A special welding positioning device for height limiting frame

Abstract

This invention proposes a dedicated welding positioning device for height restriction frames, belonging to the field of height restriction frame welding technology. The device includes a tilting frame, a load-bearing plate, a column positioning frame, and a crossbeam positioning frame. The tilting frame is configured to be driven to rotate around its central axis to switch between vertical and horizontal states. Two load-bearing plates are fixedly installed on each tilting frame to support and position the bottom beam and two sets of diagonal braces. The load-bearing plates are configured to rotate synchronously with the tilting frame to switch between vertical and horizontal states. The column positioning frame supports and positions the columns; the crossbeam positioning frame supports and positions the crossbeams; an adjustment push plate is installed on the tilting frame to push the bottom beam to move along its axial direction; an adjustment push plate is also installed on the crossbeam positioning frame, and this adjustment push plate is configured to switch postures to selectively push the columns or crossbeams to move along their axial direction. Specifically, this invention provides a dedicated welding positioning device for height restriction frames that can switch welding states, improving the convenience of welding operations.

Description

Technical Field

[0001] This invention belongs to the field of height restriction frame welding technology, specifically referring to a special welding positioning device for height restriction frames. Background Technology

[0002] Height restriction barriers are commonly used safety protection facilities in road traffic, typically constructed from welded steel structural components such as base beams, columns, diagonal braces, and crossbeams. During the manufacturing process, the welding positioning accuracy between the various components directly affects the overall structural strength and operational safety of the height restriction barrier.

[0003] Currently, welding operations on height restriction frames are challenging due to the frame's height, especially the connection between the columns and the upper beam, which is located at a relatively high position. This limited welding space makes the work difficult and compromises the consistency of weld quality. Furthermore, existing welding positioning devices often use fixed fixtures, which prevent fine-tuning of the relative positions of components after placement, resulting in insufficient positioning accuracy. Additionally, components are prone to shifting during welding, further affecting weld quality.

[0004] In addition, existing positioning devices can usually only keep the components in a single posture and cannot flexibly switch the working posture of the components according to the different needs of the welding parts. This results in poor convenience of welding operations in different processes and makes it difficult to balance welding efficiency and positioning accuracy throughout the entire process. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the purpose of the present invention is to provide a special welding positioning device for height restriction frames, so as to at least partially solve the problems mentioned in the background art.

[0006] The technical solution adopted by this invention is as follows: This invention proposes a special welding positioning device for height restriction frames, used for welding and positioning a height restriction frame composed of a base beam, columns, diagonal braces, and crossbeams, comprising: Two sets of symmetrically arranged tilting frames are configured to be driven to rotate around their central axis, switching between vertical and horizontal states by 90°. Two load-bearing plates are fixedly installed on each set of the tilting frame to support and position the bottom beam and the two sets of diagonal braces. The load-bearing plates are configured to rotate synchronously with the tilting frame to switch between vertical and horizontal states. Two sets of symmetrically arranged column positioning frames are respectively set with two sets of flipping frames to support and position the columns; The beam positioning frame is vertically installed between two sets of column positioning frames to support and position the beam. The tilting frame is equipped with an adjustment push plate for pushing the bottom beam to move along its axial direction; the crossbeam positioning frame is also equipped with an adjustment push plate, which is configured to switch postures to selectively push the column or crossbeam to move along its axial direction. The special welding positioning device for the height restriction frame is configured with two welding positioning working modes: First working mode: When the load-bearing plate is in a horizontal state, the bottom beam and the two sets of diagonal braces are positioned in a horizontal position to facilitate welding operations between the bottom beam, diagonal braces and columns; Second working mode: When the load-bearing plate rotates to a vertical position with the tilting frame, the bottom beam and the two sets of diagonal braces are simultaneously driven to a vertical position to facilitate the welding operation between the column and the beam.

[0007] Furthermore, the tilting frame is configured to be driven by a drive mechanism to reciprocate 90° around its horizontal axis between a horizontal and a vertical state, thereby causing the load-bearing plate to switch between a vertical and a horizontal state.

[0008] Furthermore, the driving mechanism is a servo motor, and the center position of the tilting frame is connected to the output shaft of the servo motor.

[0009] Furthermore, the crossbeam includes an upper crossbeam and a lower crossbeam, and the crossbeam positioning frame is provided in two sets, namely an upper crossbeam positioning frame and a lower crossbeam positioning frame. The upper crossbeam positioning frame and the lower crossbeam positioning frame are used to support and position the upper crossbeam and the lower crossbeam, respectively. The adjusting push plate is installed on the upper crossbeam positioning frame and is used to push the upper crossbeam to move for position adjustment.

[0010] Furthermore, the column positioning frame includes two discontinuous support parts, the lower crossbeam positioning frame corresponds to the discontinuity between the two support parts, and the upper crossbeam positioning frame is located at the end of the column positioning frame away from the flipping frame.

[0011] Furthermore, the tilting frame is provided with an adjustment cavity, and the adjustment cavity is provided with an adjustment assembly. The adjustment assembly includes an adjustment motor, an adjustment screw, and a drive plate. The adjustment motor is mounted on the tilting frame, and a driving bevel gear is fixedly mounted on its output shaft. The adjustment screw is rotatably mounted in the adjustment cavity, and a driven bevel gear is fixedly mounted on it. The driven bevel gear meshes with the driving bevel gear. The two ends of the adjustment screw are symmetrically provided with two sets of threaded sections with opposite threads. A guide groove is provided on the side wall of the adjustment cavity. There are two sets of drive plates, and each set of drive plates is provided with a guide protrusion. The guide protrusion is engaged and slidably mounted in the guide groove. The two sets of drive plates are connected to the threaded set of the adjustment screw through threads. The two sets of drive plates are driven by the adjustment screw to slide in the adjustment cavity. An adjustment column is provided on the drive plate. The adjustment column penetrates the side wall of the adjustment cavity and extends to the outside of the tilting frame. The adjustment push plate is fixedly connected to the extended end of the adjustment column.

[0012] Furthermore, the upper crossbeam positioning frame is equipped with a directional adjustment motor, the output shaft of the directional adjustment motor is equipped with a mounting bracket, the mounting bracket is equipped with an electric telescopic rod, and the adjusting push plate is connected to the free end of the electric telescopic rod; the directional adjustment motor is configured to controllably and alternately perform forward 90° rotation and reverse 90° rotation, so that the adjusting push plate switches between the position facing the column and the position facing the crossbeam.

[0013] Furthermore, the directional motor is a servo motor; the electric telescopic rod has two preset telescopic strokes, wherein the first telescopic stroke is adapted to the positioning length of the column, and the second telescopic stroke is adapted to the positioning length of the crossbeam.

[0014] Furthermore, the bottom beam, uprights, diagonal braces, and crossbeams are all steel pipe structures; the adjusting push plate is equipped with an air pump and a tensioning column, the tensioning column has a tensioning cavity, the air pump is connected to the tensioning cavity through an air pipe, the tensioning column has multiple sets of tensioning cylinders distributed circumferentially, the tensioning cylinders are connected to the tensioning cavity, the tensioning rod is slidably installed in the tensioning cylinder, the tensioning rod has a piston at one end near the axis of the tensioning cavity, and the other end of the tensioning rod has a tensioning plate.

[0015] Furthermore, the air pump is a dual-purpose pump for both filling and pumping.

[0016] Furthermore, positioning slots are provided on the load-bearing plate, column positioning frame, and beam positioning frame. The positioning slots on the load-bearing plate include bottom beam positioning slots perpendicular to the load-bearing plate and diagonal brace positioning slots set at an inclined angle to the load-bearing plate. The two sets of bottom beam positioning slots on the load-bearing plate are used to support the two ends of the positioning bottom beam, and the two sets of diagonal brace positioning slots are used to support and position the two sets of diagonal braces, respectively. The positioning slots on the column positioning frame are used to support and position the column, and the positioning slots on the beam positioning frame are used to support and position the beam.

[0017] Furthermore, ball bearings are rotatably installed in the positioning grooves of the bottom beam, the column positioning frame, and the upper crossbeam positioning frame.

[0018] The technical solution provided by this invention has the following beneficial effects: (1) By setting up a rotatable flipping frame and a load-bearing plate that rotates synchronously with it, the bottom beam, diagonal brace and column can be flexibly switched between horizontal and vertical states: in the horizontal state, the bottom beam and diagonal brace are in a low position, which is convenient for welding operations and avoids the welding difficulty caused by working at height; in the vertical state, the column and beam are in a stable docking posture, which is convenient for precise positioning; the switching between the two modes significantly improves the convenience and quality consistency of welding operations.

[0019] (2) By setting adjustment push plates in multiple places, the bottom beam, column and crossbeam can be moved along their own axis direction respectively, so as to realize the precise fine adjustment of the relative position of each component. This effectively overcomes the problem that traditional fixed fixtures cannot be adjusted and the positioning accuracy is insufficient, thereby greatly improving the accuracy of the docking positioning between each welded component and the consistency of the welded product. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a special welding positioning device for height restriction frames proposed in an embodiment of the present invention; Figure 2 for Figure 1 A magnified view of part A; Figure 3 This is a schematic diagram of the structure of a special welding positioning device for height restriction frames proposed in an embodiment of the present invention, which supports and positions the height restriction frame. Figure 4 This is a schematic diagram of the horizontal state of the tilting frame of a special welding positioning device for height restriction frames proposed in an embodiment of the present invention; Figure 5 This is a three-dimensional sectional view of the tilting frame of a special welding positioning device for height restriction frames proposed in an embodiment of the present invention. Figure 6 This is a side view of the three-dimensional cross-sectional structure of the flipping frame of a special welding positioning device for height restriction frames proposed in an embodiment of the present invention. Figure 7 This is a side view of the cross-sectional structure of the support column and the flipping frame of a special welding positioning device for height restriction frames proposed in an embodiment of the present invention.

[0021] The components are as follows: 1. Tilting frame; 2. Load-bearing plate; 3. Column positioning frame; 4. Crossbeam positioning frame; 5. Adjusting push plate; 6. Upper crossbeam positioning frame; 7. Lower crossbeam positioning frame; 8. Adjusting cavity; 9. Adjusting motor; 10. Adjusting screw; 11. Drive plate; 12. Active bevel gear; 13. Driven bevel gear; 14. Guide groove; 15. Guide protrusion; 16. Adjusting column; 17. Direction adjustment motor; 18. Mounting frame; 19. Electric telescopic rod; 20. Air pump; 21. Tensioning column; 22. Tensioning cavity; 23. Tensioning cylinder; 24. Tensioning rod; 25. Piston; 26. Tensioning plate; 27. Positioning groove; 28. Ball bearing; 29. ​​Bottom beam; 30. Column; 31. Diagonal brace; 32. Upper crossbeam; 33. Lower crossbeam.

[0022] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0024] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments and 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 on the embodiments.

[0025] See Figure 1 and Figure 3 In this embodiment, the present invention provides a special welding positioning device for height restriction frames, used for welding and positioning a height restriction frame composed of a bottom beam 29, uprights 30, diagonal braces 31, and crossbeams. The device includes a tilting frame 1, a load-bearing plate 2, an upright positioning frame 3, and a crossbeam positioning frame 4. Two sets of tilting frames 1 are symmetrically arranged, configured to rotate 90° around their central axis to switch between vertical and horizontal states. Two sets of load-bearing plates 2 are fixedly installed on each set of tilting frames 1 to support and position the bottom beam 29 and the two sets of diagonal braces 31. The load-bearing plates 2 are configured to rotate synchronously with the tilting frames 1 to switch between vertical and horizontal states. Two sets of upright positioning frames 3 are respectively arranged corresponding to the two sets of tilting frames 1 to support and position the uprights 30. The crossbeam positioning frame 4 is vertically arranged between the two sets of upright positioning frames 3 to support and position the crossbeams.

[0026] The tilting frame 1 is equipped with an adjustment push plate 5, which is used to push the bottom beam 29 to move along its axial direction; the crossbeam positioning frame 4 is also equipped with an adjustment push plate 5, which is configured to switch postures to selectively push the column 30 or the crossbeam to move along its axial direction; each adjustment push plate 5 can move along the axial direction of the corresponding component to be welded in order to adjust the position and ensure positioning accuracy. The special welding positioning device for height restriction frames is configured with two welding positioning working modes: First working mode: When the load-bearing plate 2 is in a horizontal state, the bottom beam 29 and the two sets of diagonal braces 31 are positioned in a horizontal posture to facilitate the welding operation between the bottom beam 29, diagonal braces 31 and column 30. Second working mode: When the load-bearing plate 2 rotates to the vertical position with the tilting frame 1, the bottom beam 29 and the two sets of diagonal braces 31 are synchronously driven to the vertical position to facilitate the welding operation between the column 30 and the crossbeam.

[0027] See Figure 1 and Figure 4 In this embodiment, the tilting frame 1 is configured to be driven by a driving mechanism to reciprocate 90° around its horizontal axis between a horizontal state and a vertical state, so as to drive the load-bearing plate 2 to switch between a vertical state and a horizontal state.

[0028] In this embodiment, the driving mechanism is a servo motor, and the center position of the flipping frame 1 is connected to the output shaft of the servo motor.

[0029] See Figure 1 and Figure 3 In this embodiment, the crossbeam includes an upper crossbeam 32 and a lower crossbeam 33. The crossbeam positioning frame 4 is provided in two sets, namely an upper crossbeam positioning frame 6 and a lower crossbeam positioning frame 7. The upper crossbeam positioning frame 6 and the lower crossbeam positioning frame 7 are used to support and position the upper crossbeam 32 and the lower crossbeam 33, respectively. The adjusting push plate 5 is installed on the upper crossbeam positioning frame 6 and is used to push the upper crossbeam 32 to move for position adjustment. The lower crossbeam positioning frame 7 does not need to be provided with the adjusting push plate 5, and the installation position of the lower crossbeam 33 is limited by the two sets of columns 30.

[0030] See Figure 1 and Figure 3 In this embodiment, the column positioning frame 3 includes two discontinuous support parts. The lower crossbeam positioning frame 7 corresponds to the discontinuity between the two support parts. The upper crossbeam positioning frame 6 is located at the end of the column positioning frame 3 away from the flipping frame 1. Through the discontinuous arrangement of the column positioning frame 3, both ends of the lower crossbeam 33 can contact the column 30 to realize subsequent welding operations.

[0031] See Figures 5-7In this embodiment, the tilting frame 1 is provided with an adjustment cavity 8, and the adjustment cavity 8 is provided with an adjustment assembly. The adjustment assembly includes an adjustment motor 9, an adjustment screw 10, and a drive plate 11. The adjustment motor 9 is mounted on the tilting frame 1, and a driving bevel gear 12 is fixedly mounted on its output shaft. The adjustment screw 10 is rotatably mounted in the adjustment cavity 8, and a driven bevel gear 13 is fixedly mounted on it. The driven bevel gear 13 meshes with the driving bevel gear 12. The two ends of the adjustment screw 10 are symmetrically provided with two sets of threaded sections with opposite threads. The side of the adjustment cavity 8... The wall is provided with a guide groove 14, and there are two sets of drive plates 11. Each set of drive plates 11 is provided with a guide protrusion 15. The guide protrusion 15 is engaged and slidably disposed in the guide groove 14. The two sets of drive plates 11 are connected to the threaded group of the adjusting screw 10 by threads. The two sets of drive plates 11 are driven by the adjusting screw 10 to slide in the adjusting cavity 8. The drive plate 11 is provided with an adjusting column 16. The adjusting column 16 penetrates the side wall of the adjusting cavity 8 and extends to the outside of the flipping frame 1. The adjusting push plate 5 is fixedly connected to the extended end of the adjusting column 16.

[0032] When the adjusting motor 9 drives the active bevel gear 12 to rotate, it drives the adjusting screw 10 to rotate through the driven bevel gear 13, thereby driving the two sets of driving plates 11 to move towards or away from each other along the axial direction of the adjusting screw 10 under the constraint of the guide slide groove 14, and driving the two sets of adjusting push plates 5 to move synchronously through the adjusting column 16, so as to push the bottom beam 29 from both sides to center it.

[0033] See Figure 1 and Figure 2 In this embodiment, the upper crossbeam positioning frame 6 is provided with a directional motor 17, the output shaft of the directional motor 17 is provided with a mounting frame 18, the mounting frame 18 is provided with an electric telescopic rod 19, and the adjusting push plate 5 is connected to the free end of the electric telescopic rod 19; the directional motor 17 is configured to controllably and alternately perform forward 90° rotation and reverse 90° rotation, so that the adjusting push plate 5 switches between the position facing the column 30 and the position facing the crossbeam.

[0034] See Figures 1-3 In this embodiment, the directional motor 17 is a servo motor; the electric telescopic rod 19 has two preset telescopic strokes, wherein the first telescopic stroke is adapted to the positioning length of the column 30, and the second telescopic stroke is adapted to the positioning length of the crossbeam.

[0035] After the electric pole is powered on, the electric telescopic pole 19 first extends to the fully extended state to ensure that the adjusting push plate 5 is away from the column 30 or beam it faces. By controlling the electric telescopic pole 19 to extend and retract to the first extension stroke and the second stroke, the adjusting push plate 5 is driven to contact the column 30 or beam on its surface.

[0036] See Figures 1-3In this embodiment, the bottom beam 29, the column 30, the diagonal brace 31, and the crossbeam are all steel pipe structures; the adjusting push plate 5 is equipped with an air pump 20 and a tensioning column 21, the tensioning column 21 is equipped with a tensioning cavity 22, the air pump 20 is connected to the tensioning cavity 22 through an air pipe, the tensioning column 21 is equipped with multiple sets of tensioning cylinders 23 distributed circumferentially, the tensioning cylinders 23 are connected to the tensioning cavity 22, the tensioning rod 24 is slidably provided in the tensioning cylinder 23, the end of the tensioning rod 24 near the axis of the tensioning cavity 22 is equipped with a piston 25, and the other end of the tensioning rod 24 is equipped with a tensioning plate 26; the air pump 20 is a dual-purpose air pump for pumping and filling.

[0037] In use, when the adjusting push plate 5 moves close to the corresponding steel pipe, the supporting column 21 is embedded inside the steel pipe. After the adjusting push plate 5 completes the position adjustment, the air pump 20 pressurizes the steel pipe to achieve internal support and positioning. When the steel pipe needs to be positioned, the air pump 20 pressurizes the supporting chamber 22, driving the piston 25 to slide the supporting rod 24 outward, so that the supporting plate 26 presses against the inner wall of the steel pipe. When the positioning needs to be released, the air pump 20 draws air from the supporting chamber 22 to reduce the pressure, driving the piston 25 to slide the supporting rod 24 inward, so that the supporting plate 26 disengages from the inner wall of the steel pipe.

[0038] See Figures 1-7 In this embodiment, positioning grooves 27 are provided on the load-bearing plate 2, the column positioning frame 3, and the crossbeam positioning frame 4. The positioning grooves 27 on the load-bearing plate 2 include bottom beam positioning grooves 27 perpendicular to the load-bearing plate 2, and diagonal brace positioning grooves 27 set at an inclined angle to the load-bearing plate 2. The two sets of bottom beam positioning grooves 27 on the load-bearing plate 2 are used to support the two ends of the positioning bottom beam 29, and the two sets of diagonal brace positioning grooves 27 are used to support the two sets of diagonal braces 31. The positioning grooves 27 on the column positioning frame 3 are used to support the positioning column 30, and the positioning grooves 27 on the crossbeam positioning frame 4 are used to support the positioning crossbeam. Roller balls 28 are rotatably installed in the bottom beam positioning grooves 27, the positioning grooves 27 on the column positioning frame 3, and the positioning grooves 27 on the upper crossbeam positioning frame 6. By setting the roller balls 28, the resistance of the adjusting push plate 5 in moving the bottom beam 29, the column 30, and the upper crossbeam 32 is reduced, thereby improving its smoothness and stability.

[0039] The welding positioning device for height restriction frames provided in this embodiment is used as follows: (a) Positioning and centering adjustment of bottom beam 29 First, adjust the tilting frame 1 to a horizontal position so that the load-bearing plate 2 is in a horizontal posture. Place both ends of the bottom beam 29 into the bottom beam positioning grooves 27 on the load-bearing plates 2 of the two tilting frames 1 respectively.

[0040] The adjusting motor 9 is started. Through the meshing of the driving bevel gear 12 and the driven bevel gear 13, the adjusting motor 9 drives the adjusting screw 10 to rotate, which in turn drives the two sets of drive plates 11 to move towards each other along the guide groove 14. The drive plates 11, through the adjusting column 16, drive the two sets of adjusting push plates 5 to simultaneously approach and push the bottom beam 29 from both sides, thus centering the bottom beam 29 horizontally and completing its axial positioning. Subsequently, the air pump 20 on the adjusting push plate 5 is started to pressurize the tensioning cavity 22, causing the tensioning rod 24 to extend outwards. The tensioning plate 26 presses against the inner wall of the steel pipe of the bottom beam 29, achieving circumferential fixation of the bottom beam 29 and preventing rotation during welding.

[0041] (II) Positioning and welding of column 30 Two uprights 30 are placed on two sets of upright positioning frames 3 respectively. The directional motor 17 on the upper crossbeam positioning frame 6 is controlled to rotate 90° in the forward direction, so that the adjusting push plate 5 at the free end of the electric telescopic rod 19 faces the end of the upright 30 away from the flipping frame 1. The electric telescopic rod 19 is controlled to retract to the first telescopic stroke position (adapted to the positioning length of the upright 30), so that the adjusting push plate 5 contacts the end of the upright 30, and the upright 30 continues to be pushed to move along the upright positioning frame 3 until the other end of the upright 30 is accurately aligned with the predetermined position in the middle of the bottom beam 29. The air pump 20 on the adjusting push plate 5 on the upper crossbeam positioning frame 6 controls the tensioning plate 26 to press against the inner wall of the steel pipe of the upright 30, so as to achieve circumferential fixation of the upright 30, ensure the positioning stability of the upright 30 and the bottom beam 29, and spot weld the contact point between the bottom beam 29 and the upright 30.

[0042] (III) Positioning and welding of diagonal brace 31 Place the two sets of diagonal braces 31 into the diagonal brace positioning slots 27 on the two sets of load-bearing plates 2, so that the two ends of the diagonal braces 31 contact the predetermined connection points of the corresponding columns 30 and bottom beams 29. After confirming that the positions are correct, weld the two ends of the diagonal braces 31 to fix the diagonal braces 31 to the columns 30 and bottom beams 29.

[0043] During the above welding process, the welding of the bottom beam 29, column 30, and diagonal brace 31 is carried out in a horizontal state to facilitate welding operations. After the welding of the bottom beam 29, column 30, and diagonal brace 31 is completed, the positioning restriction on column 30 is released: the air pump 20 on the upper crossbeam positioning frame 6 is controlled to draw air and reduce pressure, causing the tension rod 24 to retract and releasing the tensioning and positioning of column 30; then the electric telescopic rod 19 on the upper crossbeam positioning frame 6 is controlled to extend, pulling the tension rod 21 out of the steel pipe of column 30 and moving the adjusting push plate 5 away from column 30; then the directional motor 17 is started to rotate 90°, so that the adjusting push plate 5 faces the upper crossbeam 32.

[0044] (iv) Flip to vertical position The drive mechanism is activated to rotate the tilting frame 1 90° in the opposite direction around its horizontal axis, switching the tilting frame 1 from a horizontal to a vertical state. The load-bearing plate 2 drives the already welded bottom beam 29, diagonal brace 31, and column 30 to rotate synchronously to a vertical position. At this time, the bottom beam 29 rotates from a horizontal to a vertical state, and the column 30 remains in the positioning groove 27 of the column positioning frame 3; the bottom beam 29 and diagonal brace 31 supported by the two sets of tilting frames 1 are in a vertical and parallel state.

[0045] (v) Positioning and welding of the upper crossbeam 32 Place the upper crossbeam 32 in the positioning slot 27 of the upper crossbeam positioning frame 6. At this time, since the adjusting push plate 5 has been facing the upper crossbeam 32 via the adjusting motor 17 after step (three), drive the electric telescopic rod 19 to retract to the second telescopic stroke position (adapted to the crossbeam positioning length). The electric telescopic rod 19 drives the adjusting push plate 5 to contact the end of the upper crossbeam 32 and pushes the upper crossbeam 32 to move along its axis, adjusting the horizontal centering position of the upper crossbeam 32 so that both ends of the upper crossbeam 32 are accurately aligned with the predetermined positions on the top of the two columns 30. After the position is adjusted, start the air pump 20 on the adjusting push plate 5 of the upper crossbeam positioning frame 6 to pressurize the tensioning cavity 22, causing the tensioning rod 24 to extend outward and the tensioning plate 26 to press against the inner wall of the steel pipe of the upper crossbeam 32, thus achieving circumferential fixation of the upper crossbeam 32. Finally, weld the connection between the upper crossbeam 32 and the columns 30 to fix the upper crossbeam 32 to the two columns 30.

[0046] (vi) Positioning and welding of the lower crossbeam 33 The lower crossbeam 33 is placed in the positioning groove 27 of the lower crossbeam positioning frame 7 (the lower crossbeam positioning frame 7 is located at the interval between the two sets of column positioning frames 3). Since there is no adjustment push plate 5 on the lower crossbeam positioning frame 7, the position of the lower crossbeam 33 is defined by the positioning groove 27 and the two sets of columns 30, so that the two ends of the lower crossbeam 33 naturally contact the middle or lower predetermined positions of the two columns 30. After confirming the position, the connection between the lower crossbeam 33 and the columns 30 is welded to complete the welding and positioning work of the entire height restriction frame body.

[0047] (vii) Removal of finished product After all welding is completed, the air pumps 20 on each adjusting push plate 5 are controlled to reduce air pressure, causing the tension rod 24 to extend to its initial state and the tension plate 26 to detach from the inner wall of the steel pipe. The welded height restriction frame is then removed from the device, yielding the finished height restriction frame.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] The embodiments have been described above, and such description is not restrictive. The figures shown are only one embodiment, and the actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit, such design should fall within the scope of protection.

Claims

1. A height restriction bar specific welding positioning device, characterized by, include: Two sets of symmetrically arranged flipping frames (1) are configured to be driven to flip and switch between vertical and horizontal states at a 90° angle; Two sets of load-bearing plates (2) are fixedly installed on each set of the flipping frame (1) to support and position the bottom beam (29) and the diagonal brace (31). Two sets of column positioning frames (3) are used to support and position the columns (30); The beam positioning frame (4) is used to support and position the beam; The tilting frame (1) is equipped with an adjustment push plate (5) for pushing the bottom beam (29) to move along its axial direction; the crossbeam positioning frame (4) is also equipped with an adjustment push plate (5), which is configured to switch postures to selectively push the column (30) or the crossbeam to move along its axial direction. The special welding positioning device for the height restriction frame is configured with two welding positioning working modes: First working mode: When the load-bearing plate (2) is in a horizontal state, the bottom beam (29) and the two sets of diagonal braces (31) are positioned in a horizontal posture for welding positioning between the bottom beam (29), diagonal braces (31) and column (30); Second working mode: When the load-bearing plate (2) rotates to the vertical state with the flipping frame (1), the bottom beam (29) and the two sets of diagonal braces (31) are synchronously driven to the vertical position for welding positioning between the column (30) and the crossbeam.

2. The special welding positioning device for height restriction frames according to claim 1, characterized in that, The tilting frame (1) is configured to be driven to reciprocate 90° around its horizontal axis between a horizontal state and a vertical state, so as to drive the load-bearing plate (2) to switch between a vertical state and a horizontal state.

3. The special welding positioning device for height restriction frames according to claim 1, characterized in that, The crossbeam includes an upper crossbeam (32) and a lower crossbeam (33). The crossbeam positioning frame (4) is provided in two sets, namely an upper crossbeam positioning frame (6) and a lower crossbeam positioning frame (7). The upper crossbeam positioning frame (6) and the lower crossbeam positioning frame (7) are used to support and position the upper crossbeam (32) and the lower crossbeam (33), respectively. The adjusting push plate (5) is installed on the upper crossbeam positioning frame (6) and is used to push the upper crossbeam (32) to move for position adjustment.

4. The special welding positioning device for height restriction frames according to claim 3, characterized in that, The column positioning frame (3) includes two discontinuous support parts. The lower crossbeam positioning frame (7) corresponds to the discontinuity between the two support parts. The upper crossbeam positioning frame (6) is located at the end of the column positioning frame (3) away from the flipping frame (1).

5. The special welding positioning device for height restriction frames according to claim 1, characterized in that, The flipping frame (1) is provided with an adjustment cavity (8), and two sets of drive plates (11) are slidably arranged in the adjustment cavity (8). An adjustment column (16) is provided on the drive plate (11). The adjustment column (16) passes through the side wall of the adjustment cavity (8) and extends to the outside of the flipping frame (1). The adjustment push plate (5) is fixedly connected to the extended end of the adjustment column (16).

6. The special welding positioning device for height restriction frames according to claim 3, characterized in that, The upper crossbeam positioning frame (6) is equipped with a directional motor (17), and the output shaft of the directional motor (17) is equipped with a mounting frame (18). The mounting frame (18) is equipped with an electric telescopic rod (19). The adjusting push plate (5) is connected to the free end of the electric telescopic rod (19). The directional motor (17) is configured to controllably and alternately perform forward 90° rotation and reverse 90° rotation so that the adjusting push plate (5) switches between the position facing the column (30) and the position facing the crossbeam.

7. The special welding positioning device for height restriction frames according to claim 6, characterized in that, The electric telescopic pole (19) has two preset telescopic strokes, wherein the first telescopic stroke is adapted to the positioning length of the column (30) and the second telescopic stroke is adapted to the positioning length of the crossbeam.

8. The special welding positioning device for height restriction frames according to claim 1, characterized in that, The adjusting push plate (5) is equipped with an air pump (20) and a tensioning column (21). The tensioning column (21) is equipped with a tensioning cavity (22). The air pump (20) is connected to the tensioning cavity (22) through an air pipe. Multiple tensioning cylinders (23) are arranged circumferentially on the tensioning column (21). The tensioning cylinders (23) are connected to the tensioning cavity (22). A tensioning rod (24) is slidably provided in the tensioning cylinder (23). A piston (25) is provided at one end of the tensioning rod (24) near the axis of the tensioning cavity (22). A tensioning plate (26) is provided at the other end of the tensioning rod (24).

9. The special welding positioning device for height restriction frames according to claim 1, characterized in that, Positioning slots (27) are provided on the load-bearing plate (2), the column positioning frame (3) and the beam positioning frame (4). The positioning slots (27) on the load-bearing plate (2) include bottom beam positioning slots (27) that are perpendicular to the load-bearing plate (2) and diagonal brace positioning slots (27) that are inclined at an angle to the load-bearing plate (2). The two sets of bottom beam positioning slots (27) on the load-bearing plate (2) are used to support the two ends of the positioning bottom beam (29). The two sets of diagonal brace positioning slots (27) are used to support the positioning of the two sets of diagonal braces (31). The positioning slots (27) on the column positioning frame (3) are used to support the positioning column (30). The positioning slots (27) on the beam positioning frame (4) are used to support the positioning beam.

10. The special welding positioning device for height restriction frames according to claim 9, characterized in that, Ball bearings (28) are rotatably installed in the positioning groove (27) of the bottom beam, the positioning groove (27) of the column positioning frame (3), and the positioning groove (27) of the upper crossbeam positioning frame (6).

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