JPS60218284A - Frame for escalator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

[Field of Application of the Invention] The present invention relates to a structural improvement of an escalator frame.

[Background of the invention]

An escalator frame is generally constructed by having both ends spanned between support beams provided at intervals in a building or the like. The entire white part of the escalator (1) carries the weight and live load. Hereinafter, the structure of a conventional escalator frame will be explained with reference to FIGS. 1 to 5. A general escalator frame has a truss structure as shown in FIGS. 1 and 2, and is manufactured by appropriately welding and assembling angle-shaped steel and groove-shaped steel. Figure 2 shows the A-A of the track-containing structural frame shown in Figure 1.
'It is a cross-sectional view (cross-sectional view). The truss structure type frame has an upper main string member 1 and a lower main string member 2 arranged approximately in parallel, and a vertical column 3 and a diagonal column 4 so as to span between the main string members 1 and 2.
, and their overlapping parts are joined by fillet welding or bolt connection to form two side frames, which are lined up, and the side frames 8 are connected to each other by the middle crossbeam 6 and the bottom crossbeam 7. . Such a frame with a truss structure is cut into appropriate frame lengths for convenience of manufacture and transportation, and these pieces are connected at joints 5 to form the entire frame. In a typical escalator frame, this joint portion 5 is often provided on an inclined frame that constitutes an intermediate frame. However, (2) also, the joint portions 5 are configured to connect the upper main string member 1 and the lower main string member 2, respectively. Third
FIG. 4 is another example of a conventional escalator frame. This escalator frame has side frame 8
The device is characterized in that a single strip plate 9 is bent to form an upper lip 10 and a lower lip 11, and the side frame 8 is provided with vertical columns 3 and diagonal columns as reinforcement materials. Pillar 4 is attached. As shown in FIG. 4, the joint part 5 of this escalator frame has a joint plate 12 with a U-shaped cross section on one side of the web part of the strip plate 9, and a batten 1 on the other side.
3 and tighten the bolts 14 so as to sandwich the web. As can be seen from the figure, the one-lath structural frame shown in FIG. 1 requires a long time to manufacture because it has many parts and each member must be welded. In addition, since the groove-shaped steel frame or steel plate frame shown in Fig. 3 is connected at the cross section of the side frame, joints between the upper frame and the intermediate frame, and between the lower frame and the intermediate frame (3) are required for each side frame. Machining groove-shaped steel frames or steel plate frames is difficult because the cross sections must be the same. FIG. 5 illustrates the dimensions and shape when a joint portion is provided at the bending point of the escalator frame. The upper frame 15 and the slope frame 16 are combined to form the upper part of the escalator frame. Here, the depth of the horizontal frame HP, the length of the joint part r, P,
Let the inclination of the joint be α2, and similarly that of the inclined frame be H.
5, L5. If α5 is set, then it becomes. Also horizontal frame 1
5 and the inclined frame 16, the coupling angle β formed by these frames is β=αρ+α5. Therefore, the upper frame 15 and the slope frame 1
The joint angle β formed by the frames 15 and 16 is the angle α2 of the joint portion of both frames 15 and 16. Depends on α5. On the other hand, in order to ensure the connection at the joint part, it is necessary to butt the upper (4) main string members and the lower main string members together, and for this purpose, the length of the joint part LP and L
5 must be equal. In general escalator frames, the depth HP of the first part frame 15 and the depth IT5 of the inclined part frame 16 are often different. In order to make the joint lengths LP and L5 equal and to achieve the coupling angle β, the joint angle α2. α5 must be machined with high precision. Furthermore, the escalator frame is a long structure, and it bends significantly due to the frame's own weight. In order for the horizontal frames at both ends of the frame to maintain a horizontal state even if the frame is bent, the angle α of the joint part must be set in consideration of the amount of frame bending. α5 must be set. Furthermore, the escalator frame length varies depending on the building in which the escalator is installed, and therefore the deflection plane of the escalator frame also varies depending on the frame length, so the joint angle α2. α5
Each escalator must be corrected accordingly. As mentioned above, escalator frame joint (5) hand angle α2. α5 must be processed accurately, and these angles are constant values determined by the escalator coupling angle β and the escalator frame depths HP and H, and it is necessary to correct the amount of frame deflection. Therefore, machining the frame joints is difficult. [Object of the Invention] An object of the present invention is to improve the productivity of members constituting an escalator frame and to provide a frame with high assembly accuracy. [Summary of the Invention] The present invention aims to reduce the number of processing steps for frame joints and improve assembly accuracy of the joints when the frame has to be divided for manufacturing and transportation reasons. The member is used as part of a joint. Moreover, even if the depth and length of the escalator frame change, the frame joining angle can be realized with high precision. [Embodiments of the Invention] (6) Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIGS. 6 and 7 show an embodiment of the escalator frame of the present invention. The escalator frame is composed of a slope frame 17, a two-part frame 18 and a lower frame 19, each of which has a joint part 20.21.
are connected to each other to form an integrated frame. 7th
The figure shows a two-part structure of the escalator frame shown in FIG. The inclined part frame 17 is constructed by arranging the upper main string member 1 and the lower main string member 2 approximately in parallel, and attaching the joint pillar 3 and the diagonal pillar 4 so as to span between the main string members 1 and 2. A frame 8 is formed. Similarly, the upper main string member l
, a lower main string member 2, and appropriate vertical columns and diagonal columns. In addition, the connection between the slope part frame 17 and the upper frame 18 is such that the slope part frame 17 is extended to the upper part of the upper frame 18, and the lower main chord member 2 of the slope part frame 17 is connected to the lower main string member 2 of the slope part frame 17.
The main chord members 1 and 2 of the frame 18 are connected to the vertical columns 3 and the diagonal columns 4 by bolts. The joining angle β between the inclined frame 17 and the upper frame 18 is determined by the angle that the joint 20 of the upper frame 18 forms with the upper frame 18, and is independent of the joint of the inclined frame 7. Similarly, the coupling angle β between the inclined frame 17 and the lower frame 19 is determined by the angle that the joint portion 21 of the lower frame 19 forms with the lower frame 19. That is, in the escalator frame of the present invention, the joining angle β of the escalator frame is uniquely determined by the angle of the joint portions 20 and 21 of the upper frame 18 and the lower frame 19, and is determined by other factors such as the frame depth Hp.
, HsThe length of the joint portion LPtLs is irrelevant. Therefore, in the escalator frame of the present invention, processing of the joint portion is easy, and the structure of the processed portion has good precision and precision of the joining angle. As shown in FIG. 7, the structure of the joint is that a joint plate 22 is attached to the main chord member of the upper frame 18 and the end of the vertical column, and bolts are attached to the joint plate 22 and the lower main chord member 2 of the inclined frame 17. A hole is provided, and a bolt 23 is passed through and tightened to connect these (8). Note that if the three joint plates 22 shown in FIG. 7 are made of a single angle steel or groove steel, the angle of the joint portion can be easily set. FIG. 8 shows another embodiment of the escalator frame of the present invention, and explains the structure of the upper part of the escalator frame. The escalator requires terminal gears 24 at both ends of the frame to drive the treads on which passengers are boarded. Therefore, the bearing 2 of the terminal gear 24 is placed on the lower main string member 2 of the inclined part frame 17.
5 will be provided. In this way, all of the guide rails 26 of the tread can be installed within the slope frame 17. By accommodating the guide rail 26 within the slope frame 17, the assembly accuracy of the rail is improved by -12, deformation is less likely to occur during transportation and installation, and the dimensional accuracy of the rail after installation can be improved. We can provide escalators with a comfortable ride. Although this embodiment shows the case where the bearing 25 is attached to the upper part of the frame, it is also possible to attach the bearing 25 to the lower part (9) of the frame. FIG. 9 shows another embodiment of the escalator frame of the present invention. The tip of the upper frame 18 is extended to the extension line of the upper main string member 27 of the slope part frame 17, and a joint part 30 is provided at the part where the lower main string member 29 of the upper frame 18 and the slope part frame 17 intersect.
0 connects the upper frame 18 and the slope frame 17. Similarly, the tip of the lower frame 19 is connected to the inclined frame 17.
A joint part 32 is provided at the intersection of the upper main string member 31 of the lower frame 19 and the slope part flume 17, and the joint part 32 connects the lower frame 19 and the slope part frame 17. Link. In this way, the length of the inclined part frame 17 can be made shorter than in the case shown in FIG. 6, and the transport and assembly of the inclined part frame 17 can be facilitated. Further, in the frame of the present invention, the upper frame 18 and the lower frame 19 can be easily connected as shown in FIG. What (10) shown in FIG. 10 shows the case where the frames of FIG. 9 are connected. It is used only to connect the frame 18 and the lower frame 19, and can be formed completely independently of what connects the entire frame. In this way, since the frame 18 and the lower frame 19 connected together have approximately the same length as the slope frame 17, it is easier to handle them when they are connected when transporting. 11 and 12 show another embodiment of the escalator frame of the present invention. FIG. 11 shows a cross section taken along line AA' in FIG. Recently, for the purpose of reducing manufacturing costs and improving processing accuracy of escalator frames, attempts have been made to construct a frame by attaching the lower main chord members 35 and 36 and the vertical columns 37 to a flat plate 38. The flat plate 38 of the present gnome is often provided with a protrusion 39 in order to suppress out-of-plane deformation of the flat plate and improve strength. The protrusion 39 formed on the flat plate 38'2
1) Multiple pieces are installed in parallel in the longitudinal direction of one arm. The slope frame 40 in FIG. 12 is a flat plate structure having the cross section shown in FIG. 11, and an upper frame 41 and a lower frame 42 are attached to both ends of the slope frame 40 to constitute the entire escalator frame. Since the flat plate 38 provided with the projections 39 has the same cross-sectional shape in the longitudinal direction, it can be easily and efficiently processed by roll forming. On the other hand, the upper frame 41 and the lower frame 42 are
Since the length is short and the force applied to the frame is relatively small, there is no need to provide any protrusions. In addition, in the escalator frame of the present invention, the length of the slope frame 17 is longer than that of the conventional escalator frame (for example, the case shown in FIG. 1), which causes problems when transporting the frame from the factory to the installation site. It may happen. In that case, even if the slope frame is divided into appropriate lengths, application of the present invention is effective in order to accurately and easily process the connection between the horizontal frame and the slope frame. be. (12) [Effects of the Invention] According to the present invention, the coupling angle β of the escalator fly 11
is determined by only one inclination angle provided at one end of the lower frame and one part of the frame at the inclined part gnome or -, which not only facilitates the processing of the joint part but also improves the accuracy of the joining angle of the joint part. "Go" - can. Furthermore, when the frame length or frame depth of an escalator changes, it is difficult to change the joint part with conventional escalator joint types, but this can be easily done with the joint formation of the present invention. In addition, with escalators, both ends of the frame must be kept horizontal, but with the frame of the present invention, the joining angle can be easily adjusted.
Horizontal parts can be processed with high precision.

[Brief explanation of drawings]

Figures 1 to 4 are diagrams explaining the structure of the escalator frame of the prior art, Figure 5 is a diagram explaining the connection angle of the joint part, and Figures 6 to 9 are the structure of the escalator frame of the present invention. FIG. 10 is a diagram explaining the state of the frame during transportation, and FIGS. 11 and 12 are diagrams (13) showing another embodiment of the present invention. 1..." two-part main string member, 2... lower main string member, 15
... Upper frame, 16 ... Inclined part frame, 17
... Inclined part frame, 18 ... Upper frame, 19
...Lower flap (14) Fig. 1 Fig. 2 Fig. 3 Fig. 2 1:1”lc: Fig. 4 Fig. 5 Fig. C Fig. 7 Fig. 9 Fig. 8 Fig. 9 Fig. 18 Fig. 10 Fig. 11 5 Figure 1z 0

Claims (1)

[Claims] 1. In a frame such as an escalator in which two or more divided truss members are connected at a connecting part to form a flume, the frame has a horizontal part frame at both ends and an inclined part frame in the middle, and this inclined part An escalator frame characterized in that one or both ends of the frame extend to the upper end or lower end of the horizontal frame, and the horizontal frame and the inclined frame are connected at the overlapping part of the horizontal frame and the inclined frame.