JPS6411553B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a main frame of a curved escalator having a conveyance path having an arcuate shape in a horizontal projection plane.

[Conventional technology]

The circular curved escalator is provided with a main frame that forms a circular arc in a horizontal projection plane and constitutes a conveyance path having upper and lower horizontal parts and an inclined part connected to the horizontal parts.

That is, in the circular curved escalator 1, as shown in FIG. 1, the conveying path 2 along which the step 3 moves is formed in a spiral shape, and in a horizontal projection plane, it is formed in an arc shape as shown in FIG. The step 3 is connected to an endless belt 5 housed in a main frame 4, and is driven together with a handrail 7 by a drive source 6. It has been proposed to configure units by connecting them.

Further, FIG. 3 is a diagram showing a horizontal projection plane of the main frame 40 constructed by connecting a large number of truss units, truss units 40a, 40b, 40c...4
0n are arranged in series with each other on a curved line connected by smooth circular arcs drawn with radii of curvature R ₁ to R ₅ centered on centers 0 ₁ to 0 ₅ . In the polygonal truss constituted by the truss units 40a, 40b, 40c, .

Further, the upper and lower chord members forming the horizontal portion of the truss and the upper and lower chord members forming the sloped portion of the truss are connected so as to be bent only at the intersections of these horizontal portions and the sloped portion. The above-mentioned chord members are provided with vertical longitudinal members, and cross members are installed horizontally between the outer truss and the inner truss, and escalator rails are provided on these cross members along the longitudinal direction of the conveyance path.

[Problem to be solved by the invention]

However, in the past, since the above-mentioned chord members were connected only at the intersections with the horizontal and inclined parts of the truss, it was difficult to determine the target installation position. The installation work of the horizontal members placed between the timbers was complicated. Furthermore, centering the truss was troublesome because there was no suitable reference point.

The present invention has been made based on the above-mentioned circumstances, and is capable of easily attaching the vertical members between the upper and lower chord members of a polygonal truss, and the cross members that are hung horizontally thereon, and also provides connection in the longitudinal direction of the truss. The purpose is to provide a main frame for a curved escalator that facilitates centering.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention cuts or bends a vertical connection part or a vertical bending part along the vertical direction of the main frame at the bending point of the chord material, and forms the main frame at the bending point of the main frame at the bending point. On the inside, a vertical member is hung parallel to the attachment surface of the connecting part or the bent part, and a horizontal member is installed horizontally between the inner and outer vertical members, and the vertical member has a polygonal shape. The present invention is characterized in that a cross member mounting surface is formed that is oriented toward the center of curvature of the chord member.

[Effect]

In the present invention, a vertical connection part or a vertical bending part is formed at the bending point of the chord member, and the vertical member is placed in this part in the vertical direction of the main frame, so that the target installation position is clear when installing the vertical member. Become. Further, since a cross member mounting surface is formed on the vertical member and the cross member is fixed to this portion for horizontal suspension, the cross member can be reliably oriented to the center of curvature of the chord member.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 4 is a side view of an outer truss in a truss constructed by connecting truss units, and FIG. 5 is a side view of the inner truss. In these figures, A ₁ , A ₂ , D ₁ , D ₂ and B ₁ , B ₂ , E ₁ ,
A truss 40 is constructed by making E ₂ face each other and forming a cube and connecting them to A _o , D _o and B _o , E _o as one unit.

Truss unit 40a, 40b, 40c...40
n is the four sides formed by the upper chord member 41, the lower chord member 42, the vertical member 43 provided vertically between the upper and lower chord members 41 and 42, and the upper and lower chord members 41 and 42 and the vertical member 43. It has a diagonal member 44 extending across the shape.

The above-mentioned outer truss and inner truss are formed in a shape in which a horizontal portion H and an inclined portion S at both ends are connected by a bent portion B as shown in the figure. In this bent part B, the upper chord member 41 and the lower chord member 42 are bent in multiple stages, two stages in this embodiment, and are connected to the horizontal part H and the inclined part S, respectively.

By the way, in the past, the horizontal part H and the inclined part S were bent only at their intersections as shown by the imaginary line F, which had the above-mentioned drawbacks, but in the present invention, as described above, The upper and lower chord members are connected to the linear inclined portion S through a bent portion B which is bent into multiple stages, and a vertical member 43 is provided at the bending point of the bent portion B. That is, as shown in the side view of the outer truss in FIG. 6 and the side view of the inner truss in FIG.
A horizontal member 45 is placed horizontally in the truss width direction between the inner vertical member 43 and the outer vertical member 43. A horizontal member mounting surface 43a is formed on the side of the vertical member 43 as shown in FIG.
are the upper and lower chord members 41 and 4 shown in FIGS. 6 and 7.
At the bending points b ₁ - _{c 1} , b ₂ - c ₂ , b ₃ - c ₃ of 2, the action is directed toward the center position of the polygonal chord members 41, 42. However, due to this, the vertical members 43, 43
As shown in FIG. 8, the horizontal member 45 suspended between the two is installed parallel to the lines l ₁ , l ₂ , l ₃ that connect the center of curvature of the polygonal chord member and the vertical members 43, 43. It happens. Therefore, the cross member 45 is inevitably oriented toward the center of curvature of the truss, and the work of installing the cross member 45 becomes extremely easy.

The above bending points b ₁ - _{c 1} , b ₂ - c ₂ , b ₃ - c ₃ are not vertical bends formed by bending the main frame along the vertical line with respect to the floor (not shown), but are formed along the vertical line. It may also be a vertical connection formed by cutting. This connection does not need to be entirely vertical, as long as at least the position where the tip of the vertical member 43 is attached is vertical.

FIG. 9 and FIG. 10 are an enlarged plan view and an enlarged side view of a vertically bent portion or a vertically connected portion of a chord member. To explain in more detail based on these figures, the vertical member 43 is fixed at one end with the vertical bent part or vertical connection part 46 of the upper chord members 41, 41 as the target, and the lower chord member (not shown) is also bent vertically. If the other end of the vertical member 43 is fixed with the vertical connection part as the target, the vertical member 4
3. Installation positioning can be done extremely easily.

[Effects of the Invention] With the above configuration, the work of attaching the horizontal members in the truss width direction to the vertical members toward the center of curvature of the truss is facilitated, and the cross members can be installed perpendicular to the horizontal members. It also makes it easier to center the rail. In addition, since the vertical members can be placed with the vertical bends or vertical connections of the strings as the target, the installation work becomes easier, and the strength of the bends or connections of the strings where the load is concentrated is increased by this. Increased by placing longitudinal members in the section. Furthermore, the work of centering the truss becomes easier.

[Brief explanation of drawings]

Fig. 1 is an external view of the curved escalator, Fig. 2 is a plan view thereof, Fig. 3 is a plan view of the truss,
4 and 5 are side views of the outer truss and the inner truss constituting the truss, FIGS. 6 to 10 show an embodiment of the present invention, and FIG. 6 shows the main frame as described above. FIG. 7 is a partially cutaway side view of the inner truss, FIG. 8 is a partially cutaway plan view of the truss, and FIG. 9 is a partially cutaway side view of the outer truss. FIG. 10 is an enlarged partially cutaway plan view of the connecting portion, and FIG. 10 is an enlarged partially cutaway side view thereof. 41 is the upper chord member, 42 is the lower chord member, 43 is the longitudinal member, 4
3a is the horizontal member mounting surface, 45 is the horizontal member, b ₁ to _{b 3} , c ₁ to _{c 3}
...bending point, 46...vertical bending part or vertical connection part.

Claims (1)

[Claims] 1. In the main frame of a curved escalator in which the chord members are composed to form a polygonal shape in the horizontal projection plane, the vertical connection part or the vertical bent part along the vertical direction of the main frame is cut or bent at the bending point of the chord member. The main frame is formed by bending, and vertical members are installed vertically on the inside of the main frame at these connecting parts or bent parts in parallel to the mounting surface of the connecting parts or bent parts, and horizontal members are installed horizontally between the inner and outer vertical members. Stack,
A main frame of a curved escalator, characterized in that the vertical member is provided with a cross member mounting surface that directs the cross member to the center of curvature of the polygonal chord member.