JP2507661B2 - Escalator device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in the structure of an escalator device having a wheelchair step for carrying a wheelchair and performing a transformation operation during wheelchair driving.

[Conventional technology]

There are various means for transforming the wheelchair steps from a normal form to a form in which the wheelchair can be mounted when driving an escalator for a wheelchair, and there are racks such as a sprocket and a chain, and JP-A-1-313297. By using the and pinion, the wheelchair steps can be transformed during the operation without being temporarily stopped at the entrance / exit, and the transport capacity of the escalator can be prevented from lowering.

9 to 11 show a conventional escalator device, in which (80) is a wheelchair step disposed between a plurality of steps of the escalator, and inside the wheelchair step (80) , A plurality of rotating shafts (12) and (13) for transforming the wheelchair steps (80) are horizontally arranged adjacent to each other, and the sprocket (15) is attached to the plurality of rotating shafts (12) and (13).・
(16) are fitted together and gears meshing with each other are fitted together.

Reference numeral (20) denotes a work-in-progress device which is arranged at each portion corresponding to an entrance / exit of the main frame of the escalator. The work-in-progress device (20) includes a main body (20a) fixed to a fixing member inside the main frame and the main body. A pinion (20b) pivotally supported by (20a),
A rack that meshes with the pinion (20b) is provided, and the main body (2
Vertically supported rod (20c) vertically supported by (0a)
And a rectangular housing (20d) horizontally attached to the top of the rod (20c), and a rotary shaft that is laid on the upper part of the housing (20d) and meshes with the sprockets (15) and (16). A chain (power transmission body) (20e) for rotating (12) and (13) is provided, and is configured to operate based on the operation of the operation switch at the entrance / exit.

Therefore, when the wheelchair user who arrives at the landing gate operates the operation switch, the pinion (20b) of the work-in-progress device (20).
Rotates to raise the rod (20c) shown in FIG. 9 as shown in FIG. 10, and the chain (20e) meshes with the sprocket (15) of the moving wheelchair step (80). When the wheelchair step (80) moves forward in this state, the sprocket (15), in other words, the rotary shaft (12) rotates in one direction to rotate the gear in one direction and mesh with this gear. The gear rotates in the other direction to rotate the rotating shaft (13) in the other direction. However, the movable member is moved by the rotation of the rotating shafts (12) and (13), and the wheelchair steps (80) are transformed from the normal form to the form in which the wheelchair can be mounted.

Then, when the wheelchair steps (80) equipped with the wheelchair move to the exit, the chain (20) of the work-in-progress device (20) is
e) meshes with the sprocket (16) of the wheelchair step (80) that has moved. When the wheelchair step (80) moves forward in this state, the sprocket (16), in other words, the rotation shaft (13) rotates in one direction to rotate the gear in one direction and mesh with the gear. The gear rotates in the other direction to rotate the rotating shaft (12) in the other direction. However, the rotary shaft (13)
・ By rotating (12), the movable member returns to its original state,
The wheelchair step (80) transforms from a wheelchair form to a normal form.

[Problems to be Solved by the Invention]

The conventional escalator device is configured as described above, and the sprockets (15) and (16) meshed with the chain (20e).
Since the wheelchair steps (80) were rotated by rotating the wheelchair steps (80) along with the movement of the wheelchair steps (80), FIG.
As shown in (b), the teeth of the sprockets (15) and (16) that should be in mesh with the roller at the end of the chain (20e) mesh with the roller in the back of the roller, and the teeth adjacent to the tooth are There was a case where it meshed with the roller at the end. Therefore, the meshing of the sprockets (15) and (16) with the chain (20e) becomes unstable, and the sprockets (15) and (16)
There was a problem in that the amount of rotation of the wheelchair fluctuated and the workload, in other words, the transformation motion of the wheelchair step (80) could not be kept constant.

The present invention has been made in view of the above, and an object of the present invention is to provide an escalator device capable of reliably preventing a variation in the amount of rotation and work of a sprocket.

[Means for solving the problem]

In the present invention, in order to achieve the above-mentioned object, a plurality of steps arranged in the main frame of the escalator and cyclically moved, and a wheelchair mounted from a normal form during normal operation during wheelchair operation that is interposed between the plurality of steps A wheelchair step that transforms into a possible form; and a rotating shaft that is rotatably mounted inside the wheelchair step and rotates to transform the wheelchair step.
A sprocket fitted to the rotating shaft and a sprocket of a wheelchair step which is arranged inside the main frame and moves during wheelchair operation, and a power transmission member meshes with the sprocket to rotate the rotating shaft. And a torque limiter for controlling the rotation of the rotating shaft after the transformation operation of the wheelchair steps is interposed between the rotating shaft and the sprocket, and the power transmission body of the work-in-progress device is provided in the main frame. It is characterized by extending in the longitudinal direction.

[Action]

According to the present invention, a torque limiter that controls the excessive rotation of the rotating shaft after the transformation operation of the wheelchair steps is disposed between the rotating shaft and the sprocket, and the power transmission body of the work-in-process apparatus is mainly arranged. Since the sprocket is extended more than necessary by extending in the longitudinal direction of the frame, it is possible to reliably prevent fluctuations in the amount of rotation and work of the sprocket.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to an embodiment shown in FIGS. 1 to 8. In the drawings, (1) is a main frame which is a main body of an escalator, and a main frame (5) is provided on both sides of the main frame (1). As shown in the figure,
The balustrade (2) is erected upright, and the pair of balustrades (2) are wound with endless handrails (3) that circulate and move based on the drive of a driving machine. In addition, a plurality of rotatable sprockets are respectively arranged in the upper machine room (1A) at the upper end of the main frame (1) and the lower machine room (1B) at the lower end, and these plural sprockets are An endless chain (4) that circulates based on the drive of the driving machine is wound. Inside the main frame (1), as shown in FIG.
A pair of front wheel rails (5) and a pair of rear wheel rails (6)
Are arranged in the longitudinal direction, and the pair of front wheel rails (5) and the pair of rear wheel rails (6) work together to provide an endless circulation inside the main frame (1). Forming a road.

(7) is a plurality of steps arranged on the main frame (1). This normal step (7) has a shaft (7a) horizontally penetrating in the upper front part thereof and both ends of this shaft (7a). A rotatable front wheel (7b) that is pivotally mounted and engaged and guided by the pair of front wheel rails (5), and a pair of rear wheel rails (6) that are pivotally mounted at the lower portions on both sides behind the rotatable front wheel (7b). And a rotatable rear wheel (7c) which is guided and joined, and the plurality of chains (4) are connected to both sides of the shaft (7a). However, the steps (7)
Is circulated in synchronization with the handrail (3) while being guided by the pair of front wheel rails (5) and the pair of rear wheel rails (6) by the circulation movement of the chain (4) based on the drive of the driving machine. , Has a function of transporting people and luggage carried upstairs and downstairs (see FIGS. 5 and 6).

(8) is a step group for wheelchairs which is arranged so as to be interposed between the plurality of steps (7), and the step group for wheelchairs (8) is, as shown in FIG. 6, a first wheelchair step (81). A second wheelchair step (82) located behind the first wheelchair step (81) and a third wheelchair step (82) located behind the second wheelchair step (82). It can be equipped with a wheelchair (11) of a wheelchair user (10), which is formed by the wheelchair user (10) and is circulated in the same manner as the step (7) during normal driving, and is assisted by a helper (9) during wheelchair driving. It has the function of transforming into various forms.

The first wheelchair step (81) includes a swing part (810) that swings and tilts during wheelchair driving to avoid interference with the scaffold of the wheelchair user (10). In addition, the second wheelchair step (82) includes a rack-mountable fork (82A) that penetrates the curved back surface of the wheelchair when driving for a wheelchair and projects rearward to the outside. Then, the third wheelchair step (8
3) is a movable tread (83B) that is housed in the main body (83A) so that it can be moved up and down, and is scooped up by the fork (82A) with the rack when driving a wheelchair, and a wheelchair provided inside the movable tread (83B). Wheel stop (83) that locks the wheels of the wheelchair (11) through the upper part of the movable tread (83B) during normal operation
C) and.

In addition, the first, second and third wheelchair steps (81), (8
As shown in FIG. 2, a plurality of rotating shafts (12) and (13) are horizontally mounted adjacent to each other in the inside of the rotating shafts (12) and (13). ), The swing part (81
0), a fork with a rack (82A), and a car stop with a rack (83C), respectively.

Hereinafter, the first wheelchair step (81) and the plurality of rotary shafts (1
When the relationship between 2) and (13) is described in detail, (811) is the swing part (81
(0) is a body of the first wheelchair step (81) that swingably supports from both sides, and the first body is provided between the body (811) and (811).
As shown in the figure, the erection member (812) is horizontally erected, and on both sides of the lower part of the erection member (812), the support portions (813) consisting of a pair of hanging walls are respectively arranged. A plurality of rotating shafts (12) and (13) horizontally penetrating the hanging wall are adjacently arranged between the supporting portions (813) and (813). In addition, the plurality of rotary shafts (12) and (13) have a first
As shown in FIGS. 7, 7 and 8, the torque limiter (14) is fitted in the torque limiter (14), and the sprocket (15), (16) is fitted in the torque limiter (14). Gears (17) and (18) meshing with each other are fitted on the rotary shafts (12) and (13).

The torque limiter (14) is shown in Fig. 3 (a), (b).
As shown in, the main body (14a) fitted to the rotary shafts (12) and (13) via the key, and a plurality of slides fitted to the main body (14a) and superposed on the sprockets (15) and (16). Board (14
b) and a plurality of disc springs (14c) screwed into the main body (14a) and having a washer on one sliding plate (14b) and a loosening prevention function.
And a nut (14d) polymerized via. In addition, the torque limiter (14) is a sprocket (15) after the transformation operation of the first wheelchair step (81).
It has the function of allowing the idle rotation of (16) and controlling the rotation of the rotating shafts (12) and (13). Further, the slip torque of the torque limiter (14) has a function of ensuring the torque required for the transformation operation of the first wheelchair step (81).

Further, as shown in FIG. 1, screws (19) are respectively engraved on both ends of the rotary shafts (12) and (13), and the screws (1
9), a nut (814) is screwed, and the nut (814) is interposed between a pair of hanging walls that form the support portion (813). A pin (815) that horizontally penetrates the upper part of the pair of hanging walls is inserted and attached. Further, stoppers (816) and (81) that come into contact with the lower side of the nut (814) are provided at the lower portions of the facing surfaces of the pair of hanging walls.
7) is attached horizontally, and these stoppers (816) and (81
7) is the nut (814) accompanying the rotation of the rotating shafts (15) and (16)
It acts to regulate the movement of the left and right.

(818) is a hole formed in the lower part of the side wall of the swinging part (810),
By pulling out the pin (815) from the hole (818), the rocking portion (810) rocks and tilts.

(20) is a work-in-progress device which is arranged inside the main frame (1) at a portion corresponding to the entrance / exit, and the housing (20d) and the chain (20e) of this work-in-progress device (20) are shown in FIGS. As can be seen from the comparison of the figures, the chain (20e) is formed by extending horizontally compared to the conventional example, and the chain (20e) is
6) is rotated more than necessary, and both ends of the chain (20e) are swingable downwards on the housing (20e).
It is laid in d) so that it can prevent tooth loss of the sprockets (15) and (16). The other parts are configured similarly to the conventional example.

(21) is an operation switch provided on the side part of the balustrade (2) at the entrance / exit, and the work-in-process device (20) is operated based on the operation of this operation switch (21) (fifth).
See figure).

Therefore, when the wheelchair user (10) who came to the landing gate operates the operation switch (21), the pinion (20b) of the work-in-process device (20) rotates to raise the rod (20c), and the chain (20e) The first wheelchair steps to move (81)
Mesh with the sprocket (15) (see FIG. 8). In this state, when the first wheelchair step (81) moves forward, the sprocket (15), in other words, the rotation shaft (12) rotates in one direction and the gear (17) rotates in one direction. Then, the gear (18) meshed with the gear (17) rotates in the other direction to rotate the rotating shaft (13) in the other direction. Rotating shaft (12) ・ (1
When 3) rotates, the nuts (814) and (814) move to pull the pin (815) out of the hole (818), and the swinging part (810) held by the main body (811) swings and tilts. Then, a part of transformation operation is performed. Then, when the nuts (814) and (814) come into contact with the stoppers (816) and (816) to complete the operation,
The sprocket (15) held between the sliding plates (14b) and (14b) of the torque limiter (14) continues to rotate independently to control the rotation of the rotating shaft (12) (see FIGS. 3 and 4). ). However, after that, the second and third wheelchair steps (8
Similarly, 2) and (83) allow the wheelchair (11) to be mounted by transforming the normal form into a form for wheelchairs.

Then, when the first wheelchair step (81) moves to the exit, the chain (20e) of the work-in-process device (20) meshes with the moving sprocket (16) (see FIG. 7). In this state, when the first wheelchair step (81) moves forward, the sprocket (16), in other words, the rotating shaft (13).
Rotates in one direction to rotate the gear (18) in one direction, and the gear (17) meshing with the gear (18) rotates in the other direction to rotate the rotating shaft (12) in the other direction. Rotating shaft (13)
When the (12) rotates, the nuts (814) and (814) move to insert the pin (815) into the hole (818), and the swinging part (810) is clamped by the main body (811) to cause the transformation operation. Partly done.
And the nuts (814) and (814) are stoppers (817) and
When it comes into contact with (817) and finishes the operation, the sprocket (1
The slide plates (14b) and (14b) holding the 6) rotate the sprocket (16) independently to control the rotation of the rotary shaft (13) (see FIGS. 3 and 4). However, after that, the second
Similarly, the third wheelchair steps (82) and (83) also transform from the wheelchair form to the normal form.

As described above, according to the present invention, the chain (20e) is extended in the longitudinal direction of the main frame (1) more than the conventional example, and the sprockets (15) and (16) are excessively rotated more than necessary, and the nut (814) is rotated. The rotation of the rotating shafts (12) and (13) after the operation of () is controlled by the torque limiter (14), and the sprockets (15) and (16) meshed with the chain (20e).
Only the sprocket (15) ・ (1
It is possible to reliably prevent instability of meshing with the chain (20e) of 6). Therefore, the sprocket (1
5) ・ It can be expected that the fluctuation of the rotation amount and work amount of (16) can be reliably prevented.

The slip torque of the torque limiter (14) has a function of ensuring the torque required for the transformation operation of the wheelchair step group (8).

〔The invention's effect〕

As described above, according to the present invention, the torque limiter for controlling the excessive rotation of the rotating shaft after the transformation operation of the wheelchair steps is disposed between the rotating shaft and the sprocket, and the power of the work-in-process device is set. Since the transmission body is extended in the longitudinal direction of the main frame to rotate the sprocket more than necessary, it is possible to reliably prevent fluctuations in the rotation amount and work amount of the sprocket.

[Brief description of drawings]

FIG. 1 is a front view showing a first wheelchair step of an escalator device according to the present invention, and FIG. 2 is an explanatory view showing a meshing state of first, second, and third wheelchair steps with a work-in-progress apparatus. 3 (a) and 3 (b) are views showing a torque limiter according to the present invention. FIG. 3 (a) is a front view thereof, FIG. 3 (b) is a sectional side view thereof, and FIG. 4 is a meshing state of a sprocket and a chain. FIG. 5 is an overall view showing the escalator device according to the present invention, FIG. 6 is a partial detailed view of FIG. 5, and FIG. 7 is an exit device and first, second, and third devices. Fig. 8 is a relational diagram showing the relation of the wheelchair steps of Fig. 3, Fig. 8 is a device for the landing gate and
3 is an explanatory view showing the relationship between the wheelchair steps, FIG. 9 is an explanatory view showing the relationship between the wheelchair steps and the work-in-progress device during the conventional normal operation, and FIG. 10 is a conventional wheelchair step during the wheelchair operation. And FIG. 11 (a) and FIG. 11 (b) are diagrams showing the meshing state of the conventional sprocket and the chain, and FIG. 11 (a) is a diagram showing the normal meshing state,
FIG. 6B is a diagram showing an abnormal meshing state. In the figure, (1) is a main frame, (7) is a normal step, (8) is a step group for wheelchairs, (11) is a wheelchair, (12) and (13) are rotating shafts, and (14) is a torque limiter. , (15) and (16) are sprockets, (20) is an in-process device, (20e) is a chain (power transmission), (80) is a wheelchair step, (81) is a first wheelchair step, (82) ) Is the second wheelchair step, and (83) is the third wheelchair step. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

(57) [Claims] 1. A plurality of steps arranged in a main frame of an escalator and circulating, and a plurality of steps interposed between the steps to transform a wheelchair into a mode in which a wheelchair can be mounted from a normal mode during normal driving. A wheelchair step, a rotating shaft that is rotatably mounted inside the wheelchair step to rotate the wheelchair step, and a sprocket fitted to the rotating shaft, and a wheelchair disposed inside the main frame. An escalator device including a work-in-progress device for engaging a power transmission body with a sprocket of a wheelchair step which has moved during a driving operation and rotating the rotating shaft, wherein the wheelchair step is provided between the rotating shaft and the sprocket. Arranged via a torque limiter that controls the rotation of the rotating shaft after the transformation operation of
An escalator device comprising a power transmission body of the work-in-process device extended in a longitudinal direction of a main frame.