Large heat exchanger core assembling robot

Abstract

The invention relates to a large heat exchanger core assembly robot, and relates to the related technical field of heat exchanger assembly, the large heat exchanger core assembly robot comprises an adjusting support platform, a frame shaped like a Chinese character'hui ', a lifting assembly, a clamping piece, a hoop frame, a cleaning assembly, a trigger piece, a sliding rod, a locking assembly, a positioning assembly, an electric telescopic frame and a welding assembly. Manual welding is highly dependent on skills of operators, welding quality fluctuation is easily caused by experience difference of welders, sealing performance and pressure-bearing strength of the heat exchanger are affected, butt-joint ports of straight pipes are not cleaned, and the problem that the butt-joint ports of the straight pipes are difficult to butt-joint with elbows subsequently exists due to impurities existing in the butt-joint ports of the straight pipes is solved. The problems that due to the existence of impurities, gaps exist between walls of a straight pipe and an elbow, the leakage risk is increased, and the stability of the position of the elbow and the welding precision are difficult to accurately control during assembly and manual welding of a large heat exchanger are solved.

Description

Technical Field

[0001] The invention relates to the technical field related to heat exchanger assembly, and in particular to a large heat exchanger core assembly robot. Background Art

[0002] Fin-tube heat exchanger is an efficient device that enhances heat exchange between fluids by expanding the heat transfer surface (fins). Its core structure consists of a base tube (straight tube / bent tube) and external welded or rolled fins. As a key component of industrial thermal energy management, it is widely used in boiler waste heat recovery, air conditioning and refrigeration, petrochemical, electric power and new energy, accounting for more than 40% of the industrial heat exchange equipment market share. Fin design significantly improves the heat transfer coefficient (up to 3-10 times that of a bare tube) by increasing the heat transfer area and disturbing the fluid flow. It is the core technology for balancing energy efficiency and equipment compactness.

[0003] For the assembly of fin tube heat exchangers, the tube bodies can be assembled by welding. Existing welding technology, such as the Chinese patent with publication number CN113996964A, a tube sheet welding method, a tube body and tube sheet connection method and a heat exchanger, includes the following steps: fixing the plate body; sleeve the sealing flat gasket on the outer periphery of the hollow cylindrical section, insert the hollow cylindrical section into the through hole from one end of the plate body; press the convex edge through the mold to protrude toward the plate body, and form an annular depression on the surface of the plate body by squeezing the plate body; the sealing flat gasket is clamped between the annular depression and the protruding part of the convex edge; keep the pressure state, weld on the other side of the hollow cylindrical section, and fix the intermediate body and the plate body. The present invention provides a tube sheet processing method that ensures the stability and sealing of the relative position of the tube sheet and the tube body after connection, and can appropriately reduce the welding quality requirements. The obtained tube sheet, through the use of the intermediate, has achieved the purpose of solving the sealing problem to a certain extent, thereby effectively reducing the welding requirements.

[0004] The above-mentioned prior art mainly targets the connection between the tube body and the tube sheet, and has not been designed for the assembly between the end of the straight tube and the elbow. The existing method is usually manual welding, which is highly dependent on the operator's skills. It is easy to cause fluctuations in weld quality due to differences in welder experience, affecting the sealing and pressure-bearing strength of the heat exchanger. The interface of the straight tube is not cleaned, and impurities on the interface surface will not only make it difficult to connect with the elbow, but also cause gaps between the tube bodies, increasing the risk of leakage. Especially in the assembly process of large heat exchangers, it is difficult to accurately control the elbow position and welding accuracy by manual operation. Based on this, the present application designs a large heat exchanger core assembly robot. Summary of the invention

[0005] The purpose of the present invention is to provide a large heat exchanger core assembly robot, which aims to significantly improve the level of automation in the large heat exchanger core assembly process and improve the product yield.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A large heat exchanger core assembly robot, comprising: an adjustment support platform; a return frame, which is connected to the upper end of the adjustment support platform through a connecting member, lifting components are symmetrically installed up and down inside the return frame, and clamping members are symmetrically installed at the left and right ends of the lifting components; a hoop frame, inside which a cleaning component is arranged, and a triggering member used in cooperation with the cleaning component is horizontally slidably arranged outside the hoop frame, and the front surface of the straight pipe is subjected to integrated air blowing and scraping operations through the cleaning component; a sliding rod, the rear end of which is connected to the clamping member, and the front end of the sliding rod is in sliding fit connection with a connecting sleeve arranged at the rear end of the hoop frame, and the position between the sliding rod and the connecting sleeve is temporarily locked through a locking component; a positioning component, which is connected to the outside of the clamping member through an electric telescopic frame; a welding component, which is arranged at the rear end of the positioning component, and the butt joint position of the elbow and the straight pipe is welded and assembled through the welding component.

[0008] Preferably, the lifting component includes an electric push rod, the electric push rod is connected to the return frame through a mounting seat, the ejecting end of the electric push rod is connected to a U-shaped frame, and the side wall of the U-shaped frame is detachably installed with the clamping member.

[0009] Preferably, the cleaning component includes an electric drive push rod, which is installed inside the hoop frame, and a power supply group electrically connected to the electric drive push rod is installed at the side wall position of the hoop frame; a pushing shell, which is connected to the ejecting end of the electric drive push rod; a cleaning unit, which is arranged in the front half of the inside of the pushing shell, and the upper end of the air blowing unit located in the rear half of the inside of the pushing shell is installed at the inner wall position of the hoop frame.

[0010] Preferably, the power supply group includes an insulating shell, the insulating shell is installed at the side wall position of the hoop frame, and the battery, switch member and electric drive push rod built in the insulating shell are electrically connected.

[0011] Preferably, the cleaning unit includes an extrusion head, the extrusion head is slidably arranged up and down in a sliding groove opened in the pushing shell, and the extrusion head is elastically connected to the sliding groove, a cleaning ring is installed at one end of the extrusion head close to the straight pipe, a scraping strip is laid on the polishing surface of the cleaning ring, and the thickness of the scraping strip gradually increases from front to back.

[0012] Preferably, the air blowing unit includes an arc-shaped shell, the outer end of which is fixedly connected to the inner wall of the hoop frame through a fixing block; a piston plate, which is horizontally slidably arranged in an air cavity opened in the arc-shaped shell; a connecting rod, the middle part of which is slidably arranged in a movable groove opened in the middle of the piston plate, a sealing plate is installed at the rear end of the connecting rod, the front end of the connecting rod is connected to a traction rod through a grid plate, a movable block is installed at the front end of the traction rod, and the movable block is slidably arranged up and down in a longitudinal groove opened at the rear end of the cleaning ring; an air blowing nozzle, which is arranged at the front side of the lower end of the arc-shaped shell, and a conveying cavity is communicated between the air blowing nozzle and the air cavity opened in the arc-shaped shell.

[0013] Preferably, the lower end of the triggering member is successively provided with a first pressing groove, a second pressing groove and an internal groove from front to back. The upper end of the pressing head in the initial position is located inside the second pressing groove, and a pressing strip is installed inside the internal groove, and the pressing strip is used in cooperation with the switch member.

[0014] Preferably, the locking assembly includes a clamping block, which is elastically slidably arranged in a clamping groove opened at the front end of the sliding rod. The upper half of the clamping block in the initial position is clamped in a locking groove opened at the lower end of the connecting sleeve. A plug member that is extrusion-fitted with the clamping block is slidably arranged up and down in the connecting sleeve. The front half of the sliding rod is slidably arranged in a transverse groove opened in the connecting sleeve, and the front end of the transverse groove is of a flared structure.

[0015] Preferably, the positioning assembly includes an arc-shaped positioning member, a connecting head is installed at the outer end of the arc-shaped positioning member, and a pressing layer is laid on the inner surface of the arc-shaped positioning member.

[0016] Preferably, the welding assembly includes an arc-shaped track, which is connected to the connecting head through a transverse rod; an electric drive slider, which is slidably arranged in the arc-shaped track. The rear end of the electric drive slider is fixedly installed with an arc-shaped frame. Linkage grooves are symmetrically opened at the left and right ends of the arc-shaped frame. A limiting member is slidably arranged in the linkage groove, and the outer end of the limiting member is elastically connected to the linkage groove. The rear end of the limiting member is of a chamfered structure. The rear end of the arc-shaped frame is connected to the triggering member through a linkage rod; a welding torch, which is arranged in the arc-shaped frame, and the butt joint position of the elbow and the straight pipe is welded and assembled by the welding torch that slides in a ring shape.

[0017] In summary, the present application includes the following beneficial technical effects:

[0018] 1. Improve the automation level: Through the collaborative work of multiple components, the full-process automated operations from straight pipe clamping, surface cleaning, elbow positioning to welding and assembly are realized, greatly reducing manual intervention, improving production efficiency and reducing labor costs.

[0019] 2. Ensure the welding quality: The cleaning component performs integrated air blowing and scraping operations on the surface of the straight pipe, effectively removing surface impurities, providing a clean surface for welding, reducing welding defects, improving welding quality, and thus improving the product qualification rate.

[0020] 3. Enhance positioning accuracy: The design of the lifting component, clamping component and positioning component can accurately position the straight pipe and elbow, ensuring the accuracy of their butt joint and further improving the assembly accuracy and stability.

[0021] 4. Optimize the operation process: The cooperation between components is tight and the operation process is smooth. Through the design of the trigger and locking component, the orderly switching of different operation links is realized, improving the overall operation efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present invention;

[0023] Figure 2 is a first schematic structural diagram among the adjustment return frame, lifting component, clamping component, hoop frame, cleaning component, trigger, sliding rod, locking component, positioning component, electric telescopic frame and welding component of the present invention;

[0024] Figure 3 is a second schematic structural diagram among the adjustment return frame, lifting component, clamping component, hoop frame, cleaning component, trigger, sliding rod, locking component, positioning component, electric telescopic frame and welding component of the present invention;

[0025] Figure 4 is a top view among the adjustment return frame, lifting component, clamping component, hoop frame, cleaning component, trigger, sliding rod, locking component, positioning component, electric telescopic frame and welding component of the present invention;

[0026] Figure 5 is the present invention Figure 4 A-A cross-sectional view;

[0027] Figure 6 is a cross-sectional view between the present invention and the elbow and straight pipe;

[0028] Figure 7 is a position diagram between the present invention and the elbow and straight pipe;

[0029] Figure 8 is a partial cross-sectional view among the arc frame, limiting part and welding torch of the present invention;

[0030] Figure 9 is the present invention Figure 6 Local enlarged view at X;

[0031] Figure 10 is the present invention Figure 6 Local enlarged view at Y;

[0032] Figure 11 is the present invention Figure 6Partial enlarged view at Z.

[0033] Description of reference numerals: 1, adjusting support platform; 2, loop-shaped frame; 3, lifting assembly; 4, clamping member; 5, hoop frame; 6, cleaning assembly; 7, triggering member; 8, locking assembly; 9, welding assembly; 11, electric slider; 12, electric push rod; 31, electric push rod; 32, U-shaped frame; 61, electric drive push rod; 62, power supply group; 63, pushing shell; 64, cleaning unit; 65, air blowing unit; 71, sliding rod; 72, first extrusion groove; 73, second extrusion groove; 74, extrusion strip; 81, positioning assembly; 82, electric telescopic frame; 83, arc-shaped positioning member; 91, arc-shaped track; 92, electric drive slider; 93, arc-shaped frame; 94, limiting member; 95, welding torch; 621, insulating shell; 622, switch member; 641, extrusion head; 642, cleaning ring; 643, scraping strip; 651, arc-shaped shell; 652, fixed block; 653, piston plate; 654, connecting rod; 655, sealing plate; 656, grid plate; 657, traction rod; 658, movable block; 659, air blowing nozzle; 811, clamping block; 812, pin member; 813, transverse groove. Detailed implementation manners

[0034] The following Figures 1 to 11 further describes the present application in detail.

[0035] The embodiment of the present application discloses a large heat exchanger core assembly robot, which clamps and positions the present application with a straight pipe, and then performs surface reciprocating integrated air blowing and scraping operations on the butting joint of the straight pipe, and then coaxial positions and aligns the straight pipe and the elbow and performs automatic welding after alignment, improving the welding and assembly efficiency of the two.

[0036] Refer to Figures 1 to 6As shown in the figure, a large heat exchanger core assembly robot disclosed in this embodiment includes an adjustment support platform 1, a rectangular frame 2, a lifting assembly 3, a clamping member 4, a hoop frame 5, a cleaning assembly 6, a trigger member 7, a sliding rod 71, a locking assembly 8, a positioning assembly 81, an electric telescopic frame 82, and a welding assembly 9. The adjustment support platform 1 is a fixed base. The rectangular frame 2 is connected to the upper end of the adjustment support platform 1 through a connecting member 21. Lifting assemblies 3 are symmetrically installed inside the rectangular frame 2 in the vertical direction. Clamping members 4 are symmetrically installed at the left and right ends of the lifting assemblies 3. A cleaning assembly 6 is arranged inside the hoop frame 5. A trigger member 7 used in cooperation with the cleaning assembly 6 is horizontally slidably arranged outside the hoop frame 5. The front surface of the straight pipe is subjected to integrated air blowing and scraping operations by the cleaning assembly 6. The rear end of the sliding rod 71 is connected to the clamping member 4. The front end of the sliding rod 71 is in sliding fit connection with a connecting sleeve arranged at the rear end of the hoop frame 5. And the position between the sliding rod 71 and the connecting sleeve is temporarily locked by the locking assembly 8. The positioning assembly 81 is connected to the outside of the clamping member 4 through the electric telescopic frame 82. The welding assembly 9 is arranged at the rear end of the positioning assembly 81. The butt joint position of the elbow and the straight pipe is welded and assembled by the welding assembly 9.

[0037] During the actual assembly process, the present application is brought to the working area by the adjustment support platform 1, and the clamping member 4 is moved to the upper and lower positions of the straight pipe under multi-degree-of-freedom adjustment. The clamping member 4 is driven by the lifting assembly 3 to perform upper and lower clamping, so as to position the straight pipe. The two ends of the elbow are inserted into the positioning assembly 81 for positioning. Subsequently, the electric telescopic frame 82 drives the elbow and the welding assembly 9 to move backward. At this time, the trigger member 7 moves synchronously, so as to trigger the cleaning assembly 6 to perform reciprocating integrated air blowing and scraping operations on the outer surface of the butt joint of the straight pipe until the trigger member 7 moves backward to a suitable position before stopping the operation. At this time, the elbow and the straight pipe are butted, and the butt joint is circularly welded by the welding assembly 9 to achieve the purpose of assembly.

[0038] Refer to Figure 1 As shown in the figure, the adjustment support platform 1 includes a moving platform. The left and right arranged moving platforms are connected to a connecting plate through a support frame. An electric slider 11 is installed on the connecting plate. A slider is slidably arranged on the electric slider 11. The upper end of the slider is connected to a power push rod 12. The lower end of the power push rod 12 is connected to the connecting member 21 through a rotating member.

[0039] During actual multi-degree-of-freedom adjustment, the present application is driven by the moving platform to perform large-range horizontal movement, driven by the electric slider 11 to perform left and right horizontal movement, and driven by the power push rod 12 to perform lifting.

[0040] Refer to Figure 2As shown in the figure, the lifting assembly 3 includes an electric push rod 31. The electric push rod 31 is connected to the U-shaped frame 2 through a mounting seat. The ejecting end of the electric push rod 31 is connected to the U-shaped frame 32. The side wall of the U-shaped frame 32 and the clamping member 4 are detachably mounted.

[0041] During the actual clamping process, the electric push rod 31 arranged up and down drives the corresponding clamping member 4 to move towards each other up and down until the straight pipe is clamped and positioned, so that the present application is temporarily positioned with the straight pipe.

[0042] Refer to Figure 9 As shown in the figure, the cleaning assembly 6 includes an electric drive push rod 61, a power supply group 62, a push housing 63, a cleaning unit 64, and a gas blowing unit 65. The electric drive push rod 61 is installed inside the hoop frame 5. The power supply group 62 electrically connected to the electric drive push rod 61 is installed at the side wall position of the hoop frame 5. The push housing 63 is connected to the ejecting end of the electric drive push rod 61. The cleaning unit 64 is arranged in the front half of the interior of the push housing 63. The upper end of the gas blowing unit 65 located in the rear half of the interior of the push housing 63 is installed at the inner wall position of the hoop frame 5.

[0043] During the actual cleaning process, the trigger member 7 moving backward triggers the power supply group 62 to supply power to the electric drive push rod 61. After being powered on, the electric drive push rod 61 drives the push housing 63 and the cleaning unit 64 to move back and forth to scrape the surface of the mating joint of the straight pipe. At the same time, the gas blowing unit 65 performs a gas blowing operation on the surface of the mating joint of the cleaned straight pipe.

[0044] Refer to Figure 9 As shown in the figure, the power supply group 62 includes an insulating housing 621. The insulating housing 621 is installed at the side wall position of the hoop frame 5. The battery and the switch member 622 built in the insulating housing 621 are electrically connected to the electric drive push rod 61. The switch member 622 is a prior art and is in an off state when not pressed.

[0045] During the actual power-on process, when the trigger member 7 moving backward presses the switch member 622 with its extrusion strip 74, a conductive state is formed between the battery, the switch member 622 and the electric drive push rod 61. At this time, the electric drive push rod 61 is powered on for operation.

[0046] Refer to Figure 9 As shown in the figure, the present application further improves the structures of the cleaning unit 64, the gas blowing unit 65, and the trigger member 7. The specific structures are as follows. The cleaning unit 64 includes an extrusion head 641. The extrusion head 641 is slidably arranged up and down in a sliding groove opened in the push housing 63, and the extrusion head 641 is elastically connected to the sliding groove. One end of the extrusion head 641 close to the straight pipe is installed with a cleaning ring 642. A scraping strip 643 is laid on the polishing surface of the cleaning ring 642, and the thickness of the scraping strip 643 gradually increases from front to back to form a stepped cleaning and scraping.

[0047] Refer to Figure 9 and Figure 10 As shown, the air blowing unit 65 includes an arc-shaped shell 651, a fixing block 652, a piston plate 653, a connecting rod 654, a sealing plate 655, a grid plate 656, a traction rod 657, a movable block 658, and an air blowing nozzle 659. The outer end of the arc-shaped shell 651 is fixedly connected to the inner wall of the hoop frame 5 through the fixing block 652. The piston plate 653 is horizontally slidably arranged in the air cavity opened in the arc-shaped shell 651. The middle part of the connecting rod 654 is slidably arranged in the movable groove opened in the middle part of the piston plate 653. The rear end of the connecting rod 654 is provided with a sealing plate 655. The front end of the connecting rod 654 is connected to the traction rod 657 through the grid plate 656. The front end of the traction rod 657 is provided with a movable block 658. The movable block 658 is vertically slidably arranged in the longitudinal groove opened at the rear end of the cleaning ring 642. The air blowing nozzle 659 is arranged at the front side of the lower end of the arc-shaped shell 651, and a conveying cavity is communicated between the air blowing nozzle 659 and the air cavity opened in the arc-shaped shell 651.

[0048] Refer to Figure 9 As shown, the lower end of the trigger member 7 is successively provided with a first pressing groove 72, a second pressing groove 73 and an inner groove from front to back. The upper end of the pressing head 641 at the initial position is located inside the second pressing groove 73. At this time, the trigger member 7 is in the initial position. An extrusion strip 74 is installed inside the inner groove, and the extrusion strip 74 is used in cooperation with the switch member 622.

[0049] During the actual cleaning process, when the trigger member 7 is in the front position (initial position), the trigger member 7 does not squeeze the extrusion head 641 at this time. The extrusion head 641 drives the cleaning ring 642 away from the surface of the straight pipe under the elastic action, and the scraping strip 643 does not contact the surface of the straight pipe, ensuring that the two are in an open state before cleaning. During the backward movement of the trigger member 7, the end face of the trigger member 7 squeezes the extrusion head 641 to drive the cleaning ring 642 close to the surface of the straight pipe until the scraping strip 643 contacts the surface of the straight pipe. At the same time, the switch member 622 is squeezed by the extrusion strip 74 to make the power supply group 62 form a circuit. After being powered on, the electric drive push rod 61 drives the push housing 63, the cleaning ring 642, and the scraping strip 643 to move back and forth to perform a stepped scraping on the surface of the docking port of the straight pipe (the particulate impurities and hair-like impurities can be wiped). The cleaning ring 642 moving back and forth drives the traction rod 657 to move back and forth. When the traction rod 657 moves forward, the sealing plate 655 preferentially fills into the movable groove and then drives the piston plate 653 in a sealed state to push forward, so as to eject the gas in the air chamber of the arc-shaped housing 651 from the air blowing nozzle 659, so as to further assist in blowing off the impurities that have been cleaned and separated from the surface of the straight pipe. When the traction rod 657 moves backward, the grid plate 656 preferentially fills into the movable groove. Since the grid plate 656 itself is a grid structure (not a solid plate), the grid plate 656 is driven by the traction rod 657 to smoothly push the piston plate 653 backward (at this time, there is no need to intake air from the air blowing nozzle 659).

[0050] Refer to Figure 9 As shown, the locking assembly 8 includes a clamping block 811. The clamping block 811 is elastically slidably arranged in the clamping groove opened at the front end of the sliding rod 71. The upper half of the clamping block 811 in the initial position is clamped in the locking groove opened at the lower end of the connecting sleeve. The plug member 812 used in extrusion cooperation with the clamping block 811 is slidably arranged up and down in the connecting sleeve. The front half of the sliding rod 71 is slidably arranged in the transverse groove 813 opened in the connecting sleeve, and the front end of the transverse groove 813 is of a flared structure.

[0051] When the trigger member 7 does not squeeze and unlock the locking assembly 8, the sliding rod 71 and the connecting sleeve are temporarily locked by the locking assembly 8. At this time, the positions of the sliding rod 71 and the hoop frame 5 are relatively stationary. The occurrence of this situation ensures that the cleaning unit 64 and the air blowing unit 65 are in their original positions to smoothly clean the surface of the mating interface of the straight pipe. When the trigger member 7 squeezes and unlocks the locking assembly 8 (at this time, the trigger member 7 is in the rearmost position relative to the hoop frame 5), at this time, the pin member 812 in the locking assembly 8 is squeezed by the pressing strip 74 and then squeezes the clamping block 811, so that it no longer engages with the locking groove. At this time, the position between the sliding rod 71 and the connecting sleeve is unlocked. At the same time, the pressing strip 74 is separated from the switch member 622, the electric drive push rod 61 is powered off, and the pressing head 641 enters the first pressing groove 72 so that the pressing head 641 is not squeezed. Under the elastic action, the pressing head 641 drives the cleaning ring 642 away from the surface of the straight pipe so that the scraping strip 643 does not contact the surface of the straight pipe (the non-contact at this time again ensures that no additional contact wear occurs between the scraping strip 643 and the surface of the straight pipe when the hoop frame 5 moves backward subsequently). Then, due to the unlocking of the positions of the sliding rod 71 and the hoop frame 5, the positioning assembly 81 that moves backward drives the trigger member 7 and the hoop frame 5 to move backward as a whole, so that the mating interface of the straight pipe is exposed, and the elbow is aligned and connected to the straight pipe.

[0052] Referring to Figure 11 As shown, the positioning assembly 81 includes an arc-shaped positioning member 83. A connecting head is installed at the outer end of the arc-shaped positioning member 83. A pressing layer is laid on the inner surface of the arc-shaped positioning member 83. The pressing layer has a certain elasticity. After the pressing layers arranged up and down form an annular structure, the elbow can still enter with increased resistance for wrapped clamping.

[0053] Referring to Figure 5 As shown, the electric telescopic frame 82 is composed of a telescopic plate and an electric rod. A telescopic plate is connected between the connecting head and the clamping member 4. The length of the telescopic plate is adjusted by the electric rod for telescopic operation, and the telescopic plate is driven by the electric rod for telescopic adjustment.

[0054] Referring to Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 、 Figure 8As shown, the welding assembly 9 includes an arc track 91, an electric drive slider 92, an arc frame 93, a stopper 94, and a welding gun 95. The arc track 91 is connected to the connector through a transverse rod. The electric drive slider 92 is slidably arranged in the arc track 91. The rear end of the electric drive slider 92 is fixedly installed with the arc frame 93. The electric drive slider 92 in the prior art is a curved guide rail driver, an electric actuator specially designed for a curved path, and non-linear motion is achieved through customized guide rails (arc track 91) and sliders. The guide rails can be customized to be arcs or complex shapes with any radius. The arc frame 93 has a complex curve, and the driving mode is mostly a gear rack or a friction wheel, which is suitable for light load, medium and low speed scenes. Linkage grooves are symmetrically opened on the left and right ends of the arc frame 93. A limit member 94 is slidably arranged in the linkage groove. The outer end of the limit member 94 is elastically connected to the linkage groove. The rear end of the limit member 94 is a chamfered structure. The rear end of the arc frame 93 is connected to the trigger member 7 through a linkage rod 941. The welding gun 95 is arranged in the arc frame 93. The welding gun 95 is a prior art. The welding gun 95 that slides in an annular manner is used to weld and assemble the docking position of the elbow and the straight pipe.

[0055] After the upper and lower arc tracks 91 are closed, a complete circular track structure is formed. When the subsequent elbow is extended into the positioning component 81, the end position of the elbow is limited by the limiter 94, so that the end position of the elbow is aligned with the welding gun 95 (to facilitate the subsequent alignment welding). In the process of the subsequent positioning component 81 and the welding component 9 moving backward, when the limiter 94 hits the front end of the straight pipe, the front end corner area of ​​the straight pipe squeezes the inclined surface of the limiter 94 so that the limiter 94 retracts into the linkage groove, and the squeezing avoidance ensures the normal movement of the welding component 9. After the elbow and the straight pipe are connected and installed, the arc frame 93 and the welding gun 95 are driven by the electric drive slider 92 to rotate along the arc track 91, thereby performing circular welding.

[0056] Working principle:

[0057] Step 1: Confirm that the materials and sizes of straight pipes and elbows meet the design requirements, ensure that the welding area is dry and ventilated, and avoid excessive humidity that affects the welding quality;

[0058] Step 2: Bring the application to the working area by adjusting the support platform 1, and move the clamping member 4 to the upper and lower positions of the straight pipe under multi-degree-of-freedom adjustment, and drive the clamping member 4 to clamp up and down through the lifting component 3, so as to position the straight pipe;

[0059] Step 3: Insert both ends of the elbow into the positioning assembly 81 for positioning;

[0060] Step Four: Drive the elbow and the welding assembly 9 to move backward by the electric telescopic frame 82. The synchronously moving trigger 7 triggers the power supply group 62 to supply power to the electric push rod 61. After being powered on, the electric push rod 61 drives the push shell 63 and the cleaning unit 64 to move back and forth to scrape and clean the surface of the butt joint of the straight pipe. At the same time, the air blowing unit 65 performs air blowing operation on the surface of the butt joint of the cleaned straight pipe.

[0061] Step Five: After the cleaning is completed, drive the elbow and the welding assembly 9 to continue moving backward by the electric telescopic frame 82 until they move to the rearmost side. At this time, the elbow is butted with the straight pipe, and the butt joint is circularly welded by the welding assembly 9 to achieve the purpose of assembly.

[0062] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A large heat exchanger core assembly robot, characterized in that: include: Adjust the support platform; A return frame is connected to the upper end of the adjustment support platform through a connecting piece, a lifting assembly is symmetrically installed in the return frame, and clamping pieces are symmetrically installed at the left and right ends of the lifting assembly; The hoop frame has a cleaning component disposed inside thereof, and a trigger member used in conjunction with the cleaning component is horizontally slidably disposed outside the hoop frame, and the front end surface of the straight pipe is subjected to an integrated air blowing and scraping operation through the cleaning component; The rear end of the sliding rod is connected to the clamping member, the front end of the sliding rod and the connecting sleeve provided at the rear end of the hoop frame are connected in a sliding fit, and the position between the sliding rod and the connecting sleeve is temporarily locked by a locking assembly; A positioning assembly connected to the outside of the clamping member via an electric telescopic frame; The welding assembly is arranged at the rear end of the positioning assembly, and the butt joints of the elbow and the straight pipe are welded and assembled through the welding assembly.

2. A large heat exchanger core assembly robot according to claim 1, characterized in that: The lifting assembly comprises an electric push rod, which is connected to the return frame through a mounting seat, and the ejection end of the electric push rod is connected to the U-shaped frame, and the side wall of the U-shaped frame and the clamping member are detachably mounted.

3. The large heat exchanger core assembly robot according to claim 1, characterized in that: The cleaning component includes: The electric drive push rod is installed inside the hoop frame, and the power supply group electrically connected to the electric drive push rod is installed on the side wall of the hoop frame; A push shell connected to the ejection end of the electric drive push rod; The cleaning unit is arranged in the front half of the driving shell, and the upper end of the air blowing unit located in the rear half of the driving shell is installed on the inner wall of the hoop frame.

4. A large heat exchanger core assembly robot according to claim 3, characterized in that: The power supply group includes an insulating shell, which is installed on the side wall of the clamp frame. The battery, the switch component and the electric drive push rod built into the insulating shell are electrically connected.

5. A large heat exchanger core assembly robot according to claim 4, characterized in that: The cleaning unit includes an extrusion head, which is slidable up and down in a sliding groove opened in a push shell, and the extrusion head and the sliding groove are elastically connected. A cleaning ring is installed at one end of the extrusion head close to the straight tube, and a scraping strip is laid on the polished surface of the cleaning ring, and the thickness of the scraping strip gradually increases from front to back.

6. A large heat exchanger core assembly robot according to claim 5, characterized in that: The air blowing unit comprises: The outer end of the arc-shaped shell is fixedly connected to the inner wall of the hoop frame through a fixing block; A piston plate is horizontally slidably disposed in the air cavity formed in the arc-shaped shell; A connecting rod, the middle of which is slidably arranged in a movable groove opened in the middle of the piston plate, a sealing plate is installed at the rear end of the connecting rod, the front end of the connecting rod is connected to the traction rod through a mesh plate, and a movable block is installed at the front end of the traction rod, and the movable block is slidably arranged in a longitudinal groove opened at the rear end of the cleaning ring; The air blowing nozzle is arranged at the front side of the lower end of the arc-shaped shell, and a conveying cavity is connected between the air blowing nozzle and the air cavity opened in the arc-shaped shell.

7. The large heat exchanger core assembly robot according to claim 5, characterized in that: The lower end of the trigger member is provided with extrusion groove 1, extrusion groove 2 and built-in groove from front to back, the upper end of the extrusion head in the initial position is located inside the extrusion groove 2, and an extrusion strip is installed inside the built-in groove, which is used in conjunction with the switch member.

8. The large heat exchanger core assembly robot according to claim 1, characterized in that: The locking assembly includes a clamping block, which is elastically slidably arranged in a clamping groove opened at the front end of the sliding rod. The upper half of the clamping block in the initial position is clamped in the locking groove opened at the lower end of the connecting sleeve. The latch member used for extrusion cooperation with the clamping block is slidably arranged in the connecting sleeve up and down. The front half of the sliding rod is slidably arranged in the transverse groove opened in the connecting sleeve, and the front end of the transverse groove is a flared structure.

9. The large heat exchanger core assembly robot according to claim 1, characterized in that: The positioning component comprises an arc-shaped positioning piece, a connector is installed at the outer end of the arc-shaped positioning piece, and a compression layer is laid on the inner surface of the arc-shaped positioning piece.

10. The large heat exchanger core assembly robot according to claim 1, characterized in that: The welding assembly comprises: A curved track connected to the connector via a transverse rod; The electric drive slider is slidably arranged in the arc track, and an arc frame is fixedly installed at the rear end of the electric drive slider. Linkage grooves are symmetrically provided at the left and right ends of the arc frame. A limit piece is slidably arranged in the linkage groove. The outer end of the limit piece is elastically connected to the linkage groove. The rear end of the limit piece is a chamfered structure. The rear end of the arc frame is connected to the trigger piece through a linkage rod. The welding gun is arranged in the arc frame, and the butt joint position of the elbow and the straight pipe is welded and assembled by the annularly sliding welding gun.

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