An adjustable swivel joint

Abstract

The utility model relates to an adjustable conversion joint, including fixed support leg connecting seat, angle adjusting beam, base joint connecting seat and ladder stand, angle adjusting beam includes upper beam ring plate and lower beam ring plate, and upper beam ring plate and lower beam ring plate are connected as an organic whole through web and muscle board, and base joint connecting seat is welded on the top surface of upper beam ring plate, the lower beam ring plate panel face is opened and has a plurality of through -holes along the circumference arrangement of lower beam ring plate panel face, and fixed support leg connecting seat is located below lower beam ring plate and is connected with lower beam ring plate through the corresponding through -hole of bolt, and ladder stand is connected on angle adjusting beam, the utility model can realize the two -way adjustment of height and angle, thereby realize tower crane flexibility and fixed support leg pre -buried when appearing settlement can adjustability. Greatly improved tower crane installation convenient, safe, reliable, save installation cost, increased the fault tolerance of installation and disassembly, improved the flexibility of tower crane orientation, increased the adaptability of tower crane.

Description

Technical Field

[0001] This utility model relates to an adjustable conversion joint, belonging to the technical field of tower cranes. Background Technology

[0002] With the development of the construction industry and the needs of construction, tower cranes are trending towards larger sizes. Consequently, the installation and dismantling of large tower cranes takes longer and is less efficient and economical. Currently, during foundation pouring, pre-embedded fixed outriggers often exhibit horizontal height deviations and misalignment with the building structure. Existing transition sections are custom-made, connecting the outriggers and foundation sections, and are only suitable for installation in 0° and 180° directions, unable to adjust to other orientations, making normal installation and dismantling impossible. Therefore, designing an adjustable angle and height transition section structure is crucial to address these issues. Utility Model Content

[0003] This utility model aims to address the above-mentioned problems by providing an adjustable conversion section. By installing the conversion section, the orientation of the tower body can be adjusted, thereby achieving convenient, safe, reliable, and cost-effective tower crane installation.

[0004] The technical solution provided by this utility model is: an adjustable conversion section, including a fixed leg connecting seat, an angle adjusting beam, a base section connecting seat, and a ladder; the angle adjusting beam includes an upper beam ring plate and a lower beam ring plate, which are connected as one piece by a web plate and stiffening plates, and the base section connecting seat is welded to the top surface of the upper beam ring plate; the lower beam ring plate has several through holes arranged around its circumference, and the fixed leg connecting seat is located below the lower beam ring plate and is connected to the lower beam ring plate by bolts passing through the corresponding through holes; the ladder is connected to the angle adjusting beam.

[0005] A pad is provided between the lower beam ring plate and the fixed support leg connecting seat, and the pad has through holes for bolts to pass through. The pads can be selected in different thicknesses and quantities according to actual needs to adjust the flatness of the transition section.

[0006] The fixed leg connecting seats are in four sets, and the four sets of fixed leg connecting seats are evenly distributed below the angle adjustment beam.

[0007] The stiffening plates consist of several pieces, which are evenly distributed around the axis of the angle adjustment beam (the center line of the tower body). Each stiffening plate has a mounting hole, and the ladder is fixed to the beam by bolts passing through the mounting holes. The installation position of the ladder can be moved according to actual needs.

[0008] The ladder includes an inner ladder and an outer ladder, which are respectively set on the inner and outer sides of the beam; the ladder is fixed to the angle adjustment beam by bolts passing through the mounting holes; the mounting holes are located on the circumferentially arranged stiffening plates so that the ladder can be installed in a convenient climbing position when the tower body is facing different directions.

[0009] This invention allows for adjustment of the tower's orientation by installing a conversion joint, thereby enabling convenient, safe, reliable, and cost-effective tower crane installation. It also significantly increases the tolerance for installation and dismantling errors, enhances the flexibility of the tower crane's orientation, and increases the tower crane's adaptability. Attached Figure Description

[0010] Figure 1 This is a schematic diagram showing the installation of the converter section without using this utility model.

[0011] Figure 2 This is a schematic diagram of the installation of the converter section using this utility model.

[0012] Figure 3 This is a schematic diagram of the conversion section structure of this utility model.

[0013] Figure 4 This is a schematic diagram of the angle adjustment beam structure of this utility model. Detailed Implementation

[0014] This utility model includes a fixed support leg connecting seat, an angle adjusting beam, a foundation section connecting seat, an inner ladder, and an outer ladder. The angle adjusting beam includes an upper beam ring plate and a lower beam ring plate, with a web plate and multiple stiffening plates welded between them. The ring holes of the upper and lower beam ring plates are coaxially aligned. The multiple stiffening plates are evenly distributed around the axis of the angle adjusting beam (the center line of the tower body), and each stiffening plate has an installation hole. The outer ladder is located on the outside of the beam, and the inner ladder is located in the ring holes of the upper and lower beam ring plates. The ladder is fixed to the beam by bolts passing through the installation holes. The foundation section connecting seat is welded to the top surface of the upper beam ring plate. A mounting plate is welded to the foundation section connecting seat, and the mounting plate has pin holes corresponding to the installation holes on the foundation section (or standard section). The connection is fixed by pins passing through the pin holes and the installation holes on the foundation section (or standard section). The lower beam ring plate has several through holes arranged around its circumference. The fixed support leg connecting seat is located below the lower beam ring plate and is connected to the lower beam ring plate by bolts passing through the corresponding through holes. The circumferentially arranged through holes allow the fixed support leg connecting seat to be installed by rotating around the central axis, thereby adjusting the orientation of the tower. The ladder is connected to the angle adjustment beam.

[0015] A pad is provided between the lower beam ring plate and the fixed support leg connecting seat, and the pad has through holes for bolts to pass through. The pads can be selected in different thicknesses and quantities according to actual needs to adjust the flatness of the mounting surface on the foundation section.

[0016] The fixed leg connecting seats are in four sets, and the four sets of fixed leg connecting seats are evenly distributed below the angle adjustment beam.

[0017] like Figure 1As shown, when the adjustable conversion section is not used, the base section 16 (standard section) is connected to the fixed leg 13 by a pin. The fixed leg 13 is embedded in the foundation 15. The tower crane can only be installed in two directions: 0° and 180°.

[0018] like Figure 2 As shown, after using the adjustable conversion section, its rotation angle along the center line of the tower can be adjusted arbitrarily; the adjustment steps are as follows: remove 4 sets of bolts 2, lift the foundation section 16 and the angle adjustment beam 14 as a whole, select a suitable angle, and retighten the bolts 2.

[0019] like Figure 3 As shown, the adjustable transition section is assembled from fixed leg connecting seats 1, pads 3, angle adjusting beams 4, outer ladders 5, and inner ladders 6. Four sets of fixed leg connecting seats 1 are installed at the bottom, allowing for installation at appropriate angles according to the tower crane's orientation requirements. Height adjusting pads 3 are installed above the fixed leg connecting seats 1, allowing for adjustment of the transition section's horizontal flatness by selecting the appropriate thickness and quantity based on the horizontal height of the pre-embedded legs in the foundation. The fixed leg connecting seats connect to the fixed legs pre-embedded in the foundation. The fixed leg connecting seats are secured by six sets of bolts 2 evenly distributed along the center. An outer ladder 5 is provided on the outside of the transition section, fixed at the stiffening plate by four sets of bolts passing through mounting holes on the support plate; its installation position can be adjusted as needed. An inner ladder 6 is also provided on the inside, fixed at the stiffening plate by four sets of bolts passing through mounting holes on the stiffening plate; its installation position can also be adjusted as needed.

[0020] like Figure 4 As shown, the angle adjustment beam 4 is welded together from the lower beam plate 7, web plate 8, outer stiffening plate 9, upper beam plate 10, foundation section connecting seat 11, and inner stiffening plate 12. The upper four sets of foundation section connecting seats can be connected to the tower body; holes are opened on the inner and outer stiffening plates to connect the ladder.

[0021] When using this utility model, select a suitable angle according to the tower crane's orientation requirements, and select the appropriate thickness and number of pads 4 according to the horizontal height of the foundation's embedded legs to adjust the horizontal flatness of the transition section. Connect and fix the fixed leg connecting seat 1 to the fixed leg embedded in the foundation using a pin; connect and fix the foundation section connecting seat 11 to the tower crane's foundation section (or standard section) using a pin.

[0022] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical principles of the present invention, and these modifications and improvements should also be considered within the scope of protection of the present invention.

Claims

1. An adjustable transition section, characterized in that: It includes a fixed leg connecting seat, an angle adjusting beam, a base section connecting seat, and a ladder; the angle adjusting beam includes an upper beam ring plate and a lower beam ring plate, which are connected as one piece by a web plate and stiffening plates, and the base section connecting seat is welded to the top surface of the upper beam ring plate; the lower beam ring plate has several through holes arranged around its circumference, and the fixed leg connecting seat is located below the lower beam ring plate and is connected to the lower beam ring plate by bolts passing through the corresponding through holes; the ladder is bolted to the angle adjusting beam.

2. The adjustable transition section according to claim 1, characterized in that: A pad is provided between the lower beam ring plate and the fixed support leg connecting seat, and the pad has through holes for bolts to pass through.

3. The adjustable transition section according to claim 1 or 2, characterized in that: The fixed leg connecting seats are in four sets, and the four sets of fixed leg connecting seats are evenly distributed below the angle adjustment beam.

4. The adjustable transition section according to claim 1 or 2, characterized in that: The stiffening plates consist of several pieces, which are evenly distributed around the axis of the angle adjustment beam. Each stiffening plate has a mounting hole, and the ladder is fixed to the angle adjustment beam by bolts passing through the mounting holes.

5. The adjustable transition section according to claim 4, characterized in that: The ladder includes an inner ladder and an outer ladder, which are respectively located on the inner and outer sides of the angle adjustment beam.

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