JP2019055872A - Support device for lifting step of passenger conveyor - Google Patents

Abstract

To reduce the burden of a maintenance worker when using a support device for lifting a step of a passenger conveyor.SOLUTION: A support device 80 for lifting a step includes an operation lever body 82 having a tool mounting part 92 and an operation part 90, which are mutually inclined with a predetermined obtuse angle at a support part 94, a support base 84 for rotatably supporting the support part 94 of the operation lever body 82, and a step lifting tool 86 held by the tool mounting part 92. The step lifting tool 86 includes a cleat holding part sandwiching both-standing wall surfaces standing from a groove bottom of one of a plurality of cleats 70 extending along a traveling direction of a step 20 and a hole for lifting provided in the cleat holding part. The tool mounting part 92 includes a hole hanging part hung on the hole for lifting.SELECTED DRAWING: Figure 6

Description

  The present disclosure relates to a passenger conveyor step lifting support device, and more particularly, to a passenger conveyor step lifting support device for lifting a step for checking a gap between a comb and a cleat at an entrance / exit.

  An example of a passenger conveyor is an escalator that carries a user on a plurality of steps that move between an entrance and exit on an upper floor of a building and an entrance and exit on a lower floor. In addition, moving walkways are passenger conveyors. The step in the passenger conveyor is a frame in which a tread board on which a user puts his / her foot and a riser corresponding to kicking are integrated. When a space in which a plurality of steps move is called a movement path, the step is driven by a drive chain suspended on a step shaft provided with a drive roller, and driven along a drive rail provided on a truss below the movement path. The roller moves.

  The step board is provided with a plurality of cleats extending along the traveling direction in which the step moves in order to prevent slipping and the like, and a groove between the plurality of cleats is provided at the entrance / exit of the passenger conveyor, respectively. Thus, a comb plate having comb teeth called a plurality of combs is arranged. Since the comb may be damaged if the comb comes into contact with the cleat, a pressing plate for the driving roller is provided so as to face the driving rail so that the step is not lifted unnecessarily. The gap between the comb and the cleat is inspected, for example, at the time of maintenance and inspection of the passenger conveyor, whether a predetermined gap is secured in a state where the step is lifted to the maximum position where the step can be lifted structurally.

  In Patent Document 1, a hole that allows a measurement gauge to be inserted into one of a plurality of comb plates is provided as a gauge for measuring the clearance between entrances and exits of a passenger conveyor. Measuring the length to the top surface of the plate is disclosed. According to this, it is not necessary to hold the measurement gauge by hand, and both hands can lift the step until the drive roller hits the holding plate.

JP 2012-166882 A

  Since the drive shaft that circulates along the moving path is suspended on the step shaft of the step, it takes a considerable burden on the maintenance worker to lift it. Accordingly, there is a need for a passenger conveyor step lifting support device that reduces the burden on maintenance workers.

  A step lifting support device for a passenger conveyor according to the present disclosure includes an operation lever body having a jig mounting portion and an operation portion that are inclined at a predetermined obtuse angle at a fulcrum portion, and a support that rotatably supports the fulcrum portion of the operation lever body. A step and a step lifting jig held by a jig mounting portion of the operating lever body, the step lifting jig from the bottom of the groove with respect to one of the plurality of cleats extending along the traveling direction of the step. The cleat pinching part that sandwiches the standing wall, the lock force setting part that sets the cleat pinching part to a predetermined pinching force, and the lock that is pinched with the pinching force set in the locking force setting part to release the locked state The lifting part provided in the cleat pinching part is included, and the jig mounting part of the operating lever includes a hole hanging part that is hung on the lifting hole.

  According to the above configuration, the step lifting jig is locked in a state where the cleat compatible wall is sandwiched and sandwiched with a predetermined sandwiching force, and thereafter, the one-hand operation of the lever body is performed using the lifting holes. You can lift the step. Since the operation lever lifts the step lifting jig on the basis of the lever principle, a light load is required and the load on the maintenance worker can be reduced.

  In the step lifting assist device for a passenger conveyor according to the present disclosure, the cleat pinching portion has a thickness that enters a groove between adjacent cleats, and the cleat extends in a step on a surface facing the standing wall surface of the cleat. It is preferable to have a plurality of line contact protrusions extending along the direction.

  According to the above configuration, since the cleat sandwiching portion has the plurality of line contact protrusions extending in the direction in which the cleat extends, the cleat standing wall surface can be securely sandwiched.

  In the step lifting support device for a passenger conveyor according to the present disclosure, the step lifting jig is preferably a rocking plier having a cleat pinching portion integrated with a mouth portion for pinching the object.

  Commercially available locking pliers have a locking mechanism that locks the mouth with a set clamping force. According to the said structure, the cleat pinching part produced by the predetermined specification can be joined and formed to a commercially available locking pliers.

  In the step lifting support device for a passenger conveyor according to the present disclosure, it is preferable that the support base is provided with a cushioning material for placement on the upper surface of the comb plate of the passenger conveyor on the back surface.

  According to the said structure, even if the arrangement position of the support part of an operation lever is set on a comb plate, a comb plate is not damaged.

  According to the passenger conveyor step lifting support apparatus configured as described above, the load on the maintenance worker can be reduced.

It is a whole block diagram of the escalator in which the step lifting assistance apparatus of the passenger conveyor which concerns on embodiment is used. It is an enlarged view of the upper machine room in FIG. It is a figure which shows the maintenance operation | work using the step lifting assistance apparatus of the passenger conveyor which concerns on embodiment. It is an enlarged view of the A section in FIG. It is sectional drawing along the VV line in FIG. FIG. 4 is a cross-sectional view taken along the cleat groove on the right side in the width direction of the cleat sandwiched between step lifting jigs in FIG. 3. It is a perspective view showing the release state where the locked state of the step lifting jig in the step lifting support device of the passenger conveyor according to the embodiment is released. It is a perspective view which shows the step lifting jig | tool of the state which pinched one cleat in the step lifting assistance apparatus of the passenger conveyor which concerns on embodiment.

  Embodiments according to the present invention will be described below in detail with reference to the drawings. Below, although an escalator is described as a passenger conveyor, this is an illustration for description and may be a passenger conveyor such as a moving sidewalk. The shapes, dimensions, materials, and the like described below are examples for explanation, and can be appropriately changed according to the specifications of the step lifting support device for the passenger conveyor. Below, the same code | symbol is attached | subjected to the same element in all the drawings, and the overlapping description is abbreviate | omitted.

  FIG. 1 is a diagram showing a configuration of an escalator 10 as a passenger conveyor in which a passenger conveyor step lifting support device 80 is used. Hereinafter, unless otherwise specified, the step lifting support device 80 of the passenger conveyor is simply referred to as a step lifting support device 80.

  The escalator 10 is an elevating and conveying device that carries a user on a plurality of steps 20 that move between the entrance 14 on the upper floor of the building 12 and the entrance 16 on the lower floor. FIG. 1 shows a traveling direction, a vertical direction, and a width direction. The travel direction is the direction in which the step 20 moves and travels. When distinguishing both sides of the travel direction, the direction toward the upper floor is referred to as one side, and the direction toward the lower floor is referred to as the other side. The vertical direction is a direction for distinguishing whether the building 12 is the upper side or the lower side. The width direction is a direction in which the left and right sides of the moving passage 40 are distinguished from each other. When the entrance 14 on the upper floor is viewed from the entrance 16 on the lower floor, the right side is the right side direction and the left side is the left side direction. is there.

  In the escalator 10, a railing 42 and a moving handrail 44 are arranged on both sides in a moving passage 40 on which the user rides, that is, the step 20 moves by connecting the upper and lower floors, and the rear side of the moving passage 40, that is, the building A truss 46 is provided inside the twelve structures.

  The truss 46 is a space that is provided from the upper floor to the lower floor inside the structure of the building 12 and in which the moving mechanism of the step 20, the moving mechanism of the moving 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 between them. An upper machine room 50 is provided in the upper floor side horizontal portion, and a drive motor 52 and a drive sprocket 54 driven by the drive motor 52 are disposed. A lower machine room 56 is provided in the lower floor side horizontal portion, and a driven sprocket 58 is disposed. In the inclined portion, a step chain 60 is disposed between the drive sprocket 54 and the driven sprocket 58. The step chain 60 is stretched over the step shaft 28 of each step 20, and driving rollers 30 (see FIG. 2) are provided at both ends of the step shaft 28 of each step 20, and the driving roller 30 is disposed on the truss 46. Roll on the drive rail 62.

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

  Step 20 is also referred to as a step, and is a moving stage for carrying a user that is attached to a plurality of end chains 60 having an endless loop shape. In step 20, a tread 22 on which a user places his / her foot and a riser 24 corresponding to kicking are integrated by a frame 26. The step shaft 28 is a shaft that is rotatably supported by the frame 26 and connected to the step chain 60, and the driving roller 30 is attached to the tip protruding from the step chain 60. The driving roller 30 is provided on one side of the traveling direction of Step 20, and a driven roller 32 is provided on the other side of Step 20.

  In the upper machine chamber 50, the step chain 60 meshes with the outer peripheral teeth of the drive sprocket 54. Since the step chain 60 is driven to move by the rotational driving force of the drive sprocket 54, the traveling direction is reversed in the upper machine chamber 50 as the step chain 60 is rotationally driven around the rotational axis of the drive sprocket 54. Accordingly, the normal direction of the tread 22 is also reversed in the upper machine room 50 in the plurality of steps 20 connected to the step chain 60 via the step shaft 28. The drive rail 62 that guides the drive roller 30 is arranged to support the drive roller 30 above the drive sprocket 54, but is reversed to drive rail 63 that supports the drive roller 30 below the drive sprocket 54. Become. Regarding the guide of the driven roller 32, the driven rail 64 that supports the driven roller 32 and the driven rail 65 that supports the driven roller 32 are partially overlapped in the reverse region of the drive sprocket 54.

  The presser plate 66 shown in FIG. 2 is a plate member that is disposed to face the drive rail 62 so that the step 20 is not lifted upward unnecessarily. The presser plate 66 is disposed above the drive roller 30 with an appropriate predetermined gap.

  FIG. 3 is a perspective view of the upper floor entrance 14 as viewed from above. The step board 22 of step 20 is provided with a plurality of cleats 70 extending along the traveling direction in order to prevent the user's feet from slipping. Since the cleat 70 is a standing wall-like protrusion having grooves on both sides, if the step 20 is lifted more than necessary, the cleat 70 may interfere with the comb 74 at the tip of the comb plate 72 disposed at the entrance 14 on the upper floor. is there. The presser plate 66 is provided in order to prevent interference between the cleat 70 of the tread plate 22 and the comb 74 of the comb plate 72 at the entrances 14 and 16. A plurality of cleats 70 are arranged over the entire width direction of the tread plate 22, and similarly, a plurality of combs 74 are also arranged over the entire width direction of the comb plate 72. In FIG. Indicates.

  FIG. 4 is an enlarged view of a portion A in FIG. FIG. 5 is a cross-sectional view taken along line VV in FIG. The arrangement pitch P <b> 1 along the width direction of the plurality of cleats 70 on the tread plate 22 is the same as the arrangement pitch P <b> 2 along the width direction of the comb 74 of the comb plate 72. The cleat 70 has a height H0 and a width W1, and is a standing wall portion erected from the upper surface of the tread plate 22, and between the adjacent standing wall portions is a cleat groove 71 having a groove width W2. Therefore, P1 = (W1 + W2). The comb 74 is a comb tooth disposed at the other end of the comb plate 72 so as to crease a groove between the plurality of cleats 70. Since the step 20 moves at a predetermined traveling speed, the cleat 70 passes between the comb teeth of the comb 74 at a predetermined speed. The shape of the comb 74 is determined so as not to interfere with the cleat 70 in the travel of step 20. 4 and 5, the gaps between the comb 74 and the cleat 70 are made uniform in the width direction and the vertical direction. In FIG. 5, the gap S <b> 1 is the distance between the groove bottom of the cleat groove 71 of the tread plate 22 and the bottom surface of the comb 74. The clearance S <b> 2 is the distance between the top surface of the cleat 70 of the tread 22 and the ceiling surface of the groove of the comb 74. FIG. 5 shows an example of S1 = S2 = (H0 / 2). In this state, there is no fear that the comb 74 and the cleat 70 are in contact with each other in the vertical direction.

  An example of the dimensions of P1 = P2, W1, W2, H0 is W1 is about 2.5 mm, W2 is about 7.5 mm, P1 = P2 is about 10 mm, H0 is about 12 mm, S1 = S2 = (H0 / 2) is about 6 mm. This is an illustrative example, and the gap between the comb 74 and the cleat 70 can be appropriately set according to the specifications of the escalator 10.

  If step 20 is lifted unnecessarily during traveling, both S1 and S2 will be smaller than (H0 / 2), and the comb 74 and the cleat 70 may come into contact in the vertical direction. The presser plate 66 described with reference to FIG. 3 regulates the upward movement of the drive roller 30 so that the step 20 is not lifted unnecessarily during traveling. If the presser plate 66 is worn or foreign matter adheres between the presser plate 66 and the driving roller 30, the step 20 is lifted unnecessarily during traveling, and the comb 74 and the cleat 70 move up and down. There may be a risk of contact in the direction.

  Returning to FIG. 3 again, FIG. 3 shows a state of maintenance work for checking the gaps S1 and S2 between the comb 74 and the cleat 70 at the entrance 14 of the upper floor. Maintenance work relating to the inspection of the gaps S1 and S2 is performed at the entrance / exit 14 on the upper floor and the entrance / exit 16 on the lower floor at the time of a periodic inspection predetermined in the escalator 10. Since the contents of the maintenance work relating to the inspection of the clearances S1, S2 are substantially the same at both the entrances 14 and 16, the maintenance work relating to the inspection of the clearances S1, S2 at the entrance 14 will be described below.

  The entrance / exit 14 is an area near the end of the arrangement of the balustrade 42 on the upper floor, and FIG. 3 shows inner decks 48 and 49 that respectively support the balustrades 42 on both the left and right sides of the moving passage 40. The entrance / exit 14 is provided with a comb plate 72 and a landing plate 76, and one side ahead of the entrance / exit 14 is a floor surface of an upper floor. The maintenance worker 8 operates the step lifting support device 80 with the right hand in a posture such as placing one knee on the landing plate 76, and lifts the step 20 to the limit of lifting on the structure. Then, the gaps S1 and S2 are measured using the gap gauge 78 held in the left hand. The upper limit of the step 20 in the structure is the case where the driving roller 30 of the step 20 hits the presser plate 66, so that the step lifting support device 80 lifts the step 20 until the drive roller 30 hits the presser plate 66. It is a device that supports work.

  The step lifting support device 80 includes an operating lever body 82, a support base 84, and a step lifting jig 86. The operating lever body 82 is a lever body of a plate material bent at an obtuse angle. The support base 84 is a support member that is placed on the upper surface of the comb plate 72 and supports the lever 82 as a lever. The step lifting jig 86 is a plier that sandwiches one cleat 70 of the tread plate 22.

  6 is a cross-sectional view taken along the line VI-VI along the cleat groove 71 on the right side in the width direction of the cleat 70 sandwiched by the step lifting jig 86 in FIG. FIG. 6 includes step 20, including a cleat groove 71, a comb plate 72, a comb 74, a landing plate 76, a support base 84, an operating lever body 82, and a step lifting jig 86, and the relationship among them is shown. . FIG. 7 is a view showing the step lifting jig 86 in a released state after the locked state is released, and FIG. 8 is a view showing the step lifting jig 87 in a locked state with one cleat 70 interposed therebetween. is there.

  The operation lever body 82 is a plate member having an operation portion 90 on one side and a jig attachment portion 92 on the other side, and the operation portion 90 and the jig attachment portion 92 are inclined at a predetermined obtuse angle θ at a fulcrum portion 94. . An example of the obtuse angle θ is about 140 degrees. This is an illustrative example, and can be changed as appropriate according to the specifications of the step lifting support device 80.

  The operation unit 90 has a plate width W0 and a thickness t0 that the maintenance worker 8 can easily grasp by hand. By setting W0> t0, the rigidity of the operation unit 90 against bending in the longitudinal direction can be increased. The length along the longitudinal direction of the operation portion 90 is longer than the length along the longitudinal direction of the jig mounting portion 92, and the position where the maintenance worker 8 grips the operation portion 90 and applies the operation force F is appropriately set. As a result, a force obtained by expanding the operation force F by the lever principle is generated at the tip of the jig mounting portion 92.

  The plate width and thickness of the jig attachment portion 92 may be the same as those of the operation portion 90. An attachment connection portion 98 is provided at the other end of the jig attachment portion 92. The attachment connection portion 98 has a rotation hole that is rotatably supported around a shaft 97 provided at the other end portion of the jig attachment portion 92. A rotation hole may be provided in the jig attachment portion 92, and a shaft 97 supported rotatably in the rotation hole may be provided in the attachment connection portion 98. A hook-shaped hole suspension portion 100 is fixedly attached to the end portion of the attachment connecting portion 98 opposite to the shaft 97. The hole suspension portion 100 is suspended in lifting holes 122a and 122b (see FIGS. 7 and 8) provided in the step lifting jig 86. When the operating force F indicated by the arrow is applied to the operating lever body 82, the tip of the jig mounting portion 92 moves in an arc shape indicated by the arrow with the fulcrum portion 94 as the rotation center. Since the attachment connection portion 98 is rotatably supported by the shaft 97 of the jig attachment portion 92, the hole suspension portion 100 moves in the vertical direction as indicated by the white arrow.

  The operation lever body 82 is formed by forming a metal plate having a sufficient strength with respect to 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 operating lever body 82, and includes a pedestal 102 and a support column 104. The support column 104 has a rotation hole that is rotatably supported by a fulcrum shaft provided on the fulcrum part 94 of the operating lever body 82. Instead of this, a rotation hole may be provided in the operating lever body 82 and a shaft that is rotatably supported by the rotation hole may be provided in the support column 104. The pedestal 102 is a portion disposed on the upper surface of the comb plate 72, and a cushion material 106 is provided on the back surface facing the upper surface of the comb plate 72. As the cushion material 106, a rubber plate or a rubber resin plate having appropriate elasticity can be used. By using the cushion material 106, the support reaction force received by the support base 84 when the operating force F is applied to the operating lever body 82 is reduced, and the comb plate 72 is prevented from being damaged.

  FIG. 7 is a diagram showing a state in which the locked state is released to the release state and the mouth portions 110a and 110b at the tip are opened in the step lifting jig 86. FIG. The step lifting jig 86 is a jig made by changing the tip of a commercially available locking plier into a form suitable for step lifting. Similar to the commercially available locking pliers, the grip 111 having the mouth portion 110a and the grip 113 having the mouth portion 110b, the link member 115 that connects the grips 111 and 113 to the locked state or the released state, and the biasing force that generates the locking force. And a spring 117.

  The grip 111 is provided with a lock force setting unit 112 that sets the pinching of the mouth portions 110a and 110b at the tip to a predetermined pinching force. The lock force setting unit 112 is a screw knob, and can adjust the urging force of the urging spring 117 by the amount of screwing to adjust the clamping force of the mouth portions 110a and 110b at the tip, and the adjusted clamping force does not reset the screw knob. As long as it does not change. If the grips 111 and 113 are gripped strongly in that state, the link material 115 moves to the locked state, the grips 111 and 113 are locked with the object sandwiched therebetween, and the locked state is maintained without holding the grips 111 and 113. Will continue. The grip 113 has a lock release unit 114 that releases the locked state. The unlocking unit 114 can be operated so as to be rotatable with respect to the grip 113, and the link member 115 is moved to the release side by the rotation, so that the locked state of the grips 111 and 113 can be released to the released state. FIG. 7 is a view showing a case where the distal ends 110a and 110b are open in a released state. Since the contents of the lock force setting unit 112 and the lock release unit 114 are well-known in commercially available locking pliers, detailed description thereof is omitted.

  A part remade to make the step lifting jig 86 from a commercially available locking plier will be described. Cleat sandwiching portions 116a and 116b were joined to the two mouth portions 110a and 110b by welding portions 118a and 118b, respectively. As a joining method, brazing may be used instead of welding. At the same time, the total thickness of the mouth portion 110a and the cleat pinching portion 116a and the total thickness of the mouth portion 110b and the cleat pinching portion 116b are less than the groove width W2 of the cleat groove 71 of the tread plate 22, respectively. The thickness of the mouth portions 110a and 110b was adjusted. For adjusting the thicknesses of the mouth portions 110a and 110b, a processing method such as cutting can be used. Although the longitudinal grooves 119a and 119b are provided in the mouth portions 110a and 110b of the commercially available locking pliers, necessary portions are scraped off in the process of joining the cleat sandwiching portions 116a and 116b. FIG. 7 shows some of the remaining vertical grooves 119a and 119b.

  The cleat sandwiching portions 116a and 116b have substantially the same shape, and a plurality of line contact protrusions 120a and 120b are formed on the surfaces facing each other. The line contact protrusions 120a and 120b extend in a direction substantially orthogonal to the direction in which the longitudinal grooves 119a and 119b provided in the mouth portions 110a and 110b of the commercially available locking pliers extend. In FIG. 7, partial arc-shaped parallel protrusions are shown instead of linearly extending parallel protrusions, but inclined parallel protrusions may be used as long as they are not longitudinal grooves. By making the extending direction of the line contact protrusions 120a and 120b substantially orthogonal to the extending direction of the longitudinal grooves 119a and 119b, when the cleat sandwiching portions 116a and 116b sandwich the cleat 70 of the tread 22 in the extending direction of the cleat 70, Almost parallel line contact is possible. In the case of the longitudinal grooves 119a and 119b, since the line contact is parallel to the direction in which the cleat 70 is lifted, the frictional force against the vertical slip of the cleat 70 cannot be increased. On the other hand, since the line contact protrusions 120a and 120b extending to the cleat 70 are line contact substantially perpendicular to the direction in which the cleat 70 is lifted, the frictional force against the vertical slip of the cleat 70 can be increased.

  Lifting holes 122a and 122b are provided in the cleat sandwiching portions 116a and 116b. The lifting holes 122a and 122b are holes used when the step lifting jig 86 is operated and lifted by operating the lever body 82. The lifting holes 122a and 122b are provided on the jig mounting portion 92 of the operating lever body 82. The hook part of the hole suspension part 100 is passed.

  FIG. 8 is a view showing the step lifting jig 87 in a locked state with one cleat 70 interposed therebetween, FIG. 8A is a perspective view of the whole, and FIG. 8B is a point in FIG. It is sectional drawing of the part enclosed with the chain line. The step lifting jig 87 is in a state in which one cleat 70 is sandwiched by the cleat sandwiching portions 116a and 116b at the tip from the released state of the step lifting jig 86 in FIG. The procedure for setting the state of FIG. 8 is as follows. Here, the cleat grooves 71 on both sides of the cleat 70 are distinguished, and the right side of the cleat 70 is referred to as a cleat groove 71a and the left side is referred to as a cleat groove 71b.

  First, in the step lifting jig 86 shown in FIG. 7, the grips 111 and 113 are lightly gripped by hand to narrow the distance between the front end (the mouth portion 110a and the cleat pinching portion 116a) and the (mouth portion 110b and the cleat pinching portion 116b). . Depending on the setting of the locking force setting section 112, the gap between the (mouth 110a and cleat pinching portion 116a) and the (mouth 110b and cleat pinching portion 116b) remains open to some extent. In this case, the screwing amount of the locking force setting unit 112 is increased to narrow the open interval. By appropriately operating the screwing amount of the locking force setting portion 112, the tip (the mouth portion 110a and the cleat pinching portion 116a) is inserted into the cleat groove 71a, and the mouth portion 110a and the cleat pinching portion 116a) are inserted into the cleat groove 71a. insert. Further, the screwing amount of the locking force setting section 112 is increased so that the opening interval is such that the cleat 70 is sandwiched by (the mouth portion 110a and the cleat sandwiching portion 116a) and (the mouth portion 110b and the cleat sandwiching portion 116b). In this state, the pinching force = 0, so that the screwing amount of the locking force setting unit 112 is increased by a predetermined amount from this state to set the predetermined pinching force. The predetermined squeezing force can be set in advance by experiments based on the condition that the step 20 does not shift downward. In this state, the locked state continues even if the grips 111 and 113 are not gripped. This is the state of the step lifting jig 87 in FIG. The above operating method is an example for explanation, and can be appropriately changed depending on the specifications of a commercially available locking plier that is the basis of the step lifting jig 86.

  In FIG. 8B, the standing wall surfaces on both sides of the cleat 70 are distinguished, and the direction facing the cleat groove 71a side is called the standing wall surface 108a, and the direction facing the cleat groove 71b is called the standing wall surface 108b. As shown in FIG. 8B, the cleat pinching portion 116a has a line contact protrusion 120a substantially parallel to the running direction, which is the direction in which the standing wall surface 108a extends, on the surface facing the standing wall surface 108a. Similarly, the cleat sandwiching portion 116b has a line contact protrusion 120b substantially parallel to the traveling direction, which is the direction in which the standing wall surface 108b extends, on the surface facing the standing wall surface 108b. Since the cleat 70 is sandwiched by the cleat sandwiching portions 116a and 116b via the line contact protrusions 120a and 120b on the standing wall surfaces 108a and 108b on both sides, the step 20 is effectively suppressed from shifting downward.

  In the above, the step lifting jig 86 is remade by adjusting the two mouth portions 110a and 110b to a predetermined thickness and joining the cleat sandwiching portions 116a and 116b by welding or brazing to a commercially available locking plier. It was. Instead, using a commercially available rocking plier as a basic model, a dedicated plier having two mouth portions 110a and 110b in the shape of the cleat sandwiching portions 116a and 116b is designed, and it is necessary without using a joining means such as welding. You may integrally mold using a molding die. The integrally molded product may be mass-produced as necessary. By doing so, the step lifting jig 86 having compatibility and stable performance is obtained.

  8 Maintenance workers, 10 Escalators (passenger conveyors), 12 buildings, 14, 16 boarding gates, 20 steps, 22 treads, 24 risers, 26 frames, 28 step shafts, 30 drive rollers, 32 driven rollers, 40 travel paths, 42 Balustrade, 44 moving handrail, 46 truss, 48, 49 inner deck, 50 upper machine room, 52 drive motor, 54 drive sprocket, 56 lower machine room, 58 driven sprocket, 60 step chain, 62, 63 drive rail, 64, 65 Follow rail, 66 presser plate, 70 cleat, 71, 71a, 71b cleat groove, 72 comb plate, 74 comb, 76 landing plate, 78 clearance gauge, 80 (passenger conveyor) step lifting support device, 82 operating lever body, 84 Support stand, 86,8 Step lifting jig, 90 operation section, 92 jig mounting section, 94 fulcrum section, 97 axis, 98 mounting connection section, 100 hole suspension section, 102 pedestal, 104 support pillar, 106 cushion material, 108a, 108b standing wall surface, 110a , 110b Mouth part, 111, 113 grip, 112 Locking force setting part, 114 Lock release part, 115 Link material, 116a, 116b Cleat pinching part, 118a, 118b Welding part, 119a, 119b Vertical groove, 120a, 120b Line contact protrusion Part, 122a, 122b Lifting hole.

Claims (4)

An operation lever body having a jig mounting portion and an operation portion which are inclined at a predetermined obtuse angle with each other at the fulcrum portion;
A support base for rotatably supporting the fulcrum part of the operating lever body;
A step lifting jig held by the jig mounting portion of the operating lever;
With
The step lifting jig is
A cleat pinching portion that sandwiches a compatible wall surface that rises from the groove bottom with respect to one of a plurality of cleats extending along the traveling direction of the step;
A locking force setting unit that sets the clamping of the cleat clamping unit to a predetermined clamping force;
An unlocking unit for releasing the locked state by pinching with the pinching force set by the locking force setting unit;
A lifting hole provided in the cleat sandwiching portion;
Including
The step lifting support device for a passenger conveyor, wherein the jig mounting portion of the operating lever includes a hole hanging portion that is hung on the lifting hole. The cleat sandwiching portion is
A thickness that enters a groove between adjacent cleats, and a surface facing the standing wall of the cleat has a plurality of line contact protrusions extending along a direction in which the cleat extends in the step; The step-up support device for passenger conveyors according to claim 1. The step lifting jig is
The step lifting support device for a passenger conveyor according to claim 2, which is a locking plier having the cleat pinching portion integrated with a mouth portion for pinching an object. The support base is
The step lifting support device for a passenger conveyor according to claim 1, wherein a cushioning material for placement on the upper surface of the comb plate of the passenger conveyor is provided on the back surface.

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