CN101942806B - Bridge girder erection machine protective guard - Google Patents

Abstract

The invention discloses a bridge girder erection machine protective guard, belonging to the technical field of hoisting equipment. The bridge girder erection machine protective guard comprises a rectangular fence composed of two lateral guardrails and a longitudinal guardrail; the two lateral guardrails are centrosymmetric, and the connection part thereof is provided with a lock catch; the lateral guardrail is connected with the longitudinal guardrail in a rotary manner; a steering draw bar is arranged between the included angle of the two guardrails; the longitudinal guardrail is provided with a trapezoid frame extending upwards; the longitudinal guardrail is connected with the trapezoid frame by a connecting rod; the front part and the rear part of the tail end of the trapezoid frame are respectively provided with a front flange and a rear flange; a rear supporting foot protective frame is arranged at the front part of the tail end of the trapezoid frame. The ridge girder erection machine protective guard of the invention has low cost, simple manufacture and convenient dismounting, saves storage space, is convenient for transportation, and can give full play of the advantages of the mechanized operation of cranes, thus greatly improving the operating efficiency, lightening the labor intensity of workers, and being suitable for erecting use of various simply supported beams.

Description

Bridge erecting machine guardrail

Technical field

The invention relates to a protective auxiliary machine tool for hoisting and hoisting equipment, in particular to a protective fence used when building a bridge, and belongs to the technical field of hoisting and hoisting equipment.

Background technique

At present, box girder erection is set for high-altitude operations, and bridge erecting machines operate between bridge piers. The staff need to work on the pier, and there is no protection around the pier before the box girder is erected. If a protective device is installed on the pier before the erection of the box girder, not only the engineering volume is large, but also a large amount of manpower and material resources are required to install the protective device, which virtually increases the cost.

Contents of the invention

In view of the above problems, the present invention provides a protective fence connected with a bridge erecting machine.

The technical solution adopted by the present invention to solve the technical problem is: the protective fence of the bridge erecting machine includes a rectangular fence composed of a horizontal fence and a vertical fence; The guardrail is connected to the longitudinal guardrail by rotation, and a steering rod is provided at the angle between the two guardrails; the longitudinal guardrail is provided with a trapezoidal frame extending upwards, and the two are connected by connecting rods; the front and rear ends of the trapezoidal frame are respectively provided with a front flange and a rear flange Lan, the front of the end of the trapezoidal frame is provided with a rear foot protection frame.

The invention has the beneficial effects of low cost, simple manufacture, convenient assembly and disassembly, saving storage space, and convenient transportation. It is easy to operate, provides a safe working space for operators on the pier, can ensure construction safety, and is convenient for transfer and disassembly. The hoisting operation adapts to a variety of conditions and needs, gives full play to the advantages of hoisting mechanized operations, greatly improves work efficiency, avoids excessive use of labor in harsh environments, reduces the labor intensity of workers, and greatly improves hoisting equipment, The safety of components and the personal safety of operators. It can give full play to the advantages of mechanized lifting operations, greatly improve work efficiency, and reduce the labor intensity of workers. The invention is not limited by the working height and space of the workplace, and is suitable for the erection of various simply supported beams.

Description of drawings

Fig. 1 is a front view of the present invention;

Figure 2 is the left view of Figure 2

Fig. 3 is the top view of Fig. 2;

Fig. 4 is another state diagram of Fig. 2;

Fig. 5 is a perspective view of the present invention (rear and bottom view direction of Fig. 1).

Detailed ways

Below in conjunction with embodiment the present invention is further described.

As shown in Figure 1-5, the guardrail of the bridge erecting machine includes a rectangular fence composed of a horizontal guardrail 1 and a longitudinal guardrail 2; the horizontal guardrail 1 is two symmetrical guardrails with a lock 1-1 at the connection; 1 is connected to the longitudinal guardrail 2 in rotation, and a steering rod 2-2 is provided at the angle between the two guardrails; the longitudinal guardrail 2 is provided with an upwardly extending trapezoidal frame 3, and the two are connected by a connecting rod 2-1; the front of the end of the trapezoidal frame 3 and the A front flange 3-1 and a rear flange 3-2 are respectively arranged at the back, and a rear leg protection frame 3-3 is arranged in front of the end of the trapezoidal frame 3 .

A mounting rod is connected between the front flange 3-1 and the rear flange 3-2 of the trapezoidal frame 3; the mounting rod is connected with the rear outrigger of the bridge erecting machine, and the rectangular fence is seated on the pier.

Since the guard rail is attached to the rear outrigger of the bridge erecting machine, no additional power is required to move it. When the bridge erecting machine passes through the hole, the guardrail is transformed to the state shown in Figure 4 through the stretching of the steering rod 2-2, and the guardrail moves forward with the bridge erecting machine; after the bridge erecting machine passes the hole in place , through the shrinkage of the steering rod 2-2, it is converted to the working state shown in Figure 4; the center of the horizontal guardrail 1 is locked by the lock 1-1, and forms a rectangular guardrail with the longitudinal guardrail 2, as shown in Figure 3, Protect the safety of workers on bridge piers. Rear foot protection frame 3-3 is for the safety design of the operator on the box girder.

Claims (1)

1. a bridge girder erection machine protective guard comprises the rectangle fence that is made of horizontal guardrail (1) and profile barrier (2), it is characterized in that, and two fan guardrails of symmetry centered by the horizontal guardrail (1), its junction is provided with snap close (1-1); Laterally guardrail (1) is rotatably connected with profile barrier (2), and two guardrail angles are provided with steering linkage (2-2); Profile barrier (2) is provided with upwardly extending ladder-shaped frame (3), and the two is connected by connecting rod (2-1); The terminal front and back of ladder-shaped frame (3) is respectively equipped with forward flange (3-1) and rear flange (3-2), and the front of the end of ladder-shaped frame (3) is provided with rear leg protective frame (3-3).

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