JPH0353236B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention generally relates to an escalator device capable of transporting vehicles such as wheelchairs for physically handicapped people in addition to passengers, and particularly relates to an escalator device capable of transporting vehicles such as wheelchairs for physically disabled people in addition to passengers, and particularly relates to an escalator device that can transport vehicles such as wheelchairs for physically disabled people in addition to passengers. The present invention relates to an escalator device that secures a space deep enough for people to ride.

[Prior art]

Conventionally, as an escalator device capable of transporting vehicles, there is one disclosed in Japanese Patent Publication No. 56-41555, for example. This is to install deep steps for wheelchairs between general steps. However, in this method, the reversal radius of the wheelchair steps is large, so the main frame of the escalator device is deep, and there are many restrictions when installing it. There was a problem that could not be fixed even if I stopped it.

[Summary of the invention]

This invention solves the above problem by raising the tread of one step and forming a loading space for vehicles with the tread of the adjacent step, thereby increasing the size of the main frame. To provide an escalator device which allows vehicles to be transported without any trouble, and which can correct even if a step deviates from its normal position and stops.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 16.

In the figure, 1 is the main frame of the escalator device arranged at an angle, and 2 is an endless circulation path that is arranged over almost the entire length of the main frame 1 and is mainly composed of guide rails, and is located on the upper surface side of the main frame 1. An outgoing path 2a is formed at the top, reversing portions 2b, 2b are formed at both ends, and a return path 2c is formed at the bottom side. Reference numeral 3 denotes a large number of first type steps arranged along the circulation path 2, and includes a shaft 3a, a front wheel 3b pivotally supported at both ends of the shaft 3a, and a rear wheel 3c pivotally mounted on the opposite side of the shaft 3a. There is. 31 is the first above
A second type step is provided in the circulation path 2 between any of the type steps 3, and the shaft 31a, the front wheel 31
b. It is equipped with a rear wheel 31c. 4 is second class step 3
1, an input body consisting of a shaft 41 pivotally connected to the second type step 31 with its longitudinal direction aligned with the width direction of the second type step 31, and a chain gear fixed to the shaft 41. 42, and a plurality of pin holes 42a are formed in a ring shape on the side surface of the input body 42 at desired intervals. 43 is a bevel gear provided coaxially with the input body 42; 44 is a shaft arranged vertically and pivotally supported by the second type step 31; a bevel gear 44a meshing with the bevel gear 43 is fixed to the lower end of the shaft; ing. 45 is a spur gear fixed to the upper end of the shaft 44.

Reference numeral 5 denotes a fork having an arc shape, the circular center O of the arc is pivotally attached to the second type step 31, and a rack 5a that meshes with the spur gear 45 is formed on the arc surface. 45a is the spur gear 45 and the rack 5a.
The pinion 45a meshes with the second pinion 45a.
It is pivotally supported on a shaft erected on the seed step 31.

6 is a blocking mechanism having an L-shaped lever 6a;
The bent base of this lever 6a is pivotally connected to the second type step 31 so as to be movable up and down, and a pin 6b that is engaged with and disengaged from the pin hole 42a of the input body 42 is bored at the tip facing the input body 42. It is set up. 6c is provided at the pivot point of the lever 6a, and the pin 6b is inserted into the pin hole 42.
A torsion spring 6d that biases the lever 6a in the direction of being inserted into the lever 6a is vertically provided on the second type step 31, and is held so as to be slidable in the vertical direction, and its upper end is attached to the opposite rotation side of the lever 6a. This is a rod facing the moving end from below.

A third type step 32 is adjacent to the second type step 31 and is placed on the lower end side of the main frame 1, and is placed in the circulation path 2 in the same way as the first type step 3, and has a shaft 32a, It has a front wheel 32b and a rear wheel 32c.
In addition, 32d is the riser of the third type step 32,
32g is a hole drilled in the standing wall 32e; 32h is a movable tread of a type 3 step, and the movable step 32h is placed within the gap 32f. The riser 32i is arranged in a fitted state, and the riser 32i is formed into a curved surface so that no gap is formed between it and the inside of the riser 32d during the upward movement of the movable footboard 32h. 32j is an engagement hole formed in the riser 32i opposite to the hole 32g, and 32k is an engagement piece fixed to the back surface of the movable footboard 32h, into which the tip of the fork 5 is inserted. An engagement hole 32l is formed.

Reference numeral 7 designates a locking mechanism provided on the third type step 32, which has a shaft 71 similar to the shaft 41 described above, and an input body 72 fixed to this shaft 71, and the side surface of the input body 72 is provided with the pin hole 42a and Similarly, a pin hole 72a is formed. Reference numeral 73 denotes a blocking mechanism (see FIG. 6) provided on the third type step 32, which, like the blocking mechanism 6, includes a lever 73a, a pin 73b, and a torsion spring 73.
c, and a rod 73d.

74 is a pinion fixed to both ends of the shaft 71;
A rack 76a with which this pinion 74 meshes is formed on an engaging rod 76, and the engaging rod 76 is connected to the third type step 32.
It is supported so as to be slidable in a direction orthogonal to the shaft 71 by a guide body 75 horizontally fixed to the shaft 71 .

8 is a drive mechanism located at the end of the outgoing path 2a and installed in the main frame 1, and the frame 8 supports the entire drive mechanism 8.
1 is fixed to the main frame 1. Reference numeral 81a denotes a guide rod erected on the frame 81, 82 a motor for raising and lowering the step fixed to the frame 81, 83 a movable frame of the drive mechanism 8, and a cylindrical engager with a female thread on the lower surface of the movable frame 83. 83a is provided protrudingly, and this cylindrical engager 8
A screw 82a directly connected to the rotating shaft of the elevating electric motor 82 is screwed into 3a, and by rotating this screw 82a with the electric motor 82, the movable frame 83 is moved up and down. Reference numeral 83b denotes a guide body fixed to the lower surface of the movable frame 83, and this guide body 83b is slidably fitted into the guide rod 81a.

84 is a shaft supported on one end of the movable frame 83 and arranged so that its axis is perpendicular to the width direction of the main frame 1; 84a is a chain gear fixed to the shaft 84; 84b
84c is a chain gear pivotally mounted on the other end of the movable frame 83, facing the chain gear 84a, and 84c is a three-row roller chain configured endlessly.
84d is a support provided on the upper lower surface of the drive band 84c; 84e is a support piece made of an elastic material that elastically supports the support 84d on the movable frame 83; 85 is an electric motor that is installed on the movable frame 83 and drives the shaft 84.

9 is the above-mentioned first, second and third class steps 3, 31, 3
The circulation path 2 is connected to the shafts 3a, 31a, 32a of 2.
10 is a front wheel rail for guiding the front wheel of the step fixed to the main frame 1 and arranged along the circulation path 2; 11 is a front wheel rail for guiding the front wheel of the step, which is also fixed to the main frame 1 and arranged along the circulation path 2;
Rear wheel rail for rear wheel guide arranged along 1
2 is a first detector provided on the frame 81 and consists of a switch for detecting the lowering end of the movable frame 83; 13 is the frame 8;
A second detector 14 is provided on the shaft of an electric motor 85 and operates according to the rotation speed of the electric motor 85 to move the fork 5 and the engagement rod 75 in and out. This is a third detector consisting of an integration switch that detects the amount.

FIGS. 12 and 13 show an example of a step position detection device according to the present invention, which includes sprockets 15a and 15b separated by a desired distance, and two rows of sprockets wrapped around both sprockets 15a and 15b. A chain 16 is provided, and detection pieces P1 and P2 of different lengths are attached to each row of the chain 16.

A chain 20 is wound between a sprocket 17 provided coaxially with the one sprocket 15a and a sprocket 19 provided coaxially with the main sprocket 18 around which the step chain 9 is wound. It is now possible to drive the vehicle.

Also, the sprocket 15a of the chain 16
On the side are non-contact detection switches (proximity switches) 2D, 2L, 2LD, 2LU for the upper landing, and on the sprocket 15 side are non-contact detection switches (proximity switches) 1D, 1L, 1LD, 1LU for the lower landing.
are arranged respectively.

The proximity switch 1L also detects that the second type step 31 is in the correct position at the lower landing using the detection piece P1.
is for detecting a stop command position, which detects by means of the detection piece P1 that the second type step 31 is a predetermined distance before the normal position of the lower landing.

The proximity switch 1LD uses the detection piece P2 to detect that the second type step 31 is located closer to the upper landing than the normal position of the lower landing, and the proximity switch 1LU uses the detection piece P2 to detect the second type step 31. This is to detect that the is located on the lower end side of the lower landing than the normal position.

Further, the proximity switch 2L detects that the second type step 31 is at the normal position in the upper landing using the detection piece P1, and the proximity switch 2D detects that the second type step 31 is at the normal position in the upper landing based on the detection piece P1. This is for detecting a stop command position that is a predetermined distance before the stop command position.

Furthermore, the proximity switch 2LD detects that the second type step 31 is located closer to the lower landing than the normal position of the upper landing using the detection piece P2. This is to detect that the position is closer to the upper end than the normal position of the upper landing. .

Figure 14 shows the main circuit of the electric motor for operating the escalator, where R, S, and T are three-phase AC power supplies;
Reference numeral 21 denotes a normal operation (high speed) electric motor, which will be described later, and this electric motor 21 is connected to an AC power source via a three-pole open contact C1a of a normal operation contactor C1, which will be described later.

Reference numeral 22 denotes a motor for low-speed operation connected to the AC power supply, and on this power supply side there are a 3-pole normally open contact C2a of a contactor C2 for low-speed ascending operation and a 3-pole normally open contact C3a of a contactor C3 for low-speed descending operation, which will be described later.
is connected.

15 and 16 show an example of an escalator operation control circuit according to the present invention, in which the contactor C1 for normal operation is connected to a stop switch S2, safety switches S5 and S6, and a normal operation start switch S.
1 and contactor C for low-speed rise and low-speed fall operation
It is connected between the (+) and (-) DC power lines L1 and L2 via the normally closed contacts C2b and C3b of C2 and C3, and is further connected to the contactor C for low-speed ascending operation.
One end of 2 is a low speed ascending operation command relay C which will be described later.
The safety switch S
6 and the normal operation start switch S1, and the other end is connected to the (-) power line L2. Similarly, one end of the low-speed descending operation contactor C3 is connected to a connection point via a normally open contact C8a of a low-speed descending operation command relay C8, which will be described later, a normally closed contact C2c of a low-speed ascending operation contactor C2, and the normally closed contact C1c. A, and the other end is connected to the (-) power line L2.

C4 is a stop command relay, which is connected to the power supply line L1 through a parallel circuit with the proximity switch 1D for detecting the stop command position, the normally closed contact C1d of the contactor C1 for normal operation, and the normally closed contact C5d of the call relay C5, which will be described later. , L2.

Normally open contact C1 of the above normal operation contactor C1
b and the normally open contact C4a of the stop command relay C4 are connected in parallel.

The call relay C5, as shown in FIG.
A self-holding contact C5a connected between power lines L1 and L2 via a call switch S3 and connected in parallel to the call switch S3 includes a normally closed contact C10a of an engagement detection relay C10 and a low-speed operation memory relay C11, which will be described later. The normally closed contacts C11b are connected in series.

C6 is a low-speed operation command relay, which includes a restart switch S4 and a normally open contact C10b of the engagement detection relay C10.
and a self-holding contact C6a and a low-speed operation stop switch which will be described later. A series circuit with normally open contact C9a of command relay C9 is connected in parallel.

Further, the low-speed upward operation command relay C7 includes a parallel circuit of the proximity switches 1LU and 2LU, and
It is connected between the power lines L1 and L2 through a series circuit of the normally open contact C5 of the call relay C5 and the normally closed contact C9c of the low speed operation stop command relay C9, and one end of the relay C7 is connected to the normally open contact C5 of the low speed operation stop command relay C6. It is connected to the (+) power supply line L1 via the open contact C6b.

Furthermore, the low speed descending operation command relay C8 is similarly connected between the power lines L1 and L2 via a series circuit of a normally open contact C5c and a normally closed contact C9c, and a parallel circuit of the proximity switches 1LD and 2LD.

The low-speed operation stop command relay C9 is connected to the power supply line L1, The self-holding contact C9b is connected in parallel to the series circuit of the normally open contact C6c and the normally closed contact C2d.

Further, the engagement detection relay C10 connects the normally open contact 12a of the first detector 12 and the third detector 14.
The fork at the upper landing is connected in parallel to the power lines L1 and L2 through the fork retirement detection contact 14a at the lower landing, and the fork at the upper landing is connected to the third detector 14 in a series circuit between the normally open contacts 12a and 14a. A series circuit is connected in parallel to the retirement detection contact 14b and the self-holding contact C10c of the engagement detection relay C10.

The low speed operation memory relay C11 is connected between the power lines L1 and L2 via the normally open contact C6d of the low speed operation command relay C6 and the normally closed contact C1e of the normal operation contactor C1, and the upper normally open contact C6d. A self-holding contact C11a is connected in parallel to the self-holding contact C11a.

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

In the normal operating state of the escalator, the second and third type steps 31 and 32 are arranged adjacently between the first type steps 3 and 3, and are connected by the step chain 9 similarly to the first type step 3. . In normal operation, the fork 5 is held under the back surface of the second type step 31, the movable frame 83 including the drive mechanism 8 is held at the lower end position, and the engagement rod 76 is held in the engagement hole. 32
j, engages with the hole 32g to hold the movable step plate 32h in a fixed state on the third type step 32, and the blocking mechanism 6,
The pins 6b and 73b of 73 fit into the pin holes 42a and 72a of the input bodies 42 and 72 to prevent the forward and backward movement mechanism 4 and the lock mechanism 7 from operating.

In this state, the call relay C5 is de-energized and the stop command relay C4 is energized, so if you press the start switch S1 for normal operation, the (+)-stop switch S2-safety switch S5
- Safety switch S6 - Start switch S1 - Contact C
Contactor C1 for normal operation is energized by the closed circuit of 2b-contact C3d-relay C1-(-), and the 3rd
By closing the normally open contact C1a, the motor 2
1 is connected to a three-phase power supply R, S, T, and the motor 2
1 through the step chain 9.
The seed steps 3, 31, and 32 are operated in circulation along the circulation path 2.

At this time, the front wheel 3 is
b, 31b, 32b are guided by the rear wheel rail 11, and 3c, 31c, 32c are guided by the rear wheel rail 11, and the first to third type steps 3, 31, 32 move horizontally at the end of the outgoing path 2a, and are in a horizontal position at the intermediate part. It moves at an incline while maintaining the same position, and general passengers are transported in this state.

On the other hand, when a wheelchair user uses an escalator in the upward direction, the following operation is performed.

That is, in a state where the escalator is normally operated in the upward direction, the wheelchair user 100 or the caregiver 10 who attempts to use this escalator
1 (see Figure 1) is the call switch S3 at the lower passenger entrance.
When you press (+) - switch S3 - relay C5 -
The call relay C5 is energized by the (-) closed circuit, closes its normally open contacts C5a to C5c, opens its normally open contact C5d, and is self-held by the normally open contact C5a and the normally closed contact C11b. When the detection piece P1 attached to the chain 16 running together with the escalator faces the proximity switch 1D, the proximity switch 1D opens, deenergizes the stop command relay C4, and opens its normally open contact C4a. At the same time as the normal operation contactor C1 is deenergized, its three-pole normally open contact C1a opens to cut off the power supply to the electric motor 21, stopping the electric motor 21 and stopping the steps. At this time, if the second type step 31 has gone too far from the normal position, the detection piece P2 faces the proximity switch 1LD and closes it.

Therefore, the (+)-contact C5c-contact C9c-proximity switch 1LD-relay C8-(-) close circuit energizes the low-speed descending operation command relay C8, and by closing the normally open contact C8a, the low-speed descending operation is started. Contactor C3 is energized and closes its three-pole normally open contact C3a.

As a result, three-phase AC power is supplied to the electric motor 22 for low-speed operation, and by starting the electric motor 22, the steps are lowered at a low speed. As a result, detection piece P2
When the switch is removed from the proximity switch 1LD, the proximity switch 1LD is turned off, the low speed descending operation command relay C8 is deenergized, and the contactor C3 is also deenergized, the power supply to the electric motor 22 is cut off, and the steps stop at the same time. , the detection piece P1 faces the proximity switch 1L.

That is, the second and third type steps 31 and 32 are on the outbound route 2a.
It stops at the horizontal movement point at the lower end of the
The state shown in the figure will be reached. When an engagement command is generated by the detection piece P1 facing the proximity switch 1L, the lifting motor 82 is started and rotated together with the movable frame by the screw 82a and the engaging element 83a screwed thereto. 83 rises, and when the movable frame 83 reaches the rising end and the second detector 13 is activated, the rotation of the lifting motor 82 is stopped and the drive band 8
4c engages with the input bodies 42, 72. Further, as the movable frame 83 rises, the rods 6d and 73d are pressed and lifted, so the levers 6a and 73a rotate, and the pins 6b and 72b are removed from the pin holes 42a and 72a of the input bodies 42 and 72, respectively. Next, the electric motor 85 is started, and the drive belt 84c runs through the chain gears 84a and 84b, and the input body 42
rotates, bevel gears 43, 44a, spur gear 45,
Due to the engagement of the pinion 45a and the rack 5a, the fork 5 protrudes from below the second type step and engages with the engagement piece 32k of the third type step 32, and power is supplied to the electric motor 85 by the operation of the third detector. is cut off and stops.

Further, the input body 72 rotates due to the movement of the drive band 84c, and the engagement rod 76 comes out of the hole 32g and the engagement hole 32j via the pinion 74 and the rack 76a, and the engagement between the riser 32i and the vertical wall 32e is released. The state shown in FIGS. 9 and 10 is reached. Note that since the upper side of the drive band 84c is supported by the elastically supported support member 84d, the drive band 84c is smoothly engaged with the input bodies 42, 72. Then, from the state shown in FIGS. 9 and 10, the lifting motor 82 is started in the reverse direction, the movable frame 83 is lowered, and the first detector 12
When is pressed, the lifting motor 82 stops. Further, as the movable frame 83 descends, the blocking mechanisms 6, 73
This prevents the forward and backward movement mechanism 4 and the lock mechanism 7 from operating.

When the connection between the second type step 31 and the third type step 32 is completed, the contact 12a of the first detector 12 and the contact 14a of the third detector 14 are closed, and the (+)-contact 14a is closed.
-Contact 12a-Relay C10-The engagement detection relay C10 is energized by the closed circuit of (-) and is self-held via the fork retirement detection contact 14b in the upper landing area.

Type 2 and 3 stairs combined for wheelchair users 3
1, 32 and press the restart switch S4, the closed circuit of (+) - switch S4 - contact C10b - contact C5b - relay C6 - (-)
Low speed operation command relay C6 is energized. When the normally open contact C6c closes, the (+)-contact C6
c-Contact C2d-Proximity switch 2D-Relay C9
- (-) closed circuit low speed operation stop command relay C9
is energized and self-holding at point C9b.

As a result, the relay C6 also has (+)-contact C6
a-Contact C9a-Contact C5b-Relay C5-(-)
It is self-maintained by the circuit.

On the other hand, (+) - contact C6b - relay C7 - (-)
The circuit energizes the low-speed ascending operation command relay C7, and its normally open contact C7a closes.
(+) - Switch S2 - Safety switch S6 - Contact C
1c - Contact C7a - Contact C3a - Contactor C2
- (-) closed circuit is formed, which energizes the contactor C2 for low-speed ascending operation, closes the three-pole normally open contact C2a in FIG. Activate and run the steps at low speed.

Furthermore, when the normally open contact C6d is closed as the relay C6 is energized, the low-speed operation memory relay C11 is activated in the closed circuit of the (+)-contact C6d-contact C1e-relay C11-(-). relay C1
1 is self-held at its contact C11a. At this time, the normally closed contact C11b of the relay C11 is opened, so the call relay C5 is connected to the contact C10 of the relay C10.
It is self-maintained by agility.

In addition, a wheelchair is loaded into the space formed by the second and third type steps 31 and 32, and the escalator is operated in the upward direction, and as the second type step 31 moves to the slope part, it is supported by the fork 5. The movable tread 32h raised relative to the third type step 32,
As shown in FIG. 11, the loading space for the wheelchair is held horizontally.

Then, the second and third type steps 31 and 32 are
When the vehicle travels above a and the second type step 31 approaches the upper landing and the detection piece P1 faces the proximity switch 2D, the proximity switch 2D opens, the low speed operation stop command relay C9 is deenergized, and the low speed operation is stopped. Command relay C6 is also deenergized. At this time, the low speed ascending operation command relay C7 is (+) - contact C5c - contact C9c - proximity switch 2LU - relay C7 -
The energized state is maintained by the (-) closed circuit. For this reason,
The step further moves in the upward direction, and when the detection piece P2 comes off the proximity switch 2LU, the proximity switch 2
LU is opened, low-speed upward operation command relay C7 is deenergized, and low-speed upward operation contactor C is activated.
2 is also deenergized, thereby cutting off the power supply to the electric motor 22 and stopping the electric motor 22. At this time, the detection piece P1 faces the proximity switch 2L.

Here, if the step goes too far from the normal position and stops, the detection piece P2 opposes the proximity switch 2LD and closes it, causing the (+)-contact C
5c - Point C9c - Proximity switch 2LD - Relay C
8-(-) closed circuit low speed descending operation command relay C
8 is energized, and further (+) - switch S2 - safety switch S5 - safety switch S6 - contact C8a
- Contact C2c - Contactor C3 - (-) circuit,
The contactor C3 for low-speed descending operation is energized and closes its three-pole normally open contact C3a, thereby starting the low-speed electric motor 22 in the reverse direction, and the step descends at a low speed. Then, when the detection piece P2 is removed from the proximity switch 2LD, the proximity switch 2LD opens, the relay C8 is deenergized, and the contactor C3 is also deenergized, the power supply to the electric motor 22 is cut off, and the step stops at the normal position. . At this time, the detection piece P1 faces the proximity switch 2L, and the step, that is, the second and third type step 3
1,32 decoupling commands are issued. and,
After the escalator has come to a secure stop, the wheelchair is removed from the top of the steps.

When a release command is sent by turning on the proximity switch 2L, the drive mechanism 8 provided at the upper end of the outgoing path 2a is activated and moves upward to engage the drive band 84c with the input bodies 42, 72, and the electric motor 85 , the fork 5 is retired and support for the third type step 32 is released, and the engagement rod 76 is inserted into the engagement hole 32j and the hole 32.
g, and the movable step board 32h is held on the third type step 32. Thereafter, when the drive mechanism 8 is lowered and the fork is disengaged, the contact 14b opens and the relay C10 is deenergized. As a result, relay C5 is deenergized.

When the wheelchair user presses the start switch S1 again after using the escalator, the contactor C1 is energized, the electric motor 21 is started, and the escalator is returned to normal operation and used for transporting general passengers.

As described above, in the embodiment of the present invention, it is possible to transport a wheelchair user without any problems, and since there is no deep step for loading the wheelchair, the main frame 1 does not become large and it is easy to transport the wheelchair user. It can be installed in Furthermore, since an automatic position correction means is provided for correctly stopping the step at the correct position, the step can be reliably stopped at the normal position, and the operation of the engagement device can also be ensured.

〔Effect of the invention〕

As explained above, according to the present invention, between the first type steps that are continuously arranged and operated in circulation, there is a second type step having a projectable fork, and a second type step adjacent to the second type step. A third type step having a movable tread supported by a fork is disposed at the top, and a drive mechanism for protruding the fork is provided at the forward end of the conveyance path, so that horizontal movement of the second and third type steps is prevented. The movable tread is supported by forks at certain points, and as the 2nd type step moves incline, the movable tread rises from the 3rd type step, maintaining the space for the wheelchair and allowing the wheelchair user to be transported without any problems. Because there are no steps with special dimensions, the reversal radius of the steps does not increase and only a small main frame is required.
It is possible to realize an escalator device that can be easily installed with few restrictions on the installation location.

In addition, an automatic correction means is installed at the entrance to correct the steps, so even if the steps do not stop at the correct position, they can be reliably corrected to the correct position. The step can be stopped at a position where the engagement device can operate, and the operation of the engagement device can also be ensured.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view conceptually showing an embodiment of an escalator device according to the present invention, FIG. 2 is an enlarged view of a portion of FIG. 1, FIG. 3 is a plan view of FIG. 2, and FIG. 2, FIG. 5 is a sectional view taken along the - line in FIG. 2, FIG. 6 is a sectional view taken along the - line in FIG. 2, FIG. 7 is a sectional view taken along the - line in FIG. 2, and FIG. is a sectional view taken along the - line in FIGS. 5 and 6, FIG. 9 is a diagram explaining the operation of the drive mechanism etc. in FIG. 2, FIG. 10 is a plan view of FIG. 9, and FIG. 11 is a diagram of FIG. 9. FIG. 12 is an explanatory side view showing an example of the step position detection mechanism according to the present invention, and FIG. 13 is a plan view thereof. , FIG. 14 is a main circuit diagram of the escalator driving electric motor according to the present invention,
FIG. 15 and FIG. 16 are diagrams showing an example of a control circuit according to the present invention. 1...Main frame, 2...Circulation route, 2a...Outward route, 2
c... return trip, 3... first class step, 31... second class step, 32... third class step, 4... forward and backward movement mechanism,
5... Fork, 6... Blocking mechanism, 7... Lock mechanism, 8... Drive mechanism, 9... Step chain, 15a,
15b...Sprocket, 16...Chain, P
1, P2...detection piece, 1L, 2L, 1D, 2D,
1LD, 1LU, 2LU...proximity switch, 21...
...Electric motor for normal operation, 22...Electric motor for low speed operation, C1, C2, C3... Contactor, C4-C
11...Relay, S1...Start switch for normal operation, S2...Stop switch, S3...Call switch, S4...Restart switch. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] 1. A large number of devices are arranged in succession on a circulation path having an outgoing path, a reversal section, and a return path, and are moved along the circulation path, horizontally moved at the end of the outgoing path, and tilted while maintaining a horizontal posture in the middle of the outgoing path. and second and third type steps that are provided between the first type steps and circulate integrally with the first type steps, and the second and third type steps are A coupling mechanism is provided which is coupled to each other and forms a wider horizontal portion than usual at the inclined part of the outgoing path, and the coupling mechanism is configured to be capable of coupling and disengaging operations by a user's command by a drive mechanism, and 2,
An escalator characterized by being provided with means for detecting the position of the third type step, and means for correcting the operation to within a predetermined position when the second and third type steps do not stop within a predetermined position range at the end of the outward path. Device.