JP6566820B2 - Escalator step chain, escalator and escalator step chain assembly method - Google Patents

Description

  The present invention relates to an escalator step chain, an escalator, and a method for incorporating an escalator step chain.

  With conventional escalator chain packing equipment, in order to assemble a chain that is safe, has good workability, and does not impair quality, it is stretched horizontally by multiple pitches of the chain, folded, and stacked in order from bottom to top while meandering. ing. (For example, refer to Patent Document 1).

JP 2002-128440 A

  In such an escalator chain packing apparatus, the inner width dimension of the container main body that stores the chain is slightly larger than the chain width dimension, and the longitudinal dimension of the container main body is an integral multiple of the chain pitch + the roller diameter. . However, when pulling out the chain in the horizontal direction, depending on the relationship between the roller diameter and the chain pitch, the upper roller enters between the lower rollers, and the upper roller gets over the lower roller when pulling the roller in the horizontal direction. Therefore, great power is required. For this reason, there existed a problem which had to raise tensile force when pulling out, and a problem which had to fix equipment firmly in order to pull.

  In addition, by setting the container body longitudinal dimension to an integral multiple of the chain pitch + roller diameter, the upper and lower rollers of the container come into contact and stack depending on the relationship between the roller diameter, chain pitch, and chain width when storing the chain. There was also a problem that the chain interval of the door became wider and the loading efficiency deteriorated.

  The present invention has been made to solve the above-mentioned problems, and can reduce the equipment for pulling the chain without reducing the quality of the chain by reducing the load when pulling the escalator chain. The purpose is to provide.

  In order to achieve the above-described object, the step chain of the escalator of the present invention includes a plurality of rollers, a plurality of first link plates, and a plurality of second link plates, and a pair of the first link plates. Are arranged so as to bridge two corresponding rollers, and the pair of second link plates includes an end portion of the pair of first link plates and another pair of adjacent first links. It arrange | positions so that the edge part of a plate may be bridge | crosslinked, and both the said 1st link plate and the said 2nd link plate have a convex part between the hole parts which attach the said roller.

  ADVANTAGE OF THE INVENTION According to this invention, the equipment which pulls a chain can be reduced without impairing the quality of a chain by reducing the load at the time of pulling an escalator chain.

It is a figure which shows the escalator by Embodiment 1 of this invention. It is a figure which shows the step and chain of an escalator by Embodiment 1 of this invention. It is a figure which shows the step chain by Embodiment 1 of this invention. It is a figure which shows the step chain by Embodiment 1 of this invention. It is a figure which shows the step chain unit by Embodiment 1 of this invention. It is a figure which shows the step chain laminated carriage by Embodiment 1 of this invention. It is a figure which shows the step chain insertion state by Embodiment 1 of this invention. It is a figure which shows the movement state of the step chain by Embodiment 1 of this invention. It is a figure which shows the movement state of the step chain by Embodiment 1 of this invention, and is a figure which shows the state after FIG. It is a figure which shows the movement state of the step chain by Embodiment 1 of this invention, and is a figure which shows the state after FIG. It is a figure which shows the link plate by Embodiment 2 of this invention. It is a figure which shows the processing state of the link plate by Embodiment 3 of this invention. It is a figure which shows the step chain and sprocket by Embodiment 4 of this invention. It is sectional drawing by the HH line in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

Embodiment 1 FIG.
FIG. 1 is a side view showing an overall configuration of an escalator according to Embodiment 1 of the present invention, and FIG. 2 is a perspective view schematically showing steps of the escalator, forward rails, chains, and the like. 3 and 4 are diagrams showing the shape of the step chain.

  Components of the escalator are attached to the truss 1 that is the frame of the escalator. Step 2 is connected to the step chain 5 and drives the step by rotating the step chain. On both the left and right sides of step 2, panels 3 stand up. The escalator is provided with a pair of left and right handrails 4 that are driven to rotate. Each of the handrails 4 has a route that travels along the upper portion of the corresponding panel 3 as a part of the circuit route.

  This step chain includes a plurality of rollers 8, a plurality of first link plates 9, a plurality of second link plates 10, a plurality of bushes 11, and a plurality of pins 12. Corresponding rollers 8 are rotatably sandwiched between the end portions of the pair of first link plates 9 that are positioned relatively inside in relation to the second link plate 10. Further, the corresponding end portions of the pair of first link plates 9 and the corresponding rollers 8 are sandwiched between the end portions of the pair of second link plates 10. That is, the pair of first link plates 9 are arranged so as to bridge the corresponding two rollers 8, and the pair of second link plates 10 are separated from the end portions of the pair of first link plates 9. Are arranged so as to bridge the end portions of the pair of first link plates 9 adjacent to each other. The roller 8 is supported so as to be rotatable about the axis of the pin 12, and the first link plate 9 and the second link plate 10 are also rotatable relative to each other about the axis of the pin 12. It is connected. Thereby, a continuous chain is constituted. Further, from another viewpoint, the first link plate 9 is disposed outside the roller 8 with respect to the direction in which the center of rotation of the roller or the like extends perpendicular to the longitudinal direction of the chain (traveling direction during driving). A second link plate 10 is disposed further outside the one link plate 9.

  The relatively plurality of first link plates 9 on the inner side and the plurality of second link plates 10 on the relatively outer side both have a wave having a convex portion 13 in the plate width direction between the hole portions to which the rollers are attached. It has a mold shape. In addition, although the convex part of the board width direction is made into the trapezoid shape where each side is a straight line in FIG.3 and FIG.4, it has the same effect also in curvilinear form.

  Holes are provided in both end faces of the shaft for attaching the escalator step, that is, both end faces of the step shaft 14, and a step chain pin is inserted and fixed in the hole in the both ends in the longitudinal direction. By connecting, it becomes the rope ladder-like step chain unit shown in FIG.

  The convex portions are assembled in the same direction and folded and stacked so that the roller center distance between the first layer and the second layer is different from the roller center distance between the second layer and the third layer. The Then, by comparing the top and bottom of the stack and pulling out from the wider roller center distance, the second layer connected to the first layer is also pulled out, and after the first layer is pulled out, the same positional relationship as the first layer The third layer is drawn out.

  FIG. 6 shows a state in which the step chain unit is stacked on a flat carriage, and FIG. 7 shows a state in which the chain is inserted from the lower end of the escalator. When inserting a chain into the escalator, for example, a rope ladder-like step chain unit is placed on the carriage 15, a wire is drawn from a winch attached to the upper end of the escalator, and the chain leading to the lower chain is stacked. A wire is attached to the wire, and the chain is pulled by rotating the winch, and the chain is inserted into the escalator. Here, the stacked upper and lower chains are pulled out from the direction in which the convex portion of the link plate faces downward, that is, from the side where the distance between the upper layer roller and the lower layer roller is wide.

8 to 10 show a part when the chain is pulled out in the horizontal direction. According to this structure, as shown in FIG. 8, when the convex portion of the upper link plate faces the lower, the upper row La center and, in the vertical direction of the center of the lower row La As for the distance (only referred to as “roller center distance”) as viewed only in the positional relationship, the dimension A shown in FIG. 8 is wider than the dimension B, and the dimension A is pulled out in the horizontal direction in the direction of the arrow. As a result, as shown in FIG. 9, the upper and lower rollers come into contact with each other while maintaining a wide pitch in the vertical direction, and the upper chain roller is moved downward as shown in FIG. Get on the roller and move. Thus, by pulling out from the wider roller center interval, the height over the lower roller is shortened, so the force to push up the roller is reduced and the pulling force can be lowered. Also, since the lower chain is connected to the upper chain, pulling out one row of the upper chain will also pull out the lower chain in the same way. Returning to the state of 8, the chain is always pulled out from the wider side of the center distance between the upper and lower rollers. In addition, since the upper and lower link plates are attached to the inner and outer sides, respectively, when the upper and lower layers are both inside or when both the upper and lower layers are outside, the upper link plate is placed on the lower link plate. Therefore, when the upper chain is pulled out, it is guided by the inclined portion 17 of the link plate and lifts in an oblique direction. Can be lowered.

  Therefore, the pulling force is efficiently converted into a force that lifts the roller, and the pulling force can be lowered, reducing the load on the roller, reducing the scratches and scraping of the roller, and allowing the chain to be inserted without losing quality. . Furthermore, since the pull-out force can be reduced, the output of the winch can be reduced, and it is not necessary to firmly fix the carriage that receives the reaction force of the pull-out force, so that the capital investment can be suppressed.

  In this way, when pulling out the chain unit from the cart with the link plates having convex portions stacked, the pulling force can be suppressed by pulling out from the narrower center of the stacked upper and lower areas, and the roller quality The chain can be inserted without damage.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described. The second embodiment is the same as the first embodiment described above except for the parts described below.

  As described above, by providing the link plate with a convex portion, the convex chain is spring-loaded during a sudden stop when the safety device is operated due to a foreign object biting or the like while the chain is installed in the escalator and operated. It is possible to relieve sudden stops, increase passenger safety, and suppress damage to equipment.

  For example, as shown in FIG. 11, the chain pitch C = 140 mm, the chain width D = 30 mm, the chain plate thickness (dimension in the front and back direction in FIG. 11), the height E of the convex portion from the roller center of the chain E = 10 mm, If the horizontal length of the convex part (length in the longitudinal direction or length in the traveling direction) is F = 50 mm and a force of 2000 kgf is applied during a sudden stop, for example, the chain unit has two link plates on the left and right sides. Therefore, a force of 500 kgf is applied per link plate. FIG. 11 shows a deformation when a tensile force is applied to a set of plates and chains. The broken line in FIG. 11 shows the shape before applying a tensile force. When the tensile force is applied, the link plate elongation G is about 0.05 mm, and there are 30 steps on the forward path side of the escalator, that is, when there are 90 plates × 4 rows of link plates on the forward path side, Since a force of 500 kgf is applied to the link plate, the 1.5 mm chain is extended as a whole, so that the distance to the stop can be extended and the impact load applied to passengers and equipment can be suppressed. It has the effect of extending about twice as much as a linear link plate.

Embodiment 3 FIG.
Next, a third embodiment of the present invention will be described. The third embodiment is the same as the first embodiment described above except for the parts described below. As can be seen from the above description and the corresponding drawings, the link plate is formed in a shape having a convex portion, and in terms of yield compared to the case of cutting out from a belt-like plate like a general link plate. Although it is disadvantageous, it may be cut out from a flat plate (steel plate) with a laser processing machine (LZ processing machine) or the like. FIG. 12 shows a view when a plate is cut out from the flat plate (steel plate) 17. According to such a structure, the fall of the yield at the time of manufacturing the link plate which has a convex part can be suppressed. In addition, the strength of ordinary link plates is increased by quenching, etc., but since the material is cut by LZ processing, materials with high rigidity such as high-strength steel plates can be cut out, and processing by eliminating the need for quenching It is possible to reduce costs, improve product accuracy by suppressing distortion during quenching, and reduce rework such as distortion correction.

Embodiment 4 FIG.
Next, a fourth embodiment of the present invention will be described. The fourth embodiment is the same as any one of the first to third embodiments described above except for the parts described below. FIG. 13 is a view showing a step chain and a sprocket according to Embodiment 4 of the present invention, and FIG. 14 is a cross-sectional view taken along line HH in FIG. The fourth embodiment proposes an escalator including the above-described step chain. In the fourth embodiment, a step chain is attached to the escalator sprocket 18 as shown in FIGS. That is, the step chain is combined with the sprocket so that the convex portion of the link plate is located on the radially outer side of the sprocket, in other words, the convex portion of the link plate faces the radially outer side of the sprocket. According to such a configuration, as shown in FIGS. 13 and 14, the portion where the sprocket and the chain are engaged is provided with the relief 19 in order to avoid interference between the sprocket and the chain as in the HH cross section. Since the convex part of the chain is on the outside of the sprocket, the allowance between the chain link plate and the sprocket is reduced. As a result, the machining allowance of the sprocket can be reduced, and the processing cost of the sprocket can be reduced.

  Although the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical idea and teachings of the present invention. It is self-explanatory.

  The invention of the present application includes a combination of part or all of the configurations of any one or more of the embodiments described above with the other embodiments.

  5 Step chain, 8 roller, 9 1st link plate, 10 2nd link plate, 13 convex part, 18 sprocket.

Claims (5)

A plurality of rollers, a plurality of first link plates, and a plurality of second link plates;
The pair of first link plates are arranged so as to bridge the two corresponding rollers, and the pair of second link plates are adjacent to the ends of the pair of first link plates and another adjacent one. Arranged to bridge the ends of a pair of matching first link plates;
Each of the first link plate and the second link plate has a convex portion in the plate width direction in which each side is formed in a straight trapezoidal shape between the holes for attaching the roller.
Escalator step chain. An escalator comprising a step chain and a sprocket for driving the step chain,
The step chain is an escalator step chain according to claim 1,
The step chain is combined with the sprocket such that the convex portion faces radially outward of the sprocket.
Escalator. A plurality of rollers, a plurality of first link plates, and a plurality of second link plates are provided, and the pair of first link plates are arranged so as to bridge two corresponding rollers, The second link plate is disposed so as to bridge an end portion of the pair of first link plates and an end portion of another adjacent pair of the first link plates. Both the link plate 1 and the second link plate have convex portions between the holes for attaching the rollers, and the step chain of the escalator is folded and laminated.
From wider the row La center distance between the upper and lower layers, pulling the step chain,
Inserting the step chain into the escalator;
How to incorporate an escalator step chain. The convex portion is formed by a laser processing machine,
The method of incorporating the step chain of the escalator according to claim 3. The link plate is cut from a high-tensile steel plate by a laser processing machine.
The method of incorporating the step chain of the escalator according to claim 4.

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