JPS6411555B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of assembling a main frame of a curved escalator having a conveyance path forming an arc having a constant curvature in a horizontal projection plane.

[Conventional technology]

The circular curved escalator is provided with a main frame that forms a circular arc with a constant 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.

If the above-mentioned chord members are connected only at the intersections with the horizontal and inclined parts of the truss, it will be inconvenient to install the vertical members, and as a result, it will be difficult to install the horizontal members that are suspended horizontally on the vertical members. There were drawbacks such as the need for a great deal of labor to center the rails on the cross members. In order to solve these difficulties, a truss as shown in FIGS. 4 and 5 has been proposed.

That is, FIG. 4 is a side view of the outer truss in a truss constructed by connecting truss units;
FIG. 5 is also a side view of the inner truss.
In these figures, A ₁ , A ₂ , D ₁ , D ₂ and B ₁ ,
A truss 40 is constructed by connecting B ₂ , E ₁ , and E ₂ facing each other and forming a cube as one unit to A _o , D _{o ,} and B _o and E _o .

Truss unit 40a, 40b, 40c...40
n is the upper chord member 41, the lower chord member 42, and the vertical member 4 provided vertically between the upper and lower chord members 41 and 42.
3, and diagonal members 44 extending across the quadrilateral formed by these upper and lower chord members 41, 42 and vertical members 43.
and has.

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. Of course, the number of folding stages is not limited to two, and can be determined by taking various factors into consideration.

[Problem to be solved by the invention]

However, no special consideration was given to the connection surfaces at both ends that connect adjacent truss units, and there were issues with setting reference surfaces when manufacturing each unit, connection accuracy when connecting each unit, etc. .

The present invention has been made based on the above-mentioned circumstances, and it is possible to manufacture each unit based on the connection surfaces at both circumferential ends of the truss unit, to facilitate assembly of the main frame, and to improve the connection accuracy of each unit. The purpose of this invention is to provide a method for assembling the main frame of a curved escalator.

[Means to solve the problem]

The method for assembling the main frame of an escalator according to the present invention connects a large number of truss units in series in the circumferential direction to form a truss that forms an arcuate polygon in a horizontal projection plane, and the truss unit includes an upper chord member and The lower chord material is provided outside the main frame, the upper chord material and the lower chord material are provided inside the main frame, and the vertical members provided in the vertical direction between each upper chord material and the lower chord material are arranged on the outside and inside of the main frame, respectively. , the horizontal member to which the rail is attached is horizontally suspended between the outer longitudinal member and the inner longitudinal member, and each connection surface of the circumferential side both end connection parts of the truss unit for connecting with the adjacent truss unit is configured. , formed by matching each plane obtained by cutting in the vertical direction with a line toward the center of curvature on the horizontal projection plane of the curved escalator,
Thereafter, the connection surfaces of the adjacent truss units are joined together.

[Effect]

In the present invention, the connecting surfaces at both ends of the large number of truss units constituting the truss are formed to match the plane obtained by cutting the escalator in the vertical direction along a line pointing toward the center of curvature of the escalator. The connecting surfaces of adjacent truss units constituting the unit can be easily aligned and assembled.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. That is, as shown in FIGS. 6 to 8, for example, the truss unit 40a includes an upper chord member 41 and a lower chord member 42 that are outside the main frame, and an oblique member extending diagonally between the upper chord member 41 and the lower chord member 42. material 44, the upper chord material 41 and the lower chord material 42 that are inside the main frame, the vertical member 43 on the outside of the main frame that extends vertically between the upper chord material 41 and the lower chord material 42, and the upper chord material 41 and the lower vertical material. A vertical member 43 on the inside of the main frame that extends vertically between the members 42, and the vertical members 43, 43.
It is three-dimensionally assembled into a substantially rectangular cylindrical shape with a horizontal member 45 suspended between them and to which a rail is attached. In this case, as shown in FIG. 8, each truss unit has horizontal projections of the truss, for example, at the outside, inside, upper, and lower chord members 41 and 42 of the truss unit 40a at the attachment positions of the vertical members 43 to the chord members. It is bent into a polygon according to the curvature of the surface. This bending angle is a radius R ₁ from the center 0 ₁ to 0 ₅ shown in FIG.
The angle is such that each bent side of the chord material follows the arc drawn from R5 to _R5 . By bending the 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, a horizontal member 45 with a rail attached is horizontally suspended between the vertical members 43, 43, and this horizontal member 45 also automatically bends at the bending point b ₁ - _{b 1} , b ₂ - b ₂ , b ₃ ―
It is parallel to the lines l ₁ , l ₂ , and l ₃ that connect b ₃ .

Vertical members 43 are 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 attached to the centers ₀₁ to ₀₅ . It will be oriented toward one of the following. Therefore, the horizontal member 45 extending horizontally between the vertical members 43, 43 is also parallel to the line lm toward the centers ₀₁ to ₀₅ . Each of the vertical members 43 at both ends in the circumferential direction is provided with a connecting portion 60 at each end for connecting to an adjacent truss unit.
The connection surfaces of each connection portion 60 are formed to coincide with the same plane obtained by cutting in the vertical direction along the line lm directed toward the center of curvature of the curved escalator in the horizontal projection plane. In order to assemble the main frame of a curved escalator on-site (or in a factory) using truss units manufactured in a factory or the like in this manner, the connection surfaces of adjacent truss units must be joined together. That is, the above-mentioned both end connecting surfaces may be butted against the both end connecting surfaces of the mating truss unit, and the two may be fastened using fastening means such as bolts and nuts.

Therefore, in this embodiment, the truss unit itself is bent into a polygonal shape according to the curvature of the truss at the mounting position of the vertical members 43, as shown in FIG. Since the horizontal members 45 fixed to each vertical member 43 automatically face the center of curvature of the truss, the rails provided on the horizontal members 45 can be easily centered. has.

In this embodiment, there are four connecting surfaces of the both-end connecting portions 60 in the vertical plane, but the number is not particularly limited. Also, the truss unit 40
A itself may be bent into a polygonal shape as shown in the figure, or may be straight.

[Effects of the Invention] As described above, the present invention has two planes obtained by vertically cutting the connecting surfaces of the connecting portions at both ends of the truss unit in the circumferential direction along a line directed toward the center of curvature on the horizontal projection plane of the curved escalator. Since the connecting surfaces of adjacent truss units are connected to each other, the connecting surfaces are connected to each chord member, longitudinal member, cross member, etc. that make up the truss with a complex spiral structure. By aligning the reference plane with the center of curvature of the curved escalator when assembling the main frame of the curved escalator, the connection planes can be easily matched and the entire escalator Installation work can be facilitated.

Moreover, by setting the reference plane, the manufacturing of the truss unit is facilitated, and the connecting surfaces of adjacent truss units can be easily matched with each other, thereby improving the connection accuracy.

[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 views of the outer truss constituting the main frame. The side view of the inner truss, FIGS. 6 to 8 are diagrams for explaining one embodiment of the present invention, and FIG. 6 is a partial side view of the outer truss in the truss unit, and FIG. A partial side view of the inner truss, and FIG. 8 is also a plan view thereof. 40...Truss, 40a, 40b, 40c...40
n...Truss unit, 41...Top chord member, 42...Lower chord member, 43...Vertical member, 45...Horizontal member, 60...Both end connection portion.

Claims (1)

[Claims] 1 A large number of truss units are connected in series in the circumferential direction to form a truss that forms an arc-shaped polygon in the horizontal projection plane, and the upper and lower chord members on the outside of the main frame and the upper and lower chord members on the inside of the main frame are connected. , the outer and inner vertical members of the main frame are provided in the vertical direction between each upper chord member and the lower chord member, and the horizontal members to which the rails are attached are installed horizontally between the outer vertical member and the inner longitudinal member, and the above is achieved. A truss unit is constructed, and each connection surface for connecting to an adjacent truss unit at both ends in the circumferential direction of the truss unit is cut in the vertical direction along a line pointing toward the center of curvature in the horizontal projection plane of the curved escalator. A method for assembling a main frame of a curved escalator, characterized in that the main frame of a curved escalator is formed to match each of the obtained planes, and then the connecting surfaces of the adjacent truss units are joined together.