Switching joint welding tool for tower crane

Abstract

The conversion joint welding tool for the tower crane comprises a base, four cross beams, four bases and four positioning sleeves, the four cross beams are evenly fixed to the base in the circumferential direction, the bases correspond to the cross beams in a one-to-one mode, the cross beams move along the cross beams through sliding assemblies, the positions of the four bases are limited through restoration assemblies, and the positioning sleeves are arranged on the four bases. One end of each positioning sleeve is arranged on the base in a sleeving mode, the other end of each positioning sleeve is arranged at the top end of the mast base in a sleeving mode, and a positioning assembly is arranged between every two adjacent positioning sleeves and used for guaranteeing the perpendicularity of the positioning sleeves; according to the conversion joint welding tool for the tower crane, the restoration assembly and the cross beam are adopted, the distance among the four bases can be limited, then the distance among the four mast bases is adjusted, and therefore conversion joints of different sizes and specifications within a certain range can be rapidly switched, and the positioning sleeve and the positioning assembly are adopted, so that the welding efficiency is greatly improved. The top of the mast base can be effectively limited, perpendicularity of the mast base is guaranteed, and welding precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding technology, concretely is a kind of conversion joint welding tool for tower crane. BACKGROUND

[0002] Tower crane (tower crane) is also called tower crane, and it is a rotating crane with a movable arm on the top of a high tower. It has a large working space and is mainly used for vertical and horizontal transportation of materials and installation of building components in building construction. It consists of three parts: metal structure, working mechanism and electrical system. The metal structure includes tower body, movable arm and base, etc. The tower body is composed of conversion joint and different sizes and types of marker joints.

[0003] The conversion joint generally has four mast seats. The existing welding method of conversion joint is to sequentially hoist the separately processed mast seats on the fixed column, and finally weld the four mast seats together. To produce conversion joints of different specifications, the position of the fixed column needs to be adjusted according to the design requirements, which is complex and tedious, greatly affecting the welding efficiency. Moreover, the top of the mast seat is not limited, which causes the mast seat to tilt slightly during welding, resulting in interference during the assembly of the subsequent two conversion joints and making it impossible to assemble. SUMMARY

[0004] To solve the above-mentioned defects of the prior art, the utility model provides a conversion joint welding tool for tower crane, which can quickly switch between conversion joints of different sizes and specifications within a certain range, and limit the top of the mast seat to improve welding precision.

[0005] To achieve the above technical purpose, the utility model adopts the following technical scheme: a conversion joint welding tool for tower crane, comprising a base, four cross beams, four bases and four positioning sleeves. The four cross beams are evenly fixed circumferentially on the base. The base corresponds to the cross beam one by one. The cross beam moves along the cross beam through a sliding assembly. The four bases are limited in position by a normalizing assembly. The positioning sleeve is sleeved on the base at one end and on the top end of the mast seat at the other end. A positioning assembly is provided between the adjacent two positioning sleeves. The positioning assembly is used to ensure the perpendicularity of the positioning sleeve.

[0006] Preferably, the sliding assembly includes a sliding sleeve and a plurality of fixed bolts arranged on both sides of the sliding sleeve. The sliding sleeve is slidingly fitted on the cross beam. The fixed bolts are used to limit the sliding sleeve on the cross beam.

[0007] Preferably, the four cross beams have the same length and are connected end to end. The normalizing assembly includes a cross joint and four telescopic rods. One end of the telescopic rod is hinged to the base. The other end of the telescopic rod is provided with a connecting plate at the cross joint. Two connecting plates are fixed together by a normalizing bolt.

[0008] Preferably, the positioning assembly comprises two fixing rods and a stud bolt, the two fixing rods are fixed to two adjacent positioning sleeves respectively, and the stud bolt is arranged between the two fixing rods and is threadedly connected to the two fixing rods at two ends.

[0009] Preferably, the base and the positioning sleeve are both square, the positioning sleeve is provided with a first shaft hole and a second shaft hole, the first shaft hole and the second shaft hole are different in height, and a taper pin is matched with the first shaft hole and the second shaft hole, the taper pin locks the positioning sleeve to the base through the first shaft hole, and the taper pin fixes the positioning sleeve to the mast base through the second shaft hole.

[0010] Preferably, the base is provided with a plurality of lifting lugs on one side relative to the cross beam.

[0011] In conclusion, the tower crane conversion joint welding tool has the following technical effects:

[0012] The tower crane conversion joint welding tool adopts the alignment assembly and the cross beam, can limit the distance between the four bases, further adjust the distance between the four mast bases, and thus realize quick switching between conversion joints of different sizes and different specifications within a certain range, and the positioning sleeve and the positioning assembly can effectively limit the top of the mast base, ensure the perpendicularity of the mast base, and improve the welding precision. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the tower crane conversion joint welding tool of the utility model;

[0014] Figure 2 is a side view of the tower crane conversion joint welding tool of the utility model;

[0015] Figure 3 is Figure 2 the AA direction sectional view of the tower crane conversion joint welding tool of the utility model;

[0016] DESCRIPTION OF THE DRAWINGS: 1, base; 2, cross beam; 3, base; 4, telescopic rod; 5, cross joint; 6, connecting plate; 7, sliding sleeve; 8, fixing bolt; 9, lifting lug; 10, positioning sleeve; 11, first shaft hole; 12, second shaft hole; 13, fixing rod; 14, stud bolt. DETAILED DESCRIPTION

[0017] The utility model will be further explained in detail in combination with the drawings.

[0018] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and those skilled in the art can make a modification without creative contribution according to the need after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

[0019] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model indicated or implied by the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0020] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0021] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] In the utility model, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0023] Embodiment one:

[0024] As Figure 1As shown in Figure 2, a welding fixture for a tower crane conversion section includes a base 1, four crossbeams 2, four bases 3, and four positioning sleeves 10. The four crossbeams 2 are circumferentially and evenly fixed to the base 1. The bases 3 correspond one-to-one with the crossbeams 2. The crossbeams 2 can move along the crossbeams 2 via sliding components. The four bases 3 are positioned by alignment components. One end of each positioning sleeve 10 is fitted onto the base 3 and the other end is fitted onto the top of the mast seat. A positioning component is provided between two adjacent positioning sleeves 10 to ensure the verticality of the positioning sleeve 10.

[0025] The tower crane transition section welding fixture of this embodiment uses a straightening component and a crossbeam 2 to limit the distance between the four bases 3, thereby adjusting the distance between the four mast seats. This enables rapid switching between transition sections of different sizes and specifications within a certain range. In addition, the use of a positioning sleeve 10 and a positioning component can effectively limit the top of the mast seat, ensuring the verticality of the mast seat and improving welding accuracy.

[0026] The sliding assembly includes a sliding sleeve 7 and several fixing bolts 8 disposed on both sides of the sliding sleeve 7. The sliding sleeve 7 is slidably fitted onto the crossbeam 2, and the fixing bolts 8 are used to limit the sliding sleeve 7 to the crossbeam 2.

[0027] The four crossbeams 2 are all of the same length and connected end to end. The alignment component includes a cross joint 5 and four telescopic rods 4. One end of the telescopic rod 4 is hinged to the base 3, and the other end of the telescopic rod 4 is provided with a connecting plate 6 at the cross joint 5. The two connecting plates 6 are fixed together by alignment bolts.

[0028] like Figure 3 As shown, the positioning assembly includes two fixing rods 13 and a double-ended bolt 14. The two fixing rods 13 are respectively fixed to two adjacent positioning sleeves 10. The double-ended bolt 14 is disposed between the two fixing rods 13, and the two ends of the double-ended bolt 14 are threaded into the fixing rods 13 respectively.

[0029] Both the base 3 and the positioning sleeve 10 are square. The positioning sleeve 10 is provided with a first shaft hole 11 and a second shaft hole 12. The first shaft hole 11 and the second shaft hole 12 have different heights. Tapered pins are fitted on both the first shaft hole 11 and the second shaft hole 12. The tapered pins lock the positioning sleeve 10 to the base 3 through the first shaft hole 11 and fix the positioning sleeve 10 to the mast seat through the second shaft hole 12.

[0030] The base 1 is provided with several lifting lugs 9 on one side relative to the crossbeam 2.

[0031] Working principle: according to the specification model adjusts the position of four bases 3 on the crossbeam 2, adjusts the distance between two adjacent bases 3 and mast seat, adjusts the length of four telescopic rods 4 consistent, and checks and adjusts the diagonal position of the mast seat through the cross joint 5, so as to ensure the square shape of the conversion joint, so as to quickly adapt to the size and specification of the conversion joint, which can adapt to the square conversion joint, then fix the positioning sleeve 10 on the base 3, adjust the perpendicularity of the positioning sleeve 10 through the stud bolt 14, finally hoist through the lifting lug 9, ensure that the positioning sleeve 10 is fixed with the top of the mast seat, ensure the perpendicularity of the mast seat, and then improve the welding precision.

[0032] The above only describes the preferred embodiments of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments are within the scope of the technical scheme of the present application.

Claims

1. A welding tool for a conversion joint of a tower crane, characterized in that, The utility model provides a kind of mast base, including base, 4 cross beams, 4 pedestals and 4 positioning sleeves, 4 cross beams are evenly fixed in base periphery, the pedestal corresponds to cross beam one by one, the cross beam moves along cross beam by sliding assembly, four pedestals are positioned by normalizing assembly, one end of positioning sleeve is sleeved in pedestal and the other end is sleeved in mast base top, positioning assembly is equipped between adjacent two positioning sleeves, and the positioning assembly is used to ensure the perpendicularity of positioning sleeve.

2. The welding tool for a rotary joint of a tower crane according to claim 1, wherein The sliding assembly includes a sliding sleeve and a plurality of fixing bolts disposed on both sides of the sliding sleeve, the sliding sleeve is slidingly fitted on the cross beam, and the fixing bolts are used to limit the sliding sleeve on the cross beam.

3. The welding tool for a rotary joint of a tower crane according to claim 1, wherein The four cross beams have the same length and are connected end to end, the normalizing assembly includes a cross joint and four telescopic rods, one end of the telescopic rod is hingedly connected to the pedestal, and the other end of the telescopic rod is provided with a connecting plate at the cross joint, and the two connecting plates are fixed together by a normalizing bolt.

4. The welding tool for a rotary joint of a tower crane according to claim 1, wherein The positioning assembly includes two fixed rods and a stud bolt, the two fixed rods are respectively fixed to the adjacent two positioning sleeves, the stud bolt is disposed between the two fixed rods, and the two ends of the stud bolt are respectively threadedly connected to the fixed rods.

5. The welding tool for a rotary joint of a tower crane according to claim 1, wherein The base and the positioning sleeve are both square, the positioning sleeve is provided with a first shaft hole and a second shaft hole, the first shaft hole and the second shaft hole have different heights, a taper pin is fitted on the first shaft hole and the second shaft hole, the taper pin locks the positioning sleeve on the base through the first shaft hole, and the taper pin fixes the positioning sleeve and the mast base through the second shaft hole.

6. The welding tool for a rotary joint of a tower crane according to claim 1, wherein The base is provided with a plurality of lifting lugs on one side relative to the cross beam.

Images