JP2014213957A - Escalator footstep - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an escalator footstep in which the fact that footsteps are fixed in a step shaft and is not loosened can be easily confirmed from an upper surface of a footboard.SOLUTION: An escalator footstep is configured such that footsteps are fixed to a step shaft 4 by inserting a clamping jig 15 through a through-hole 8 from an upper surface of a footboard 5 and rotating a clamping bolt 14 in a clamping direction. The escalator footstep includes: a transparent confirmation window 16 provided on an upper surface of the footboard; a guide tube 17 provided at a lower surface of the confirmation window and with the other end opened; a rod-shaped body 19 with a portion inserted in the guide tube and a remainder exposed outside the guide tube, and constituted of a seal-filled bag having flexibility and the elasticity; a plurality of spherical display bodies 20 inserted in the guide tube; and a pressing tool 22 for crushing an exposed part of the rod-shaped body by sandwiching it between a horizontal projection of a fixing/holding part and itself. When the pressing tool crushes the exposed part of the rod-shaped body in the mounting of the footstep, a portion of the rod-shaped member in the guide tube is extended and presses the spherical display body against the inner face of the transparent confirmation window.

Description

  The present invention relates to a step of an escalator.

  Conventionally, in the escalator step, in order to confirm that the step is fixed to the step shaft and no looseness occurs, the operator enters the machine room and directly confirms the fixed state of the step visually. Therefore, it took a long time to work (see, for example, Patent Document 1).

  For example, a general configuration of a conventional escalator step will be described with reference to FIGS. In the figure, reference numeral 1 denotes an escalator machine room, where an operator enters during maintenance work. 2 is a step on which the user gets on, 3 is a step chain, 4 is a step shaft fixed to the step chain 3 and engages with the step 2, 5 is a step plate constituting the step 2, and 6 is a step board on which the user rides. The follow-up roller is composed of 7, a bracket constituting the step 2, 8 is a through hole provided so as to penetrate from the upper surface to the lower surface of the tread plate 5, and 9 is fixed to the bracket 7, and straddles the upper surface of the step shaft 4. C-shaped fixed holding part having a curved part to be joined, 10 is an insertion hole provided in a horizontal projecting part 9a at one end of the fixed holding part 9, 11 is a movable part shaft attached to the bracket 7, and 12 is a movable part. A J-shaped movable holding portion that is provided so as to be rotatable by the shaft 11 and has a curved portion that engages with the lower surface of the step shaft 4, and 13 is a screw hole provided in the horizontal projecting portion 12 a at one end of the movable holding portion 12. 14 through the insertion hole 10 of the fixed holding part 9 A fastening bolt 15 that engages with the screw hole 13 of the movable holding portion 12 and is fixed to the step shaft 4 by the fixed holding portion 9 and the movable holding portion 12 is fastened to the fastening bolt 14 from the upper surface of the tread plate 5 through the through hole 8. It is a tightening jig.

  When attaching the step 2 removed in the inspection work or the like, as shown in FIG. 11, the C-shaped curved portion of the opposite fixed holding portion 9 is positioned on the upper surface of the step shaft 4, and the step 2 is pushed down, The other end portion of the J-shaped movable holding portion 12 located on the upper surface of the step shaft 4 hits the upper surface of the step shaft 4, and the movable holding portion 12 facing the lower surface of the step shaft 4 is shown in FIG. It rotates in the direction of C, and the step shaft 4 is sandwiched between the fixed holding portion 9 and the movable holding portion 12 to obtain the state shown in FIG. Next, the operator inserts the tightening jig 15 from the upper surface of the tread plate 5 through the through hole 8, rotates the tightening bolt 14 in the tightening direction, and the screw hole of the tightening bolt 14 and the screw hole of the movable holding portion 12. By engaging 13, the step 2 is fixed to the step shaft 4. In order to confirm that the tightening bolts 14 are completely tightened, an operator enters the machine room 1, and the horizontal protrusion 9 a at one end of the fixed holding portion 9 and the horizontal protrusion at one end of the movable holding portion 12. It was necessary to visually confirm that the portion 12a was in close contact with the fastening bolt 14.

JP 2002-68654 A

  With conventional escalator steps, when a step is installed, the operator performs the final confirmation by entering the machine room, so it takes time to move to the machine room by a predetermined method after the step is installed. There is also a possibility that the steps installed to the room and the other steps are mistakenly confirmed in the machine room when moving the steps to the room.

  The present invention has been made to solve the above-described problems. An escalator step that can be easily confirmed from the upper surface of the step board that the step is fixed to the step shaft and no looseness has occurred. It is to provide.

  In the step of the escalator according to the present invention, a step is formed, a step plate provided with a through-hole penetrating from the upper surface to the lower surface, a bracket provided on the lower surface of the step plate, constituting the step, and fixed to the bracket, A fixed holding portion having a curved portion that engages across the upper surface of the step shaft with which it engages, an insertion hole provided in a horizontal protrusion at one end of the fixed holding portion, and a bracket that can be rotated via a movable shaft A movable holding portion having a curved portion that engages with the lower surface of the step shaft, a screw hole provided in a horizontal protrusion at one end of the movable holding portion, and a screw of the movable holding portion through an insertion hole of the fixed holding portion. A fastening bolt that engages with the hole, and that fixes the step to the step shaft by the fixed holding part and the movable holding part, is inserted through the through hole from the upper surface of the tread plate when the step is attached for inspection work, Tighten the tightening bolt In the case where the step is fixed to the step shaft by rotating in the direction, a transparent confirmation window is provided on the top surface of the tread plate so that the tightening state of the tightening bolt can be confirmed from above the tread plate, and a bottom surface of the confirmation window. The guide cylinder is provided, the other end is opened and located near the head of the tightening bolt, and a part of the guide cylinder is inserted into the cylindrical portion of the guide cylinder, and the remaining part is exposed to the outside of the guide cylinder. A rod-shaped body configured in a filled bag sealed with a flexible and stretchable material, and inserted into the cylindrical portion of the guide cylinder so as to be positioned at the tip of the rod-shaped body, and normally visible from a transparent confirmation window A plurality of spherical display bodies located between the head of the tightening bolt and the horizontal protruding part of the fixed holding part, and the exposed part of the rod-shaped body between the horizontal protruding part of the fixed holding part. It has a pressing tool that crushes when pinched, and tightens the tightening bolt. At the time of mounting the step that is rotated to the position, the pressing tool sandwiches the exposed portion of the rod-shaped body between the horizontal protruding portion of the fixed holding portion and crushes it, so that a part of the rod-shaped body in the cylindrical portion of the guide cylinder extends. The spherical display body is pressed against the inner surface of the transparent confirmation window.

  Moreover, the cylindrical end surface located in the part which contact | connects the transparent confirmation window and the upper surface of the tread of a guide cylinder is made into an integral structure.

  The spherical display body is composed of a filled bag sealed with a colored flexible and stretchable material.

  In addition, a gas or liquid filler is injected into the rod-shaped filling bag and the spherical display filling bag.

  According to the present invention, there is no need for the operator to move to the machine room to confirm that the step is fixed to the step shaft, and it is possible to confirm at the position where the step is attached. is there.

It is sectional drawing which shows the structure of the step of the escalator in Example 1 of this invention. It is sectional drawing along the arrow AA line of FIG. It is the top view seen from the arrow B direction of FIG. It is operation | movement explanatory drawing which shows the principal part of the step of the escalator in Example 1 of this invention. It is a perspective view which expands and shows the principal part of the step of the escalator in Example 1 of this invention. It is explanatory drawing which shows the initial stage operation | movement before reaching FIG. 1 of the step of the escalator in Example 1 of this invention. It is explanatory drawing which shows the intermediate operation before reaching FIG. 1 of the step of the escalator in Example 1 of this invention. It is explanatory drawing which shows the fastening operation | movement before reaching FIG. 1 of the step of the escalator in Example 1 of this invention. It is a side view which shows the whole structure of the conventional escalator. It is a side view which shows the structure of the step of the conventional escalator. It is a side view before the operation | movement start of the step of the conventional escalator. It is a side view after operation | movement of the step of the conventional escalator.

Example 1.
1 is a cross-sectional view showing the structure of a step of an escalator in Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is viewed from the direction B in FIG. FIG. 4 is an operation explanatory view showing the main part of the step of the escalator, FIG. 5 is an enlarged perspective view showing the main part of the step of the escalator, and FIG. 6 is an explanatory view showing the initial operation before reaching FIG. 7 is an explanatory view showing an intermediate operation before reaching FIG. 1, and FIG. 8 is an explanatory view showing a tightening operation before reaching FIG.

  In the figure, reference numerals 1 to 15 are the same as those of a general configuration of a conventional escalator step, and thus the description thereof is omitted. Reference numeral 16 denotes a confirmation window made of a transparent hard resin provided on the upper surface of the tread 5, and is used for confirming the tightening state of the tightening bolt 14 directly from above the tread 5. Reference numeral 17 denotes a cylindrical guide cylinder made of a hard resin, in which a cylindrical end face located at a portion in contact with the upper surface of the tread plate 5 is integrated with the transparent confirmation window 16, and the other end of the cylindrical form is in an open state. And located near the head of the tightening bolt 14. Although the transparent confirmation window 16 and the cylindrical end surface of the guide cylinder 17 are integrally configured, they may be configured separately instead of being integrated. Reference numeral 18 denotes an air hole penetrating the transparent confirmation window 16 for releasing or sucking air inside the guide cylinder 17 to the outside, and 19 is a part of the guide cylinder 17 from the open end side of the other end of the guide cylinder 17 into the cylindrical portion. Is inserted into the guide cylinder 17 and the other end of the guide tube 17 is exposed to the outside of the open end. The horizontally long stick-shaped body is a flexible and stretchable material with a bright color on its surface, such as rubber. It is comprised from the horizontal oblong filling bag 19a sealed. Reference numeral 20 denotes a plurality of spherical display bodies filled and inserted into the cylindrical portion of the guide cylinder 17, and each spherical display body 20 is a flexible and stretchable material having a bright color on the surface, for example, a rubber seal. It is comprised from the spherical filling bag 20a made. The spherical display body 20 located at the upper end (tip) in the cylindrical portion of the guide cylinder 17 is usually located at a position slightly away from the transparent confirmation window 16 and is not visible from the transparent confirmation window 16 (FIG. 4 ( a), see FIG. 6 and FIG. 7), when the outer exposed portion of the filling bag 19a of the horizontally long bar-like body 19 is crushed and pressure P is applied, and a plurality of spherical display bodies 20 are pushed in conjunction therewith. Since it moves to a position where it contacts the transparent confirmation window 16, it can be seen from the transparent confirmation window 16 (see FIGS. 1, 2, 4B, and 8). 21 is a gas or liquid filler injected into the filling bags 19a and 20a, and 22 is a Z-shape provided between the lower surface of the head of the tightening bolt 14 and the horizontal protrusion 9a of the fixed holding portion 9. The exposed portion of the rod-shaped body 19 is crushed by sandwiching the exposed portion of the horizontally long rod-shaped body 19 with the horizontal protruding portion 9a of the fixed holding portion 9 with a pressing metal fitting. Reference numeral 23 denotes a pressing bracket mounting hole which is provided in a portion of the pressing bracket 22 facing the portion that presses the rod-like body 19 and through which the clamping bolt 14 passes.

  FIG. 1 shows a state in which a step 2 is fixed to a step shaft 4 according to the present invention. FIG. 2 is a partial cross-sectional view of FIG. 1, showing a state in which a plurality of spherical display bodies 20 are moved upward inside the guide cylinder 17 and pressed against the inner surface of the transparent confirmation window 16. FIG. 3 shows a state in which the transparent confirmation window 16 is confirmed from the upper surface of the tread board 5, and the spherical display body 20 located at the tip of the transparent confirmation window 16 contacts the inner surface of the transparent confirmation window 16. It is shown that this is visible from the transparent confirmation window 16. In this state, it can be confirmed that the step 2 and the step shaft 4 are securely fixed by the tightening bolt 14 using the tightening jig 15.

Next, the operation will be described with reference to FIGS. A plurality of spherical display bodies 20 are installed on the transparent confirmation window 16 side inside the guide cylinder 17, and half of the spherical display body 20 is inserted into the cylindrical part from the open end side of the other end of the guide cylinder 17, and the other half is A horizontally long rod-shaped body 19 exposed outside the open end of the other end of the guide cylinder 17 is installed. At this time, the spherical display body 20 located at the tip in the cylindrical portion of the guide cylinder 17 is located slightly away from the transparent confirmation window 16 and cannot be seen from the transparent confirmation window 16 (see FIG. 4A). .
Next, when a part of the rod-shaped body 19 exposed from the guide cylinder 17 is pressed with pressure P, the force acts on the inner surface of the filling bag 19a of the rod-shaped body 19 through the filler 21 of the rod-shaped body 19, and The filling bag 19a extends, and the pressure P is transmitted to the adjacent spherical display body 20. One end of the spherical display body 20 located on the transparent confirmation window 16 side farthest from the rod-shaped body 19 is pressed against the inner surface of the transparent confirmation window 16 with pressure P. In this case, since the pressing force of the spherical display body 20 against the transparent confirmation window 16 varies depending on the magnitude of the pressure P, the contact state between the spherical display body 20 and the transparent confirmation window 16 appears in the transparent confirmation window 16. This is proportional to the contact area of the spherical display body 20. That is, the state of the pressure P can be confirmed by confirming the contact area of the spherical display body 20 with the transparent confirmation window 16 (see FIG. 4B).

  A specific structure will be shown and described with reference to FIG. Although the tread board 5 is omitted in FIG. 5, the transparent confirmation window 16 is embedded in the tread board 5 from the lower surface of the tread board 5, and the transparent confirmation window 16 can be confirmed from the upper surface of the tread board 5. ing. Further, only the horizontal protruding portion 9a of the fixed holding portion 9 is described, but this is for explanation. The guide cylinder 17 is bent in a U-shape, and the straight portion on the transparent confirmation window 16 side is vertically oriented so that the plurality of spherical display bodies 20 in the guide cylinder 17 are located below the guide cylinder 17 due to gravity. positioned. In this case, the pressure P described with reference to FIG. 4 is generated by pressing between the horizontal protrusion 9 a of the fixed holding portion 9 and the pressing bracket 22, and the magnitude of the pressure P is determined by the tightening bolt 14 when the pressing bracket 22 is attached. It changes by engaging with the screw hole 13 of the movable holding part 12 through the hole 23 and the insertion hole 10 of the fixed holding part 9. By tightening the tightening bolt 14 until the fixed holding portion 9 and the movable holding portion 12 come into contact with each other, a predetermined pressure P is generated in the rod-shaped body 19 and the spherical display body 20, and the tightening bolt is transmitted through the transparent confirmation window 16. 14 can be confirmed.

  The specific operation of the present invention will be described with reference to FIGS. In FIG. 6, the curved portion of the fixed holding portion 9 of the step 2 is positioned on the upper surface of the predetermined step shaft 4, and the movable holding portion 12 rotates around the holding portion shaft 11, and as shown in FIG. The step shaft 4 is sandwiched between the portion 9 and the movable holding portion 12. At this time, the exposed portion of the rod-shaped body 19 is sandwiched between the pressing fitting 22 and the horizontal protrusion 9 a of the fixed holding portion 9, but no pressure P is applied. Next, as shown in FIG. 8, the clamping bolt 15 is engaged with the screw hole 13 of the movable holder 12 through the mounting hole 23 of the pressing bracket 22 and the insertion hole 10 of the fixed holding portion 9 by the clamping jig 15. The tightening bolt 14 is rotated in the tightening direction. At this time, pressure P is generated at the exposed portion of the rod-shaped body 19 by the pressing metal fitting 22 and the horizontal protrusion 9a of the fixed holding portion 9, and the spherical display body 20 is pushed up toward the transparent confirmation window 16 side. Finally, as shown in FIG. 1, the horizontal protrusion 9 a of the fixed holding portion 9 and the horizontal protrusion 12 a of the movable holding portion 12 are in close contact, and the spherical display body 20 contacts the inside of the transparent confirmation window 16. And becomes visible from the transparent confirmation window 16.

DESCRIPTION OF SYMBOLS 1 Machine room, 2 steps, 3 step chain, 4 step axis, 5 tread, 6 tracking roller, 7 bracket, 8 through hole, 9 fixed holding part, 9a horizontal protrusion part, 10 insertion hole, 11 holding part axis, 12 movable Holding part, 12a horizontal protrusion part,
13 Screw hole, 14 Tightening bolt, 15 Tightening jig, 16 Transparent confirmation window, 17 Guide tube, 18 Air hole, 19 Bar-shaped body, 19a Filling bag, 20 Spherical display body, 20a Filling bag, 21 Filling material, 22 Pressing bracket, 23 Mounting bracket mounting hole.

Claims (4)

A step board constituting a step and provided with a through-hole penetrating from the upper surface to the lower surface, a bracket provided on the lower surface of the step board, constituting the step, and an upper surface of the step shaft fixed to the bracket and engaged with the step A fixed holding portion having a curved portion that is engaged across, an insertion hole provided in a horizontal projecting portion at one end of the fixed holding portion, and the bracket provided rotatably via a movable shaft, the step A movable holding portion having a curved portion engaged with the lower surface of the shaft; a screw hole provided in a horizontal projecting portion at one end of the movable holding portion; and a screw hole of the movable holding portion through an insertion hole of the fixed holding portion. And a fastening bolt for engaging and fixing the step to the step shaft by the fixed holding portion and the movable holding portion, and inserting a fastening jig from the upper surface of the tread plate through a through-hole when mounting the step for inspection work And the tightening bolt In the footstep escalator for fixing the footstep is rotated in the tightening direction to the step shaft,
A transparent confirmation window provided on the top surface of the tread so that the tightening state of the tightening bolt can be confirmed from above the tread;
A guide tube provided on the lower surface of the confirmation window, the other end being opened and positioned near the head of the tightening bolt;
A rod-shaped body that is partly inserted into the cylindrical portion of the guide tube and the remaining portion is exposed to the outside of the guide tube, and is configured in a filling bag sealed with a flexible and stretchable material,
A plurality of spherical display bodies that are inserted into the cylindrical portion of the guide cylinder so as to be positioned at the tip of the rod-shaped body, and are normally invisible from the transparent confirmation window;
A pressing tool provided between the head of the clamping bolt and the horizontal protruding portion of the fixed holding portion, and crushing the exposed portion of the rod-like body between the horizontal protruding portion of the fixed holding portion; With
When the step is attached by rotating the tightening bolt in the tightening direction, the pressing tool sandwiches the exposed portion of the rod-shaped body between the horizontal projecting portion of the fixed holding portion and crushes the guide tube. A step of an escalator characterized in that a part of the rod-shaped body in a cylindrical portion is stretched and the spherical display body is pressed against the inner surface of the transparent confirmation window.   2. The step of an escalator according to claim 1, wherein a transparent end window and a cylindrical end surface located at a portion in contact with the upper surface of the tread plate of the guide tube are integrally formed.   The step of the escalator according to claim 1 or 2, wherein the spherical display body is composed of a filled bag sealed with a colored flexible and stretchable material.   The escalator step according to claim 3, wherein a gas or liquid filler is injected into the rod-shaped filling bag and the spherical display filling bag.

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