Tower crane standard knot single step tailor-welding tool

Abstract

The utility model relates to the technical field of standard knot machining equipment, in particular to a tower crane standard knot single-piece step tailor-welding tool which comprises a base, a pressing assembly and a step positioning assembly, the pressing assembly is arranged on the base and used for pressing a standard knot single piece, and during welding, the step positioning assembly is arranged on the standard knot single piece and used for positioning the step positioning assembly. By means of the standard knot single-piece step welding positioning device, the standard knot single-piece step welding efficiency can be improved, and meanwhile welding operation safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of standard section processing equipment, and specifically relates to a single-step welding tooling for tower crane standard sections. Background Art

[0002] Tower cranes (hereinafter referred to as tower cranes) are one of the indispensable lifting equipment in the modern construction process. They can lift a large amount of building materials, base materials, etc. to a height of dozens of meters and play an important role in large-scale construction projects. The bottom support frame of the crane is composed of multiple groups of standard sections, and these standard sections are spliced and installed to form a crane support frame dozens of meters high.

[0003] The tower crane standard section is composed of two single pieces and several connecting rods. The single piece is welded by two main chord rods and several connecting pipes. After the single piece of the standard section is manufactured, it is also necessary to continue to install parts such as connecting pieces and steps on the single piece of the standard section by welding. The step is an important component for the tower crane to achieve self-lifting and tolerates no error. In order to ensure accuracy, the existing method is to first draw lines on the standard section and then weld. The welding preparation work is complex, time-consuming and laborious. In addition, for standard sections with a relatively large height, workers also need to climb to a height to draw lines and then weld, and climbing operations have certain risks. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a single-step welding tooling for tower crane standard sections, which can improve the welding efficiency of the single-step of the standard section and ensure the safety of welding operations at the same time.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a single-step welding tooling for tower crane standard sections, including a base, a pressing component and a step positioning component. The pressing component is arranged on the base and is used to press the single piece of the standard section. During welding, the step positioning component is arranged on the single piece of the standard section to provide accurate positioning for step welding.

[0006] Preferably, the step positioning component includes a positioning frame, a pin shaft and a plurality of positioning pins. The plurality of positioning pins are distributed at the left end and the right end of the positioning frame. During welding, the positioning frame is fixedly connected to the single piece of the standard section through the pin shaft.

[0007] Preferably, the base further includes a plurality of cushion blocks and a plurality of positioning blocks. The plurality of cushion blocks are distributed along the length direction of the base body. The plurality of positioning blocks are distributed at the four corners of the base body.

[0008] Preferably, a plurality of pressing components are provided, and the plurality of pressing components are distributed on the cushion blocks and the positioning blocks.

[0009] Preferably, the positioning block is provided with an L-shaped notch for positioning.

[0010] Preferably, the notch faces the outside of the base body.

[0011] Preferably, the pressing assembly includes a pressing plate, a screw rod, and a nut. The screw rod is fixedly connected to the base. The pressing plate and the nut are both arranged on the screw rod, and the nut is located above the pressing plate.

[0012] Preferably, the pressing assembly includes a pressing plate and a pressing cylinder; the pressing cylinder is arranged on the base, and the pressing plate is fixedly connected to the output end of the pressing cylinder and is located above the base.

[0013] Preferably, the pressing plate has a C-shaped structure.

[0014] Preferably, the spacer block is at the same height as the positioning block.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: By arranging a pressing assembly, a positioning frame, and a positioning pin on the base, during welding, the pressing assembly can reduce the occurrence of deformation of the single standard section after welding, ensuring the quality of the single standard section. The positioning frame and the positioning pin can provide accurate positioning for the step welding, improving the welding accuracy of the step while also improving the welding efficiency. At the same time, during welding, workers do not need to work at heights, eliminating potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the welding and assembling tooling of the present utility model;

[0017] Figure 2 is a schematic diagram of the structure of the positioning block of the present utility model.

[0018] In the figure: 1 base, 11 left beam, 12 right beam, 13 connecting rod, 14 spacer block, 15 positioning block, 2 pressing assembly, 3 positioning frame, 4 positioning pin, 5 pin shaft, 6 single standard section, 61 main chord, 62 step, 151 notch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following details the specific embodiments of the present utility model with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice the present utility model. Although the present utility model is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative and do not limit the scope of the present utility model.

[0020] Specific Embodiment 1: Please refer to Figure 1-2A single-step welding fixture for a tower crane standard section, comprising: a base 1, a pressing assembly 2 and a step positioning assembly; the pressing assembly 2 is arranged on the upper side of the base 1 and is used to press the standard section single piece placed on the base 1, reduce the occurrence of deformation of the standard section single piece after welding, and ensure the quality of the standard section single piece; the step positioning assembly is arranged on the upper side of the base 1. When welding the step, the standard section single piece is located between the base 1 and the step positioning assembly. The step positioning assembly can provide accurate positioning for step welding, ensure the welding accuracy of the step and improve the welding efficiency at the same time.

[0021] Specifically, the base 1 is a frame structure formed by connecting a left beam 11, a right beam 12 and a number of connecting rods 13; in order to cooperate with the protruding connecting pieces of the standard section single piece, the standard section single piece needs to be raised, so a number of cushion blocks 14 are arranged on the base 1, and the number of cushion blocks 14 are distributed on the left beam 11 and the right beam 12 respectively; further, both the left beam 11 and the right beam 12 are square hollow structures;

[0022] After the standard section single piece is hoisted onto the base 1, in order to quickly position the standard section single piece, a positioning block 15 is provided at each of the four corners of the base 1. A notch 151 is formed on the positioning block 15 to make the positioning block 15 in an L-shaped structure. The notch 151 of each positioning block 15 faces outward. After the standard section single piece is hoisted onto the base 1, the connecting piece on the standard section single piece abuts against the side wall of the notch 151, and the standard section single piece is clamped on the base 1 through the limitation of four points to achieve positioning; further, the positioning block 15 is at the same height as the cushion block 14, which can improve the bearing capacity of the base 1.

[0023] A number of pressing assemblies 2 are provided, and the number of pressing assemblies 2 are arranged on the cushion blocks 14 and the positioning blocks 15 in a one-to-two manner. It can be understood that two pressing assemblies 2 are arranged on each cushion block 14 and positioning block 15. During processing, the main chord of the standard section single piece is arranged on the cushion block 14, and the pressing assemblies 2 are distributed on both sides of the main chord and press the main chord. The pressing assemblies 2 on the positioning block 15 can press both ends of the main chord. Such a setting can maximally avoid the deformation of the main chord due to welding. In this embodiment, the pressing assembly 2 includes a pressing plate, a screw rod and a nut. The screw rod is fixedly connected to the cushion block 14, and both the pressing plate and the nut are arranged on the screw rod and the nut is located above the pressing plate. By rotating the nut, the nut can press down the pressing plate to press the main chord.

[0024] In one embodiment, the pressing plate is in a C-shaped structure.

[0025] In one embodiment, the pressing assembly 2 can also be composed of a power-driven pressing cylinder and a pressing plate arranged at the output end of the pressing cylinder. The pressing cylinder is arranged on the base 1, and the pressing plate is fixedly connected to the output end of the pressing cylinder and is located above the base 1. Under the power drive, the pressing plate can move up and down relative to the base 1 to realize the functions of pressing or releasing. Power-driven pressing can save manpower and further improve the welding efficiency.

[0026] The step positioning assembly includes a positioning frame 3, eight positioning pins 4 and two pin shafts 5. During use, the two pin shafts 5 are respectively arranged at the front end and the rear end of the positioning frame 3 to fix the position of the positioning frame 3 with the single piece of the standard section; the eight positioning pins 4 are fixedly arranged at the left end and the right end of the positioning frame 3 according to the step installation requirements, and each positioning pin 4 can limit one step.

[0027] The using method of this welding and assembling tooling: First, hoist the single piece of the standard section onto the base and press it tightly with the pressing plate; then hoist the positioning frame and fix the positioning frame on the single piece of the standard section through the pin shafts; then lean the eight steps against the corresponding positioning pins in sequence and carry out welding; finally, after the welding is completed, pull out the pin shafts and loosen the pressing plate to hoist the positioning frame and the single piece of the standard section away from this welding and assembling tooling.

[0028] Through this technical solution, by arranging a pressing assembly, a positioning frame and positioning pins on the base, during welding, the pressing assembly can reduce the occurrence of deformation of the single piece of the standard section after welding, ensure the quality of the single piece of the standard section, and the positioning frame and positioning pins can provide accurate positioning for step welding, improve the welding efficiency while ensuring the step welding precision. At the same time, workers do not need to work at heights during welding, eliminating potential safety hazards.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A single-step welding tooling for the standard section of a tower crane, characterized in that: It includes a base (1), a pressing component (2) and a step positioning component. The pressing component (2) is arranged on the base (1) for pressing a single standard section. The step positioning component is arranged on the single standard section to provide accurate positioning for step welding. The step positioning component includes a positioning frame (3), a pin shaft and a number of positioning pins. The number of positioning pins are distributed at the left end and the right end of the positioning frame (3). The positioning frame (3) is fixedly connected to the single standard section through the pin shaft.

2. The single-step welding tooling for the tower crane standard section according to claim 1, wherein: The base (1) further includes a number of cushion blocks (14) and a number of positioning blocks (15). The number of cushion blocks (14) are distributed along the length direction of the base (1) body. The number of positioning blocks (15) are distributed at the four corners of the base (1) body.

3. The single-step welding fixture for the standard section of a tower crane according to claim 2, characterized in that: A number of the pressing components (2) are provided. The number of pressing components (2) are distributed on the cushion blocks (14) and the positioning blocks (15).

4. The single-step welding fixture for the standard section of a tower crane according to claim 2, characterized in that: An L-shaped notch for positioning is formed on the positioning block (15).

5. The single-step welding tooling for the standard section of tower crane according to claim 4, characterized in that: The notch faces the outside of the base (1) body.

6. The single-step welding fixture for the standard section of tower crane according to claim 1, characterized in that: The pressing component (2) includes a pressing plate, a screw rod and a nut. The screw rod is fixedly connected to the base (1). The pressing plate and the nut are both arranged on the screw rod and the nut is located above the pressing plate.

7. The single-step welding tooling for the standard section of tower crane according to claim 1, characterized in that: The pressing component (2) includes a pressing plate and a pressing cylinder. The pressing cylinder is arranged on the base (1). The pressing plate is fixedly connected to the output end of the pressing cylinder and is located above the base (1).

8. The single-step welding tooling for the standard section of tower crane according to claim 6 or 7, characterized in that: The pressing plate has a C-shaped structure.

9. The single-step welding fixture for the standard section of tower crane according to claim 3, characterized in that: The cushion blocks (14) and the positioning blocks (15) are of the same height.

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