JP2004338882A - Man conveyor and method for pulling up controller of man conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a man conveyor capable of facilitating the work for pulling up a controller. <P>SOLUTION: This man conveyor is provided with many steps 8 connected so as to circulate and move along an endless path. An electric motor 11 driving the steps 8 is formed to rotate an output shaft 12 by manual operation. The controller 4 is provided in a machine room 2 storing a driving device 3 and is supported so as to move vertically by a guide rail 6. A guide pulley 15 for guiding a wire 16 connecting the steps 8 with the controller 4 so that the controller 4 moves upward or downward in accordance with moving of the steps 8 is provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a man conveyor such as an escalator and a moving sidewalk.
[0002]
[Prior art]
Generally, a man conveyor has a number of steps connected so as to circulate along an endless path, an electric motor for driving the steps, a machine room for housing the electric motor, and a control device provided in the machine room. It has.
[0003]
[Problems to be solved by the invention]
Conventionally, when raising a control device for maintenance or the like, one or more workers must directly raise the control device unless there is a special facility such as a crane. The weight of the device is limited to a size that can be lifted. However, even if the weight can be raised, raising the control device is a difficult task.
[0004]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a man conveyor that facilitates a lifting operation of a control device.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a first invention provides
A number of steps connected so as to circulate along an endless path;
An electric motor that can rotate the output shaft manually while driving the steps,
A machine room that houses the electric motor,
A control device provided in the machine room,
Guide means for guiding a wire connecting the step or a moving body that moves in synchronization with the step and the control device so that the control device moves upward or downward with the movement of the step or the moving body. When,
It is a man conveyor characterized by comprising.
[0006]
Also, the second invention is
A number of steps connected so as to circulate along an endless path;
An electric motor for driving the steps,
An electric circuit that applies a voltage to the electric motor to rotate an output shaft,
A machine room that houses the electric motor,
A control device provided in the machine room,
Guide means for guiding a wire connecting the step or a moving body that moves in synchronization with the step and the control device so that the control device moves upward or downward with the movement of the step or the moving body. When,
It is a man conveyor characterized by comprising.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view of an escalator according to a first embodiment of the present invention, and FIG. 2 is a side view of FIG.
[0008]
In FIG. 1, reference numeral 1 denotes a main frame spanned between floors, and a machine room 2 is provided at one end thereof. The machine room 2 houses a drive device 3 including an electric motor, a speed reducer, and the like.
[0009]
Reference numeral 4 denotes a control device for controlling the whole man conveyor, which is vertically moved by a pair of guide rails 6 and 6 vertically fixed between a pair of machine room beams 5 and 5 attached to the main frame 1 at intervals. It is movably supported. On both sides of the control device 4, hook-shaped engaging portions 7 are provided.
[0010]
The driving device 3 drives a large number of steps 8, 8,... Connected so as to circulate along an endless path. That is, each step 8 is connected to an endless drive chain (not shown) via a connection shaft 9, and this drive chain is engaged with a sprocket (not shown) rotatably supported by the main frame 1. I agree.
[0011]
The sprocket is operatively connected to a speed reducer 10 of a driving device 3 via a transmission member (not shown). When the electric motor 11 of the driving device 3 is driven, the sprocket rotates and the steps 8, 8 are driven. ,... Circulate. The output shaft 12 of the electric motor 11 can be manually driven by a handle 13. Further, the speed reducer 10 has a manually operable brake device (not shown), and operates as a blocking means for preventing rotation of the electric motor 12 by operating the brake device.
[0012]
A pair of pulley support members 14 and 14 are attached to the upper machine room beam 5 so as to be located outside the guide rails 6 and 6. Each of the pulley support members 14 protrudes upward and is bent toward the machine room 2, and a guide pulley 15 (guide means) is rotatably supported at the tip of the pulley support member 14.
[0013]
Reference numeral 16 denotes a wire for connecting the control device 4 and the step 8. At both ends thereof, an annular connection portion 17 for hooking on the hook 7 of the control device 4 is formed. Reference numeral 18 denotes a connector for connecting the wire 16 to the step 8, which is formed in a plate shape having a U-shaped cross section, and is mounted between the steps 8, 8 along the upper surface and the rear end surface of the step 8. One end of the connector 18 is bent outward to form a hook 19 for hooking an intermediate portion of the wire 16.
[0014]
The operation of raising the control device 4 is performed in the following procedure. As shown in FIG. 2, the connecting tool 18 is inserted between the steps 8, and attached to one step 8. Then, the connecting portion 17 at one end of the wire 16 is hooked on the engaging portion 7 on one side of the control device 5, and the wire 16 is guided upward, engaged with the outer peripheral portion of the one guide pulley 15, and guided backward, It is wrapped around the hook 19 of the connector 18 and folded forward. Then, the folded wire 16 is engaged with the outer peripheral portion of the other guide pulley 15 and guided downward, and the connecting portion 17 at the other end is hooked on the hook 7 on the other side surface of the control device 4.
[0015]
When the handle 13 of the driving device 3 is manually rotated in the direction of the arrow in FIG. 2 in this state, the output shaft 12 of the electric motor 11 rotates, and the steps 8, 8,... Move in the direction of the arrow in FIG. Accordingly, the wire 16 pulls the control device 4 upward, so that the control device 4 moves up along the guide rails 6,6. As described above, the force of manually rotating the electric motor 11 to pull up the control device 4 is smaller than the force of directly pulling up the control device 4, and the control device 4 can be easily pulled up.
[0016]
When the control device 4 reaches a predetermined position, the brake device of the speed reducer 10 is operated to lock the output shaft 12. When the operation is completed, the brake device of the speed reducer 10 is released, and the control device 4 is returned to the position before the lifting by rotating the control device 4 by its own weight or by manually turning the handle 13.
[0017]
Next, a second embodiment of the present invention will be described. 3 is a plan view of the second embodiment, FIG. 4 is a side view of FIG. 3, FIG. 5 is an enlarged perspective view of main parts of FIG. 3, and FIG. 6 is a cross-sectional view of main parts of FIG. In the following embodiments, the same or similar portions as those in the first embodiment are denoted by the same reference numerals, and duplicate description is omitted.
[0018]
In FIG. 3, reference numeral 20 denotes an endless moving handrail (moving body), which is slidably mounted in the longitudinal direction on balustrades 21, 21 erected on both sides of the steps 8, 8,. The moving handrail 20 is operatively connected to the driving device 3 and circulates in the same direction in synchronization with the steps 8, 8,.
[0019]
In the present embodiment, the moving handrails 20 and 20 and the control device 4 are connected using two wires 16 and 16 and two fixtures 22 and 22. The fixture 22 is made of an elastic material such as rubber, and is detachably attached to the moving handrail 20 by elastically deforming in a direction in which the width W (see FIG. 6) of the gap between both side ends expands. Can be. The fixing tool 22 is configured to hold the moving handrail 20 by pressing the moving handrail 20 in the width direction and to be fixed on the moving handrail 20 by frictional force generated between the moving handrail 20 and the moving handrail 20. As shown in FIGS. 5 and 6, a connection piece 23 protruding laterally is provided on one side of the fixture 22, and one end of the wire 16 is attached to the connection piece 23. The other end of the wire 16 is attached to the hook 7 on the side of the control device 4.
[0020]
According to such a configuration, when the handle 13 of the driving device 3 is manually rotated in the direction of the arrow in FIG. 4, the output shaft 12 of the electric motor 11 rotates, and the moving handrails 20, 20 move in the direction of the arrow in FIG. . Accordingly, the wires 16, 16 pull the controller 4 upward, so that the controller 4 moves up along the guide rails 6, 6.
[0021]
When the control device 4 reaches a predetermined position, the brake device of the speed reducer 10 is operated to lock the output shaft 12. When the operation is completed, the brake device of the speed reducer 10 is released, and the control device 4 is returned to the position before the lifting by rotating the control device 4 by its own weight or by manually turning the handle 13.
[0022]
Also in the present embodiment, the same effect as that described in the first embodiment can be obtained.
[0023]
Next, a third embodiment of the present invention will be described. 7 is a plan view of the third embodiment, FIGS. 8 and 9 are side views of FIG. 7, and FIG. 10 is an enlarged perspective view of a main part of the third embodiment.
[0024]
As shown in FIG. 7, in the present embodiment, an opening 24 is formed on the upper surface of one step 8, and a lid 25 that seals the opening 24 is detachably attached to the upper surface of the step 8. I have. When the lid 25 is removed, a connecting tool 26 can be attached to the connecting shaft 9 via the opening 24.
[0025]
As shown in FIG. 8, both ends of the connecting member 26 are bent back to the same side in a curved shape, and one end is engaged with the connecting shaft 9 as a moving body, and the other end is engaged with an intermediate portion of the wire 16. . One end of the wire 16 is connected to the hook 7 on one side of the control device 4, and the other end is connected to the hook 7 on the other side of the control device 4.
[0026]
In this embodiment, a ratchet wheel 28 is fixed to a rotating shaft 27 that supports a sprocket (not shown) that drives a drive chain (not shown) connected to the connecting shafts 9, 9,. I have. A gear fixing lever 29 is rotatably and rotatably supported on the upper machine room beam 5 via a horizontal shaft 30 so as to come into contact with and separate from the outer peripheral portion of the ratchet wheel 28.
[0027]
The horizontal shaft 30 is formed with a projection 31 projecting outward in a radial direction, and one end of a transmission wire 32 is attached to the projection 31. The other end of the transmission wire 32 is attached to an attachment portion 33 fixed to the upper surface of the control device 4. A stopper 34 (blocking means) projecting rearward is provided on the rear surface of the control device 4, and when the control device 4 is raised to a predetermined position, as shown in FIG. 5 to prevent the control device 4 from rising.
[0028]
Further, L-shaped fixing brackets 35 (fixing means) are attached to both side surfaces of the control device 4 (see FIG. 10), and are provided on each bracket 35 when the control device 4 reaches a predetermined position. The control device 4 can be fixed by tightening a screw hole (not shown) provided in the machine room beam 5 through a screw 36 through a through hole (not shown).
[0029]
Next, a procedure for raising the control device 4 according to the present embodiment will be described with reference to the flowchart in FIG.
[0030]
First, the handle 8 is turned to move the step 8 having the opening 24 to a predetermined position (step # 10). Next, the lid 25 is removed to open the opening 24 (Step # 20). Next, the connecting tool 26 is attached to the connecting shaft 9 through the opening 24 (Step # 30). Next, the connecting tool 26 and the control device 4 are connected by the wire 16, and the wire 16 is stretched so as to engage with the guide pulleys 15, 15 (step # 40). Then, the handle 13 of the driving device 3 is manually turned in the direction of the arrow in FIG. .. Are moved in the direction of the arrow in FIG. 8 (step # 50). Accordingly, the wire 16 pulls the control device 4 upward, so that the control device 4 moves up along the guide rails 6,6.
[0031]
Then, when the control device 4 reaches the predetermined position, as shown in FIG. 9, the stopper 34 comes into contact with the upper machine room beam 5 to prevent the control device 4 from rising. Further, the gear fixing lever 29 is rotated by being pulled by the transmission wire 32 and abuts on the outer peripheral portion of the ratchet wheel 28 to prevent the ratchet wheel 28 from rotating counterclockwise. This prevents the handle 13 from rotating in the direction of the arrow. Then, in this state, the control device 4 is fixed by screwing the fixing brackets 35, 35 to the machine room beam 5.
[0032]
When the maintenance work is completed, the screws 36 fixing the fixing brackets 35 and 35 to the machine room beam 5 are removed, and the control device 4 is returned to the position before being pulled up by rotating the control device 4 by its own weight or by manually turning the handle 13. Let it.
[0033]
Also in the present embodiment, the same effect as that described in the first embodiment can be obtained. Further, since the control device 4 does not rise above the predetermined position, it is possible to prevent an accident caused by the control device 4 being pulled up too much. Further, since the control device 4 is fixed at a predetermined position, the control device 4 does not drop during the operation and is safe.
[0034]
Next, a fourth embodiment of the present invention will be described. 12 and 13 are configuration diagrams of a control circuit used in the fourth embodiment of the present invention, and FIG. 14 is an enlarged perspective view of a main part of the fourth embodiment.
[0035]
This embodiment has a configuration in which the control circuit (electric circuit) shown in FIGS. 12 and 13 and the limit switch 37 (detection means) shown in FIG. 14 are added to the third embodiment. The limit switch 37 is attached to a support member (not shown), and is fixed so as not to move even when the gear fixing lever 29 abuts.
[0036]
In FIG. 12, reference numeral 38 denotes an escalator operation switch which can selectively apply a voltage to either the electromagnetic contactor (U) 39 or the electromagnetic contactor (D) 40. The electromagnetic contact machine (U) 39 or the electromagnetic contact machine (D) 40 forms a self-holding circuit, a voltage is applied to the electric motor 11 (see FIG. 11), and the steps 8 rise or fall.
[0037]
When the control device 4 moves up to a predetermined position and the gear fixing lever 29 rotates in the direction of the arrow in FIG. 14, the limit switch 37 comes into contact with the limit switch 37 and operates. As a result, the contact 37a on the control circuit is opened, and the voltage of the electromagnetic contactor (U) 39 or the electromagnetic contactor (D) 40 is cut off. Further, the contact 39a or the contact 40a is opened, and the electric motor 11 stops.
[0038]
In the present embodiment, it is not necessary for the operator to turn the handle 13 of the driving device 3, so that the control device 4 can be more easily pulled up. In addition, since the control device 4 is detected by the limit switch 37 so as not to be pulled up to a predetermined position or more and the control device 4 is automatically stopped, the safety is high.
[0039]
【The invention's effect】
As described above, according to the present invention, a control device having a large weight can be easily pulled up. Therefore, the space in the narrow machine room can be effectively used.
[Brief description of the drawings]
FIG. 1 is a plan view of an escalator according to a first embodiment of the present invention.
FIG. 2 is a side view of FIG.
FIG. 3 is a plan view of the second embodiment.
FIG. 4 is a side view of FIG. 3;
FIG. 5 is an enlarged perspective view of a main part of FIG. 3;
FIG. 6 is a sectional view of a main part of FIG. 5;
FIG. 7 is a plan view of a third embodiment.
FIG. 8 is a side view of FIG. 7;
FIG. 9 is a side view of FIG. 7;
FIG. 10 is an enlarged perspective view of a main part of the third embodiment.
FIG. 11 is a flowchart showing a pull-up procedure of the control device according to the third embodiment.
FIG. 12 is a configuration diagram of a control circuit used in a fourth embodiment of the present invention.
FIG. 13 is a configuration diagram of a control circuit used in a fourth embodiment of the present invention.
FIG. 14 is an enlarged perspective view of a main part of the fourth embodiment.
[Explanation of symbols]
2 Machine room 3 Drive unit 4 Control unit 8 Step 15 Guide pulley (guide unit)
16 wires

Claims (9)

A number of steps connected so as to circulate along an endless path;
An electric motor that can rotate the output shaft manually while driving the steps,
A machine room that houses the electric motor,
A control device provided in the machine room,
Guide means for guiding a wire connecting the step or a moving body that moves in synchronization with the step and the control device so that the control device moves upward or downward with the movement of the step or the moving body. When,
A man conveyor comprising: A number of steps connected so as to circulate along an endless path;
An electric motor for driving the steps,
An electric circuit that applies a voltage to the electric motor to rotate an output shaft,
A machine room that houses the electric motor,
A control device provided in the machine room,
Guide means for guiding a wire connecting the step or a moving body that moves in synchronization with the step and the control device so that the control device moves upward or downward with the movement of the step or the moving body. When,
A man conveyor comprising: The man conveyor according to claim 1 or 2, wherein the moving body is a connecting shaft or a moving handrail connecting the drive step and the step to transmit the power of the electric motor to the step. 4. The man conveyor according to claim 3, wherein an opening is provided in at least one of the plurality of steps, and the wire can be connected to the connection shaft through the opening. The man conveyor according to any one of claims 1 to 4, further comprising blocking means for preventing the control device from rising when the control device is raised to a predetermined position. 6. A man conveyor according to claim 5, wherein said blocking means prevents rotation of an output shaft of said electric motor. 7. The man conveyor according to claim 1, further comprising fixing means for fixing the control device that has reached a predetermined position at the predetermined position. 4. A detecting device for detecting that the control device has risen to a predetermined position or its vicinity, and an electric circuit for stopping the electric motor based on a detection signal from the detecting device. The man conveyor according to any one of 4, 5, 6, and 7. 5. The method for lifting a control device of a man conveyor according to claim 4, wherein the step having the opening is moved to a predetermined position, and the connection shaft and the control device are connected to each other by a wire through the opening. A method of pulling up the control device of the man conveyor, wherein the wire is stretched so as to be guided by the guide means, and the output shaft of the electric motor is rotated to raise the control device.

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