guiding structure between each movable end and the workbench 1.

[0023] When the air conditioner frame is lifted at the lifting end, the fixed end rises synchronously, and the movable end drives the clamping member 2 to move back to the workbench 1 under the action of the guide structure to avoid the removal trajectory of the air conditioner frame.

[0024] During welding, lifting member 3 is retracted, and the air conditioner frame is placed stably on workbench 1. Multiple clamps 2 are positioned against workbench 1, pressing the frame against it from different directions. This effectively limits displacement of the frame due to external forces during welding, ensures precise alignment of the weld seams of the various alloy profiles, and improves the welding quality of the frame.

[0025] After the air conditioner frame is assembled and welded, the lifting end of the lifting member 3 lifts the air conditioner frame upward through the fixed end of the connecting member 4. Simultaneously, the movable end of the connecting member 4, guided by the guide structure, moves the clamping member 2 away from the workbench 1, thereby clearing the lifting path around and above the air conditioner frame and ensuring a safe and smooth lifting process. During this process, the clamping member 2 simultaneously avoids the removal path of the air conditioner frame as it rises, avoiding the spatial interference between the clamping mechanism and the lifting equipment in traditional platforms, and ensuring the safe lifting and separation of the air conditioner frame after welding.

[0026] In some embodiments, see Figure 2 and Figure 3 The clamping member 2 includes a hinge support 21, a clamping arm 23 and a clamping head 24. The hinge support 21 is arranged to slide laterally outside the workbench 1 and has the freedom to move toward and away from the workbench 1. The movable end is connected to the hinge support 21.

[0027] The clamping arm 23 is hingedly connected to the hinge support 21 and has a swing end and a connecting end. The clamping arm 23 can have a clamping position, with the swing end positioned above the air conditioner frame, and a retracting position, with the swing end clear of the space above the frame. The connecting end is transmission-connected to a drive member 22, enabling the clamping arm 23 to switch between the clamping and retracting positions.

[0028] The clamping head 24 is slidably provided at the swing end of the clamping arm 23. The clamping head 24 has a clamping position and an escape position, and has elastic freedom to move from the clamping position to the escape position.

[0029] The clamping head 24 is connected to the clamping arm 23 through a linkage assembly, so that when the clamping arm 23 switches to the avoidance posture, the linkage assembly drives the clamping head 24 to move synchronously to the avoidance position.

[0030] When the clamping arm 23 is in the clamping posture and the clamping head 24 is in the clamping position, the clamping head 24 can abut the top surface of the air conditioning frame to limit the movement of the air conditioning frame relative to the workbench 1. When the clamping arm 23 is in the avoidance posture and the clamping head 24 is in the avoidance position, the clamping head 24 can avoid the removal trajectory of the air conditioning frame.

[0031] It should be noted that the workbench 1 has multiple sets of support portions 13, each corresponding one to each clamping member 2. The support portions 13 have a storage space inside for accommodating the clamping member 2 and the lifting member 3. A first chute 12 is defined transversely along the upper edge of the support portion 13, and a hinge support 21 is positioned within the storage space. First sliders 212 adapted for sliding engagement with the first chute 12 are fixedly mounted on either side of the hinge support 21, enabling the hinge support 21 to move smoothly under the action of the first chute 12 and the first slider 212, thereby enabling movement toward and away from the workbench 1.

[0032] During the working process, when the assembly welding begins, the driving member 22 is actuated to apply force to the connecting end of the clamping arm 23, causing the clamping arm 23 to rotate to a clamping posture, with the swinging end located above the air-conditioning frame. At the same time, the clamping head 24 is moved to the clamping position under the action of the linkage assembly and fits against the top surface of the air-conditioning frame, thereby pressing the air-conditioning frame to limit displacement. After the assembly welding is completed, the driving member 22 reversely drives the clamping arm 23 to switch to an avoidance posture so that the swinging end leaves the space above the air-conditioning frame. At the same time, the linkage assembly drives the clamping head 24 to move synchronously to the avoidance position. At this time, the clamping head 24 completely avoids the removal trajectory of the air-conditioning frame, making it convenient for the air-conditioning frame to be lifted and removed from the workbench 1.

[0033] In some embodiments, see Figure 4A hinge shaft 211 for rotating the clamping arm 23 is fixedly provided on the hinge support 21. The linkage assembly includes a first gear 251, a second gear 252 and a rack 253. Among them, the first gear 251 is fixedly provided on the hinge shaft 211. The second gear 252 is rotatably provided on the clamping arm 23 and meshes with the first gear 251. The rack 253 is slidably provided on the clamping arm 23 along the length of the clamping arm 23 and meshes with the second gear 252. The rack 253 has a pushing portion 254 at one end facing the clamping head 24.

[0034] When the clamping arm 23 switches from the avoidance posture to the clamping posture, the first gear 251 and the second gear 252 transmit kinetic energy to the rack 253, so that the rack 253 pushes the clamping head 24 from the avoidance position to the clamping position through the pushing portion 254 and is fixed at the clamping position.

[0035] Specifically, a second sliding groove 231 is opened on the clamping arm 23 along the length direction, and a second slider 2531 suitable for sliding connection with the second sliding groove 231 is fixedly connected to the rack 253, thereby ensuring the stability of the rack 253 when moving on the clamping arm 23.

[0036] At the start of assembly welding, the clamping arm 23 switches from the avoidance position to the clamping position, controlled by the driver 22. As the clamping arm 23 rotates, the first gear 251 remains stationary along with the hinge shaft 211, allowing the second gear 252 to rotate with the clamping arm 23 while pushing the rack 253 toward the clamping head 24. The pushing portion 254 of the rack 253 acts on the clamping head 24, moving it from the avoidance position to the clamping position. When assembly welding is complete, the clamping arm 23 switches in the opposite direction, and the second gear 252 acts in the opposite direction, retracting the rack 253. The clamping head 24 is released by the pushing portion 254 and, under its own elastic force, moves from the clamping position to the avoidance position.

[0037] In some embodiments, see Figure 4 The pushing portion 254 has a pushing inclined surface 2541 at one end facing the clamping head 24 , and the clamping head 24 has a matching inclined surface 241 , and the pushing inclined surface 2541 abuts against the matching inclined surface 241 .

[0038] When the clamping arm 23 switches from the avoidance posture to the clamping posture, the pushing inclined surface 2541 pushes the clamping head 24 from the avoidance position to the clamping position through the matching inclined surface 241 .

[0039] When the clamping arm 23 switches from the avoidance posture to the clamping posture, the pushing portion 254 of the rack 253 moves, so that the pushing inclined surface 2541 abuts against the matching inclined surface 241 on the clamping head 24. The interaction between the inclined surfaces generates a component force, thereby pushing the clamping head 24 from the avoidance position to the clamping position.

[0040] In some embodiments, see Figure 2 and Figure 4 The clamping head 24 includes a sliding portion 242 and a pressing portion 243. The sliding portion 242 is slidably arranged on the clamping arm 23. The pressing portion 243 is ball-hinged on the sliding portion 242.

[0041] The pressing part 243 is connected to the sliding part 242 through a ball joint, and can adaptively rotate with the inclination angle of the top surface of the air-conditioning frame to ensure that the pressing part 243 is in full contact with the top surface of the air-conditioning frame, avoiding local compression caused by single-point contact, and enhancing stability during clamping.

[0042] It should be noted that the mating slope 241 is provided on the sliding portion 242. The swinging end of the clamping arm 23 has a guide portion 232 adapted for sliding engagement with the sliding portion 242. The guide portion 232 has a notch 2321 for the push portion 254 to enter and exit. The movement direction of the sliding portion 242 is perpendicular to that of the push portion 254.

[0043] When the clamping head 24 is in the clamping position, the pushing portion 254 passes through the sliding portion 242 and extends into the notch 2321, causing the pushing inclined surface 2541 to disengage from the mating inclined surface 241. In this state, when the pressing portion 243 presses and secures the air conditioner frame, the sliding portion 242 is subjected to a reaction force from the pressing portion 243. However, since the pushing portion 254 passes through the sliding portion 242 and engages with the notch 2321, the position of the sliding portion 242 is locked by the pushing portion 254, preventing it from moving. This ensures the stability of the sliding portion 242 and the stability of the clamping of the air conditioner frame.

[0044] In some embodiments, see Figure 2 and Figure 4 A spring 26 is provided between the clamping head 24 and the clamping arm 23. When the clamping arm 23 switches from the clamping posture to the avoidance posture, the spring 26 pushes the clamping head 24 to move from the clamping position to the avoidance position.

[0045] Specifically, the spring 26 is sleeved on the sliding portion 242, and the two ends of the spring 26 are respectively fixedly connected to the sliding portion 242 and the guide portion 232. The spring 26 can provide an elastic driving force to the clamping head 24 to move from the clamping position to the avoidance position, so that the clamping head 24 has elastic freedom to move from the clamping position to the avoidance position.

[0046] In some embodiments, see Figure 2 and Figure 3 The driving member 22 is a first oil cylinder, the cylinder body of the first oil cylinder is hinged to the workbench 1, and the piston rod of the first oil cylinder is hinged to the connecting end of the clamping arm 23.

[0047] The piston rod of the first oil cylinder is hingedly connected to the connection end of the clamping arm 23. This provides sufficient thrust to drive the clamping arm 23 to press against the air conditioner frame. This thrust is stable and can resist the reaction force caused by welding deformation. The first oil cylinder can maintain the clamping arm 23's clamping posture in the face of the expansion stress generated during welding of the air conditioner frame, ensuring the stable position of the air conditioner frame.

[0048] In some embodiments, see Figure 2 The guide structure includes a guide groove 11 and a docking portion 421. The guide groove 11 is provided on the workbench 1. The docking portion 421 is fixedly mounted on the movable end and slidably embedded in the guide groove 11, so that the movable end has the freedom to move along the extension direction of the guide groove 11. The guide groove 11 extends from bottom to top, away from the workbench 1, so that when the fixed end moves upward, the movable end moves synchronously along the guide groove 11 and drives the clamping member 2 to move away from the workbench 1.

[0049] Specifically, the guide grooves 11 correspond to the clamping members 2 on a one-to-one basis, and the guide grooves 11 are provided on the supporting portion 13 .

[0050] The guide groove 11 extends from bottom to top and back to the workbench 1, and the docking part 421 is slidably connected to the guide groove 11, so that the fixed end of the connecting part 4 rises with the lifting part 3, and the movable end of the connecting part 4 moves horizontally toward the outside of the workbench 1 along with the docking part 421, so that the movable end drives the clamping part 2 to avoid the removal trajectory of the air-conditioning frame.

[0051] The cooperation between the guide groove 11 and the docking portion 421 limits the unnecessary movement of the mobile end, ensures that the clamping member 2 moves synchronously along the preset trajectory, avoids the avoidance position deviation caused by shaking, and ensures that there is no interference in all directions during the removal of the air conditioner frame.

[0052] In some embodiments, see Figure 2 and Figure 3 The connecting member 4 includes a fixed portion 41 and a connecting portion 42. The fixed portion 41 is fixedly mounted on the lifting end and forms the fixed end. One end of the connecting portion 42 is laterally slidably connected to the fixed portion 41, and the other end is vertically slidably connected to the clamping member 2. The end of the connecting portion 42 facing away from the fixed portion 41 forms the movable end.

[0053] Specifically, the hinge support 21 has a dovetail groove opened in the vertical direction, and the connecting part 42 has a dovetail block suitable for sliding connection with the dovetail groove, so that the connecting part 42 and the hinge support 21 can achieve vertical sliding connection, and the connecting part 42 can also drive the hinge support 21 to achieve lateral movement.

[0054] During operation, when the lifting end is lifted, the fixed part 41 acts as a fixed end and rises with the lifting end to provide vertical support for the air-conditioning frame. One end of the connecting part 42 slides laterally with the fixed part 41 to allow horizontal displacement. The other end of the connecting part 42 acts as a movable end and guides the clamping part 2 to move under the action of the guide structure to avoid the removal of the air-conditioning frame.

[0055] In some embodiments, see Figure 2 and Figure 3 The upper surface of the fixing portion 41 is connected to a backing plate 411 via bolts. The backing plate 411 is used to contact and support the air conditioner frame. After long-term use, the surface of the backing plate 411 will inevitably wear out, and the worn flatness may not meet the requirements for air conditioner frame welding. In this case, the staff can remove the backing plate 411 and re-grind it to restore the flatness of the backing plate 411 surface, thereby ensuring the stability of the air conditioner frame when placed on the backing plate 411 for welding and the flatness of the air conditioner frame during assembly welding.

[0056] In some embodiments, see Figure 3 The lifting member 3 is a second oil cylinder that is vertically telescopic. The cylinder body of the second oil cylinder is fixedly connected to the workbench 1, and the end of the piston rod of the second oil cylinder forms a lifting end.

[0057] Specifically, the second oil cylinder is disposed in the accommodation space of the support portion 13 .

[0058] The second cylinder, acting as lifting element 3, delivers sufficient lifting force to lift heavy air conditioner frames. The piston rod of the second cylinder extends and retracts smoothly, allowing for gentle lifting of the frame, preventing cracking of welded joints or deformation of the frame due to impact. For large frames welded from multiple alloy profiles, the second cylinder provides stable support, ensuring the frame remains level during lifting. The hydraulic system precisely controls the extension of the piston rod of the second cylinder, allowing the frame to be lifted to a height suitable for the hoist, facilitating hoist operation.

[0059] In summary, the subway air-conditioning frame assembly welding platform provided by the present invention is different from the prior art in that, before welding, the clamping member 2 is in an initial position close to the edge of the workbench 1, firmly pressing the air-conditioning frame onto the workbench 1, thereby ensuring that the air-conditioning frame will not be displaced due to vibration or operating force during welding, and providing a stable foundation for welding accuracy. After welding is completed, the lifting member 3 is started, and the lifting end is lifted upward, driving the air-conditioning frame to rise synchronously. At this time, the movable end of the connecting member 4 moves under the action of the guide structure, so that the movable end slides in a direction away from the air-conditioning frame while rising, thereby driving the clamping member 2 to translate in a direction away from the air-conditioning frame, and finally forming a sufficient distance between the clamping member 2 and the air-conditioning frame. Compared with the traditional clamping mechanism that is fixed to the edge of the workbench and causes spatial interference with the hoisted air-conditioning frame, the outward avoidance design of the clamping member 2 in the present invention can ensure that when the air-conditioning frame is lifted by the lifting equipment, the air-conditioning frame will not interfere with or collide with the clamping member 2.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Metro air conditioning frame welding platform, characterized by: include: A workbench (1) for placing an air conditioning frame; A plurality of clamping members (2) are arranged at intervals around the workbench (1), and are used to cooperate with each other to fix the air-conditioning frame, and each of the clamping members (2) has the freedom to move toward and away from the workbench (1); and A plurality of lifting members (3) are arranged on the workbench (1) and correspond one-to-one to the plurality of clamping members (2); each of the lifting members (3) has a lifting end for lifting the air-conditioning frame; Each of the lifting ends is connected to the corresponding clamping member (2) via a connecting member (4), the connecting member (4) has a fixed end connected to the lifting end, and a movable end connected to the clamping member (2), and a guide structure is provided between each movable end and the workbench (1); When the lifting end lifts the air conditioning frame, the fixed end rises synchronously, and the movable end drives the clamping member (2) to move back toward the workbench (1) under the action of the guide structure to avoid the removal trajectory of the air conditioning frame.

2. The subway air conditioning frame welding platform according to claim 1, characterized in that: The clamping member (2) comprises: A hinge support (21) is arranged to slide transversely outside the workbench (1) and has the freedom to move toward and away from the workbench (1); the movable end is connected to the hinge support (21); A clamping arm (23) is hinged to the hinge support (21), and has two ends, respectively, a swing end and a connecting end; the clamping arm (23) has a clamping posture in which the swing end is located above the air-conditioning frame, and a avoiding posture in which the swing end avoids the space above the air-conditioning frame; the connecting end is transmission-connected to a driving member (22) so that the clamping arm (23) switches between the clamping posture and the avoiding posture; and A clamping head (24) is slidably arranged at the swing end of the clamping arm (23); the clamping head (24) has a clamping position and an escape position, and has elastic freedom to move from the clamping position to the escape position; The clamping head (24) is connected to the clamping arm (23) via a linkage assembly, so that when the clamping arm (23) switches to the avoidance posture, the linkage assembly drives the clamping head (24) to move synchronously to the avoidance position; When the clamping arm (23) is in the clamping posture and the clamping head (24) is in the clamping position, the clamping head (24) can abut against the top surface of the air conditioning frame to limit the movement of the air conditioning frame relative to the workbench (1); When the clamping arm (23) is in the avoidance posture and the clamping head (24) is in the avoidance position, the clamping head (24) can avoid the removal trajectory of the air conditioning frame.

3. The subway air conditioning frame welding platform according to claim 2, characterized in that: A hinge shaft (211) for the clamping arm (23) to rotate is fixedly provided on the hinge support (21), and the linkage assembly comprises: A first gear (251) is fixedly arranged on the hinge shaft (211); A second gear (252) is rotatably mounted on the clamping arm (23) and meshes with the first gear (251); and a rack (253) slidably disposed on the clamping arm (23) along the length of the clamping arm (23) and meshing with the second gear (252); an end of the rack (253) facing the clamping head (24) has a pushing portion (254); When the clamping arm (23) switches from the avoidance posture to the clamping posture, the first gear (251) and the second gear (252) transmit kinetic energy to the rack (253), so that the rack (253) pushes the clamping head (24) from the avoidance position to the clamping position through the pushing portion (254) and is fixed at the clamping position.

4. The subway air conditioning frame welding platform according to claim 3, characterized in that: One end of the pushing portion (254) facing the clamping head (24) has a pushing inclined surface (2541), and the clamping head (24) has a matching inclined surface (241), and the pushing inclined surface (2541) abuts against the matching inclined surface (241); When the clamping arm (23) switches from the avoidance posture to the clamping posture, the pushing inclined surface (2541) pushes the clamping head (24) to move from the avoidance position to the clamping position via the matching inclined surface (241).

5. The subway air conditioning frame assembly welding platform according to claim 2, characterized in that: The clamping head (24) comprises: a sliding portion (242) slidably disposed on the clamping arm (23); The pressing portion (243) is ball-hinged on the sliding portion (242).

6. The subway air conditioning frame assembly welding platform according to claim 2, characterized in that: A spring (26) is provided between the clamping head (24) and the clamping arm (23); When the clamping arm (23) switches from the clamping posture to the avoidance posture, the spring (26) pushes the clamping head (24) to move from the clamping position to the avoidance position.

7. The subway air conditioning frame assembly welding platform according to claim 2, characterized in that: The driving member (22) is a first oil cylinder, a cylinder body of the first oil cylinder is hinged to the workbench (1), and a piston rod of the first oil cylinder is hinged to the connecting end.

8. The subway air conditioning frame welding platform according to claim 1, characterized in that: The guide structure comprises: A guide groove (11) is provided on the workbench (1); and A docking portion (421) is fixedly arranged on the movable end and slidably embedded in the guide groove (11) so that the movable end has the freedom to move along the extension direction of the guide groove (11); The guide groove (11) extends from bottom to top away from the workbench (1), so that when the fixed end moves upward, the movable end moves synchronously along the guide groove (11) and drives the clamping member (2) to move away from the workbench (1).

9. The subway air conditioning frame assembly welding platform according to claim 1, characterized in that: The connecting member (4) comprises: A fixing portion (41) is fixedly arranged on the lifting end; the fixing portion (41) forms the fixing end; The connecting portion (42) has one end connected to the fixed portion (41) in a transverse sliding manner and the other end connected to the clamping member (2) in a vertical sliding manner; the end of the connecting portion (42) facing away from the fixed portion (41) forms the movable end.

10. The subway air conditioning frame assembly welding platform according to claim 1, characterized in that: The lifting member (3) is a second oil cylinder that is telescopic in a vertical direction. The cylinder body of the second oil cylinder is fixedly connected to the workbench (1), and the end of the piston rod of the second oil cylinder forms the lifting end.

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