Welding construction device for foldable pre-embedded sleeve set

By using a transmission gear set and a slide block in the welding construction device for pre-embedded sleeve assemblies to achieve synchronous movement of the positioning frame, the problems of low welding accuracy and efficiency of sleeve assemblies are solved. This enables precise alignment of the sleeve center and rapid adjustment of the spacing, thereby improving construction quality and efficiency.

CN223889278UActive Publication Date: 2026-02-10MCC TIANGONG GROUP TIANJIN CO LTD
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Patent Information

Application Number
CN202520293050.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-24
Publication Date
2026-02-10
Estimated Expiration
2035-02-24

AI Technical Summary

Technical Problem

In existing technologies, the positioning and welding accuracy and efficiency of pre-embedded sleeve assemblies are difficult to control, especially when the sleeve diameters are different, which affects the project quality and schedule.

Method used

A welding construction device including a construction platform, horizontal guide rail, positioning frame and material placement frame is adopted. The positioning frame is moved synchronously through symmetrically arranged transmission gear set and slide block to ensure that the centers of multiple pre-embedded sleeves are collinear and the spacing is precisely controlled.

Benefits of technology

This improved the welding precision and efficiency of the pre-embedded sleeve assembly, ensured the alignment and spacing accuracy of multiple sleeve centers, and enhanced construction quality and efficiency.

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Abstract

The utility model provides a welding construction device for a pre-embedded sleeve group, which comprises a construction platform, a horizontal guide rail and a welding device, wherein the horizontal guide rail is arranged on the construction platform; the two groups of positioning frames are oppositely arranged and can synchronously move along opposite directions so as to be close to or far away from each other; the material placing frame is located on the construction platform and can move in the direction perpendicular to the horizontal guide rail; wherein the extending direction of the horizontal guide rail is perpendicular to the relative movement direction of the two sets of positioning frames, and the positioning frames are connected with the horizontal guide rail in a sliding mode and can slide in the extending direction of the horizontal guide rail. According to the utility model, the two groups of positioning frames can synchronously move in opposite directions through the two groups of first transmission gear sets which are symmetrically arranged, the two groups of positioning frames can synchronously move along the horizontal guide rails through the arrangement of the sliding seats, and the centers of a plurality of pre-embedded sleeves are collinear and the distance between the pre-embedded sleeves can be accurately and quickly regulated and controlled through the cooperation of the two groups of positioning frames; and the construction quality and efficiency are improved.
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Description

Technical Field

[0001] This utility model relates to the field of welding construction technology for pre-embedded sleeve assemblies, and in particular to a welding construction device for foldable pre-embedded sleeve assemblies. Background Technology

[0002] In the field of construction engineering, the installation quality and efficiency of pre-embedded sleeves play a crucial role in the smooth progress and long-term stable operation of the entire project. When installing multiple pre-embedded sleeves, it is necessary to ensure their horizontality, verticality, and sleeve spacing. A common method is to first install multiple sleeves side-by-side, adjust the sleeve spacing, and then use connecting steel plates to weld each sleeve to a long angle steel. During construction and installation, positioning can be achieved by laying out lines on the long angle steel or a small number of sleeves.

[0003] However, due to limitations in experience and equipment, the accuracy of manual welding is currently low. In particular, when the diameters of the sleeves in the pre-embedded sleeve group are different, the positioning welding accuracy and efficiency are even more difficult to control, which seriously affects the project quality and schedule. Utility Model Content

[0004] The purpose of this invention is to provide a welding construction device for a foldable pre-embedded sleeve assembly to solve the problems mentioned above.

[0005] The technical solution adopted in this utility model is: a welding construction device for pre-embedded sleeve assembly, which includes:

[0006] Construction platform, wherein the construction platform is equipped with horizontal guide rails;

[0007] Two sets of positioning frames are arranged opposite each other, and they can move synchronously in opposite directions to move closer to or further away from each other;

[0008] The material placement rack is located on the construction platform and can move along a direction perpendicular to the horizontal guide rail;

[0009] The horizontal guide rail extends in a direction perpendicular to the direction of relative movement of the two sets of positioning frames. The positioning frame is slidably connected to the horizontal guide rail and can slide along the extension direction of the horizontal guide rail.

[0010] Furthermore, the positioning frame includes a first positioning beam, and the opposite ends of the two sets of first positioning beams in the two sets of positioning frames are respectively provided with arc-shaped positioning grooves; the bottom surfaces of the two sets of first positioning beams are respectively provided with transmission racks, and the two sets of transmission racks are respectively meshed with and connected to a first transmission gear set. The two sets of first transmission gear sets are symmetrically arranged and connected to the drive handle through a second transmission gear set.

[0011] Furthermore, the first transmission gear set includes a plurality of first transmission gears connected by a first synchronous belt;

[0012] In the welding construction device, at least two of the first transmission gears are meshed and connected, and are respectively connected to different first positioning beams;

[0013] The second transmission gear set includes a plurality of second transmission gears connected by a second synchronous belt, and at least one of the second transmission gears and the first transmission gear are coaxially fixedly connected.

[0014] Furthermore, the welding construction device includes a slide block, which is slidably connected to the horizontal guide rail and / or the construction platform, and the first transmission gear set and the second transmission gear set are mounted on the slide block.

[0015] Furthermore, the slide includes a first C-shaped portion and a second C-shaped portion arranged opposite to each other, and a straight portion for connecting the first C-shaped portion and the second C-shaped portion. Two sets of positioning frames are respectively mounted on the first C-shaped portion and the second C-shaped portion, and a set of opposite side ends of the construction platform are respectively inserted into the openings of the first C-shaped portion and the second C-shaped portion.

[0016] Furthermore, the first C-shaped portion has the same configuration as the second C-shaped portion, and a limiting block is provided on the first C-shaped portion that slides against the side of the first positioning beam.

[0017] Furthermore, the material placement rack includes two sets of second positioning beams, which are located on both sides of the longitudinal direction of the horizontal guide rail. The two ends of the longitudinal direction of the second positioning beams are respectively provided with a material placement plate and an adjusting push rod, and the adjusting push rod is used to connect the two sets of second positioning beams.

[0018] Furthermore, the construction platform is provided with an installation block, and the installation block is provided with a sliding groove. The extension direction of the sliding groove is perpendicular to the horizontal guide rail, and the second positioning beam is slidably disposed in the sliding groove.

[0019] Furthermore, the side wall of the horizontal guide rail is provided with scale lines to indicate the distance the positioning frame slides along the horizontal guide rail.

[0020] Furthermore, the bottom of the construction platform is provided with foldable support legs, which include columns rotatably connected to the construction platform and X-shaped struts for connecting adjacent columns.

[0021] The beneficial effects of this utility model are as follows: by using two sets of first transmission gears arranged symmetrically, the two sets of positioning frames can move synchronously towards each other; by using the slide block, the two sets of positioning frames can move synchronously along the horizontal guide rail; and by using their coordination, the collinearity of the centers of multiple pre-embedded sleeves and the precise and rapid adjustment of the spacing between each pre-embedded sleeve can be achieved, thereby improving construction quality and efficiency. Attached Figure Description

[0022] Figure 1 This is an overall structural diagram of an embodiment of the present utility model;

[0023] Figure 2 This is a top view of the pre-embedded sleeve assembly welded using an embodiment of this utility model;

[0024] Figure 3 This is a perspective view of the structure above the construction platform in an embodiment of this utility model;

[0025] Figure 4 This is a first-view connection diagram of the slide and the positioning frame in an embodiment of this utility model;

[0026] Figure 5 This is a second-view connection diagram of the slide and the positioning frame in an embodiment of this utility model.

[0027] In the picture:

[0028] 1. Construction platform;

[0029] 2. Horizontal guide rail;

[0030] 3. Positioning frame; 3.1. First positioning beam; 3.2. Arc-shaped positioning groove;

[0031] 4. Material rack; 4.1. Second positioning beam; 4.2. Material tray; 4.3. Adjustable push rod;

[0032] 5. Transmission rack;

[0033] 6. First transmission gear set; 6.1. First synchronous belt; 6.2. First transmission gear;

[0034] 7. Second transmission gear set; 7.1. Second synchronous belt; 7.2. Second transmission gear;

[0035] 8. Drive handle;

[0036] 9. Slide; 9.1. First C-shaped part; 9.2. Second C-shaped part; 9.3. Straight part; 9.4. Limiting block;

[0037] 10. Mounting block; 10.1. Slide groove;

[0038] 11. Foldable outriggers; 11.1. Upright column; 11.1. X-shaped strut;

[0039] 12. Embedded sleeve assembly; 12.1. Long angle steel; 12.2. Connecting steel plate; 12.3. Embedded sleeve. Detailed Implementation

[0040] The technical solutions of the embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0041] In the description of the embodiments of this utility model, it should be understood that the terms "top," "bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be noted that unless otherwise expressly specified and limited, the terms "set" and "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model through specific circumstances.

[0042] Reference Appendix Figure 1-5 This embodiment provides a welding construction device for a pre-embedded sleeve assembly 12, which includes: a construction platform 1, a horizontal guide rail 2, a positioning frame 3, and a material placement rack 4. The horizontal guide rail 2, the positioning frame 3, and the material placement rack 4 are all mounted on the construction platform 1. Two sets of horizontal guide rails 2 and positioning frames 3 are arranged opposite each other. The two sets of positioning frames 3 can move synchronously in the opposite direction to move closer or further apart from each other. The extension direction of the horizontal guide rail 2 is perpendicular to the direction of relative movement of the two sets of positioning frames 3. The two sets of positioning frames 3 are slidably connected to different horizontal guide rails 2 and can slide along the extension direction of the horizontal guide rail 2. The material placement rack 4 is movably mounted on the construction platform 1 and can move in a direction perpendicular to the horizontal guide rail 2.

[0043] Before welding the pre-embedded sleeve assembly 12, place the long angle steel 12.1 on the material placement rack 4, and place one pre-embedded sleeve 12.3 on the construction platform 1. Move the two sets of positioning racks 3 towards each other to abut the outer wall of the pre-embedded sleeve 12.3. Then move the material placement rack 4 so that the distance between the long angle steel 12.1 and the pre-embedded sleeve 12.3 is equal to the length of the connecting steel plate 12.2 to be welded. Connect the two ends of the connecting steel plate 12.2 to the long angle steel 12.1 and the pre-embedded sleeve 12. 1. Weld the side wall of 12.3; then, according to the spacing between adjacent sleeves, slide the positioning frame 3 along the horizontal guide rail 2 so that the center of the positioning frame 3 corresponds to the center of the next pre-embedded sleeve 12.3, repeat the positioning welding procedure of the previous pre-embedded sleeve 12.3, and weld and fix the next pre-embedded sleeve 12.3, the next connecting steel plate 12.2 and the long angle steel 12.1; then repeat the previous step in sequence to complete the welding process of multiple pre-embedded sleeves 12.3 and long angle steel 12.1.

[0044] Since the two sets of positioning frames 3 can move synchronously in opposite directions to move closer or further away from each other, the centers of the multiple pre-embedded sleeves 12.3 that are pressed together by the two sets of positioning frames 3 are all at the midpoint of the line connecting the two sets of positioning frames 3. Regardless of whether the diameters of the pre-embedded sleeves 12.3 are the same, the centers of the multiple pre-embedded sleeves 12.3 can be quickly adjusted to be collinear, thereby improving the welding efficiency and accuracy of the pre-embedded sleeve group 12.

[0045] Reference Appendix Figure 3 The positioning frame 3 includes a first positioning beam 3.1. The opposite ends of the two sets of first positioning beams 3.1 in the two sets of positioning frames 3 are respectively provided with arc-shaped positioning grooves 3.2 to fit the shape of the outer wall of the sleeve and more accurately abut and center. The bottom surfaces of the two sets of first positioning beams 3.1 are respectively provided with transmission racks 5. The two sets of transmission racks 5 are respectively meshed with and connected to the first transmission gear set 6. The two sets of first transmission gear sets 6 are symmetrically arranged and connected to the drive handle 8 through the second transmission gear set 7.

[0046] By rotating the drive handle 8, the second transmission gear set 7 can drive the two sets of first transmission gear sets 6 to operate synchronously. Since the two sets of first transmission gear sets 6 are symmetrically arranged, the two sets of first positioning beams 3.1 can move synchronously and at equal distances under the drive of the transmission rack 5. Therefore, the two sets of first positioning beams 3.1 are always symmetrical about a fixed straight line (such as the center line of the construction platform 1), and thus the embedded sleeve 12.3 that it abuts against is also always symmetrical about the fixed straight line. Ultimately, regardless of whether the diameters of the multiple embedded sleeves 12.3 in the embedded sleeve set 12 are the same, this device can always quickly and accurately position the center of the embedded sleeve 12.3.

[0047] To ensure the two sets of first positioning beams 3.1 are always symmetrical and to improve construction accuracy, it is necessary to ensure that the sliding process of the two sets of first positioning beams 3.1 along the horizontal guide rail 2 is synchronous and equidistant. Therefore, in this embodiment, a sliding block 9 is constructed to connect the horizontal guide rail 2 and the construction platform 1. Specifically, it includes: a first C-shaped portion 9.1 and a second C-shaped portion 9.2 arranged opposite to each other, and a straight portion 9.3 for connecting the first C-shaped portion 9.1 and the second C-shaped portion 9.2. The two sets of first positioning beams 3.1 are respectively mounted on the first C-shaped portion 9.1 and the second C-shaped portion 9.2, and a set of opposite side ends of the construction platform 1 are respectively inserted into the openings of the first C-shaped portion 9.1 and the second C-shaped portion 9.2. The straight portion 9.3 enables the synchronous movement of the first C-shaped portion 9.1 and the second C-shaped portion 9.2, thereby enabling the two sets of first positioning beams 3.1 to move synchronously along the horizontal guide rail 2.

[0048] The horizontal guide rail 2 can slide against the first C-shaped portion 9.1 (or the second C-shaped portion 9.2) using a concave-convex fitting method, or it can slide through the first C-shaped portion 9.1 (or the second C-shaped portion 9.2) completely. This allows the horizontal guide rail 2 to smoothly guide the first C-shaped portion 9.1 and the second C-shaped portion 9.2. Since a set of opposite ends of the construction platform 1 are respectively inserted into the openings of the first C-shaped portion 9.1 and the second C-shaped portion 9.2, the smoothness of sliding can be improved if the inner surfaces of both the first C-shaped portion 9.1 and the second C-shaped portion 9.2 slide against the surface of the construction platform 1. Similarly, the smoothness of sliding can also be improved if the straight portion 9.3 slides against the surface of the construction platform 1. To avoid the straight portion 9.3 affecting the positioning and welding of the embedded sleeve 12.3, the straight portion 9.3 can be placed on the bottom surface of the construction platform 1.

[0049] In this embodiment, each first transmission gear set 6 includes several first transmission gears 6.2 connected by a first synchronous belt 6.1, and the second transmission gear set 7 includes several second transmission gears 7.2 connected by a second synchronous belt 7.1. In this welding construction device, at least two first transmission gears 6.2 are meshed and connected to different first positioning beams 3.1, meaning the two first transmission gears 6.2 are located in different first transmission gear sets 6, and at least one second transmission gear 7.2 is coaxially fixed to the first transmission gear 6. (See attached diagram.) Figure 4-5 To ensure transmission efficiency, save force, and guarantee the smoothness and synchronization of transmission, in this embodiment, the two meshing first transmission gears 6.2 are symmetrically arranged in the middle of the bottom surface of the construction platform 1. The second transmission gear 7.2 in the second transmission gear set 7, which is closer to the middle of the construction platform 1, is coaxially fixed to one of the first transmission gears 6.2. The second transmission gear 7.2 in the second transmission gear set 7, which is closer to the edge of the construction platform 1, is connected to the drive handle 8. By rotating the drive handle 8, the second transmission gear 7.2 closer to the edge of the construction platform 1 rotates, and the second synchronous belt 7.1 drives the second transmission gear 7.2 closer to the middle of the construction platform 1 to rotate, which in turn drives the first transmission gear 6.2 coaxially fixed to it to rotate. The first transmission gear 6.2 drives the first transmission gear set 6 to operate on one hand, and drives another set of first transmission gear sets 6 to operate on the other hand through the first transmission gear 6.2 meshing with it.

[0050] By using two symmetrically arranged sets of first transmission gears 6, the two sets of positioning frames 3 can move synchronously towards each other. By using the slide block 9, the two sets of positioning frames 3 can move synchronously along the horizontal guide rail 2. Through their coordination, the collinearity of the centers of multiple pre-embedded sleeves 12.3 and the precise control of the spacing between each pre-embedded sleeve 12.3 can be achieved, thereby improving the construction quality.

[0051] In this embodiment, the friction coefficient or interaction force between the horizontal guide rail 2 (or construction platform 1) and the slide 9 can be pre-controlled, thereby pre-controlling the friction between the horizontal guide rail 2 (or construction platform 1) and the slide 9. This prevents relative sliding between the two when no large external force is applied by the worker, improving the stability of the slide 9 and thus improving construction accuracy. A scale line can be set on the side wall of the horizontal guide rail 2 to indicate the distance the positioning frame 3 slides along the horizontal guide rail 2. During construction, the distance the positioning frame 3 should move on the horizontal guide rail 2 is calculated based on the distance between the walls of adjacent embedded sleeves 12.3 and the radii of the two embedded sleeves 12.3. The positioning frame 3 is then moved precisely according to the scale line. Alternatively, a cylinder (not shown in the attached diagram) can be used to drive the slide 9 and ensure its stability. Specific implementation methods can be selected by those skilled in the art, and no further specific limitations are made here.

[0052] In this embodiment, the first C-shaped portion 9.1 and the second C-shaped portion 9.2 have the same configuration. To ensure the stability of the two sets of positioning frames 3 moving towards or away from each other, a limiting block 9.4 is provided on the first C-shaped portion 9.1 (or the second C-shaped portion 9.2) to slide against the side of the first positioning beam 3.1. The limiting block 9.4 limits the width of the first positioning beam 3.1 so that it can move smoothly on the first C-shaped portion 9.1 (or the second C-shaped portion 9.2) in a direction perpendicular to the horizontal guide rail 2.

[0053] Material rack 4 can be symmetrically arranged in two sets (as shown in the attached diagram). Figure 3 As shown, each set of material placement racks 4 includes two sets of second positioning beams 4.1, located on opposite sides of the horizontal guide rail 2. Material placement plates 4.2 and adjusting push rods 4.3 are respectively mounted on the longitudinal ends of the second positioning beams 4.1. The two material placement plates 4.2 on the two sets of positioning beams are used to support the two ends of the long angle steel 12.1. The adjusting push rods 4.3 connect the two sets of second positioning beams 4.1 and provide a gripping part for workers to move the second positioning beams 4.1. An installation block 10 is mounted on the construction platform 1, and a sliding groove 10.1 is mounted on the installation block 10. The extension direction of the sliding groove 10.1 is perpendicular to the horizontal guide rail 2, and the second positioning beams 4.1 are slidably positioned in the sliding groove 10.1. To avoid mutual obstruction between the long angle steel 12.1 and the positioning rack 3, the material placement rack 4 and the positioning rack 3 can be positioned with a certain height difference. For ease of welding operations, it is preferable that the material placement rack 4 is higher than the positioning rack 3 (this can be adjusted by the height of the installation block 10).

[0054] During construction, the distance adjustment rod 4.3 can be moved along the extension direction of the slide 10.1 to adjust the distance between the second positioning beam 4.1 and the pre-embedded sleeve 12.3. The sidewall of the slide 10.1 limits the lateral movement of the second positioning beam 4.1, improving its sliding stability. Similarly, the friction coefficient or interaction force between the second positioning beam 4.1 and the slide 10.1 can be pre-controlled, thereby pre-controlling the friction between them. This prevents relative sliding when no large external force is applied, improving the stability of the second positioning beam 4.1 and thus enhancing construction accuracy.

[0055] To adapt to ergonomics and avoid prolonged bending work for construction workers, while also considering the convenience of storing and moving this construction device, this embodiment includes foldable support legs 11 at the bottom of the construction platform 1. The foldable support legs 11 include four sets of uprights 11.1 rotatably connected to the construction platform 1, and X-shaped struts 11.2 for connecting adjacent uprights 11.1. Typically, when every pair of the four sets of uprights 11.1 is connected by X-shaped struts 11.2, the X-shaped struts 11.2 and the uprights 11.1 can be detachably connected to facilitate the folding of the uprights 11.1. If only two sets of X-shaped struts 11.2 are arranged opposite each other, and each set of X-shaped struts 11.2 is only connected to two sets of uprights 11.1 (as shown in the attached diagram). Figure 1 As shown in the figure, a limiting structure (such as a spring limiting component, a detachable positioning pin, etc., which are existing technologies and will not be described in detail here) can be set at the part where the top of the column 11.1 connects to the construction platform 1 to prevent the column 11.1 from shaking after it is unfolded and improve stability.

[0056] Compared with the prior art, the beneficial effects of this utility model include: by using two sets of first transmission gear sets 6 symmetrically arranged, the two sets of positioning frames 3 can move synchronously towards each other; by using the slide block 9, the two sets of positioning frames 3 can move synchronously along the horizontal guide rail 2; through their coordination, the collinearity of the centers of multiple pre-embedded sleeves 12.3 and the precise and rapid adjustment of the spacing between each pre-embedded sleeve 12.3 can be achieved, thereby improving construction quality and efficiency.

[0057] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0058] The above are preferred embodiments of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A welding construction device for pre-embedded sleeve assemblies, characterized in that, include: Construction platform, wherein the construction platform is equipped with horizontal guide rails; Two sets of positioning frames are arranged opposite each other, and they can move synchronously in opposite directions to move closer to or further away from each other; The material placement rack is located on the construction platform and can move along a direction perpendicular to the horizontal guide rail; The horizontal guide rail extends in a direction perpendicular to the direction of relative movement of the two sets of positioning frames. The positioning frame is slidably connected to the horizontal guide rail and can slide along the extension direction of the horizontal guide rail.

2. The welding construction device for the pre-embedded sleeve assembly according to claim 1, characterized in that, The positioning frame includes a first positioning beam, and the opposite ends of the two sets of first positioning beams in the two sets of positioning frames are respectively provided with arc-shaped positioning grooves; the bottom surfaces of the two sets of first positioning beams are respectively provided with transmission racks, and the two sets of transmission racks are respectively meshed with and connected to a first transmission gear set. The two sets of first transmission gear sets are symmetrically arranged and connected to the drive handle through a second transmission gear set.

3. The welding construction device for the pre-embedded sleeve assembly according to claim 2, characterized in that, The first transmission gear set includes a plurality of first transmission gears connected by a first synchronous belt; In the welding construction device, at least two of the first transmission gears are meshed and connected, and are respectively connected to different first positioning beams; The second transmission gear set includes a plurality of second transmission gears connected by a second synchronous belt, and at least one of the second transmission gears and the first transmission gear are coaxially fixedly connected.

4. The welding construction device for the pre-embedded sleeve assembly according to claim 2 or 3, characterized in that, The welding construction device includes a slide block, which is slidably connected to the horizontal guide rail and / or the construction platform, and the first transmission gear set and the second transmission gear set are mounted on the slide block.

5. The welding construction device for the pre-embedded sleeve assembly according to claim 4, characterized in that, The slide includes a first C-shaped portion and a second C-shaped portion arranged opposite to each other, and a straight portion for connecting the first C-shaped portion and the second C-shaped portion. Two sets of positioning frames are respectively mounted on the first C-shaped portion and the second C-shaped portion. A set of opposite side ends of the construction platform are respectively inserted into the openings of the first C-shaped portion and the second C-shaped portion.

6. The welding construction device for the pre-embedded sleeve assembly according to claim 5, characterized in that, The first C-shaped portion has the same configuration as the second C-shaped portion, and the first C-shaped portion is provided with a side that slides against the first positioning beam.

7. The welding construction device for the pre-embedded sleeve assembly according to any one of claims 1-3 and 5-6, characterized in that, The material placement rack includes two sets of second positioning beams, which are located on both sides of the horizontal guide rail along the longitudinal direction. The two ends of the second positioning beams along the longitudinal direction are respectively provided with a material placement plate and an adjusting push rod. The adjusting push rod is used to connect the two sets of second positioning beams.

8. The welding construction device for the pre-embedded sleeve assembly according to claim 7, characterized in that, The construction platform is provided with an installation block, and the installation block is provided with a sliding groove. The extension direction of the sliding groove is perpendicular to the horizontal guide rail, and the second positioning beam is slidably disposed in the sliding groove.

9. The welding construction device for the pre-embedded sleeve assembly according to any one of claims 1-3, 5-6, and 8, characterized in that, The horizontal guide rail has scale lines on its side wall to indicate the distance the positioning frame slides along the horizontal guide rail.

10. The welding construction device for the pre-embedded sleeve assembly according to claim 9, characterized in that, The bottom of the construction platform is provided with foldable support legs, which include columns rotatably connected to the construction platform and X-shaped struts for connecting adjacent columns.