CN214602762U - Tower crane jib assembly welding device - Google Patents

Abstract

The utility model discloses a tower crane jib loading boom assembly welding device, it is left, right stand is adjusted well respectively and is fixed on subaerial base both ends plane, a left side, the lower part of right stand is fixed with a connecting plate respectively, there is left otic placode seat top of left stand through the bolt fastening, the top of right stand is fixed with two big or small difference's that set up from top to bottom right otic placode seats, a positioning seat for fixing the lower chord is fixed on the processing plane on the base, jib loading boom upper chord adopts the round pin axle to fix respectively on left, right otic placode seat, other upper chords connect gradually through the round pin axle of different diameter specifications, the round pin axle is the stepped pin axle of 2-3 ladders, lower chord both ends positioning pin axle passes through the connecting plate to be fixed, one side of connecting plate is equipped with the U-shaped groove, the positioning axle of jib loading boom lower chord is put in the U type groove of connecting plate and is fixed, the utility model discloses the assembly welding who realizes multiple jib loading boom is welded, High working efficiency and good interchangeability.

Description

Tower crane jib assembly welding device

Technical Field

The utility model belongs to the technical field of tower crane equipment, especially, relate to a tower crane jib loading boom assembly welding device.

Background

At present, the domestic construction industry is developed quickly, and the tower crane is widely applied to various building constructions such as medium and high-rise buildings, industrial plants, bridges and the like. The crane boom is used as a main stressed component of the tower crane, and the product quality of the crane boom, the connectivity of the crane booms with different sections and the interchangeability of the crane booms with the same specification need to be ensured in the manufacturing process; the existing crane boom process equipment is large in variety and large in quantity, and is assembled and checked again after welding, so that labor and time are wasted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to improve the not enough of prior art and provide one kind through transform connecting pin axle or connecting block can realize the assembly welding of multiple jib loading boom, work efficiency is high, guarantee with the connectivity between the model jib loading boom and with the tower crane jib assembly welding device of interchangeability between the specification jib loading boom.

The utility model aims at realizing the purpose, the welding device of the crane jib of the tower crane comprises a base, and is characterized in that the base is fixed on the ground, a left upright post and a right upright post are respectively fixed on the two end planes of the base in an aligned way, the lower parts of the left upright post and the right upright post are respectively fixed with a connecting plate, a left ear plate seat is fixed above the left upright post through a bolt, two right ear plate seats with different sizes are fixed above the right upright post through a bolt, a positioning seat for fixing a lower chord is fixed on a processing plane above the base, the two ends of the upper chord of the crane jib are respectively fixed on the left ear plate seat and the right ear plate seat on the left upright post and the right upright post through pin shafts with different diameter specifications which are connected in sequence, the pin shafts are stepped pin shafts with 2-3 steps, and the positioning pin shafts at the two ends of the lower chord of the crane jib are fixed through the connecting plates, one side of the connecting plate is provided with a U-shaped groove, and the positioning shaft of the boom lower chord is positioned in the U-shaped groove of the connecting plate.

Compared with the prior art, the utility model has the following characteristics of showing and positive effect: the utility model adopts the pin shafts with different specifications to connect the left and right upright posts and the upper chord in sequence, can assemble the crane boom with a plurality of identical cross sections but different connecting pin shafts by changing the pin shafts, adopts the pin shafts with 2-3 steps, can reduce the number of tools, reduce the production cost and ensure the precision of the manufacturing quality of products; the connecting plate is fixed below the left and right upright posts by bolts, and the positioning shaft of the lower chord of the crane boom is arranged in a U-shaped groove of the connecting plate, so that the upper planes of the lower chord are kept consistent and the crane boom is fixedly connected; the right ear plate seat has 2 pieces and 2 mounting positions so as to obtain the crane boom with different sections; the positioning seat is welded and fixed on the processing plane on the base, and the upper plane of the lower chord of the crane boom is parallel and level.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a schematic structural diagram of the pin shaft of the present invention.

Fig. 4 is a schematic structural diagram of the connection plate of the present invention.

Fig. 5 is a schematic structural diagram of the upper portion of the right pillar of the present invention.

In the figure: 1. the left upright post, 2, the pin shaft, 3, the base, 4, the right upright post, 5, the connecting plate, 6, the left ear plate seat, 7, the right ear plate seat, 8, the positioning seat, 9, the U-shaped groove, 10, the upper chord, 11 and the lower chord.

Detailed Description

A tower crane jib assembly welding device, refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, a base 3 is fixed on the ground, the theodolite is used to level the upper processing surface of the base 3, the theodolite and a steel tape are used to align and weld and fix the left, the upright 1 and the right upright 4 on the two end processing planes of the base 3 according to requirements, the lower parts of the left upright 1 and the right upright 4 are respectively fixed with a connecting plate 5, the upper part of the left upright 1 is fixed with a left ear plate seat 6 through bolts, the upper part of the right upright 4 is fixed with two right ear plate seats 7 which are arranged up and down through bolts, the different right ear plate seats 7 are connected to obtain a positioning seat with variable cross section, positioning seats 8 for fixing a lower chord 11 are arranged and fixed on the processing plane on the base 3 at intervals to ensure the upper plane of the jib crane jib 11 to be parallel and level, the two ends of an upper chord 10 are respectively fixed on the left ear plate seat 6, a left upright 1, a right ear plate seat 6, a right ear plate seat and a right ear plate seat 7 of the left upright 1 through a pin shaft 2, The right ear plate seat 7 of the right upright post 4 is provided with the right ear plate seat 7 as required, other upper chords 10 are sequentially connected through pin shafts 2 with different diameters, the pin shaft 2 is a step pin shaft with 2-3 steps, two end positioning pin shafts of a lower chord 11 of the crane boom are fixed through a connecting plate 5, one side of the connecting plate 5 is provided with a U-shaped groove 9, a positioning shaft of the lower chord 11 of the crane boom is placed in the U-shaped groove 9 of the connecting plate 5 for positioning, after the upper chord 10 of the crane boom is fixed through the pin shaft 2, the two end positioning pin shafts of the lower chord 11 of the crane boom are fixed through the connecting plate 5, the lower chord 11 is fixed through a positioning seat 8 to ensure that the upper planes of the lower chord 11 are kept consistent, then various straight and inclined web members of the crane boom are scribed and assembled, a plurality of crane boom straight and inclined web members with the same cross section but different connecting pin shafts can be assembled through the pin shafts 2 with different diameters, thereby ensuring the connectivity between the crane boom with the same model and different cross sections, and the interchangeability between the crane booms with the same specification can be ensured. The aim of standardized batch production of the crane boom is achieved, the product quality is guaranteed, the working efficiency is improved, and the process tool cost is saved.

Claims (1)

1. A tower crane jib assembly welding device comprises a base, and is characterized in that the base is fixed on the ground, a left upright post and a right upright post are respectively fixed on two end planes of the base in an aligned manner, a connecting plate is respectively fixed on the lower parts of the left upright post and the right upright post, a left ear plate seat is fixed on the upper part of the left upright post through a bolt, two right ear plate seats with different sizes are fixed on the upper part of the right upright post through a bolt, a positioning seat for fixing a lower chord is fixed on a processing plane on the base, two ends of an upper chord of a jib are respectively fixed on the left ear plate seat and the right ear plate seat on the left upright post and the right upright post through pin shafts, other upper chords are sequentially connected through pin shafts with different diameters, the pin shafts are stepped pin shafts with 2-3 steps, two ends of the lower chord of the jib are fixed through the connecting plate, one side of the connecting plate is provided with a U-shaped groove, and a positioning shaft of the lower chord of the crane boom is placed in the U-shaped groove of the connecting plate for positioning.

Images