Auxiliary equipment for welding cabinet body of switch cabinet

Abstract

The invention relates to auxiliary welding equipment for a cabinet body of a switch cabinet. The auxiliary welding equipment is characterized in that an upper platform is arranged at the upper end of a rack; the lower rotating table is arranged above the upper platform; a spindle hole is formed in the center of the upper platform, a spindle is rotatably mounted in the spindle hole, the upper end of the spindle is fixedly connected with the lower end of the lower rotary worktable, and the lower end of the spindle is in driving connection with a worktable rotary driving mechanism; the upper movable working platform is arranged above the lower rotary working platform, and the lower end of the upper movable working platform is in linear sliding connection with the upper end of the lower rotary working platform; the upper moving working platform is in driving connection with the working platform moving driving mechanism; the inner positioning mechanism is used for realizing adsorption positioning of two side plates of the switch cabinet, a bottom cross beam of the switch cabinet, a front vertical beam of the switch cabinet and a rear vertical beam of the switch cabinet; the top positioning mechanism is used for positioning the switch cabinet top plate; the outer clamping mechanism is used for clamping and fixing the switch cabinet on the left side and the right side and is composed of two sets of outer pressing mechanisms, and the two sets of outer pressing mechanisms are arranged outside side plates on the two sides of the switch cabinet. According to the welding fixture, a good positioning and clamping effect can be achieved, welding deformation is avoided, and the welding efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of switchgear welding equipment, and specifically relates to an auxiliary equipment for welding switchgear cabinets. Background Technology

[0002] In recent years, the output value growth rate of my country's electrical appliance industry has remained at approximately 10%-15%. The market capacity of the electrical appliance industry is closely linked to the development of the power, industrial, real estate, and telecommunications sectors. Coupled with the structural adjustment of demand for low-voltage electrical equipment and potential demand in the international market, this provides ample room for the future development of the switchgear cabinet welding fixture industry. Common high and low voltage switchgear is generally constructed by welding front and rear frames, left and right side panels, and a top plate. Cabinet doors are installed on the front and rear frames for internal structure installation, repair, and maintenance. These equipment cabinets are often quite large, making welding difficult and prone to errors. In existing technology, the positioning of the side panels and the beams constituting the front and rear frames mainly relies on manual positioning or positioning using a platform and fixed baffles. This operation is complex, labor-intensive, and difficult to effectively control welding deformation, making it hard to guarantee the accuracy of the manufactured cabinet frame. Furthermore, the fixed connection between the baffle fixtures and the platform makes it difficult to lift the welded cabinet, increasing operation time and labor costs. With the continuous increase in labor costs, automated production is urgently needed. Therefore, by designing a switchgear welding fixture, the problems of high labor intensity, low efficiency, and unstable welding quality for workers have been solved, better meeting production needs and yielding good social and economic benefits. Summary of the Invention

[0003] This invention addresses the issue of providing auxiliary equipment for welding switch cabinet bodies, which can reduce labor intensity, improve welding efficiency, and ensure product welding quality.

[0004] The above-mentioned objective of this invention is achieved through the following technical solution: A switch cabinet welding auxiliary device includes a frame, a lower rotary worktable, an upper moving worktable, a worktable rotation drive mechanism, a worktable moving drive mechanism, an inner positioning mechanism, a cabinet top plate positioning mechanism, and an outer clamping mechanism. The upper end of the frame is provided with an upper platform; the lower rotary worktable is provided above the upper platform of the frame; a spindle hole is provided in the center of the upper platform, and a vertically arranged spindle is rotatably supported in the spindle hole by bearings. The upper end of the spindle is fixedly connected to the lower end of the lower rotary worktable, and the lower end of the spindle is the rotary power input end, which forms a drive connection with the worktable rotary drive mechanism. The upper moving work platform is located above the lower rotary work platform, and the lower end of the upper moving work platform is connected to the upper end of the lower rotary work platform through two sets of parallel linear guide rails; the upper moving work platform is driven by the worktable moving drive mechanism. The internal positioning mechanism is used to achieve adsorption positioning of the two side panels, the bottom crossbeam, the front upright beam, and the rear upright beam of the switch cabinet; the internal positioning mechanism includes multiple sets of positioning components and positioning component mounting brackets, the positioning component mounting brackets being cubic frames with all three dimensions smaller than the internal cavity dimensions of the switch cabinet; the positioning component mounting brackets are fixed to the upper end of the upper moving work platform; The top positioning mechanism is used to position the top plate of the switch cabinet; the top positioning mechanism is located above the mounting platform of the positioning component mounting bracket. The external clamping mechanism is used to clamp and fix the switch cabinet on both the left and right sides; the external clamping mechanism consists of two sets of external pressing mechanisms, which are set on the outside of the two side plates of the switch cabinet.

[0005] Furthermore, the workbench rotation drive mechanism includes a rotary servo stepper motor, a driving pulley, a driven pulley, a worm, a worm wheel, and a rotation angle sensor; the driving pulley is installed at the output end of the rotary servo stepper motor, the driven pulley is coaxially fixed on the worm, and the driving pulley and the driven pulley are connected by a transmission belt; the worm is supported by bearings on a worm bracket at the lower end of the upper platform, and the worm wheel is coaxially fixed at the lower end of the main shaft, with the worm and worm wheel meshing.

[0006] Furthermore, the workbench moving drive mechanism can adopt a screw and nut structure driven by a motor, including a moving servo motor, a screw, and a nut block; the screw is installed between two sets of linear guide pairs through screw supports set at both ends, and one end of the screw is driven and connected to the output end of the moving servo motor; the nut block meshes with the screw through a central threaded hole, and the upper end of the nut block is fixedly connected to the lower end of the upper moving work platform.

[0007] Furthermore, the positioning component mounting frame is composed of a base plate, multiple vertical beams, and multiple upper horizontal beams connected together, with the mounting platform welded to the upper end of the upper horizontal beams; the positioning component consists of a positioning cylinder, a cylinder bracket, and an electromagnetic suction head; the positioning cylinder is mounted on the cylinder bracket, and the electromagnetic suction head is mounted on the cylinder rod end of the positioning cylinder; positioning components are provided in four directions (front, back, left, and right) on the base plate and the mounting platform above the positioning component mounting frame, with the electromagnetic suction head end of the positioning component facing outwards.

[0008] Furthermore, the top positioning mechanism includes a positioning table, two positioning protrusions fixed on the positioning table, and equal-height support columns set at the four corners of the mounting platform. One of the protrusions is a circular protrusion, and the other is a flattened oval protrusion. The top plate of the switch cabinet is supported on the four support columns to achieve vertical positioning. The two reserved holes on the top of the switch cabinet are fitted with the two protrusions to achieve horizontal positioning of the top plate of the switch cabinet.

[0009] Furthermore, the external clamping mechanism includes a clamping support frame, a clamping drive cylinder, a power transmission rod assembly, and two sets of clamping execution units with identical structures. The clamping support frame adopts a chair-shaped bracket, with its backrest composed of two columns at both ends. The clamping support frame is fixed above the upper movable worktable with the backrest close to the side panel of the switch cabinet. The clamping drive cylinder is installed on the upper end of the seat of the clamping support frame with the cylinder rod end facing the side panel of the switch cabinet. The transmission rod assembly consists of a straight rod and vertical guide rails vertically fixed to both ends of the straight rod. Vertical roller grooves with outward slots are provided on the vertical guide rails at both ends. The assembly is positioned above the seat of the clamping support frame. The middle of the straight rod of the transmission rod assembly is vertically and fixedly connected to the cylinder rod end of the clamping drive cylinder. The outer ends of the two clamping actuators are each slidably engaged with the vertical roller grooves on the vertical guide rails at both ends via two rollers. The inner ends of the two clamping actuators are provided with upper and lower clamping arms. When the cylinder rod of the clamping drive cylinder is in the extended position, the two sets of clamping actuators are in clamping contact with the upper and lower parts of the corresponding side plate of the switch cabinet via the two clamping arms. When the cylinder rod of the clamping drive cylinder is in the retracted position, the clamping arms of the two sets of clamping actuators disengage from the upper and lower parts of the corresponding side plate of the switch cabinet.

[0010] Furthermore, the clamping actuation unit consists of two sets of clamping components arranged symmetrically at the top and bottom; each set of clamping components includes a swing arm, a support arm, and the clamping arm; the clamping arm is a bent arm with a certain included angle; one end of the swing arm is connected to a roller through a wheel axle, and the other end of the swing arm is hinged to the corner of the clamping arm through a hinge shaft; the middle part of the swing arm is hinged to one end of the support arm through a hinge shaft; one end of the clamping arm and the other end of the support arm are respectively hinged to the extension of the corresponding side column of the chair back through a hinge shaft; the other end of the clamping arm is provided with a clamping action surface that contacts the side plate.

[0011] The advantages and positive effects of this invention are as follows: 1. The switch cabinet welding auxiliary equipment of this invention adopts a combination of top positioning and internal positioning of the cabinet, combined with external side clamping, to achieve a better positioning and clamping effect. It can effectively reduce welding deformation and prevent unevenness of the side plates and front and rear frames after welding, thus meeting the working requirements of welding robots. This reduces the amount of correction work, resulting in reduced working hours and increased labor productivity. It can ensure a good welding position, excellent weld formation, significantly reduced process defects, and improved welding efficiency.

[0012] 2. This invention takes into account the deformation problem that occurs during the welding process due to the excessive size of the switch cabinet structure. It selects internal support for positioning, which makes the positioning more accurate and provides a solid guarantee for product quality. This positioning method has no impact on the lifting out of the parts after processing, and effectively solves the problem of difficult lifting out of the switch cabinet after welding. It has a high degree of automation and reduces the labor intensity of workers.

[0013] 3. This invention uses mechanical devices to perform heavy tasks such as positioning and clamping of assembly parts, as well as workpiece rotation and linear motion, which greatly reduces labor intensity. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the switch cabinet according to an embodiment of the present invention; Figure 2 This is a front view of the switch cabinet welding auxiliary equipment of the present invention; Figure 3 This is a top view of the switch cabinet welding auxiliary equipment of the present invention; Figure 4 This is a left view of the switch cabinet welding auxiliary equipment of the present invention; Figure 5 This is a perspective view of the switch cabinet welding auxiliary equipment of the present invention; Figure 6 This is an installation diagram of the rotary worktable, the worktable rotation drive mechanism, and the worktable movement drive mechanism of the present invention. Figure 7 This is a structural diagram of the internal positioning mechanism of the cabinet welding auxiliary equipment of the present invention for positioning the cabinet; Figure 8 This is a structural diagram of the positioning component in the internal positioning mechanism of the present invention; Figure 9 This is a structural diagram of the external clamping mechanism of the present invention. Detailed Implementation

[0015] The structure of the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that these embodiments are descriptive and not limiting.

[0016] The switch cabinet 1 used in the switch cabinet welding auxiliary equipment of this invention mainly consists of left and right side panels, a bottom front crossbeam, a bottom rear crossbeam, a top plate 1-1, a front upright beam, and a rear upright beam. (See attached image.) Figure 1 In this embodiment, there is one front upright beam and two rear upright beams. For the specific structure of the switch cabinet welding auxiliary equipment, please refer to [link to relevant documentation]. Figure 2 - Figure 9The invention features a frame 6, a lower rotary worktable 5, an upper moving worktable 4, a worktable rotation drive mechanism 7, a worktable moving drive mechanism 10, an inner positioning mechanism 2, a cabinet top plate positioning mechanism 11, and an outer clamping mechanism 3.

[0017] The frame consists of support legs and an upper platform 6-1 fixed on the support legs.

[0018] The lower rotary worktable is located above the upper platform of the frame. A spindle hole 8 is provided in the center of the upper platform. A vertically arranged spindle is rotatably supported in the spindle hole by bearings. The upper end of the spindle is fixedly connected to the lower end of the lower rotary worktable. The lower end of the spindle is the rotational power input end, which forms a drive connection with the worktable rotation drive mechanism.

[0019] The rotary drive mechanism of this invention requires precise control of the rotation angle during rotation and must be capable of intermittent motion. The rotary drive mechanism could consider using Geneva wheels, ratchet wheels, or incomplete gears. However, while ratchet wheels offer easy angle adjustment, they suffer from impact issues; Geneva wheels, although providing flexible impact, have difficulty adjusting their angle; and incomplete gears, due to their rigid impact, are generally used for applications with very low loads. Therefore, all three mechanisms have drawbacks. Considering all factors, this invention preferably employs a stepper motor combined with a self-locking worm gear drive and an angle sensor for control of the rotary drive mechanism. The stepper motor controls the angle, the worm gear drive self-locks to prevent damage to the motor due to the inertia of the rotating worktable, and finally, a sensor is used for feedback adjustment of the angle. The sensor is mounted on the stepper motor's shaft. The worm gear drive has a relatively large allowable transmission ratio range; compared to bevel gear drives, the worm gear drive has lower transmission noise and less vibration. Specifically: The rotary drive mechanism of the worktable includes a rotary servo stepper motor 7-1, a driving pulley 7-2, a driven pulley 7-3, a worm gear 7-4, a worm wheel 7-5, and an angle sensor, which is not shown in the attached drawings. The driving pulley is installed at the output end of the rotary servo stepper motor, and the driven pulley is coaxially fixed to the worm gear. The driving pulley and the driven pulley are connected by a transmission belt to achieve single-stage speed reduction. The worm gear is supported by bearings on a worm gear bracket at the lower end of the upper platform, and the worm wheel is coaxially fixed to the lower end of the main shaft. The worm gear and the worm wheel mesh.

[0020] The upper moving work platform is located above the lower rotary work platform, and the lower end of the upper moving work platform is connected to the upper end of the lower rotary work platform through two sets of parallel linear guide rails 9.

[0021] The workbench movement drive mechanism can adopt a motor-driven lead screw and nut structure, specifically including a mobile servo motor 10-1, a lead screw 10-2, and a nut block 10-3. The lead screw is mounted between two sets of linear guide rails via lead screw supports at both ends, and one end of the lead screw is driven and connected to the output end of the mobile servo motor. The nut block engages with the lead screw through a central threaded hole, and the upper end of the nut block is fixedly connected to the lower end of the upper moving work platform. This workbench movement drive mechanism is used to avoid interference between the welding robot and the cabinet when rotating the switch cabinet.

[0022] The internal positioning mechanism is used to achieve adsorption positioning of the side panels, bottom crossbeam, front upright beam, and rear upright beam of the switchgear. The internal positioning mechanism includes multiple positioning components 2-2 and a positioning component mounting frame 2-1. The positioning component mounting frame is a cubic frame with all three dimensions smaller than the internal cavity size of the switchgear. In this invention, the positioning component mounting frame is composed of a base plate, multiple upright beams, and multiple upper crossbeams connected together, with a mounting platform welded to the upper end of each upper crossbeam. The positioning component consists of a positioning cylinder 2-2-2, a cylinder bracket 2-2-3, and an electromagnetic suction head 2-2-1. The positioning cylinder is mounted on the cylinder bracket, and the electromagnetic suction head is mounted on the cylinder rod end of the positioning cylinder. Positioning components are arranged in four directions (front, back, left, and right) on the base plate and the mounting platform above the positioning component mounting frame, with the electromagnetic suction head end of the positioning components facing outwards. The positioning components facing the left and right sides are used to adsorb and position the left and right side panels of the switchgear. The forward-facing lower positioning component is used to attach and position the lower connection points of the front bottom crossbeam and front vertical beam of the switchgear. The rearward-facing lower positioning component is used to attach and position the lower connection points of the rear bottom crossbeam and rear vertical beam of the switchgear. The forward-facing upper positioning component is used to attach and position the connection point between the upper end of the front vertical beam and the top plate of the switchgear. The rearward-facing upper positioning component is used to attach and position the connection point between the upper end of the rear vertical beam and the top plate of the switchgear.

[0023] The top positioning mechanism is used to position the top plate of the switchgear, providing the foundation for the overall positioning of the switchgear. The top positioning mechanism is located above the mounting platform of the positioning component mounting bracket and includes a positioning table 11-2, two positioning bosses fixed to the positioning table, and equal-height support columns 11-1 located at the four corners of the mounting platform. One boss is a circular boss 11-3, and the other is a flattened oval boss 11-4. The top plate of the switchgear is supported on the four support columns, achieving vertical positioning. Two pre-drilled holes on the top of the switchgear engage with the two bosses to achieve horizontal positioning of the top plate.

[0024] The external clamping mechanism is used to clamp and fix the switchgear on both the left and right sides. The external clamping mechanism consists of two sets of external pressing mechanisms, which are located on the outside of the side panels of the switchgear. These two sets of external pressing mechanisms reinforce and fix the entire switchgear through mutual pressure. The external pressing mechanism adopts a linkage mechanism with force amplification and self-locking functions, using a cylinder as the input end of the linkage mechanism to automate the external clamping mechanism and meet all performance requirements for a clamping mechanism. Specifically, the external pressing mechanism includes a pressing support frame 3-1, a pressing drive cylinder 3-2, a power transmission rod group, and two sets of identical pressing execution units. The pressing support frame adopts a chair-shaped bracket, with its backrest composed of two columns at both ends. The pressing support frame is fixed above the upper moving worktable with its backrest close to the side panel of the switchgear. The pressing drive cylinder is installed on the upper end of the seat of the pressing support frame with its cylinder rod end facing the side panel of the switchgear. The transmission rod assembly consists of a straight rod 3-4 and vertical guide rails 3-3 fixed vertically to both ends of the straight rod. Vertical roller grooves 3-3-1 with outward slots are provided on the vertical guide rails at both ends. The transmission rod assembly is positioned above the seat of the clamping support frame. The middle part of the straight rod of the transmission rod assembly is vertically and fixedly connected to the cylinder rod end of the clamping drive cylinder. The outer ends of each of the two clamping actuators slide in contact with the vertical roller grooves on the vertical guide rails at both ends via two rollers. The inner ends of the two clamping actuators are provided with upper and lower clamping arms. When the cylinder rod of the clamping drive cylinder is in the extended position, the two sets of clamping actuators are in clamping contact with the upper and lower parts of the corresponding side plate of the switchgear via the two clamping arms. When the cylinder rod of the clamping drive cylinder is in the retracted position, the clamping arms of the two sets of clamping actuators disengage from the upper and lower parts of the corresponding side plate of the switchgear.

[0025] In this invention, the clamping actuation unit consists of two sets of clamping components arranged symmetrically at the top and bottom. Each set of clamping components includes a swing arm 3-7, a support arm 3-6, and the aforementioned clamping arm 3-5. The clamping arm is a bent arm with a certain included angle (acute angle). One end of the swing arm is connected to a roller 3-8 via an axle, and the other end of the swing arm is hinged to the corner of the clamping arm via a hinge shaft. The middle part of the swing arm is hinged to one end of the support arm via a hinge shaft. One end of the clamping arm and the other end of the support arm are respectively hinged to the extended part of the corresponding side column of the chair back via hinge shafts. The other end of the clamping arm is provided with a clamping surface 3-5-1 that contacts the side plate.

[0026] The advantages of using a clamping assembly are as follows: Because the linkage mechanism has significant mechanical benefits when some adjacent components are nearly collinear, it can greatly increase the clamping force, improve clamping reliability, and ensure that the side panel parts of the switch cabinet to be welded remain in a stable and reliable clamped state during processing. It also enables rapid clamping. With this press assembly, when the cylinder rod of the clamping drive cylinder is in the extended position, the workpiece is clamped. At this time, the hinge centers of the swing arm and roller, the swing arm and support arm, and the swing arm and clamping arm are all on a straight line. This position becomes a dead point, ensuring high reliability of the clamping mechanism in clamping the workpiece.

[0027] Instructions for use of the welding auxiliary equipment for this switch cabinet: The auxiliary welding equipment for this switchgear cabinet first positions the top plate of the switchgear using a top positioning mechanism. Then, the two side panels are vertically positioned relative to each other on either side of the lower end of the top plate, aligning them with the front and rear edges of the top plate and with their corresponding side panels on the left and right sides. Next, the lower crossbeam and front upright beam forming the front frame of the cabinet are spliced ​​to the front of the two side panels, aligning them with the side panels and top plate on the front side. Simultaneously, the lower crossbeam and rear upright beam forming the rear frame of the cabinet are spliced ​​to the rear of the two side panels, aligning them with the side panels and top plate on the rear side. After the side panels, front frame, and rear frame are all spliced, multiple positioning components are activated. The left side panel is attracted by the electromagnetic suction head facing left, the right side panel by the electromagnetic suction head facing right, and the front panel by the electromagnetic suction head facing forward. The frame's crossbeams and vertical beams are connected by magnetic attraction; the rearward-facing electromagnetic suction head is then used to connect the rear frame's crossbeams and vertical beams. Next, the external clamping mechanisms on both sides are activated, clamping the outer surfaces of the left and right side panels respectively, thus securing the entire cabinet. The upper moving work platform is then moved to a position away from the welding robot by the worktable movement drive mechanism. The lower rotary worktable and its upper structure are then rotated to a position where the weld seam is closer to the welding robot by the rotary drive mechanism. The relative position of the weld seam and the welding robot is adjusted by the worktable movement drive mechanism. Once in position, the welding robot performs welding, and then the rotary drive mechanism and the worktable movement drive mechanism work together to weld all the weld seams on the switchgear. After welding is complete, the external clamping mechanisms on both sides are released, and the internal magnetic attraction is disengaged. The switchgear is then lifted upwards by hoisting equipment for easy removal.

[0028] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A switchgear cubicle welding aid, characterised in that: The rack, the lower rotary workbench, the upper movable workbench, the workbench rotary drive mechanism, the workbench movable drive mechanism, the inner positioning mechanism, the cabinet top plate positioning mechanism and the outer clamping mechanism are provided. The upper end of the rack is provided with an upper platform; the lower rotary workbench is arranged above the upper platform of the rack; a main shaft hole is arranged at the center of the upper platform, a vertically arranged main shaft is rotatably supported in the main shaft hole through a bearing, the upper end of the main shaft is fixedly connected with the lower end of the lower rotary workbench, and the lower end of the main shaft is a rotary power input end and is drivingly connected with the workbench rotary drive mechanism. The upper movable workbench is arranged above the lower rotary workbench, the lower end of the upper movable workbench is connected with the upper end of the lower rotary workbench through two groups of parallel arranged straight linear guide rail pairs, and the upper movable workbench is drivingly connected with the workbench movable drive mechanism. The inner positioning mechanism is used for adsorbing and positioning the two side plates of the switch cabinet, the bottom cross beam of the switch cabinet, the front vertical beam of the switch cabinet and the rear vertical beam of the switch cabinet; the inner positioning mechanism comprises a plurality of positioning assemblies and a positioning assembly mounting stand, the positioning assembly mounting stand is a cuboid frame with three-dimensional dimensions smaller than the inner cavity size of the switch cabinet, and the positioning assembly mounting stand is fixed to the upper end of the upper movable workbench. The top positioning mechanism is used for positioning the top plate of the switch cabinet; the top positioning mechanism is arranged above the mounting table of the positioning assembly mounting stand. The outer clamping mechanism is used for clamping and fixing the switch cabinet on the left and right sides; the outer clamping mechanism comprises two groups of outer pressing mechanisms, and the two groups of outer pressing mechanisms are arranged outside the two side plates of the switch cabinet.

2. Switchgear cabinet welding aid according to claim 1, characterized in that: The workbench rotary drive mechanism comprises a rotary servo stepping motor, a driving pulley, a driven pulley, a worm, a worm wheel and an angle sensor; the driving pulley is mounted on the output end of the rotary servo stepping motor, the driven pulley is coaxially fixed on the worm, and the driving pulley and the driven pulley are connected through a transmission belt; the worm is supported on a worm support at the lower end of the upper platform through a bearing, the worm wheel is coaxially fixedly installed at the lower end of the main shaft, and the worm and the worm wheel are in meshing engagement.

3. Switchgear cabinet welding aid according to claim 1, characterized in that: The workbench movable drive mechanism can adopt a screw nut structure driven by a motor; the workbench movable drive mechanism comprises a movable servo motor, a lead screw and a nut block; the lead screw is installed between the two groups of straight linear guide rail pairs through lead screw supports arranged at two ends, one end of the lead screw is drivingly connected with the output end of the movable servo motor, and the nut block is in meshing engagement with the lead screw through a threaded hole in the center of the nut block.

4. Switchgear cabinet welding aid according to claim 1, characterized in that: The positioning assembly mounting stand is composed of a bottom plate, a plurality of vertical beams and a plurality of upper cross beams, the mounting table is welded to the upper end of the upper cross beam; the positioning assembly comprises a positioning cylinder, a cylinder support and an electromagnetic suction head; the positioning cylinder is mounted on the cylinder support, and the electromagnetic suction head is mounted on the cylinder rod end of the positioning cylinder; the positioning assemblies are arranged in four directions of front, back, left and right on the bottom plate of the positioning assembly mounting stand and the mounting table above, and the electromagnetic suction head end of the positioning assembly is outwardly arranged.

5. Switchgear cabinet welding aid according to claim 1, characterized in that: The top positioning mechanism comprises a positioning table, two positioning bosses fixed on the positioning table, and four equal-height supporting columns arranged at four corners of the mounting table, one of the bosses is a circular boss, and the other boss is a flat circular boss; the top plate of the switch cabinet is supported on the four supporting columns to limit the switch cabinet in the up-down direction, and two reserved holes on the top of the switch cabinet are embeddedly matched with the two bosses to limit the switch cabinet top plate in the horizontal direction.

6. Switchgear cabinet welding aid according to claim 1, characterized in that: The outer pressing mechanism comprises a pressing support frame, a pressing driving cylinder, a power transmission rod group, and two groups of pressing execution units with the same structure; the pressing support frame adopts a chair-shaped support, the back of the chair is formed by two upright columns arranged at two ends; the pressing support frame is fixed above the upper movable workbench with the back of the chair close to the side plate of the switch cabinet; the pressing driving cylinder is installed at the upper end of the seat of the pressing support frame with the cylinder rod end facing the side plate of the switch cabinet; the transmission rod group is composed of a straight rod and vertical guide rails fixed vertically at two ends of the straight rod; vertical roller grooves are arranged on the two vertical guide rails; the transmission rod group is arranged above the seat of the pressing support frame, and the middle part of the straight rod of the transmission rod group is vertically fixedly connected with the cylinder rod end of the pressing driving cylinder; the outer ends of the two pressing execution units are respectively slidably matched with the vertical roller grooves on the two vertical guide rails through two rollers; the inner ends of the two pressing execution units are provided with upper and lower pressing arms; when the cylinder rod of the pressing driving cylinder is in the extended position, the two groups of pressing execution units are in pressing contact with the upper and lower parts of the side plate of the corresponding side of the switch cabinet through the two pressing arms; when the cylinder rod of the pressing driving cylinder is in the retracted position, the pressing arms of the two groups of pressing execution units are separated from the upper and lower parts of the side plate of the corresponding side of the switch cabinet.

7. Switchgear cabinet welding aid according to claim 1, characterized in that: The pressing execution unit is composed of two groups of pressing assemblies arranged symmetrically up and down; each group of pressing assembly comprises a swing arm, an arm and the pressing arm; the pressing arm adopts a bent arm with a certain angle; one end of the swing arm is connected with the roller through an axle, the other end of the swing arm is hingedly connected with the corner part of the pressing arm through a hinge shaft, and the middle part of the swing arm is hingedly connected with one end of the arm through a hinge shaft; one end of the pressing arm and the other end of the arm are respectively hingedly connected with the outer extension part of the corresponding side upright column of the back of the chair through a hinge shaft, and the other end of the pressing arm is provided with a pressing surface in contact with the side plate.

Images