JPS6411554B2 - - 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 forming an arc of constant curvature in a horizontal projection plane.

[Conventional technology]

The circular curved escalator is provided with a main frame that forms a constant arc of curvature 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 in series with each other in the circumferential direction, and the centers 0 ₁ to 0 ₅
It is placed on a curve connected by smooth circular arcs with radii of curvature R ₁ to R ₅ centered at . In the truss formed by the truss units 40a, 40b, 40c, . It was connected directly.

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 the 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, the chord members were connected only at the intersections with the horizontal and inclined parts of the truss, so the height from the top of the truss to the rolling surface of the rail was not constant at the installation position of the vertical member. , centering the rails, etc. required a great deal of labor and time, increasing production costs.

Additionally, since each truss had a different cross-sectional shape, the brackets attached to the vertical members were not standardized, increasing the number of parts and making it difficult to reduce product costs. Furthermore, since the truss unit itself is formed in a straight line, there is a problem in that it is difficult to center the rails in the truss unit in the radial direction, which are arranged with a certain curvature.

The present invention has been made based on the above-mentioned circumstances, and an object of the present invention is to provide a main frame for a curved escalator that facilitates the radial centering of the rails, the fabrication of the truss unit, and the assembly of the truss.

[Means to solve the problem]

The main frame of the curved escalator according to the present invention is composed of a large number of truss units connected in series in the circumferential direction to form a truss that forms an arcuate polygon in the horizontal projection plane, and the truss unit has the following features:
A plurality of upper and lower chord members are provided outside the main frame, and a plurality of upper and lower chord members are provided inside the main frame, and a vertical member provided vertically between each upper and lower chord member is installed inside the main frame. Horizontal members arranged on the outside and inside to which the rails are attached are horizontally suspended between the outer vertical member and the inner vertical member, and each of the plurality of chord members is connected to the corresponding chord member of each of the vertical members. At the mounting position, the truss is bent into a polygon according to the curvature of the truss in the horizontal projection plane.

[Effect]

In the present invention, the plurality of upper and lower chord members of the truss unit are bent into polygonal shapes at the mounting positions of the vertical members, respectively, according to the curvature in the horizontal projection plane of the truss, so that a linear truss unit without bending the main frame can be achieved. Compared to this, it is more similar to a truss unit using a curved main frame.

〔Example〕

The present invention further bends the truss units at multiple locations to match the curvature in the horizontal projection plane of the truss, which forms an arcuate polygon in the horizontal projection plane by connecting a large number of truss units in series in the circumferential direction. , which makes the main frame more similar to a curved main frame.

An embodiment of the present invention will be described below with reference to the drawings. Figure 4 is a side view of the outer truss in a truss constructed by connecting truss units; Figure 5 is a side view of the outer truss;
The figure is also 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 and E ₂ are made to face each other and formed into a cube.
A truss 40 is constructed by connecting A _o , D _{o ,} B _o , and E _o as a unit.

Truss unit 40a, 40b, 40c...40
n is a plurality of upper chord members 41 and a plurality of lower chord members 42
and a vertical member 43 provided vertically between the plurality of upper and lower chord members 41 and 42, and a vertical member 43 that extends across the quadrilateral formed by the plurality of upper and lower chord members 41 and 42 and the longitudinal member 43. and diagonal members 44.

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, but in the present invention, the above-mentioned,
The lower chord member is connected to the linear inclined portion S via the bent portion B in a plurality of stages. Each of the above truss units 40a, 40b, 40c...40n
is constructed as follows. That is, as shown in FIGS. 6 to 8, for example, the truss unit 40
a is a plurality of upper chord members 41 and lower chord members 42 on the outside of the main frame, a diagonal member 44 extending diagonally between the plurality of upper chord members 41 and lower chord members 42, and a plurality of upper chord members 41 and lower chord members 42 on the inside of the main frame. The upper chord member 41 and the lower chord member 42, the vertical member 43 on the outside of the main frame, which extends vertically between the upper chord member 41 and the lower chord member 42, and the vertical member 43, which extends vertically between the upper chord member 41 and the lower chord member 42, It is three-dimensionally assembled into a substantially rectangular cylindrical shape by a vertical member 43 inside the main frame and a horizontal member 45 which is suspended between the vertical members 43 and 43 and to which a rail is attached. In this case, as shown in FIG. 8, each truss unit has a plurality of upper and lower chord members 41 and 42 on the outside and inside thereof at the positions where the vertical members 43 are attached to the chord members, and in the horizontal projection plane of the truss. Each is bent and formed into a polygon according to the curvature of. This bending angle is from the center 0 ₁ to 0 ₅ shown in FIG. 3 to the radius R ₁ to
The angle is such that each bent side of the chord material follows the arc drawn by R ₅ . By bending and forming a plurality of chord members in this way, it becomes easy to attach the vertical members 43 at the bending points b ₁ to b ₃ and C ₁ to C ₃ . Furthermore, this vertical member 43, 43
A cross member 45 with a rail attached is horizontally suspended between them, and this cross member 45 also automatically bends at the bending point b ₁ -
It is parallel to the lines l ₁ , l ₂ , _{l 3} that connect b ₁ , b ₂ - b ₂ , b 3 - _{b 3} .

Vertical members 43' are also arranged at both ends of the truss unit 40a in the circumferential direction, and if these vertical members 43' are also attached to the ends of the chord members bent as described above, they will automatically be connected to the centers 01 to ₁₀ . It will be oriented to either 0 or ₅ . Therefore, the cross member 45 that is horizontally suspended between the vertical members 43' and 43' is also parallel to the line lm toward the centers ₀₁ to ₀₅ . Each of the vertical members 43 is provided with a connecting portion 60 for connecting with the adjacent truss unit, and the butting surfaces of the connecting portions 60 are located on the same plane obtained by cutting in the vertical direction along the line lm. is configured to do so. The above configuration facilitates connection with adjacent truss units.

FIG. 9 is a cross-sectional view of a curved escalator using the main frame of the above-mentioned truss.
are provided facing each other, and one of the vertical members 43 is also provided with a rail bracket 52. The rails 47 and 48 attached to the bracket 46 and the rail 51 attached to the bracket 52 are configured so that drive rollers 49 and 54 provided on axles 50 and 53 to which steps (not shown) are fixed face, respectively. has been done.

When installing the above-mentioned rail brackets 46 and 52, in the present invention, as described above, the vertical members 43 are arranged to match the curvature of the truss, so they can be installed at predetermined positions with reference to the outer or inner vertical members. Therefore, centering of the rails 47, 48, 51 becomes easy.

〔Effect of the invention〕

In the present invention, as described above, each chord member is bent into a polygonal shape according to the curvature of the truss at the attachment position of the longitudinal members, so that the truss unit more closely resembles a curved shape, and the truss unit is suspended horizontally between the longitudinal members. This makes it easier to center the rails that are attached to the cross members, and the installation space can be reduced.

In addition, in the case of a curved main frame, even if truss units are connected, each truss unit itself inevitably becomes a segmented circular arc, making it difficult to manufacture. If it is a polygonal shape that is bent at certain points, it will be easier to manufacture and it will be possible to reduce the manufacturing cost.

Furthermore, since the longitudinal members are bent at the attachment positions, the bent portions of the chord members where the load is concentrated are reinforced by the longitudinal members, increasing the strength of the entire truss unit.

[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 main frame, and Figs. 4 and 5 are side views and inside views of the outer truss that constitutes the main frame. Side views of the truss, FIGS. 6 to 9 show one embodiment of the present invention, FIG. 6 is a partial side view of the outer truss in the truss unit, and FIG. 7 is a partial side view of the inner truss, FIG. FIG. 8 is a plan view thereof, and FIG. 9 is a cross-sectional view of a curved escalator using the above-mentioned main frame. 40...Truss, 40a, 40b, 40c...40
n...Truss unit, 41...Top chord member, 42...Lower chord member, 43...Vertical member, 45...Horizontal member.

Claims (1)

[Claims] 1. In the main frame of a curved escalator, which consists of a large number of truss units connected in series in the circumferential direction to form a truss that forms an arcuate polygon in the horizontal projection plane, the above truss units are connected to multiple truss units outside the main frame. The upper and lower chord members, the plurality of upper and lower chord members inside the main frame, the outer and inner vertical members of the main frame provided in the vertical direction between each upper and lower chord members, and the outer longitudinal members. and a cross member to which a rail is attached horizontally between the inner longitudinal members, and each of the above chord members is bent into a polygonal shape according to the curvature in the horizontal projection plane of the above truss at the attachment position to each of the above longitudinal members. The main frame of a curved escalator.