CN111148713B

CN111148713B - Step lifting auxiliary device of passenger conveyor

Info

Publication number: CN111148713B
Application number: CN201780095026.0A
Authority: CN
Inventors: 山口文江
Original assignee: Mitsubishi Electric Building Techno Service Co Ltd
Current assignee: Mitsubishi Electric Building Solutions Corp
Priority date: 2017-09-27
Filing date: 2017-09-27
Publication date: 2021-06-25
Anticipated expiration: 2037-09-27
Also published as: JP6433624B1; WO2019064393A1; JPWO2019064393A1; CN111148713A

Abstract

A step lift assist device (80) is provided with: an operation lever body (82) having an accessory mounting part (92) and an operation part (90) which are inclined at a fulcrum part (94) at a predetermined obtuse angle; a support table (84) which rotatably supports a fulcrum section (94) of the operation lever body (82); and a step-up assist tool (86) held by the assist tool mounting portion (92), the step-up assist tool (86) being a hook body having: a hanger shaft portion, one end of which is held by the auxiliary mounting portion (92), the shaft diameter of which is smaller than the inner diameter of the hook hanging hole (100); and a pedal hooking portion bent at the other end of the hanger shaft portion at a right angle with respect to the axial direction of the hanger shaft portion.

Description

Step lifting auxiliary device of passenger conveyor

Technical Field

The present invention relates to a step lifting assist device for a passenger conveyor, and more particularly, to a step lifting assist device for a passenger conveyor for lifting a step at a landing to confirm a gap between comb teeth and a cleat (clear).

Background

An example of the passenger conveyor is an escalator that transports a user by riding on a plurality of steps that move between an entrance of an upper floor and an entrance of a lower floor of a building. In addition, moving walkways and the like are passenger conveyors. A step in a passenger conveyor is a part in which a tread on which a foot is placed by a passenger and a riser that deals with kicking out are integrated by a frame. When a space in which a plurality of steps move is referred to as a movement path, the steps are driven by a drive chain hung on a step shaft on which a drive roller is provided, and the drive roller moves along a drive rail of a truss provided at a lower portion of the movement path.

In order to prevent slipping, etc., the tread plate of the step is provided with a plurality of cleats extending in the traveling direction in which the step moves, and comb plates having a plurality of comb teeth called comb teeth are arranged at the entrance of the passenger conveyor, respectively, to comb grooves between the plurality of cleats. Since the comb teeth may be damaged when they contact the cleat, the pressing plate of the driving roller is provided opposite to the driving rail so that the step is not unnecessarily lifted. In the maintenance inspection of the passenger conveyor, for example, whether or not a predetermined gap is secured is checked in a state where the step is lifted to a maximum position where the step can be lifted up in the structure.

Patent document 1 discloses, as a passenger conveyor entrance clearance measuring instrument, a configuration in which a hole into which the measuring instrument can be inserted is provided in one of a plurality of comb plates, and the length from the upper surface of a cleat of a step plate to the upper surface of the comb plate is measured according to the length of the measuring instrument protruding from the hole. Thus, the operation of lifting up the step until the drive roller comes into contact with the pressing plate with both hands without holding the measuring instrument by hand is described.

As a related art of the present application, patent document 2 describes that in order to attach and detach the step shaft to and from the step, a wrench hole capable of rotating a fastening bolt that fastens a fixed member and a movable member sandwiching the step shaft from the step side is provided in the step.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2012-166882

Patent document 2: japanese patent laid-open publication No. 2011-

Disclosure of Invention

Problems to be solved by the invention

Since the drive chain circulating along the movement path is hung on the step shaft of the step, the maintenance worker needs to bear a considerable burden in order to lift the step. Therefore, a step lift assistance device for a passenger conveyor that reduces the load on maintenance workers is desired.

Means for solving the problems

The present application provides a passenger conveyor step lift assist device for a passenger conveyor provided with a hook hole at a predetermined position of a tread plate of a step of the passenger conveyor, wherein the passenger conveyor step lift assist device includes: an operation lever body having an accessory mounting portion and an operation portion inclined at a fulcrum portion at a predetermined obtuse angle; a support table for rotatably supporting the fulcrum portion of the operation lever body; and a step lifting auxiliary tool which is fixedly held by the mounting connection part, wherein when the side opposite to the fulcrum side in the auxiliary tool mounting part of the operation lever body is set as the other side, the mounting connection part is rotatably supported by the end part of the other side of the auxiliary tool mounting part, the step lifting auxiliary tool is a hook body, and the hook body comprises: a hanging shaft part, one axial end of which is fixedly kept on the mounting connection part, and the shaft diameter of the hanging shaft part is smaller than the inner diameter of the hook hanging hole; and a pedal hooking part bent at the other end of the spindle part in the axial direction at a right angle to the spindle part in the axial direction and having a predetermined length longer than an inner diameter of the hooking hole, the predetermined length of the pedal hooking part being set according to a rotation angle of the mounting connection part and a groove thickness of the cleat, the pedal hooking part being capable of passing through the hooking hole when the mounting connection part rotatably supported at the other end of the accessory mounting part is rotated to incline the pedal.

According to the above configuration, the step lifting aid hook body can be inserted into the hook hole of the step, and the step hook portion can be hooked to the back surface of the step. The hook is held by the accessory mounting portion of the operation lever body, so that the step can be lifted by operating the operation portion of the operation lever body with one hand. The operation lever body lifts the stair lifting aid by the lever principle, so that only light load is needed, and the load of maintenance operators can be reduced.

In the step lift assisting device for a passenger conveyor according to the present invention, it is preferable that the step shaft supporting portion that rotatably supports the step shaft in the step of the passenger conveyor includes: a fixing member fixed to the step; a movable member that is opposed to the fixed member and is openable and closable with respect to the fixed member; and a fastening bolt for clamping the step shaft by making the fixed member and the movable member face each other to rotatably support the step shaft, wherein the hooking hole is a wrench hole provided in advance in the step plate for rotating the fastening bolt from the upper surface side of the step plate.

According to the above configuration, since the wrench hole provided in advance in the pedal can be used as the hook hole, it is not necessary to provide a hook hole in the pedal.

In the step lift assistance device for a passenger conveyor according to the present application, it is preferable that the support base is provided with a cushion member on a rear surface thereof, the cushion member being disposed on an upper surface of a comb plate of the passenger conveyor.

According to the above configuration, even if the arrangement position of the support portion of the operation lever body is set on the comb plate, the comb plate is not damaged.

Effects of the invention

According to the step lift assisting device for a passenger conveyor having the above-described configuration, the load on the maintenance worker can be reduced.

Drawings

Fig. 1 is an overall configuration diagram of an escalator using a step-up assist device of a passenger conveyor according to an embodiment.

Fig. 2 is an enlarged view of the upper machine room in fig. 1.

Fig. 3 is a diagram showing a maintenance operation using the step lift assistance device of the passenger conveyor according to the embodiment.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is a sectional view taken along line V-V in fig. 3.

Fig. 6a is a cross-sectional view taken along the cleat groove on the widthwise right side of the cleat gripped by the step-up assist in fig. 3.

Fig. 6B is an enlarged view of the portion B of fig. 6 a.

Fig. 7 is a view showing a step shaft support portion in a step of an escalator using a step lift assistance device of a passenger conveyor according to an embodiment.

Fig. 8 is a view showing an operation of inserting a wrench from a wrench hole and removing a fastening bolt of the step shaft support portion as a reference example of a method of using the wrench hole provided in the step panel in fig. 7.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the drawings. Hereinafter, the escalator will be described as a passenger conveyor, but this is an example for explanation and may be a passenger conveyor such as a moving sidewalk. The shape, size, material, and the like described below are illustrative examples, and can be appropriately changed in accordance with the specification and the like of the step-up assist device of the passenger conveyor. In the following, the same elements are denoted by the same reference numerals throughout the drawings, and redundant description thereof will be omitted.

Fig. 1 is a diagram showing the structure of an escalator 10 as a passenger conveyor using a step-up assist device 80 of the passenger conveyor. Hereinafter, unless otherwise specified, the step lift assisting device 80 of the passenger conveyor is simply referred to as the step lift assisting device 80.

The escalator 10 is an elevating and transporting device for transporting a user by riding on a plurality of steps 20 moving between an entrance 14 of an upper floor and an entrance 16 of a lower floor of a building 12. Fig. 1 shows a traveling direction, an up-down direction, and a width direction. The traveling direction is a direction in which the steps 20 move and travel, and when the traveling direction is divided into two sides, a direction toward the upper floor is referred to as one side, and a direction toward the lower floor is referred to as the other side. The up-down direction is a direction that distinguishes between an upper side and a lower side with respect to the building 12. The width direction is a direction that is divided into left and right with respect to the moving path 40, and when the entrance 14 of the upper floor is viewed from the entrance 16 of the lower floor, the right direction is a direction of the right side, and the left direction is a direction of the left side.

In the escalator 10, in the moving path 40 on which the steps 20 move while connecting the upper and lower floors, which is one side on which the user rides, the balustrade 42 and the moving handrail 44 are disposed on both sides, and the truss 46 is provided on the back side of the moving path 40, that is, on the inner side of the structure of the building 12.

The truss 46 is provided inside the structure of the building 12 so as to extend between the upper and lower floors, and is a space in which a moving mechanism for the steps 20, a moving mechanism for the handrail 44, and the like are arranged. The truss 46 is composed of an upper floor side horizontal portion, a lower floor side horizontal portion, and an inclined portion connecting these portions. An upper machine room 50 is provided in the horizontal portion on the upper floor side, and a drive motor 52 and a drive sprocket 54 driven by the drive motor 52 are arranged. A lower machine room 56 is provided in the horizontal part on the lower floor side, and a driven sprocket 58 is disposed. A step chain 60 that spans between the drive sprocket 54 and the driven sprocket 58 is disposed on the inclined portion. The step chain 60 is mounted on the step shaft 28 of each step 20, and drive rollers 30 (see fig. 2) are provided at both ends of the step shaft 28 of each step 20, and the drive rollers 30 roll on drive rails 62 disposed on the truss 46.

Fig. 2 is a diagram showing a plurality of steps 20 in the upper machine room 50. In fig. 2, illustration related to the drive motor 52 is omitted.

The steps 20 are also called steps, and are moving steps for user transportation, in which a plurality of step chains 60 are attached in an endless loop shape. The steps 20 are integral parts of a tread 22 for a user to place a foot and a riser 24 corresponding to the kick-out by a frame 26. The step shaft 28 is a shaft rotatably supported by the frame 26 and connected to the step chain 60, and a drive roller 30 is attached to a tip end protruding from the step chain 60. The drive roller 30 is provided on one side of the steps 20 in the traveling direction, and the driven roller 32 is provided on the other side of the steps 20.

In the upper machine room 50, the step chain 60 meshes with the teeth portion of the outer periphery of the drive sprocket 54. Since the step chain 60 is moved and driven by the rotational driving force of the driving sprocket 54, the step chain 60 is rotationally driven around the rotational axis of the driving sprocket 54 in the upper machine room 50, and the traveling direction is reversed. Accordingly, the normal direction of the tread plates 22 of the plurality of steps 20 connected to the step chain 60 via the step shaft 28 is also reversed in the upper machine room 50. The drive rail 62 for guiding the drive roller 30 is disposed above the drive sprocket 54 to support the drive roller 30 from below, and is reversed to become a drive rail 63 for supporting the drive roller 30 from above below the drive sprocket 54. In the guide of the driven roller 32, a driven rail 64 that supports the driven roller 32 from below and a driven rail 65 that supports the driven roller 32 from above are arranged in part in an overlapping manner in the inversion region of the drive sprocket 54.

The pressing plate 66 shown in fig. 2 is a plate member disposed to face the driving rail 62 so that the step 20 is not unnecessarily lifted upward. The pressing plate 66 is disposed above the driving roller 30 with a predetermined gap.

Fig. 3 is a perspective view of the entrance 14 of the upper floor as viewed from above. The tread plates 22 of the steps 20 are provided with a plurality of cleats 70 extending in the traveling direction for the purpose of preventing slipping of the feet of the user and the like. Since the antislip strip 70 is a vertical wall-like projection having grooves on both sides, when the step 20 is lifted up to a necessary extent, it may interfere with the comb teeth 74 at the tip of the comb plate 72 of the entrance 14 disposed on the upper floor. The pressing plate 66 is provided to prevent the antislip strips 70 of the pedals 22 at the entrance 14 and the exit 16 from interfering with the comb teeth 74 of the comb plate 72. The cleat 70 is provided in plural numbers over the entire width direction of the step plate 22, and similarly, the comb teeth 74 are provided in plural numbers over the entire width direction of the comb plate 72, but only a few of them are shown in fig. 3.

Fig. 4 is an enlarged view of a portion a of fig. 3. Fig. 5 is a sectional view taken along line V-V of fig. 4. The arrangement pitch P1 in the width direction of the plurality of cleats 70 of the pedal 22 is the same as the arrangement pitch P2 in the width direction of the comb teeth 74 of the comb plate 72. The cleat 70 has a height H0 and a width W1, and is a standing wall portion standing from the upper surface of the pedal 22, and a cleat groove 71 having a groove width W2 is provided between adjacent standing wall portions. Therefore, P1 ═ W1+ W2. The comb teeth 74 are comb teeth arranged at the other end of the comb plate 72 so as to comb the grooves between the plurality of cleats 70. The steps 20 move at a prescribed traveling speed, and thus the cleats 70 pass between the comb teeth of the comb teeth 74 at a prescribed speed. The comb teeth 74 are shaped not to interfere with the skid strips 70 during the running of the steps 20. In the example of fig. 4 and 5, the gaps between the comb teeth 74 and the cleat 70 are made uniform in the width direction and the vertical direction. In fig. 5, the gap S1 is the distance between the bottom of the cleat groove 71 of the pedal 22 and the bottom of the comb 74. The gap S2 is the spacing between the top surface of the cleats 70 of the tread plate 22 and the top side of the channel of the comb 74. Fig. 5 shows an example of S1 ═ S2 ═ H0/2. In this state, the comb teeth 74 do not contact the antislip strip 70 in the up-down direction.

Examples include P1 ═ P2, W1, W2, and H0, with W1 of about 2.5mm, W2 of about 7.5mm, P1 ═ P2 of about 10mm, H0 of about 12mm, and S1 ═ S2 ═ H0/2 of about 6 mm. This is an example for explanation, and the clearance between the comb teeth 74 and the antislip strip 70 can be appropriately set according to the specification of the escalator 10.

When the steps 20 are unnecessarily lifted during running, both S1 and S2 become smaller than (H0/2), so that the comb teeth 74 and the cleats 70 may possibly come into contact in the up-down direction. The pressing plate 66 depicted in fig. 3 restricts the upward movement of the driving roller 30 so that the steps 20 are not unnecessarily lifted up during traveling. When the pressing plate 66 is worn or foreign matter adheres between the pressing plate 66 and the driving roller 30, the step 20 is unnecessarily lifted during traveling, and the comb teeth 74 and the cleat 70 may contact each other in the vertical direction.

Returning again to fig. 3, fig. 3 shows a case of maintenance work for checking the gaps S1, S2 between the comb teeth 74 and the cleats 70 at the entrance 14 of the upper floor. When a predetermined periodic inspection is performed in the escalator 10, maintenance work for inspecting the gaps S1 and S2 is performed on the entrance 14 of the upper floor and the entrance 16 of the lower floor. Since the contents of the maintenance work for inspecting the gaps S1 and S2 are substantially the same in both the

landing ports

14 and 16, the maintenance work for inspecting the gaps S1 and S2 in the landing port 14 will be described below.

The entrance 14 is a region near the end of the arrangement of the balustrades 42 on the upper floor, and in fig. 3,

inner decks

48 and 49 for supporting the balustrades 42 on the left and right sides of the moving passage 40 are shown. The landing entrance 14 is provided with a comb plate 72 and a landing plate 76, and the front side thereof is the floor of the upper floor. The maintenance operator 8 operates the step lift assist device 80 with the right hand in a knee kneeling position on the landing plate 76, etc., to lift the steps 20 to the structural lift limit. Then, the clearances S1, S2 are measured using the feeler gauge 78 held by the left hand. Since the lifting limit of the step 20 is a case where the driving roller 30 of the step 20 abuts against the pressing plate 66, the step lift assisting device 80 assists the operation of lifting the step 20 until the driving roller 30 contacts the pressing plate 66.

The lift assist device 80 includes an operating lever body 82, a support platform 84, and a lift assist 86. The operation lever body 82 is a lever body of a plate material bent at an obtuse angle. The support table 84 is a support member that is placed on the upper surface of the comb plate 72 and supports the operation lever body 82 as a lever body. The step lifting aid 86 is a hook body that lifts the step 20 by a hook hole 100 provided in the step plate 22.

Fig. 6a is a cross-sectional view taken along line VI-VI of the widthwise right cleat groove 71 in the cleat 70 gripped by the step-up assistor 86 in fig. 3. Fig. 6B is an enlarged view of B in fig. 6 a. In fig. 6a, the steps 20 including the anti-skid groove 71, the comb plate 72, the comb teeth 74, the landing plate 76, the support table 84, the operation lever body 82, and the step lifting aid 86 are included, and the relationship therebetween is shown.

The operation lever body 82 is a plate member having an operation portion 90 on one side and an accessory mounting portion 92 on the other side, and the operation portion 90 and the accessory mounting portion 92 are inclined at a predetermined obtuse angle θ with each other at a fulcrum portion 94. The obtuse angle θ is about 140 degrees, for example. This is an example for explanation, and can be changed as appropriate according to the specification of the lift assist device 80.

Operation unit 90 has a plate width W0 and a thickness t0 that maintenance worker 8 can easily hold with his or her hand. By setting W0 > t0, the rigidity against bending in the longitudinal direction of operation portion 90 can be improved. The length of the operating portion 90 in the longitudinal direction is longer than the length of the accessory mounting portion 92 in the longitudinal direction, and by appropriately setting the position where the maintenance worker 8 grips the operating portion 90 and applies the operating force F, a force that increases the operating force F by the principle of leverage is generated at the tip of the accessory mounting portion 92.

The board width and thickness of the accessory mounting part 92 may be the same as the operating part 90. An attachment connection portion 98 is provided at the other end of the accessory attachment portion 92. The attachment connection portion 98 has a rotation hole supported to be rotatable about a shaft 97 provided at the other end of the accessory attachment portion 92. The accessory mounting portion 92 may be provided with a rotation hole, and the mounting connection portion 98 may be provided with a shaft 97 rotatably supported by the rotation hole. The step lifting aid 86 is fixedly held at an end of the mounting connection portion 98 opposite to the shaft 97.

Fig. 6b is a detailed view of the stair lift aid 86. The step lifting aid 86 is a hook body that lifts the step 20 by a hook hole 100 provided at a predetermined position of the step plate 22 of the step 20. The step lifting aid 86 includes: a hanger shaft portion 112 whose one end is held by the accessory mounting portion 92 and whose shaft diameter D0 is smaller than the inner diameter D0 of the hook hole 100; and a pedal hooking portion 114 bent at the other end of the hanger shaft portion 112 at a right angle to the axial direction of the hanger shaft portion 112. The length L0 of the pedal hook portion 114 is set to a size slightly larger than the inner diameter D0 of the hook hole 100. The slightly larger inner diameter D0 means the extent to which the inclined L0 can pass through D0 when the pedal hooking portion 114 is appropriately inclined with respect to the pedal 22 by rotating the attachment connecting portion 98, to which the step-up assist 86 is fixedly held, about the shaft 97 of the assist attachment portion 92. Therefore, L0 is set in consideration of D0, the thickness of the bottom surface of the cleat groove 71 of the pedal 22, and the rotatable angle of the attachment connecting portion 98.

Returning to fig. 6a, when the operation force F indicated by an arrow is applied to the operation lever body 82, the tip of the accessory mounting portion 92 moves in an arc indicated by the arrow around the fulcrum portion 94 as a rotation center. Since the attachment connection portion 98 is rotatably supported by the shaft 97 of the attachment mounting portion 92, the step-up assist 86 as a hook moves in parallel with the vertical direction as indicated by the hollow arrow.

The operation lever body 82 is formed by forming a plate material of a metal material having sufficient strength against the operation force F in the arrow direction shown in fig. 6 into a predetermined shape.

The support base 84 is a support member that rotatably supports the fulcrum portion 94 of the operation lever body 82, and includes a base 102 and a support column 104. The support column 104 has a rotation hole rotatably supported by a fulcrum shaft provided at the fulcrum portion 94 of the operation lever body 82. Alternatively, the operation lever body 82 may be provided with a rotation hole, and the support column 104 may be provided with a shaft rotatably supported by the rotation hole. The base 102 is a portion disposed on the upper surface of the comb plate 72, and a cushion member 106 is provided on the back surface facing the upper surface of the comb plate 72. As the buffer member 106, a rubber plate, a rubber resin plate, or the like having appropriate elasticity can be used. By using the cushion member 106, when the operation force F is applied to the operation lever body 82, the support reaction force received by the support base 84 is alleviated, and the comb plate 72 is prevented from being damaged.

The hooking hole 100 is provided at a predetermined position in the step 22 of the step 20. The prescribed position is a position suitable for measuring the clearance between the comb teeth 74 and the cleat 70. The measurement of the gap between the comb teeth 74 and the antislip strip 70 is performed in a state where the step 20 is lifted up to the maximum position where the step 20 can be lifted up structurally, which is generated when the driving roller 30 abuts against the pressing plate 66 provided above the driving roller 30. Therefore, the hooking hole 100 can be in the vicinity of the position where the driving roller 30 is arranged in the width direction of the pedal 22. Since the driving rollers 30 are disposed at both ends of the step shaft 28, the hooking holes 100 may be provided near the positions where the two driving rollers 30 are disposed, respectively.

There is an escalator in which a trigger hole 101 has been provided on a step 22, depending on the model of the escalator 10. The wrench hole 101 is provided for detaching the step shaft 28 rotatably supported by the step 20 from the upper surface side of the step plate 22. The trigger hole 101 is used for maintenance work around the step 20 of the escalator 10, but the trigger hole 101 may be used as a hook hole 100 for lifting the step in order to measure the gap between the comb teeth 74 and the antislip strip 70.

Fig. 7 is a view showing a configuration of a step shaft support portion 120 that rotatably supports the step shaft 28 in the step 20. The step shaft support portion 120 includes: a clamp support 122 provided integrally with the frame 26; a fixing member 124 provided on the clamp support table 122; and a movable member 128 that faces the fixed member 124 and can be opened and closed with respect to the fixed member 124. The movable member 128 is rotatable around a rotary shaft 126 provided on the clamp support base 122, thereby forming a clamp body integrated with the fixed member 124, and forming a step shaft support space having a circular cross section. Alternatively, the step shaft 28 can be disengaged in a state of being opened with respect to the fixing member 124. The step shaft support portion 120 includes a fastening bolt 130 that fastens the fixed member 124 and the movable member 128 at a position opposite to the rotation shaft 126 across the step shaft 28.

The wrench hole 101 is a hole provided in the pedal 22 for turning the fastening bolt 130 from the upper surface side of the pedal 22. Fig. 8 is a view showing a state in which the movable member 128 is detached from the fixed member 124 by inserting the wrench 132 into the wrench hole 101 from the upper surface side of the pedal 22 and rotating the head of the fastening bolt 130. In the escalator 10, the step shaft 28 is attached to the step chain 60, and therefore the step shaft 28 is substantially fixed in position with respect to the truss 46. When the movable member 128 is detached from the fixed member 124 by rotating the fastening bolt 130, the step chain 60 can be opened upward with respect to the step chain 22.

The step shaft support portions 120 are provided at both ends of the step shaft 28 in the axial direction, and drive rollers 30 are attached to the respective vicinities thereof. Therefore, the trigger hole 101 is provided near the position where the drive roller 30 is disposed in the width direction of the step plate 22, and therefore can be used as the hook hole 100 for lifting the step for measuring the gap between the comb teeth 74 and the cleat 70. By using the wrench hole 101 provided in advance in the step plate 22 for detaching the step shaft 28 from the step plate 22 as the hooking hole 100, it is not necessary to provide a special hooking hole 100 for measuring the gap between the comb teeth 74 and the cleat 70.

The trigger hole 101 is an example of the hook hole 100, and a hole already provided in the step 22 other than the trigger hole 101 may be the hook hole 100 as long as it is a position suitable for the step lifting work for measuring the gap between the comb teeth 74 and the cleat 70.

Industrial applicability

The step lifting auxiliary device of the passenger conveyor can be used for maintenance operation of lifting the step for confirming the clearance between the comb teeth and the antislip strip at the landing part of the passenger conveyor such as an escalator.

Description of the reference symbols

8: maintenance workers; 10: escalators (passenger conveyors); 12: a building; 14. 16: a lifting port; 20: a step; 22: a pedal; 24: a vertical plate; 26: a frame; 28: a step shaft; 30: a drive roller; 32: a driven roller; 40: a movement path; 42: a railing; 44: moving the armrest; 46: a truss; 48. 49: an inner side cover plate; 50: an upper machine room; 52: a drive motor; 54: a drive sprocket; 56: a lower machine room; 58: a driven sprocket; 60: a step chain; 62. 63: a drive rail; 64. 65: a driven rail; 66: a pressing plate; 70: anti-slip strips; 71: an anti-slip strip groove; 72: a comb plate; 74: comb teeth; 76: a landing plate; 78: a feeler gauge; 80: a step lift assist device (of a passenger conveyor); 82: an operation lever body; 84: a support table; 86: a step lifting auxiliary tool; 90: an operation section; 92: an accessory mounting part; 94: a fulcrum section; 97: a shaft; 98: mounting the connecting part; 100: a hooking hole; 101: a wrench hole; 102: a base; 104: a support column; 106: a buffer member; 112: a hanger shaft portion; 114: a pedal hook portion; 120: a step shaft support; 122: clamping the supporting table; 124: a fixing member; 126: a rotating shaft; 128: a movable member; 130: fastening a bolt; 132: a wrench.

Claims

1. A step lifting assist device for a passenger conveyor, the passenger conveyor having a hooking hole provided at a predetermined position of a step of the passenger conveyor, the step lifting assist device being used in the passenger conveyor to lift a step up to a structural lifting limit without detaching the step from a step shaft in order to confirm a vertical gap between comb teeth of a comb plate provided at a landing port and a cleat of the step at the landing port of the passenger conveyor, wherein the step lifting assist device comprises:

an operation lever body having an accessory mounting portion and an operation portion inclined at a fulcrum portion at a predetermined obtuse angle;

a support table that rotatably supports the fulcrum portion of the operation lever body; and

a step lifting aid fixedly held by a mounting connection portion, the mounting connection portion being rotatably supported by an end portion of the aid mounting portion on the other side when the other side is set to be opposite to the fulcrum side in the aid mounting portion of the operation lever body,

the ladder lifting aid is a hook body having:

a hanging shaft portion having one axial end fixedly held by the mounting connection portion, the hanging shaft portion having a shaft diameter smaller than an inner diameter of the hook hanging hole; and

a pedal hooking portion bent at the other end in the axial direction of the hanger shaft portion at a right angle to the axial direction of the hanger shaft portion,

the length of the pedal hooking part is set according to the inner diameter of the hooking hole, the rotation angle of the installation connecting part and the groove thickness of the antislip strip: the pedal hooking portion is larger than the inner diameter and is capable of passing through the hooking hole when the pedal hooking portion is inclined with respect to the pedal by rotating the attachment connecting portion rotatably supported by the other end portion of the accessory attachment portion.

2. The step lift assistance device of a passenger conveyor of claim 1,

a step shaft support portion that rotatably supports a step shaft in the steps of the passenger conveyor, the step shaft support portion including:

a fixing member fixed to the step;

a movable member that faces the fixed member and can be opened and closed with respect to the fixed member; and

a fastening bolt for holding the step shaft by opposing the fixed member to the movable member and rotatably supporting the step shaft,

the hooking hole is a wrench hole provided in advance in the step plate to rotate the fastening bolt from the upper surface side of the step plate.

3. The step lift assistance device of a passenger conveyor of claim 1,

the back of the supporting platform is provided with a buffer piece which is used for being configured on the upper surface of the comb plate of the passenger conveyor.