Tower crane standard section bolt locking device

Abstract

The utility model discloses a tower crane standard knot bolt locking device, which comprises a tower crane standard knot and a standard knot nut, and is characterized in that the standard knot nut is matched with a nesting hole formed in a circular main plate, and the nesting hole is a hole formed by sequentially connecting 24 straight edges end to end and forming twelve corners; the size of the nesting hole is larger than that of the standard knot nut; the side end of the circular main plate is connected with the connecting plate, the circular main plate is perpendicular to the connecting plate, the connecting plate is in threaded connection with the fixing bolt through the threaded hole, the fixing bolt is perpendicular to the outer surface of the standard knot of the tower crane, and the fixing bolt is in threaded connection with the fixing nut. The device is simple in structure, convenient to install, reliable in fixation, low in cost and high in reusability, and the labor cost and the safety risk of manually and frequently assembling and disassembling the tower crane fastening nut can be reduced.

Description

Technical Field

[0001] The utility model relates to a tower crane standard section bolt anti-loosening device, belonging to the technical field of building construction. Background Art

[0002] A tower crane, or tower crane for short, is a type of lifting equipment used on construction sites. Its tower body is composed of several standard sections connected to each other by high-strength bolts, ensuring that it can reach working heights of hundreds of meters. During tower crane construction, in a frequently vibrating working environment, the connecting bolts of the tower crane's standard sections are very likely to loosen, which can easily lead to major safety accidents. Therefore, measures to prevent the loosening of tower crane standard section bolts are particularly important. Traditional methods for preventing the loosening of tower crane standard section bolts include installing warning nuts and adding counter nuts. The function of the warning nut is to emit warning signals such as sound and light when the nut is loose. The function of the counter nut is to increase friction between the two nuts to prevent the bolt from loosening. None of the above methods can completely prevent the loosening of standard section bolts due to the frequent vibration of the tower crane, and cannot guarantee that the standard section bolts will remain fixed under frequent vibration. In addition, the existing anti-loosening devices for tower crane standard section nuts are cumbersome to install, costly, and have poor versatility, and cannot accommodate various working conditions. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and to provide a tower crane standard section bolt anti-loosening device.

[0004] The technical solution provided by the utility model is as follows: a tower crane standard section bolt anti-loosening device, which includes a standard section and a standard section nut of the tower crane, and is characterized in that the standard section nut is adapted to a nesting hole opened in a circular main board, the nesting hole is a hole formed by connecting twenty-four straight edges end to end in sequence to form twelve corners, and the size of the nesting hole is larger than the size of the standard section nut; the side end of the circular main board is connected to the connecting plate, the circular main board and the connecting plate are perpendicular to each other, the connecting plate is threadedly connected to the fixing bolt through the threaded hole, the fixing bolt is perpendicular to the outer surface of the standard section of the tower crane, and the fixing bolt is threadedly connected to the fixing nut.

[0005] Furthermore, a chamfer is provided on the top of the fixing bolt.

[0006] The utility model has the following beneficial effects: the utility model comprises a circular main plate, a connecting plate, a fixing bolt, and a fixing nut; the circular main plate and the connecting plate can be cut and made from steel plates; the nesting hole in the circular main plate is a hole composed of 24 straight sides connected end to end to form 12 angles, which is compatible with the standard segment nut of the tower crane. Since the standard segment nut of the tower crane is hexagonal, the same standard segment nut of the tower crane can be installed at two angles, with an included angle of 30 degrees, so the fixing bolt has a 30-degree adjustment angle; the size of the nesting hole is slightly larger than the size of the standard segment nut, which can cope with the situation where the nut is rusted or has dirt on the surface. The circular main plate and the connecting plate are perpendicular to each other, and the connecting plate has a threaded hole that cooperates with the fixing bolt to adjust the fixing tightness and compensate for the fit clearance, thereby minimizing the loosening margin of the nut; the top of the fixing bolt is chamfered, and the fixing bolt is perpendicular to the outer surface of the standard segment of the tower crane, which not only prevents it from being unable to continue to be used due to wear due to harsh working environments, but also enables the utility model to withstand large axial loads and is not prone to radial rotation, and is suitable for working conditions at various distances. The utility model has the advantages of simple structure, convenient installation, reliable fixation, low cost, strong reusability, etc., and can reduce the labor cost and safety risks of manually tightening nuts on and off the tower crane frequently. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural diagram of the utility model;

[0008] Figure 2 It is a top view of the utility model;

[0009] Figure 3 It is a side view of the utility model;

[0010] Figure 4 This is a structural diagram of the circular main board and connecting board of the utility model;

[0011] In the figure: 1. Round main board; 2. Nesting hole; 3. Connecting plate; 4. Fixing bolt; 5. Fixing nut; 6. Standard section; 7. Standard section nut. DETAILED DESCRIPTION

[0012] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings:

[0013] like Figure 1-Figure 4As shown, a tower crane standard section bolt anti-loosening device includes a circular main plate 1 with a nesting hole 2 defined therein. The nesting hole 2 is a hole formed by connecting 24 straight sides end to end to form 12 corners. The nesting hole 2 is adapted to the tower crane standard section nut 7, and the size of the nesting hole 2 is slightly larger than that of the standard section nut 7. The side end of the circular main plate 1 is connected to a connecting plate 3. The circular main plate 1 and the connecting plate 3 are perpendicular to each other. The connecting plate 3 has a threaded hole, through which the connecting plate 3 is threadedly connected to a fixing bolt 4. The top of the fixing bolt 4 is chamfered. The fixing bolt 4 is perpendicular to the outer surface of the tower crane's standard section 6 and is threadedly connected to a fixing nut 5.

[0014] When in use, first nest the circular main board 1 in the middle position of the standard section nut 7 of the tower crane through the nesting hole 2, try to make the fixing bolt 4 screwed on the connecting plate 3 perpendicular to the outer surface of the standard section 6 of the tower crane, then tighten the fixing bolt 4 to support the outer surface of the standard section 6; finally, tighten the fixing nut 5.

[0015] It should be understood that any portion not elaborated in detail in this specification belongs to the prior art. The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications and improvements to the technical solution of the present invention made by a person of ordinary skill in the art without departing from the spirit of the present invention shall fall within the scope of protection defined by the claims of the present invention.

Claims

1. A tower crane standard section bolt anti-loosening device, comprising a tower crane standard section (6) and a standard section nut (7), characterized in that The standard section nut (7) is adapted to the nesting hole (2) provided in the circular main plate (1). The nesting hole (2) is a hole formed by connecting 24 straight edges end to end in sequence to form 12 corners. The size of the nesting hole (2) is larger than the size of the standard section nut (7). The side end of the circular main plate (1) is connected to the connecting plate (3). The circular main plate (1) and the connecting plate (3) are perpendicular to each other. The connecting plate (3) is threadedly connected to the fixing bolt (4) through the threaded hole. The fixing bolt (4) is perpendicular to the outer surface of the standard section (6) of the tower crane. The fixing bolt (4) is threadedly connected to the fixing nut (5).

2. A tower crane standard section bolt anti-loosening device according to claim 1, characterized in that The top end of the fixing bolt (4) is chamfered.

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