JPH04297653A - Handrail device - Google Patents

Abstract

PURPOSE:To facilitate fitting without unreasonable forces to be loaded to welding sections at the time of the fitting. CONSTITUTION:A device is composed of a plurality of horizontal members 1A, 1B, leg members 2A, 2B, and single fitting base plates 3 with the lower ends of the same side leg members 2A, 2B fixed by welding, and the fitting base plates 3 are provided with bolt holes 4. The fitting base plates 3 are fitted on the party members with bolts.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail device suitable for use as a protective fence for construction machinery such as large crawler cranes.

0002

[Prior Art] FIG. 2 shows an example of a conventional handrail device T.
It consists of an arbitrary number, for example, two horizontal members 1A, 1B, leg members 2A, 2B, and separate mounting base plates 5 to which the lower ends of each leg member 2A, 2B are respectively fixed by welding. Each mounting base plate 5 is provided with a bolt hole 4. Each mounting base plate 5 is fixed to a mating member with bolts.

0003

[Problem to be solved by the invention] Such a handrail device T
Due to problems such as dimensional accuracy when attaching to the mating member,
Unreasonable forces such as tension, compression, twisting, and bending are easily applied to the mounting part. Particularly, those installed in areas where vibration occurs may be damaged due to cracks occurring at the welded portions that correspond to the bases of the leg members 2A, 2B. The purpose of the present invention is to eliminate these difficulties very easily.

0004

[Means for Solving the Problems] The handrail device of the present invention includes:
It is characterized in that the lower ends of the plurality of leg members on the same side are fixed to a single mounting base plate by welding.

[0005]

[Operation] Fix the mounting base plate to the mating member with bolts.

[0006]

[Embodiment] An embodiment of the present invention will be described below with reference to FIG. In this figure, the same members as in FIG. 2 are indicated by the same symbols.

The lower ends of the two leg members 2A and 2B are fixed to a single mounting base plate 3 by welding. The mounting base plate 3 is provided with an arbitrary number of bolt holes 4, for example four. The mounting base plate 3 is fixed to a mating member with bolts. Since the mounting base plate 3 is a single piece, the horizontal members 1A, 1
B. When attaching the handrail device T consisting of the leg members 2A, 2B and the mounting base plate 3 to a mating member, no unreasonable force is applied to the welded parts.

[0008]

[Effects of the Invention] According to the invention described above, it is advantageous in terms of strength because no unreasonable force is applied to the welded parts during installation, and since dimensional accuracy can be maintained, installation work is easy and workability is improved. improves. In addition, deformation and damage during storage and transportation as parts can be reduced.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention;

FIG. 2 is a perspective view showing an example of a conventional handrail device.

[Explanation of symbols]

T Handrail device 1A Horizontal member 1B Horizontal member 2A Leg member 2B Leg member 3 Mounting base plate 4 Bolt hole

Claims (1)

[Claims] [Claim 1] The lower ends of the plurality of leg members on the same side,
A handrail device characterized by being fixed to a single mounting base plate by welding.