CN203112378U - Introduction device of tower crane standard knot - Google Patents

Abstract

The utility model discloses an introduction device of a tower crane standard knot, belonging to the technical field of engineering machinery. The introduction device comprises an introduction trolley and four single-leg chain hooks, wherein the single-leg chain hooks are fixed on the introduction trolley through pin shafts and split pins. The introduction device has the beneficial effects that the standard knot can be quickly introduced by using the structure of the single-leg chain hooks, the actual operation is simple and practical; and as the form of four single-leg chain hooks is used, the structure is symmetrical, high stability and high reliability are provided, and unsafe factors are eliminated.

Description

Introduction device of standard section of tower crane

technical field

The utility model relates to an introduction device, in particular to an introduction device for a standard section of a tower crane, and belongs to the technical field of engineering machinery.

Background technique

Tower cranes are commonly used lifting equipment for construction engineering operations. With the increasing technical level, tower cranes have become indispensable heavy machinery in fields such as construction, transportation, logistics, and energy. Among the crane accessories, the standard joint is the main force-bearing member and a crucial part of the lifting tower crane.

At present, the standard section is introduced between the lower support and the tower body through the introduction of trolleys, so as to realize the addition of sections to the tower crane. There are many ways to connect the connecting rod and the standard section of the imported trolley. The traditional method is to use the pin shaft at one end of the connecting rod to connect with the trolley, and the other end to connect with the standard section through bolts. This method will waste a lot of time when hoisting the standard section, and Drilling holes on the straight web bar of the standard section also increases the complexity of the process, and also has potential safety hazards. In order to better solve the above problems, it is necessary to design a new type of imported standard section device.

Utility model content

Aiming at the above-mentioned problems in the prior art, the utility model provides a device for introducing a standard section of a tower crane, which can quickly and conveniently introduce a standard section, and at the same time eliminate some potential safety hazards.

In order to achieve the above purpose, the technical solution adopted by the utility model is: an introduction device for a standard section of a tower crane, including an introduction trolley and a single-leg chain hook, and the single-leg chain hook is fixed by a pin shaft and a cotter pin On the introduction trolley.

Further, there are four single-leg chain hooks.

Working principle: Fix the single-leg chain hook on the lead-in vehicle with a pin shaft and cotter pin, and after the single-leg chain hook bypasses the uppermost horizontal web bar of the standard joint, the lifting hook will lift the lead-in with the standard joint installed. The trolley rises to the height of the lead-in beam, rotate the tower crane to align the lead-in trolley with the lead-in beam, lower the lead-in trolley so that the rollers just fall on both sides of the lead-in beam, and continue to lower the hook so that the standard section enters the tower body.

The beneficial effect is that the standard joint can be quickly introduced by adopting the structure of the single-leg chain hook, and the actual operation is simple and practical. Adopting the form of 4 single-leg chain hooks, its structure is symmetrical, has high stability and reliability, and eliminates some unsafe factors.

Description of drawings

Fig. 1 is the schematic diagram of the working state of the utility model;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is a structural representation of the utility model;

FIG. 4 is a top view of FIG. 3 .

In the figure: 1, the introduction of beams, 2, the introduction of trolleys, 3, single-leg chain hooks; 4, pin shafts, 5, cotter pins, 6, standard joints.

Detailed ways

The utility model will be further described below in conjunction with accompanying drawing.

As shown in Figures 2 to 4, an introduction device for a standard section of a tower crane includes an introduction trolley 2 and a single-leg chain hook 3, and the single-leg chain hook 3 is fixed on the introduction trolley through a pin shaft 4 and a cotter pin 5. 2; single-leg chain hook 3 can be four.

As shown in Figure 1, use the hook to lift the imported trolley 2. When hanging the imported trolley 2, pay attention to make the opening of the single-leg chain hook 3 face away from the direction of the welding baffle of the imported trolley 2. The advantage of this is that the imported trolley 2 After being hung on the introduction beam 1, it is easy to unhook. Move the introduction trolley 2 above the standard section 6 and lower it, so that the four single-leg chain hooks 3 of the introduction trolley 2 are aligned with the hoisting position on the uppermost horizontal web bar of the standard section 6. At this time, use the pin shaft 4 and the cotter pin 5 Fix the single-leg chain hook 3 on the introduction lower 2, and at the same time make the single-leg chain hook 3 go around the uppermost transverse web bar of the standard section 6. That is to hang the single-leg chain hook 3 according to the position shown in Figure 1 to ensure safety. At the same time, it should also be noted that the direction of the introduction of the trolley 2 should be that the side of the introduction trolley 2 with the baffle is close to the standard joint 6 and welded with jacking steps side.

In the next step, lift the hook to raise the introduction trolley 2 with standard section 6 to the height of the introduction beam 1, turn the tower crane to align the introduction trolley 2 with the introduction beam 1, and lower the introduction trolley 2 so that its rollers just fall into the Introduce both sides of the crossbeam 1, and continue to lower the hook so that the standard section 6 enters the tower body.

Claims (2)

1. the imported unit of a column crane mast section is characterized in that, comprises introducing dolly (2) and single leg chain suspension hook (3), and described single leg chain suspension hook (3) is fixed on by bearing pin (4) and spring cotter (5) and introduces on the dolly (2).

2. the imported unit of a kind of column crane mast section according to claim 1 is characterized in that, described single leg chain suspension hook (3) is four.

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