JPS59230985A - Step lifting gear of step 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 The present invention provides an escalator in which a special step is incorporated in a part of the step and has a movable tread that rises to the same height as the tread of an upwardly adjacent step on the outbound path of a conveyance path. This invention relates to the improvement of a device for raising and lowering the entire tread of a step.

First, a conventional escalator will be explained with reference to FIG.

In FIG. 1, 1 is a main frame, 2 is a step, 3 is a step chain for connecting a large number of steps 2 in an endless manner to move the conveyance path 4, and 5
Reference numeral 1 indicates a railing installed on the main frame 1 so as to be in contact with both sides of the steps 2, 6 indicates a drive device provided within the main frame 1 and drives the step chain 3, and 7 indicates a step chain provided within the main frame 1. This is a tensioning device that tensions 3 at the turn-down part of the lower floor.

In the escalator configured as described above, the steps 2 move along the conveyance path 4 via the step chain 3 by forward and reverse driving of the drive device 6, but the steps 2 are limited in length in the moving direction, that is, in the front and back direction. Because of this, the wheelchair user could not get on one step 2 with the wheelchair, and the wheelchair user could not use the escalator.

Therefore, the applicant of this invention has proposed that one
A special step with a small number of movable treads is incorporated, and when the special step is moving on the slope of the outgoing path of the conveyance path, the movable tread is set at the same height as the tread of the step adjacent above the special step. We previously proposed an elevator in which a wheelchair can be carried by climbing up and straddling the treads and the movable treads. However, the previously proposed elevator tread lifting device had a problem in that it had a complicated structure.

This invention solves the above-mentioned problems by engaging the step shaft of the special step with the interlocking mechanism and rotating it, thereby operating the screw-type lifting mechanism to raise and lower the movable tread. It is an object of the present invention to provide a tread elevation device for an escalator step that can reliably raise and lower a movable tread in conjunction with the movement of a special step.

An embodiment of the present invention will be described below with reference to FIGS. 2 to 6.

FIG. 2 shows an escalator equipped with a step lift device according to an embodiment of the present invention. In FIG. 2, the same reference numerals as in FIG. 1 indicate all the same or equivalent parts, 8 is a special step, and the special step 8 is one or more small number incorporated between a large number of steps 2,
It is structured as follows. In other words, the special step 8 is
As shown in FIGS. 3 and 4, a fixed tread 10 and a riser 11 are fixed to a frame 9, a step shaft 12 pivotally supported by the frame 9 is connected to a step chain 3, and a step shaft 12 is connected to a step chain 3. A pinion 14 is fitted and fixed to one end protruding from a drive roller 13 that is loosely fitted to the chain 3 and the step shaft 12, and a movable step board 16 is moved up and down with respect to the fixed step board 10 by a screw type lifting mechanism 15. Equipped. In the elevating mechanism 15, a bevel gear 18 that meshes with a bevel gear 17 that is fitted and fixed to the intermediate portion of the step shaft 12 is fitted and fixed to a transmission shaft 19, and the transmission shaft 19 is fixed to the fixed step plate 10. Another bevel gear 2 is pivotally supported by a bracket (bracket) 20 fixed to a member such as the frame 9 via a bearing 21, and is fitted and fixed to the transmission shaft 19.
2 is meshed with a bevel gear 24 provided in the female threaded cylinder. The female thread cylinder is supported in an axially immovable but rotatable manner by a bearing 5 fixed to the bracket, and a threaded rod screwed into the female thread cylinder n is attached to the back surface of the movable tread plate 16. It is fixed at right angles to the tread surface 16a. Further, when the movable treadle 16 is lowered, the tread surface 16a is located on the same horizontal plane as the tread surface 10a having the cleat of the fixed treadle board 10, and when it is raised, the tread surface 16a is located on the same horizontal plane as the tread surface 10a having the cleat.

The lower curved portion and the inclined portion are positioned on the same horizontal plane as the tread surface of the tread plate 27 of the ordinary step 2 adjacent above. In addition, in FIG. 3, 返 is a guide rail on which the driving roller 13 is supported in a removable manner, 29 is a follow-up roller pivotally supported on the frame 9, and add is a guide rail on which the follow-up roller 29 is supported in a removable manner. . Furthermore, as shown in FIGS. 2 and 3, the upper and lower curved portions 4a of the outgoing path of the conveyance path 4.

Interlocking mechanisms 31 and 32 are arranged in the portions corresponding to 4b, and the interlocking mechanisms 31 and 32 have electromagnetic devices 33 and 34 identified to the main frame 1, and the electromagnetic devices 33 and 34 face the binions 14 so as to be able to engage with them. Concave arc rack rods 35 and 36
are each connected. Note that FIG. 137 shows a wheelchair.

Next, the operation of the embodiment configured as above will be explained.

During normal operation, the tread 1 of the movable tread 16 of the special step 8
6a is positioned on the same horizontal plane as the tread 10a of the fixed tread 1o, and the interlocking mechanisms 31 and 32 are not operated, these rack rods 35 and 36 and the pinion 14 of the special step 8 are Since they do not interlock, they can be used like regular escalators.

When the wheelchair user attempts to ascend, the wheelchair user operates a switch (not shown) on the lower floor side, and the special step 8 is activated when it reaches the horizontal part of the outgoing route on the lower floor of the transport path 40. Stop the device 6. In this state, the wheelchair user, while riding in the wheelchair, pushes the movable tread 16 of the special steps 8.
and the step board 27 of the ordinary step 2 adjacent to the front side thereof. After that, the wheelchair user operates a dedicated switch (not shown), and the interlocking mechanism 31゜32 <7) t
Wi device t 33 , 341) E operation siterac rod 3
5 and 36 are advanced to a position where they can mesh with the pinion 14, and the driving device 6 is driven in the upward direction of the treadle. By driving this driving table 6, the step plate 2 is moved through the step chain 3. The special step 8 rises, and the step 2 adjacent to the front side moves to the construction bend 4.
When reaching position b, the pinion 14 engages with the rack rod 36 of the interlocking mechanism 32 located below, and as the special step 8 moves, the pinion 14 and the step shaft 12. The umbrella-shaped vehicle 17 rotates integrally, and the umbrella-shaped gears 17, 18 and the transmission shaft]9. Bevel gear 21
, the female threaded tube rotates after passing through the 22-carat gold tube, and the threaded rod holder threaded into the female threaded tube is pushed up, causing the movable treadle 6 to rise relative to the fixed treadle 10. In this case, as shown in FIG. 5 showing the movement of one special step 8, the driving roller 1 of the special step 8 is
In order to raise the movable footboard 16 following the trajectory of step 3,
Drive roller 13 guide rail 4 and rack rod 36'ft
The tread surface of the tread plate 27 of the step 2 adjacent to the front side and the tread surface of the movable tread plate 16 which are provided in parallel to each other rise while maintaining the same horizontal plane. After passing through the construction curve, the special step 8 moves up the slope with the movable tread 16 in the raised state, and at the upper curve 4a, the binion 14 meshes with the rack rod 35 of the interlocking mechanism 31 located on the upper side. The movable tread 16 of one special step 8 descends with the movement shown in FIG.
is lowered so that it is located on the same water surface as the tread surface 10a of the fixed treadle 10 and the tread surface of the tread plate 27 of the step 2 adjacent to the front side.

In addition, when the wheelchair user wants to descend, he operates a switch on the upper floor side to stop the special step 8 on the horizontal part of the upper floor, and the movable tread 16 of this and the step 2 adjacent to the back side of the special step 8 are stopped. Place the wheelchair on the footboard 27 and turn on the electromagnetic device 33.3.
4'fI: By operating the rack rods 35 and 36 so that they can engage with all the pinions 14, and driving the drive device 6 in the step lowering direction, the movable step plate 16 of the special step 8 is raised at the upward curve. At around 1, it remains in an ascending state on the sloping section, returns to the downward direction at the bend during construction, and reaches the horizontal section on the lower floor.

In addition, in the tread elevation device of this embodiment, the electromagnetic device 3
Rack rods 35 and 36 of 3 and 34 are pinion 14
The side that engages later may operate with a required time delay.

As explained above, the step driving device of this embodiment moves the TfJ moving tread 16 of the special step 8 to the tread 2 of the adjacent step 2.
By keeping the wheelchair on the same horizontal plane as 7 and riding the movable tread plate I6 and tread plate 27, the length of the tread plate in the front and rear direction can be doubled, so that the wheelchair user can use the escalator. Further, in order to raise and lower the movable step board 16, a screw-type lifting mechanism 15 using mechanical means is used, and the lifting mechanism 15 is operated by utilizing the rotation of the step shaft 2 of the special step 8, Furthermore, the entire rotation of the step shaft 12 is on the forward path of the conveyance path 4.

This is done by meshing the rack rods 35 and 36 of the interlocking mechanisms 31 and 32, which are disposed in the parts corresponding to the bending parts 4a and 4b, with the binions 14 of the step shaft 12, so the structure is simple and it is easy to use even though it is sb. , l in the upper and lower sections! 4. Make sure to correct the step 'ft that occurs between the contacting tread 27 of the step 2 and the fixed tread 10 of the movable step 8, and move the movable tread j6 to its tread@1.
6 & can be raised and lowered in conjunction with the special steps 8 so as to maintain the same horizontal plane as the tread surface of the tread, and can maintain the raised state on the slope.

In this invention, in the above embodiment, a rack rod is used as the interlocking mechanism, or a chain is used instead of the rack rod to fully rotate the binion, or a belt is used to frictionally engage the interlocking roller instead of the binion of the step shaft. You may also
A hydraulic cylinder is used instead of the electromagnetic mechanism of the interlocking mechanism in the above embodiment.

An air cylinder mechanism may be used, and the screw type elevating mechanism is not limited to the structure of the above embodiment, but a pantograph type type having a horizontal screw shaft such as an automobile jack may also be used.

As explained above, the tread lifting device for escalator steps according to the present invention has all movable treads that rise at the curved and inclined portions of the conveyance path to the same height as the treads of adjacent treads, and between special steps and ordinary steps. The special step is equipped with a screw-type lifting mechanism that raises and lowers the movable tread by rotating the step shaft.
A mechanism for rotating the step shaft by removably engaging with the step shaft is disposed at a portion corresponding to the curved portion of the outward path of the conveyance path, and when the interlocking mechanism is operated, the movable step board moves up and down in conjunction with the special step. As a result, a wheelchair user can use the IT escalator in a wheelchair by riding the wheelchair by straddling the movable tread of the special step and the tread of the adjacent step.
In addition, although the structure is simple, the movable tread can be raised and lowered at the upper 8th turn of the outbound transport path, and the movable tread can be reliably kept on the same horizontal plane as the tread of the adjacent step throughout the entire outbound journey. There is an effect.

[Brief explanation of the drawing]

Figure 1 is a schematic side sectional view showing the conventional Escalake gold, Figure 2
The figure is a schematic side sectional view of an escalator equipped with a tread lifting device according to an embodiment of the present invention, and FIG.
Figure 4 is an enlarged sectional view taken along the line IV-N in Figure 3;
FIG. 5 is a side view showing the movement of one movable tread in a curved section during construction, and FIG. 6 is a side view showing the movement of one movable tread in one curved section. 1...Main frame, 2...Steps, 3...Step chain, 4...
- Conveyance path, 6... drive device. 8...Special steps, 9.
... Frame, 10... Fixed tread, 11... Riser, 12... Step shaft, 13... ff1tio-ra, 1
4... Binion, 15... Screw type lifting mechanism, 16.
・・Movable treadle, ・・Female screw tube, 26・・Threaded rod,
31, 32... Interlocking mechanism, 33, 34... Electromagnetic device, 35, 36... Rack bar, 37... Wheelchair. Note that the same reference numerals in the figures indicate the same or similar parts. Agent Masuo Oiwa (2 others)

Claims (1)

[Claims] A large number of steps are connected endlessly by step chains to move along the conveyance path, and some of these steps have curved parts on the outgoing path of the conveyance path, and slopes that are at the same height as the treads of the adjacent steps above. In an escalator incorporating a special step with a movable tread that ascends to the top, the special step is provided with a screw-type elevating mechanism that raises and lowers the movable tread by rotation of the step shaft of the step, and a curved part of the outgoing path of the conveyance path and An interlocking mechanism that removably engages with the step shaft to fully rotate the step shaft is disposed in the corresponding part, and when the interlocking mechanism operates, the movable step moves up and down in conjunction with the movement of the special step. A tread elevating device for an escalator step, characterized by: