A kind of waste heat boiler pipe welding positioning tooling

Abstract

The application discloses a kind of waste heat boiler pipe welding positioning tool, comprising: pedestal, fixedly arranged;Mounting assembly is used to fix the position of pipe;Including mounting plate, with The pedestal sliding connection, and sliding direction is parallel to the axial direction of the pipe, the mounting plate is provided with for limiting the position of support heat exchange sheet limiting assembly;Drive assembly is used to drive the sliding of the mounting plate;Material box, fixedly arranged, for placing the support heat exchange sheet to be grabbed;Grabbing and conveying assembly is used to convey the support heat exchange sheet in the material box one by one to the target position of the pipe, and be located in the limiting assembly. The above-mentioned waste heat boiler pipe welding positioning tool structure is reasonable, improves the position precision of support heat exchange sheet on pipe, and improves welding efficiency.

Description

Technical Field

[0001] This invention relates to a positioning fixture, and more particularly to a positioning fixture for welding pipes in a waste heat boiler. Background Technology

[0002] The waste heat boiler has supporting heat exchange plates welded to its outer periphery to support the heat exchange tubes and increase the heat exchange area of ​​the tubes, thereby enhancing the heat exchange effect. Several supporting heat exchange plates are arranged along the axis of the tubes, and two sets are arranged symmetrically in the plane containing the axis.

[0003] In the existing technology, workers place the hanging pipe on the welding platform, place the supporting heat exchange fins one by one and perform spot welding, which is not only inefficient, but also cannot guarantee the accuracy of the welding points.

[0004] Therefore, it is necessary to improve the existing welding and positioning fixtures for waste heat boiler hanging pipes. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects in the prior art and provide a welding and positioning fixture for waste heat boiler hanging pipes, which improves the positional accuracy of the heat exchange fins on the hanging pipes and increases welding efficiency.

[0006] To achieve the above-mentioned technical effects, the technical solution of the present invention is: a welding and positioning fixture for waste heat boiler hanging pipes, comprising:

[0007] Base, fixed installation;

[0008] The mounting assembly is used to fix the position of the hanging pipe; it includes a mounting plate that is slidably connected to the base and the sliding direction is parallel to the axis of the hanging pipe, and the mounting plate is provided with a limiting component for limiting the position of the supporting heat exchange fins;

[0009] A drive component for driving the sliding of the mounting plate;

[0010] The material box, a fixed installation, is used to hold the support heat exchange fins to be gripped;

[0011] The gripping and conveying assembly is used to convey the supporting heat exchange plates in the material box one by one to the target position of the hanging pipe and confine them in the limiting assembly.

[0012] A preferred technical solution is that the mounting plate is provided with a limiting groove that cooperates with the lifting pipe, and the extending direction of the limiting groove is parallel to the axis of the lifting pipe.

[0013] A preferred technical solution is that the mounting assembly further includes a limiting plate slidably connected to the mounting plate, the sliding direction of the limiting plate being parallel to the axis of the lifting pipe, a limiting wall being fixedly provided at the end of the limiting groove, the two ends of the lifting pipe being clamped between the limiting wall and the limiting plate, and an elastic element being provided between the limiting plate and the mounting plate, the elastic force direction of the elastic element being towards the limiting wall.

[0014] A preferred technical solution is that the limiting component includes a fixedly arranged protruding column unit, the protruding column unit includes a limiting protruding column for clamping the supporting heat exchange plate, and the protruding column unit is arranged with a plurality of protruding columns along the axis of the hanging pipe and each corresponds to a target position.

[0015] A preferred technical solution is that the opposing surfaces of the two limiting protrusions are provided with guide arc surfaces.

[0016] A preferred technical solution is that the limiting component further includes an adsorption component for adsorbing the supporting heat exchange plate at the target position.

[0017] A preferred technical solution is that the mounting plate is provided with a magnetic groove, the magnetic groove is located below the target position, and the adsorption component includes magnetic points disposed in the magnetic groove, the magnetic points corresponding one-to-one with the target position.

[0018] A preferred technical solution is that the welding station of the base is provided with a clamping component, which is used to clamp the supporting heat exchange plate against the hanging pipe during spot welding.

[0019] A preferred technical solution is that the clamping component includes a pulley, the straight-line distance between the feed end of the pulley and the hanging pipe is greater than the length of the supporting heat exchange plate, and the straight-line distance between the discharge end of the pulley and the hanging pipe is equal to the length of the supporting heat exchange plate.

[0020] A preferred technical solution is that the material box includes a limiting sidewall for limiting the position of the supporting heat exchange plate, and the limiting sidewall is provided with a folded edge that matches the folding angle of the supporting heat exchange plate.

[0021] A preferred technical solution is that the gripping and conveying assembly includes a gripping and conveying arm and a switching assembly for driving the gripping and conveying arm to switch between the material box and the target position, and the end of the gripping and conveying arm is provided with an extraction component for extracting one of the supporting heat exchange plates.

[0022] A preferred technical solution is that the extraction component includes an electromagnetic plate fixedly connected to the gripping arm, and a convex ring is fixedly provided below the electromagnetic plate to be positioned and matched with the hoisting groove of the supporting heat exchange plate, the thickness of the convex ring being no greater than the thickness of the supporting heat exchange plate.

[0023] A preferred technical solution is that the switching assembly includes a rotating assembly for driving the gripper arm to rotate and a lifting assembly for driving the gripper arm to rise and fall; a base is fixedly provided on the side wall of the base, and a lifting plate is raised and lowered on the base; the gripper arm is rotatably connected to the lifting plate; the rotating assembly includes a rotating motor, which is fixedly connected to the lifting plate; the rotating shaft of the gripper arm is connected to the output shaft of the rotating motor; the lifting assembly includes a lifting motor fixedly connected to the base and a lifting screw rotatably connected to the base; the lifting screw is driven to rotate by the lifting motor; and the lifting plate is threadedly connected to the lifting screw.

[0024] A preferred technical solution is that a plurality of bases are arranged along the axis perpendicular to the lifting pipe, and the material box also includes a common material box, which is arranged between two adjacent bases. The openings of the lifting slots of two adjacent supporting heat exchange plates in the common material box are arranged facing away from each other. Two gripping arms on the two adjacent bases and opposite to each other take up the supporting heat exchange plates in the common material box in sequence.

[0025] A preferred technical solution is that the driving assembly includes a driving screw rotatably connected to the base and a driving motor for driving the driving screw to rotate, the mounting plate is threadedly connected to the driving screw, and the axis of the driving screw is parallel to the axis of the lifting pipe.

[0026] The advantages and beneficial effects of the present invention are as follows: The waste heat boiler hanging pipe welding positioning fixture of the present invention has a reasonable structure. By setting up a grabbing and feeding component and an installation component, the supporting heat exchange plates in the material box are grabbed one by one to the target position of the hanging pipe and limited, which prepares for subsequent welding. Compared with the prior art, it improves the positional accuracy of the supporting heat exchange plates on the hanging pipe and improves the welding efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of an embodiment of the waste heat boiler hanging pipe welding and positioning fixture of the present invention;

[0028] Figure 2 This is a schematic diagram of the initial position of the grabbing and conveying component;

[0029] Figure 3 This is a schematic diagram showing the state of the grabbing and conveying component grabbing a support heat exchange plate and conveying it to the target position;

[0030] Figure 4 This is a schematic diagram showing the state of the heat exchange fins and the clamping components in cooperation;

[0031] Figure 5 This is a structural diagram of the switching component;

[0032] Figure 6yes Figure 5 An explosion diagram;

[0033] Figure 7 This is a schematic diagram of the material box structure;

[0034] Figure 8 yes Figure 7 An explosion diagram;

[0035] Figure 9 This is a structural diagram of the installed components;

[0036] Figure 10 yes Figure 9 An explosion diagram;

[0037] Figure 11 yes Figure 9 A sectional view;

[0038] Figure 12 This is a schematic diagram of the structure supporting the heat exchange fins and the hanging pipes after welding.

[0039] Figure 13 This is a schematic diagram of the structure supporting the heat exchange fins.

[0040] In the diagram: 1. Base; 2. Mounting plate; 21. Limiting groove; 22. Limiting plate; 23. Limiting wall; 24. Elastic element; 25. Magnetic groove; 26. Magnetic point; 3. Material box; 31. Limiting side wall; 32. Folded edge; 33. Common material box; 4. Supporting heat exchange plate; 41. Lifting groove; 42. Welded wall; 43. Outer side wall; 5. Limiting protrusion; 51. Guide arc surface; 6. Pulley; 7. Grab and feed arm; 71. Electromagnetic plate; 72. Convex ring; 8. Base; 81. Lifting plate; 82. Rotating motor; 83. Lifting motor; 84. Lifting screw; 9. Drive motor; 91. Drive screw; a. Lifting pipe; a1. Target position. Detailed Implementation

[0041] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0042] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "horizontal," "vertical," "top," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] Example

[0044] like Figure 1-13 As shown, the waste heat boiler hanging pipe welding and positioning fixture of the embodiment includes:

[0045] Base 1, fixed installation;

[0046] The mounting assembly is used to fix the position of the hanging pipe a; it includes a mounting plate 2, which is slidably connected to the base 1 and the sliding direction is parallel to the axis of the hanging pipe a. The mounting plate 2 is provided with a limiting component for limiting the position of the supporting heat exchange fins 4.

[0047] A driving component for driving the sliding of the mounting plate 2;

[0048] Material box 3, fixedly installed, is used to hold the support heat exchange plate 4 to be grasped;

[0049] The gripping and conveying assembly is used to convey the supporting heat exchange plates 4 in the material box 3 one by one to the target position a1 of the hanging pipe a, and confine them in the limiting assembly.

[0050] With this design, the installation component fixes the position of the hanging pipe a, and the limit component fixes the position of the supporting heat exchange plate 4. The grabbing and conveying component grabs the supporting heat exchange plate 4 in the material box 3 one by one to the limit component. The supporting heat exchange plate 4 is to be welded to the hanging pipe a, which improves the positional accuracy of the supporting heat exchange plate 4 on the hanging pipe a.

[0051] Specifically, the mounting plate 2 is provided with a limiting groove 21 that cooperates with the lifting pipe a, and the extending direction of the limiting groove 21 is parallel to the axis of the lifting pipe a.

[0052] With this design, the hanging pipe a can be confined in the limiting groove 21, preventing the hanging pipe a from undergoing radial displacement.

[0053] Specifically, the installation assembly also includes a limiting plate 22 that is slidably connected to the mounting plate 2. The sliding direction of the limiting plate 22 is parallel to the axis of the hanging pipe a. A limiting wall 23 is fixedly provided at the end of the limiting groove 21. The two ends of the hanging pipe a are clamped between the limiting wall 23 and the limiting plate 22. An elastic element 24 is provided between the limiting plate 22 and the mounting plate 2. The elastic force of the elastic element 24 is directed toward the limiting wall 23.

[0054] With this design, the lifting pipe a is clamped and limited by the limiting plate 22 and the limiting wall 23 to prevent the lifting pipe a from axial displacement; the elastic element 24 can be a tension spring, etc.

[0055] Specifically, the limiting component includes a fixedly arranged protruding column unit, which includes a limiting protruding column 5 for clamping the supporting heat exchange plate 4. The protruding column unit is arranged in a plurality of such protruding columns along the axis of the hanging pipe a, and each of them corresponds to the target position a1.

[0056] With this design, the limiting protrusion 5 positions the heat exchange plate 4, and at the same time, the limiting protrusion 5 limits the heat exchange plate 4.

[0057] Furthermore, the opposing surfaces of the two limiting protrusions 5 are provided with guide arc surfaces 51.

[0058] With this design, when the support heat exchanger plate 4 is picked up and moved above the target position a1 by the grabbing and conveying component, the descent of the support heat exchanger plate 4 can be guided to the accurate position by the guide arc surface 51, preventing the support heat exchanger plate 4 from being misaligned and stuck by the limiting protrusion 5.

[0059] Furthermore, the limiting component also includes an adsorption component for adsorbing the supporting heat exchange plate 4 onto the target position a1.

[0060] With this design, the adsorption component can exert force on the heat exchange plate 4 as it descends to the target position a1. When the heat exchange plate 4 falls on the mounting plate 2, the adsorption component can also fix the position of the heat exchange plate 4, preventing the heat exchange plate 4 from shifting during the movement of the mounting plate 2.

[0061] Specifically, the mounting plate 2 is provided with a magnetic groove 25, which is located below the target position a1. The adsorption component includes magnetic points 26 disposed in the magnetic groove 25, and the magnetic points 26 correspond one-to-one with the target position a1.

[0062] This design achieves the purpose of magnetically fixing the heat exchange plate 4 at the target position a1; the magnetic attraction point 26 can be controlled by electromagnetic adsorption. When the welded hanging pipe a is removed from the mounting plate 2, the current of the magnetic attraction point 26 can be disconnected, so that the magnetic attraction point 26 loses its magnetic force, making it easier to remove the hanging pipe a.

[0063] Furthermore, the welding station of the base 1 is provided with a clamping component, which is used to clamp the supporting heat exchange plate 4 against the hanging pipe a during spot welding.

[0064] With this design, when the target position a1 moves to the welding station, the supporting heat exchange plate 4 is pressed against the surface of the hanging pipe a by the pressing component, ensuring the accuracy and firmness of the welding.

[0065] Specifically, the clamping assembly includes a pulley 6, the straight-line distance between the feed end of the pulley 6 and the hanging pipe a is greater than the length of the supporting heat exchange plate 4, and the straight-line distance between the discharge end of the pulley 6 and the hanging pipe a is equal to the length of the supporting heat exchange plate 4.

[0066] With this design, the feed end of the pulley 6 has a large gap, which facilitates the introduction of the heat exchange plate 4. As the mounting plate 2 moves, the heat exchange plate 4 comes into contact with the pulley 6 and is pressed against the surface of the hanging pipe a by the pulley 6.

[0067] Specifically, the material box 3 includes a limiting sidewall 31 for limiting the position of the supporting heat exchange plate 4, and the limiting sidewall 31 is provided with a folded edge 32 that matches the folding angle of the supporting heat exchange plate 4.

[0068] This design achieves the goal of supporting the heat exchanger 4 to be neatly stacked in the material box 3, without separating from the material box 3 on the horizontal plane, and without affecting the lifting and gripping of the electromagnetic plate 71.

[0069] Specifically, the gripping and conveying assembly includes a gripping and conveying arm 7 and a switching assembly for driving the gripping and conveying arm 7 to switch between the material box 3 and the target position a1. The end of the gripping and conveying arm 7 is provided with an extraction component for extracting one of the supporting heat exchange plates 4.

[0070] This design achieves the goal of picking up the supporting heat exchange plates 4 inside the material box 3 one by one and placing them onto the target position a1.

[0071] Specifically, the extraction component includes an electromagnetic plate 71 fixedly connected to the gripping arm 7. A convex ring 72 is fixedly provided below the electromagnetic plate 71, which is positioned and cooperates with the hoisting groove 41 of the supporting heat exchange plate 4. The thickness of the convex ring 72 is not greater than the thickness of the supporting heat exchange plate 4.

[0072] With this design, the convex ring 72 cooperates with the hanging groove 41 supporting the heat exchange plate 4, ensuring the accuracy of the gripping position of the electromagnetic plate 71. When the electromagnetic plate 71 is energized, it becomes magnetic and attracts the heat exchange plate 4. When the electromagnetic plate 71 is de-energized, it loses its magnetism and detaches from the heat exchange plate 4.

[0073] Specifically, the switching assembly includes a rotating assembly for driving the gripping arm 7 to rotate and a lifting assembly for driving the gripping arm 7 to rise and fall; a base 8 is fixedly provided on the side wall of the base 1, and a lifting plate 81 is raised and lowered on the base 8. The gripping arm 7 is rotatably connected to the lifting plate 81. The rotating assembly includes a rotating motor 82, which is fixedly connected to the lifting plate 81. The rotation shaft of the gripping arm 7 is connected to the output shaft of the rotating motor 82. The lifting assembly includes a lifting motor 83 fixedly connected to the base 8 and a lifting screw 84 rotatably connected to the base 8. The lifting screw 84 is driven to rotate by the lifting motor 83, and the lifting plate 81 is threadedly connected to the lifting screw 84.

[0074] With this design, the lifting motor 83 drives the lifting screw 84 to rotate, which in turn drives the lifting plate 81 to rise and fall, and the gripping arm 7 on the lifting plate 81 to rise and fall; the rotating motor 82 on the lifting plate 81 drives the gripping arm 7 to rotate, which in turn drives the electromagnetic plate 71 to move between the material box 3 and the target position a1.

[0075] Furthermore, the base 1 is provided with several of them along the axis perpendicular to the center line of the lifting pipe a, and the material box 3 also includes a common material box 33, which is disposed between two adjacent bases 1; the supporting heat exchange plate 4 includes a welded wall 42 abutting against the lifting pipe a and an outer wall 43 opposite to the welded wall 42, the openings of the lifting slots 41 of two adjacent supporting heat exchange plates 4 in the common material box 33 are arranged facing away from each other, and the welded wall 42 of any supporting heat exchange plate 4 is located on the same side as the outer wall 43 of the supporting heat exchange plate 4 above and below it; two gripping arms 7 on two adjacent bases 1 and opposite to each other take up the supporting heat exchange plate 4 in the common material box 33 in sequence.

[0076] With this design, the supporting heat exchange plates 4 in the common material box 33 are staggered, which reduces the contact area between two adjacent supporting heat exchange plates 4. The magnetic force of the electromagnetic plate 71 is not easily transmitted to the next supporting heat exchange plate, and the magnetic force on the next supporting heat exchange plate is smaller, reducing the phenomenon of the electromagnetic plate 71 adsorbing two supporting heat exchange plates at once. The slots of the lifting slots 41 of two adjacent supporting heat exchange plates 4 are opposite to each other, so they can be gripped and installed on two adjacent production lines. In order to ensure that the welding wall 42 is welded to the lifting pipe a, the moving directions of the mounting plates 2 of the two adjacent production lines are set opposite to each other. The gripping and conveying components on the two production lines are staggered in the gripping time of the common material box 33, which improves production efficiency, reduces the floor space of the production line, and avoids the phenomenon of the electromagnetic plate 71 gripping two supporting heat exchange plates 4 at once, ensuring the normal operation of the production line.

[0077] Specifically, the drive assembly includes a drive screw 91 rotatably connected to the base 1 and a drive motor 9 for driving the drive screw 91 to rotate. The mounting plate 2 is threadedly connected to the drive screw 91, and the axis of the drive screw 91 is parallel to the axis of the hanging pipe a.

[0078] This design achieves the goal of moving the mounting plate 2.

[0079] Specific usage of the example:

[0080] The hanging pipe 2 is placed in the limiting groove 21 and is clamped and fixed in position by the limiting plate 22 and the limiting wall 23. The switching component drives the electromagnetic plate 71 to grab the supporting heat exchange plate 4 from the material box 3 and move it to the target position a1. The supporting heat exchange plate at the target position a1 is fixed in position by the limiting component and the adsorption component. The driving component drives the mounting plate 2 to move. As the mounting plate 2 moves, the supporting heat exchange plate at the target position a1 comes into contact with the pulley 6 and is pressed against the surface of the hanging pipe a by the pulley 6, ensuring the accuracy of the welding position of the supporting heat exchange plate 4.

[0081] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A welding and positioning fixture for waste heat boiler hanging pipes, characterized in that, include: Base (1), fixedly installed; The mounting assembly is used to fix the position of the hanging pipe; it includes a mounting plate (2) which is slidably connected to the base (1) and the sliding direction is parallel to the axis of the hanging pipe. The mounting plate (2) is provided with a limiting assembly for limiting the position of the supporting heat exchange fins (4). A driving component for driving the sliding of the mounting plate (2); Material box (3), fixedly set, used to place the support heat exchange plate (4) to be grabbed; The gripping and conveying assembly is used to convey the supporting heat exchange plates (4) in the material box (3) one by one to the target position (a1) of the hanging pipe and confine them in the limiting assembly; The limiting component includes a fixedly arranged protruding column unit, the protruding column unit includes a limiting protruding column (5) for clamping the supporting heat exchange plate (4), and the protruding column unit is arranged in a plurality of them along the axis of the hanging pipe and corresponds one-to-one with the target position (a1). The limiting component also includes an adsorption component for adsorbing the supporting heat exchange plate (4) onto the target position (a1); The mounting plate (2) is provided with a magnetic suction groove (25), which is located below the target position (a1). The adsorption component includes magnetic suction points (26) located in the magnetic suction groove (25). The magnetic suction points (26) correspond one-to-one with the target position (a1). The magnetic suction points (26) are set for electromagnetic adsorption control. The welding station of the base (1) is provided with a clamping component, which is used to clamp the supporting heat exchange plate (4) against the hanging pipe during spot welding; The clamping assembly includes a pulley (6), the straight distance between the feed end of the pulley (6) and the hanging pipe is greater than the length of the supporting heat exchange plate (4), and the straight distance between the discharge end of the pulley (6) and the hanging pipe is equal to the length of the supporting heat exchange plate (4).

2. The welding and positioning fixture for waste heat boiler hanging pipes according to claim 1, characterized in that, The material box (3) includes a limiting sidewall (31) for limiting the support heat exchange plate (4), and the limiting sidewall (31) is provided with a folded edge (32) that matches the folding angle of the support heat exchange plate (4).

3. The welding and positioning fixture for waste heat boiler hanging pipes according to claim 2, characterized in that, The gripping assembly includes a gripping arm (7) and a switching assembly for driving the gripping arm (7) to switch between the material box (3) and the target position (a1). The end of the gripping arm (7) is provided with an extraction member for extracting one of the supporting heat exchange plates (4).

4. The welding and positioning fixture for waste heat boiler hanging pipes according to claim 3, characterized in that, The extraction component includes an electromagnetic plate (71) fixedly connected to the gripping arm (7). A convex ring (72) is fixedly provided below the electromagnetic plate (71) and is positioned and engaged with the hoisting groove (41) of the supporting heat exchange plate (4). The thickness of the convex ring (72) is not greater than the thickness of the supporting heat exchange plate (4).

5. The welding and positioning fixture for waste heat boiler hanging pipes according to claim 4, characterized in that, The switching assembly includes a rotating assembly for driving the gripper arm (7) to rotate and a lifting assembly for driving the gripper arm (7) to lift. A base (8) is fixedly provided on the side wall of the base (1), and a lifting plate (81) is lifted and lowered on the base (8). The gripper arm (7) is rotatably connected to the lifting plate (81). The rotating assembly includes a rotating motor (82), which is fixedly connected to the lifting plate (81). The rotating shaft of the gripper arm (7) is connected to the output shaft of the rotating motor (82). The lifting assembly includes a lifting motor (83) fixedly connected to the base (8) and a lifting screw (84) rotatably connected to the base (8). The lifting screw (84) is driven to rotate by the lifting motor (83), and the lifting plate (81) is threadedly connected to the lifting screw (84).

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