JPS6350345Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to the provision of joint metal fittings for bundled columns constituting a protection structure.

Currently, temporary fall protection is required to be installed in areas where there is a risk of falling, such as passageways such as gantry truck bridges, edges of work floors, and loading openings.

That is, as shown in FIG.
In the case of passages and work floors on which lining plates 2,... are mounted, bundle columns 4,... are erected on single pipe bases 3,... provided on the H-joist 1 or lining plates 2. A fall protection structure is assembled on site by installing a handrail 5 and a support beam 6 horizontally, and as shown in Figure 2,
Similar measures are taken for the loading opening 7 as well.

In areas where safety is particularly important, the standards of the Labor Standards Bureau require that the height of handrail posts (bundle posts) be at least 90 cm (above the work floor).

However, at this height, in the case of truck bridges, when a crawler crane or the like (rotation height 70cm) is working to cut underground roots, the clamshell weights become an obstacle, and the opening for loading It is also a hindrance to the loading and unloading of goods.

In such cases, it is necessary to temporarily remove the handrail, but in the case of conventional handrails, the part of the handrail that is higher than the clamshell weight must be made removable, or Although the bundle post is constructed to be foldable, it has the disadvantage that not only is it time-consuming to remove or fold it, but also a lot of steps and costs are required for installation.

This invention was created in view of the above drawbacks.
The gist of this is that between the rear surfaces of plate arms on both sides of mutual pin hinges in clamps arranged in parallel, one side of one spacing plate is fixed, and the other side of the spacing plate is rotated via the fixing plate. The spacer plate is pivotally connected to be movable, one side of the spacer plate is fixed between the plate arms on the other side, and the other side of the spacer plate is removably attached via the fixing plate to form a joint hardware. By holding the ends of the bundled columns to be added with both clamps, the removable part locks the joint between the bundled columns, and
Assuming that the bundle post is folded by rotating around the pivot point after releasing the lock,
The point is that the upper part of the handrail and the bundle pillar can be arbitrarily lowered quickly without requiring any effort for installation.

This will be explained in detail below based on the drawings.

Figure 3 is a plan view of the proposed product in which the rocking bolt for fastening the plate arm is hidden behind.
8' is a clamp in parallel relationship, 9, 9' is a pin hinge, 10, 10' is a plate arm on one side on both sides of the pin hinge 9, 9', and 11, 11' is a clamp on the other side plate arm, etc. Each component is shown below.

In this case, a spacer plate 12 is integrally installed between the back surfaces of the plate arms 11' and 11 with fixation such as welding 13, and is constructed by rotatable pivoting such as caulking 15 via an attached fixing plate 14. On the other hand, a spacer plate 16 is also fixed between the plate arms 10' and 10 by a removable locking means such as a pin 19 via an attached clamping fixing plate 18 by fixing it by welding 17 or the like. erect.

Thus, the clamps 8, 8', the spacing plates 12, 1
The quadrilateral frame consisting of 6 is fixed with a lock made by a pin 19, and the lock is released and rotated using the crimping 15 as a fulcrum, so that it can be divided and deployed. , 8' hold the ends of the bundle columns 20, 20', respectively, so that the bundle columns can be joined and folded.

Fig. 4 is a bottom view of the proposed product, and 21 in the figure indicates the swing bolt for fastening the plate arm in the clamp 8, and the swing bolt for fastening the plate arm in the other clamp 8'. is hidden and does not appear in the diagram.

Reference numeral 22 denotes a rivet for attaching a chain which is preferably attached to the plate arm 10, and this rivet serves to hold the pin 19 through the chain 23 as shown in the figure and to prevent powder from being lost. A swinging piece 24 is pivotally fixed at an eccentric position at the tip of the pin 19, and when locked, the swinging piece 24 is automatically prevented from falling off.

Therefore, the appearance of the plan and elevation of this product with the above-mentioned configuration when viewed from the back side is as shown in FIGS. FIG. 6a shows a state in which the pins 19 are held and the pins 19 are locked, and FIG. 7th
Figures a and b are representations of Figures a and b in the form of protection works.

The proposed product described above has the features listed below and is extremely suitable in practice.

a) Because it has a pin structure, it can be rotated by simply removing the insertion pin without removing the clamp, etc. Also, once installed, no special tools are required until disassembly.

(b) Since the tube is fixed to the bundle column using a clamp, any length of single tube for the bundle column can be used, and the height can be changed freely.

c Since the structure is such that rotational movement will not be affected even if the upper and lower bundle pillars are touched in the set state, there will be no concerns such as rattling due to the contact between the upper and lower bundle pillars.

d It has a very simple structure.

[Brief explanation of the drawing]

Figures 1 and 2 are explanatory diagrams of the protective work installation locations, Figure 3 is a front view of the proposed product, Figure 4 is a bottom view, and Figures 5 a and b are plan, elevation, and bottom views of the proposed product. Figures 6a and 6b and 7a and 7b are explanatory diagrams of the operation of the product. 8, 8'... Clamp, 12, 16... Spacing plate,
15... caulking, 19... pin, 10,10',
11, 11'...Plate arm.

Claims (1)

[Scope of utility model registration request] Between the back surfaces of the plate arms on both sides of the mutual pin hinges in the clamps arranged in parallel, one side of one spacing plate is fixed, and the other side of the spacing plate is rotatably pivoted via the fixing plate, between the plate arms on the other side, fix one side of the spacing plate;
A support joint hardware, characterized in that the other side of the spacer plate is removable via a fixing plate.