JP2017014006A - Passenger conveyor specialized tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passenger conveyor specialized tool in which lowering of workability of screw stopper detaching is suppressed as far as possible, while workability of floor plate lifting is improved more than the conventional.SOLUTION: A passenger conveyor specialized tool 10 includes a first bar part 12, and a second bar part 14 and a third bar part 16 which are bifurcated as a Y-letter shape from one end part 12A of the first bar part 12. The tip part of the second bar part 14 is formed as a minus driver part 22 which is to be an engagement part engaging with the engagement concave part of a screw stopper, and at the tip part of the third bar part 16, formed is a male screw which is screwed with a female screw part into which the screw stopper is screwed.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a passenger conveyor dedicated tool, and more particularly to a tool used for opening and closing a floor plate in a passenger conveyor.

  In passenger conveyors such as escalators, a machine room is provided from the entrance to the lower part in the vicinity thereof, and a part of the machine room is closed by a floor plate. The floor plate is provided with an internal thread portion for opening and closing the floor plate in the thickness direction. During the use of the passenger conveyor, a male screw having an engagement recess (for example, a minus groove) formed at one end thereof is screwed into it for the purpose of closing the female screw portion. Hereinafter, this male screw is referred to as a “screw plug”.

  When inspecting a device installed in a machine room, it is necessary to open a floor plate that closes the machine room. A general dedicated tool for opening and closing a floor plate is disclosed in FIG. The conventional tool disclosed in Patent Document 1 has a first bar and a second bar extending perpendicularly to the first bar from the longitudinal central portion of the first bar, T-shaped. A male screw portion is formed at one end portion of the first bar, and a tip portion of the second bar is formed in a minus driver.

  The procedure for opening the floor plate using the conventional tool will be described. First, a minus driver is engaged with the minus groove. Using the first bar as a handle, the screw plug is loosened by rotating around the axis of the second bar and removed from the female screw portion.

  Next, the male screw part is screwed into the female screw part from which the screw plug is removed, and the tool is fixed to the floor plate. Then, this time, the second bar is gripped as a handle, and the hand holding the second bar is lifted to lift the floor plate and open the machine room.

Japanese Patent Laid-Open No. 9-193032 JP 2003-171079 A

  However, in the operation of lifting the floor plate, the second bar serving as a handle extends only from one axis to the other side of the axis of the first bar screwed into the floor plate (on the axis of the first bar). On the other hand, since the second bar serving as the handle is biased), the second bar is tilted so that the tip thereof jumps up. For this reason, an excessive force is applied to the wrist holding the second bar, resulting in a decrease in workability.

  In order to improve the workability of lifting the floor plate, it is conceivable to change the positions where the male screw portion and the minus driver are formed. That is, a male screw part is formed at the tip of the second bar. By doing so, the first bar is used as a handle when the floor plate is lifted. At this time, by holding the first bar with the middle finger and the ring finger sandwiching the second bar, the first bar portion extending to both sides from the axial center of the second bar screwed into the floor plate is evenly distributed. Therefore, the above-mentioned unreasonable force caused by the deviation of the handle is reduced.

  However, in the operation of removing the screw plug with a flat-blade screwdriver formed on the first bar, the second bar serving as a handle when rotating about the axis of the first bar is moved from the axis of the first bar. Since it is extended only to one side, its workability is greatly reduced.

  In view of the above-described problems, the present invention provides a special tool for a passenger conveyor that suppresses a decrease in workability of removing screw plugs as much as possible while improving workability of lifting a floor plate as compared with the conventional tool. The purpose is to do.

  In order to achieve the above object, the passenger conveyor dedicated tool according to the present invention is a passenger conveyor in which a female screw portion is provided in the thickness direction, and a screw plug having an engagement recess at one end is screwed into the female screw portion. A passenger conveyor dedicated tool used for opening and closing a floor plate, comprising: a first bar portion; and second and third bar portions that are bifurcated into a Y shape from one end of the first bar portion; And a distal end portion of the second bar portion is formed in an engagement portion engaging with the engagement recess, and a distal end portion of the third bar portion is a male screw that is screwed with the female screw portion. Is formed.

  In addition, the second and third bar portions are bifurcated so that the axial center of the one end portion of the first bar portion and the axial centers of the second and third bar portions form an equiangular interval. It is divided into two.

  Further, the other end portion of the first bar portion opposite to the one end portion is formed into a hook-like portion bent in a hook shape, and the hook-like portion moves in the passenger conveyor. It is used for attaching and detaching handrails.

  According to the passenger conveyor dedicated tool having the above-described configuration, the floor plate is formed in a state in which the male screw formed at the tip of the third bar portion is screwed into the female screw portion provided in the floor plate. In the lifting operation, the first bar portion and the second bar portion, which are divided into two forks from the end opposite to the tip portion of the third bar portion, can be used as handles and lifted by grasping them. . As a result, compared with the conventional tool in which the bar serving as the handle is extended only on one side of the bar on which the female thread portion is formed, the unreasonable burden on the wrist is greatly reduced. The workability of lifting the floor plate is improved compared to the above tool.

  Further, in the work of removing the screw plug by engaging the engagement portion of the second bar portion with the engagement recess of the screw plug and rotating around the second bar portion, The first bar portion and the third bar portion that are divided into two forks from the end opposite to the engagement portion can be rotated as a handle. Thereby, the workability of removing the screw plug is greatly improved as compared with the case where the bar serving as the handle is extended only on one side of the bar on which the engagement portion is formed.

  That is, according to the passenger conveyor dedicated tool according to the present invention, the workability of lifting the floor plate is improved as much as possible while the workability of lifting the floor plate is improved as compared with the conventional tool. it can.

It is a perspective view which shows schematic structure of an example of the escalator used as the use object of the passenger conveyor exclusive tool which concerns on embodiment. (A) is a top view which shows the screw stopper provided in the floor plate of the said escalator, and its vicinity part, (b) is the sectional view on the AA line in (a), (c) is It is a cross-sectional view which shows a part of balustrade which comprises the said escalator. (A) of the said passenger conveyor exclusive tool is a front view, (b) is a left view, (c) is a top view. (A) is a figure which shows the state which engaged the said passenger conveyor exclusive tool with the said screw stopper, (b) is a figure for demonstrating the lifting operation | work of the said floor plate by the said passenger conveyor exclusive tool. . It is a figure for demonstrating the removal | desorption procedure from the guide rail of the moving handrail by the said passenger conveyor exclusive tool. It is a figure for demonstrating the removal | desorption procedure from the guide rail of the moving handrail by the said passenger conveyor exclusive tool.

  Hereinafter, the passenger conveyor exclusive tool 10 which concerns on embodiment is demonstrated, referring drawings. There are escalators and moving sidewalks in passenger conveyors, which are work targets using the passenger conveyor dedicated tool 10 (FIG. 3). Here, escalators will be described as an example.

[Escalator]
As shown in FIG. 1, the escalator 100 includes a plurality of steps 102 connected endlessly and circulated, and balustrades 104 and 106 erected along the traveling path on both sides of the traveling path of the plurality of steps 102. Have Passengers of the escalator 100 get on the tread 102A of the step 102 and are transported from the bottom (downstairs) to the top (upstairs) or from the top to the bottom.

  A comb plate 108 is installed at the entrance of the escalator 100. Further, one or a plurality of (in this example, two) floor plates 110 and 112 are installed adjacent to the comb plate 108. Below the comb plate 108 and the floor plates 110 and 112, there is provided a machine room (not shown) in which various devices for driving the steps 102 are installed. The comb plate 108 is fixed so that it cannot be easily opened. On the other hand, the floor plates 110 and 112 are provided to be openable and closable in order to open the machine room for inspection of the various devices.

  For this opening and closing, nuts 114 (not shown in FIG. 1) are fixed to the floor plates 110 and 112 as female screw portions provided in the thickness direction. Since the fixing mode of the nut 114 is the same in both the floor plates 110 and 112, the fixing mode in the floor plate 110 will be described as a representative.

  2A and 2B, the floor plate 110 has a through hole 110A. As shown in FIG. 2B, the floor plate 110 has a through hole on the back side. A nut 114 is fixed coaxially with the hole 110A. This fixing is, for example, by welding.

  A screw plug 116 is screwed into the nut 114 for the purpose of closing the through hole 110 </ b> A and the nut 114 during use of the escalator 100. The screw plug 116 has, at one end thereof, a minus groove 116A as an engagement recess for engagement with a screwdriver (driver).

  Returning to FIG. 1, the floor plates 110 and 112 are provided with nuts 114 (not shown in FIG. 1) that are screwed with a plurality of (in this example, four) screw plugs 116.

  Next, the balustrades 104 and 106 will be described. Since the balustrade 104 and the balustrade 106 have the same configuration, only the configuration related to the balustrade 104 and the balustrade 104 will be described below.

  The balustrade 104 has a plurality of balustrade panels 118 erected along the traveling path. The balustrade panel 118 of this example is made of glass.

  At the lower part of the balustrade panel 118, an inner deck 120 projecting to the step 102 side and an outer deck 122 projecting to the opposite side of the step 102 are provided. Further, a skirt guard 124 is erected with a gap from the step 102.

  The inner deck 120, the outer deck 122, and the skirt guard 124 are made of, for example, a stainless steel plate. A plurality of inner decks 120, outer decks 122, and skirt guards 124 are arranged along the traveling direction of the step 102.

  The balustrade 104 has a moving handrail 126 that runs around the outer periphery of the balustrade panel 118 at a speed synchronized with the step 102.

  The moving handrail 126 has an endless belt shape, and a substantially half-circular portion appearing in the drawing is guided by a guide rail 128 (FIG. 2C) provided on the peripheral portion of the balustrade panel 118, and the remaining half-circumference The portion travels around while being guided by guide rails (not shown) laid below the lower end portion (not shown) of the balustrade panel 118 and below the inner deck 120. In a section that travels along the upper edge of the balustrade panel 118 (section that the passenger grips), the guide rail 128 (FIG. 2 (c)) guides it to move in the horizontal direction, and then guides it to skew. And again guided in the horizontal direction.

  As shown in FIG. 2C, the guide rail 128 has a guide bracket 130 made of a drawn material of a metal material (for example, stainless steel) having a “W” -shaped cross section. The guide bracket 130 has a groove portion 130A having a U-shaped cross section that opens downward. The guide bracket 130 is fixed to the balustrade panel 118 with a groove 130 </ b> A fitted into the upper edge of the balustrade panel 118 via a grip member 132 made of a rubber sheet. Further, the guide bracket 130 has flange portions 130D and 130E extending in opposite directions from both end portions of the recessed portions 130B and 130C having a U-shaped cross section opened upward on both sides of the groove portion 130A in the cross section.

  The guide rail 128 has slidable contact members 134 and 136 attached to cover most of the flange portions 130D and 130E. The sliding contact members 134 and 136 are made of an extruded material of nylon.

  Here, in the guide rail 128, the flange portions 130D and 130E and the slidable contact members 134 and 136 covering the flange portions 130D and 130E are referred to as flange portions 128A and 128B. In the guide rail 128, the surface indicated by reference numerals 130F and 130G is referred to as a side surface (side surfaces 130F and 130G) (of the guide rail 128). As will be described later, in the guide rail 128, the flange portions 128A and 128B are portions into which both end portions in the width direction of the moving handrail 126 are fitted. Depending on the type of guide rail, the sliding contact member may not be provided, and the flange portion of the guide bracket itself may be a flange portion into which the moving handrail is fitted.

  The moving handrail 126 is made of synthetic rubber or synthetic resin, and has a C shape with a flat cross section. The movable handrail 126 is fitted into the guide rail 128 so that the opening of the C-shaped section faces downward and the inner surfaces of both ends of the C-shaped section surround the left and right flange portions 128A and 128B.

  Between the first end 126A, which is one end of the C-shape of the moving handrail 126, and the side surface 130F of the guide rail 128, there is a gap C1 between the second end 126B, which is the other end, and the side surface 130G. A gap C2 is opened.

[Passenger conveyor dedicated tool]
The passenger conveyor dedicated tool 10 (hereinafter simply referred to as “tool 10”) shown in FIG. 3 is used for opening and closing the floor plates 110 and 112 and for attaching and detaching the movable handrail 116 to and from the guide rail 128 (attachment and removal work). Used.

  The tool 10 is divided into a first bar portion 12 and a forked portion from the first end portion 12A of the first bar portion 12 into a Y shape (in FIG. 3A, it looks like an inverted Y shape). Two bar portions 14 and a third bar portion 16. The first bar portion 12, the second bar portion 14, and the third bar portion 16 are all made of a metal material (for example, a steel material).

  The first bar portion 12 is formed by bending a long and narrow bar material mainly. The first bar portion 12 is formed in a hook-like portion 18 formed by bending a second end portion 12B opposite to the first end portion 12A into a hook shape (substantially L-shaped). Yes. A spherical portion 20 is formed at the tip of the bowl-shaped portion 18.

  The second bar portion 14 and the third bar portion 16 are formed by bending a round bar material into a square shape. The first end 12A and the vicinity thereof are joined to the round bar by fillet welding in a state where the first end 12A is abutted against the outer side of the bent portion.

  In the first bar portion 12, the axis X1 (the axis X1 of the first end 12A portion) of the portion extending from the first end 12A to the bent portion forming the bowl-shaped portion 18 and the second bar portion 14 The round bar is bent into a square shape so that the axial center X2 and the axial center X3 of the third bar portion 16 form an equiangular interval in the front view shown in FIG. The first bar portion 12 is joined to the round bar. The equiangular intervals are not limited to the case where the illustrated angles α, β, and γ are α = β = γ = 120 °, but also include ranges in which α, β, and γ vary within the range of errors that occur in manufacturing the tool 10. Shall be included.

  The axis X1, the axis X2, and the axis X3 are preferably located on the same virtual plane, but may be slightly off the virtual plane. That is, if the first end portion 12A portion of the first bar portion 12, the second bar portion 14, and the third bar portion 16 are in a range including the virtual plane, the axis X1 and the axis X2 , And the axis X3 may not be on the same virtual plane.

  The distal end portion of the second bar portion 14 is formed in the minus driver portion 22 as an engagement portion that engages with the minus groove 116 </ b> A (FIGS. 2A and 2B) of the screw plug 116.

  A male screw 24 that is screwed into the nut 114 (FIG. 2B) is formed at the tip of the third bar portion 16.

[Floor plate opening and closing work]
The opening / closing operation of the floor plates 110, 112 using the tool 10 will be described with reference to FIG.

  First, as shown in FIG. 4A, the tip of the minus driver portion 22 of the second bar portion 14 is engaged with the minus groove 116 </ b> A of the screw plug 116.

  In this state, the tool 10 is rotated in the direction of arrow B around the second bar portion 14 (axis X2 thereof) with the first bar portion 12 and the third bar portion 16 as handles, and the screws The stopper 116 is removed from the nut 114.

  Next, the male screw 24 of the third bar portion 16 is screwed into the nut 114 from which the screw plug 116 has been removed (this work situation is not shown). In this case, the male screw 24 is attached to the nut 114 by rotating the tool 10 about the third bar portion 16 (the axial center X3) using the first bar portion 12 and the second bar portion 14 as handles. It will be screwed together.

  When the male screw 24 is screwed into the nut 114, as shown in FIG. 4B, the first bar portion 12 and the second bar portion 14 are used as handles, and the gripped hand is moved upward. By lifting, the floor plate is lifted to release the machine room (not shown).

  In this case, as shown in the figure, the floor plate 110 is formed by gripping the first bar portion 12 and the second bar portion 14 that serve as handles while sandwiching the third bar portion 16 between the middle finger and the ring finger. Since a force is equally applied to the first bar portion 12 and the second bar portion 14 extending on both sides from the axis X3 of the third bar portion 16 screwed into the nut 114 provided in the The above-mentioned unreasonable force caused by the bias will be reduced. As a result, the workability of lifting the floor plate is improved as compared with the conventional tool.

  Further, in the work of removing the screw plug 116 (FIG. 4A), the first bar portion 12 and the third bar portion 16 serving as the handles are the axis of the second bar portion 14 (center of rotation). Since it extends to both sides from X2), its workability is greatly improved as compared with the case where the structure extends only to one side. In this case, even if compared with the conventional tool in which the entire handle is linear, the workability is hardly lowered.

  As described above, the tool 10 according to the embodiment suppresses a decrease in the workability of removing the screw plug as much as possible while improving the workability of lifting the floor plate as compared with the conventional tool. Yes.

  The work of closing (closing) the machine room (not shown) with the floor plate 110 is the reverse of the work described above. That is, the tool 10 that is screwed onto the nut 114 is grasped, the floor plate 110 is lifted and carried, and the machine room (not shown) is covered. After removing the tool 10 from the nut 114, the screw plug 116 is screwed onto the nut 114. When screwing the screw plug 116 to the nut 114, the minus driver portion 22 is used.

[Moving handrail attachment / detachment work]
A procedure for attaching / detaching the moving handrail 126 to / from the guide rail 128 using the tool 10 will be described with reference to FIGS. 5 and 6. In the attaching / detaching operation of the moving handrail 126, the second bar portion 14 and the third bar portion 16 (FIG. 3) are used as handles. Here, in the moving handrail attaching / detaching operation, the second bar portion 14 and the third bar portion 16 used as handles are collectively referred to as a handle portion 26.

  Here, first, the case where the section where the moving handrail 126 is skewed shown in FIG. An operator who removes and moves the moving handrail 126 performs work while standing on the tread surface 102A of the step 102 when traveling is stopped. The worker first stands on the tread surface 102A of one or two steps 102 located at the upper stage among the plurality of steps 102 in the oblique section.

  An operator (not shown) holds the handle portion 26 of the tool 10 with one hand, attaches the other hand to the hook-shaped portion 18, and moves the hook-shaped portion 18 upward (as shown in FIG. 5A). It moves to the direction of arrow T1, and pushes the spherical part 20 and the front-end | tip part of the bowl-shaped part 18 into the inner side of the moving handrail 126 from the clearance C1 with the spherical part 20 as the head (FIG.5 (b)).

  As a result, the first end 126 </ b> A of the moving handrail 126 is hooked by the hook-shaped portion 18. In this hooked state, the operator pulled the hand holding the handle portion 26 in a substantially horizontal direction (direction of arrow T2) perpendicular to the longitudinal direction of the moving handrail 126 as shown in FIG. Thereafter, as shown in FIG. 5C, while maintaining the pulled state (arrow T3), the tool 10 (the hook-shaped portion 18) is rotated in the direction of the arrow T4, and the entire tool 10 is lifted upward. Then, a part of the moving handrail 126 (the part hooked by the hook-like part 18 and its vicinity) is removed from the flange part 128A of the guide rail 128 (FIG. 5D).

  Next, the entire tool 10 is tilted (rotated) to the lower side of the moving handrail 126 with the tip portion of the bowl-shaped portion 18 as the center, and as shown in FIG. X1 (FIG. 3A) is made substantially parallel to the longitudinal direction of the moving handrail 126.

  With the tip end portion of the hook-shaped portion 18 sandwiched between the moving handrail 126 portion (hereinafter referred to as “detaching portion”) that is detached from the flange portion 128A and the flange portion 128A, the operator By continuing to pull the hand holding the handle portion 26 while descending 102 (FIG. 1) in the direction opposite to the bowl-shaped portion 18 side (the direction of the arrow T5) over the section where the moving handrail 126 is skewed, Starting from the detached portion, the moving handrail 126 is continuously separated from the flange portion 128A for a length corresponding to the oblique section.

  When the moving handrail 126 part detached from one flange part 128A is pressed toward the other flange part 128B (FIG. 2C), the part is detached from the guide rail 128.

  As described above, some of the above-described series of moving handrail attachment / detachment operations include an operation of pulling the hand holding the handle portion 26 of the tool 10 (in the direction of the axis X1 of the first bar portion 12) (FIG. 5B). Arrow T2, (c) arrow T3, and arrow T5 in FIG. 6).

  In this case, the hook-like portion 18 is provided by grasping the second bar portion 14 and the third bar portion 16 that become the handle portion 26 with the middle finger and the ring finger sandwiching the first bar portion 12. In addition, a force is equally applied to the second bar portion 14 and the third bar portion 16 extending on both sides from the axis X1 of the first bar portion 12.

  In addition, since the second bar portion 14 and the third bar portion 16 serving as the handle portion 26 are formed in a square shape, from the index finger of the hand holding the second and third bar portions 14 and 16. Each of the second joints line up in a mountain shape over the little finger. The hand in this case has the same shape as shown in FIG.

  In this regard, a tool disclosed in Patent Document 2 is known as a dedicated tool for attaching and detaching the moving handrail. Unlike the tool 10, the dedicated tool of Patent Document 2 has a hook-like portion like the tool 10, but unlike the tool 10, the handle portion is formed of a straight and long metal rod. The above-described pulling operation using the dedicated tool of Patent Document 2 grips the metal rod and pulls the gripped hand in a direction perpendicular to the axis of the metal rod.

  Regardless of whether the tool 10 or the dedicated tool of Patent Document 2 is used, a large force is required to elastically deform and remove the movable handrail from the guide rail and pull the tool. In this case, the worker puts weight on the tool.

  In this case, the load on the finger is reduced in the tool 10 of the handle portion 16 having a letter-shaped shape, compared to the tool of Patent Document 2 that has a straight handle portion.

  In addition, when attaching the handrail 126 to the guide rail 128 (when attaching), work is performed as follows.

  First, by a manual operation without using the tool 10, the end portion corresponding to the width direction of the flange portion 128B of the guide rail 128 shown in FIG. The second end 126B side end portion) is fitted.

  Next, the posture in which the handle portion 26 of the tool 10 is held with one hand, the distal end portion of the bowl-shaped portion 18 faces upward, and the axis X1 of the first bar portion 12 is substantially parallel to the longitudinal direction of the moving handrail 126. Then, the tip portion is hooked on the first end 126 </ b> A of the moving handrail 126. Twist the tool 10 (rotate about the axis X1) and elastically deform the hooked portion until the hooked first end 126A is located at the tip of the flange portion 128A or outward from it. (Hereinafter, this portion is referred to as “elastic deformation portion”).

  As it is, the hand holding the handle portion 26 is continuously pulled opposite to the first bar portion 12 (the hook-shaped portion 18), and with the opposite hand, the vicinity of the elastic deformation portion is directed toward the flange portion 128A. By pressing, the moving handrail 126 is continuously fitted into the guide rail 128.

  As described above, the tool 10 can be used not only for opening and closing the floor plates 110 and 112 but also for attaching and detaching the movable handrail 126. That is, conventionally, for the opening / closing operation and the attaching / detaching operation, the dedicated tool described in Patent Document 1 (for opening / closing operation) and the exclusive tool described in Patent Document 2 (for attaching / detaching operation) are used. Where a single tool is required, one tool 10 can perform these two operations.

  As mentioned above, although the passenger conveyor exclusive tool which concerns on this invention has been demonstrated based on embodiment, of course, this invention is not restricted to an above-described form, For example, it is good also as the following forms.

  (1) The engagement recess of the screw plug 116 is a minus groove 116A (FIGS. 2A and 2B), and the screw plug 116 is a so-called minus screw. The tip of the part 14 was formed in the minus driver part 22 (FIG. 3). However, in the case where a so-called plus screw in which the engagement recess is formed in the cross hole is used as a screw plug, the tip of the second bar portion 14 is replaced with the minus driver portion 22 and is engaged in the cross hole. The part is formed in a plus driver.

  (2) In the above embodiment, the second bar portion 14 (minus driver portion 22) on the right side and the third bar portion on the left side with respect to the first bar portion 12 in the front view shown in FIG. Although 16 (male screw 24) is disposed, the present invention is not limited to this, and the second bar portion 14 and the third bar portion 16 may be replaced with each other.

  (3) In the said embodiment, although the escalator was taken as an example as a passenger conveyor which opens and closes a floor plate with the tool 10, and attaches and detaches a moving handrail, the tool 10 is not restricted to an escalator, For example, other passenger conveyors, for example Can be used on pallet-type and rubber belt-type moving walkways. That is, the opening and closing of the floor plate provided in the vicinity of the entrance / exit and the endless transport body of a moving sidewalk that transports passengers by circulating the endless transport body composed of a plurality of pallets connected in a ring or the endless transport body composed of a rubber belt It can also be used to attach and detach a balustrade moving handrail erected along the road.

  The passenger conveyor-dedicated tool according to the present invention can be suitably used for opening and closing a floor plate in an escalator, for example.

DESCRIPTION OF SYMBOLS 10 Passenger conveyor exclusive tool 12 1st bar | burr part 14 2nd bar | burr part 16 3rd bar | burr part 22 Minus screwdriver part 24 Male screw

Claims (3)

A female conveyor tool used in opening and closing of a floor plate in a passenger conveyor, wherein a female screw part is provided in the thickness direction, and a screw plug having an engagement recess at one end is screwed into the female screw part,
A first bar portion;
Second and third bar portions bifurcated into a Y shape from one end of the first bar portion;
Have
The tip part of the second bar part is formed in the engagement part engaged with the engagement recess,
A special tool for passenger conveyors, characterized in that a male screw threadedly engaged with the female screw portion is formed at the tip of the third bar portion.   The second and third bar portions are divided into two forks so that an axial center of the one end portion of the first bar portion and an axial center of each of the second and third bar portions form an equiangular interval. The special tool for passenger conveyor according to claim 1, wherein The other end portion of the first bar portion opposite to the one end portion is formed into a hook-like portion bent in a hook shape,
3. The passenger conveyor dedicated tool according to claim 1 or 2, wherein the hook-shaped portion is used for attaching and detaching a moving handrail in the passenger conveyor.

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