JP6182418B2 - Passenger conveyor - Google Patents

Description

  The present invention relates to a passenger conveyor such as an escalator or an electric road, and more particularly to a passenger conveyor having a buffer mechanism for buffering an external force generated by an earthquake acting on the passenger conveyor.

  Passenger conveyors typified by escalators are installed so as to straddle the lower and upper floors of the building, and the lower and upper floors have boarding / exiting floors. . A plurality of treads connected endlessly by a chain or the like on the frame straddling the lower floor and the upper floor are diagonally above or below the upper floor and the lower floor. It is configured to circulate and move. A pair of balustrades are erected on the left and right sides along the direction of travel of the plurality of treads connected endlessly. In addition, handrails that run in synchronization with the footboards are disposed above the pair of balustrades. Furthermore, a driving machine that drives the tread board and the hand rail, a tread board rail that guides the movement of the tread board, a control panel, and the like are disposed inside the frame.

  And the support mechanism part which supports such a passenger conveyor with the upper floor surface and lower floor surface of a building is an angle formed on the building with frame support angles provided at both ends of the frame of the passenger conveyor. It is configured to be supported by a cradle. Therefore, the weight of the passenger conveyor itself and the load of passengers and luggage are supported by this support mechanism. For this reason, generally, the angle pedestal of a building is provided in the vicinity of the building beam of the building.

  By the way, when a large shake is applied to the building due to an earthquake or the like, an inter-layer displacement in which the distance between the upper and lower building beams is enlarged and reduced due to the shaking of the building is caused. This inter-layer displacement also occurs between the angle cradles on which are installed. For this reason, by securing a predetermined gap between the frame of the passenger conveyor and the angle cradle, an excessive compressive force due to the interlayer displacement between the angle cradles due to the shaking of the building is caused by the frame of the passenger conveyor. It prevents it from acting on the body.

  For example, in JP 2011-63389 A (Patent Document 1), by setting one frame support angle and an angle cradle corresponding thereto as a non-fixed part that can move freely, the interval between building beams It has been proposed that the action of a forced external force based on dimensional variation is released at the non-fixed portion so that an excessive compressive force is not transmitted to the frame of the passenger conveyor.

  In other words, a long hole having a predetermined length in the frame body longitudinal direction is provided in the frame body support angle, and the long hole is slidably engaged with an engagement member fixed to the angle pedestal, so that the building beam is affected by an earthquake. Even if an interlayer displacement that expands and contracts the gap dimension of the frame, a large compression force is applied to the frame body by absorbing the interlayer displacement by the sliding structure of the long hole and the engaging member. It is.

JP 2011-63389 A

  By the way, the phenomenon of causing interlayer displacement in which the distance between building beams increases and decreases due to the shaking of the building is caused by the interlayer displacement in the longitudinal direction of the frame of the passenger conveyor between the upper floor and the lower floor, and orthogonal to this longitudinal direction. There is an interlayer displacement in the frame width direction that occurs between the upper floor and the lower floor. Therefore, in order to protect the frame body, it is necessary to cope with these two interlayer displacements.

  In Patent Document 1 described above, the inter-layer displacement in the longitudinal direction of the frame can be absorbed to some extent by the long holes provided in the frame support angle. However, since the engaging member is configured not to allow movement in the frame width direction perpendicular to the long hole, it cannot cope with interlayer displacement in the frame width direction.

  Further, as described in Patent Document 1 described above, when a sliding structure is employed in which the frame support angle and the angle pedestal can move freely, the following problems arise. That is, when an interlayer displacement occurs in the longitudinal direction of the frame body between the upper floor surface and the lower floor surface, the frame body moves in the longitudinal direction by the sliding structure as in Patent Document 1, and the longitudinal direction of the frame body In this way, a large compressive force is prevented from acting on.

  However, the amount of displacement in the longitudinal direction is not so large in small- to medium-scale earthquakes and can be handled by this sliding structure. However, in large-scale earthquakes, the amount of displacement in the interlayer is considerably large. Interlayer displacement cannot be absorbed even by the structure, and an excessive compressive force acts on the frame body via the frame body support angle. For this reason, the new subject that a frame, a frame support angle, or an angle base breaks arises.

  An object of the present invention is to provide a passenger conveyor having a buffer mechanism capable of absorbing interlayer displacement in the frame width direction between the upper floor and the lower floor, and capable of absorbing interlayer displacement in the frame longitudinal direction of a large-scale earthquake. Is to provide.

  A feature of the present invention is that at least one of the frame bodies is rotatably engaged with a rotation support body provided on the angle cradle with a frame body support angle, and is rotated between the frame body support angle and the angle cradle. A buffer mechanism in which a small-diameter portion is formed in a part of the support is provided between the frame support angle and the angle cradle.

  According to the present invention, at least one of the frame support angles is supported so as to be rotatable with respect to the angle cradle, so that it is supported by the terminal end portion of the frame supported on the upper floor and the lower floor. It becomes possible to absorb the inter-layer displacement in the frame width direction that occurs between the end of the frame and the frame. In addition, the small diameter part of the rotating support absorbs inter-layer displacement in the longitudinal direction of the frame by breaking when an excessive load is applied between the frame support angle and the angle cradle due to a large-scale earthquake. Will be able to.

It is a schematic block diagram of the passenger conveyor apparatus with which this invention is applied. It is a top view which shows the structure of the semi-fixed part vicinity of the frame of the passenger conveyor which becomes typical embodiment of this invention. It is a front view of the semi-fixed part vicinity of the frame shown in FIG. It is a principal part expanded sectional view of the semi-fixation part of the frame shown in FIG. It is a block diagram which shows the structure of the semi-fixed pin shown in FIG.

  Next, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments, and various modifications and application examples are included in the technical concept of the present invention. Is included in the range.

  First, a passenger conveyor to which the present invention is applied will be described with reference to FIG. In addition, although the passenger conveyor demonstrated below is a passenger conveyor (what is called an escalator) from which a step board changes to step shape, this invention is applicable also to the electric road where a step board moves to flat form.

  In FIG. 1, a passenger conveyor 1 is installed so as to straddle a lower floor surface 2 and an upper floor surface 3 of a building in a vertical direction, and a boarding / exiting floor (not shown) is provided on the lower floor surface 3 and the upper floor surface 2. Is provided. And inside the frame 4 which straddles the lower floor surface 3 and the upper floor surface 2 up and down, a plurality of step boards 5 connected endlessly by a chain or the like are diagonally upward across the upper floor and the lower floor, Alternatively, it is configured to circulate and move obliquely downward.

  A pair of balustrades 6 are erected on the left and right sides along the traveling direction of the plurality of step plates 5 connected endlessly. In addition, handrails 7 that run in synchronization with the tread plate 5 are disposed above the pair of balustrades 6, respectively. Further, a drive unit that drives the tread plate 5 and the hand rail 7, a tread plate rail that guides the movement of the tread plate, a control panel, and the like are disposed inside the frame body 4.

  An upper floor frame support angle 8 and a lower floor frame support angle 9 that support the frame body 4 are provided at both ends in the longitudinal direction of the frame body 4 (ends on the upper floor side and the lower floor side), respectively. . These frame support angles 8 and 9 are fixed to the frame body 4 so as to protrude from both longitudinal ends of the frame body 4 to the outside in the longitudinal direction of the frame body 4. The upper floor frame support angle 8 is supported by an upper floor angle receiving base 10 formed on the upper floor surface 2, and the lower floor frame support angle 9 is supported by a lower floor angle receiver formed on the lower floor surface 3. It is supported by the base 11.

  Here, the upper floor frame support angle 8 is semi-fixed to an upper floor angle cradle 10 provided on the upper floor surface 2 to form a semi-fixed portion A, and the lower floor frame support angle 9 is A non-fixed portion B is configured to be movably mounted on a lower floor angle cradle 11 provided on the lower floor surface 3.

  The lower floor frame support angle 9 may constitute a fixing portion that is firmly fixed to the lower floor angle receiving base 11 provided on the lower floor surface 3. That is, in recent buildings, due to structural improvements and the like, the amount of fluctuation of the spacing dimension of building beams due to shaking is kept small, and the mechanical strength of passenger conveyors has also been improved. For this reason, when the frame body 4 is not damaged by a small-scale earthquake or a medium-scale earthquake, the lower-floor frame support angle 9 and the lower-floor angle base 11 are fixed portions that are firmly fixed. Is good. The fixing part in this case has a higher fixing strength than the semi-fixing part.

  Further, the lower frame support angle 9 may be a fixed portion that can be rotated by being fixed to a lower floor angle receiving base 11 provided on the lower floor surface 3 with a pin. Or it is good also as a semi-fixed part which can be rotated similarly to the semi-fixed part A. Or it is good also as a semi-fixed part which cannot rotate.

  Therefore, on the lower floor side, whether to make a non-fixed part, a fixed part or a semi-fixed part, and whether to make it turnable depends on the seismic structure of the building, the mechanical strength of the frame of the passenger conveyor, etc. It only needs to be selected appropriately. In addition, since it is in the tendency for an interlayer displacement to become large, so that an installation floor is high, it is necessary to consider the installation floor of a passenger conveyor depending on the case.

  Here, the non-fixed portion represents a state in which the frame support angle can freely move with respect to the angle cradle. In addition, the semi-fixed portion refers to a frame that has a frame support angle that is fixed with respect to the angle cradle in a small to medium-scale earthquake and can move freely in a large-scale earthquake. Represents. Furthermore, the fixed part indicates that the frame support angle is basically fixed even if the frame support angle is a large-scale earthquake with respect to the angle cradle. The fixing strength between the frame support angle and the angle cradle for maintaining the fixed state is appropriately selected and set according to the scale of the earthquake. Although an earthquake is described here as an example, the magnitude of the interlayer displacement changes depending on the magnitude of the strong wind in the case of the interlayer displacement due to the strong wind.

  The semi-fixed portion A formed between the upper frame support angle 8 and the upper floor pedestal 10 provided on the upper floor 2 is an interlayer generated in the width direction of the frame 4 due to an earthquake or the like. In order to cope with the displacement and to reduce the compression force due to the interlayer displacement generated in the longitudinal direction of the frame body 4, a special buffer mechanism as described below is provided.

  2 and 3, the upper floor frame support angle 8 fixed to the frame body 4 is placed on the base body 29 of the upper floor angle base 10 via the height adjustment base 26. As shown in the figure, height adjustment bases 26 having height adjustment bolts 24 are attached in the vicinity of both ends of the upper floor frame support angle 8 in the width direction, and the height adjustment base 26 and the upper floor frame support are provided. The installation height of the upper floor frame support angle 8 is adjusted by interposing a plurality of height adjusting plates 28 between the angles 8. The fixing nut 27 is screwed into the height adjusting bolt 24 from above the upper floor frame support angle 8 so that the plurality of height adjusting plates 28 are firmly fixed.

  Therefore, the height adjustment base 26 and the cradle body 29 are in a non-fixed state in which they can move freely. For this reason, the rotational movement of the upper frame support angle 8 in the frame width direction is not hindered. In this embodiment, the height adjustment base 26 is in contact with the cradle body 29. However, the height adjustment bolt 24 may be used directly to contact the cradle body 29. .

  The cradle body 29 is disposed at both ends of the upper frame body support angle 8 in the width direction. The side surface of the cradle body 29 is opposed to the side surface of the upper floor frame support angle 8 with a predetermined gap h. The movement restraining part 19 is formed so as to rise from the upper floor angle cradle 10. The movement restraining portion 19 is formed in parallel with both side surfaces of the upper floor frame support angle 8. The movement restraining portion 19 has a function of restraining the upper frame support angle 8 from excessively rotating in the width direction when the interlayer displacement becomes excessive, as will be described later. A buffer member 20 is disposed in the gap h between the movement restraining portion 19 and the side surface of the upper frame support angle 8.

  A buffer mechanism as described below is provided between the upper floor frame support angle 8 and the upper floor angle cradle 10.

  A rotating support mounting base 13 is fixed to the upper floor angle receiving base 10 between the two receiving bases 29, and a rotating support 12 is provided on the rotating support mounting base 13. The rotation support portion 12 includes a semi-fixed pin 15A that is a rotation support and a pin attachment plate 15B that is a rotation support attachment member. Hereinafter, the rotation support will be described as a semi-fixed pin, and the rotation support mounting member will be described as a pin mounting plate.

  The installation position of the rotation support portion 12 is determined so as to be positioned approximately in the vicinity of the center in the width direction of the upper frame support angle 8. In the vicinity of the center of the upper frame support angle 8 in the width direction, an engagement hole (not shown in FIGS. 2 and 3) that engages with the semi-fixed pin 15A of the rotation support portion 12 so as to freely rotate. As a result, the upper frame support angle 8 is rotatably supported with respect to the semi-fixed pin 15A of the rotation support portion 12.

  An opening 23 formed so as to be cut toward the rotation support portion 12 is provided in the vicinity of the center of the end portion (tip portion) of the upper floor frame support angle 8 in the longitudinal direction of the frame body. The opening 23 is a work space for improving the performance when the semi-fixed pin 15A is mounted on the pin mounting plate 15B.

  Next, a specific configuration of the semi-fixed portion A will be described with reference to FIGS. 4 and 5. The semi-fixed pin 15A shown in FIG. 5 is attached to the pin mounting plate 15B shown in FIG. .

  In FIG. 4, a rotating support mounting base 13 is fixed on the angle cradle 10 fixed to a part of the building by welding or the like. Further, a pin is mounted on the rotating support mounting base 13. The mounting plate 15B is also fixed by welding.

  A screw hole 14 is cut by a tap in a part of the pin attachment plate 15B, and the attachment screw portion 22 of the semi-fixation pin 15A is screwed into the screw hole 14 and fixed. Further, a rotation engaging portion 25 having a circular cross section perpendicular to the axis is formed in the vicinity of the center of the semi-fixing pin 15A in the axial direction, and the upper floor frame support angle 8 is formed on the rotation engaging portion 25. The formed circular engagement hole 16 is engaged.

  The engagement hole 16 is formed so as to penetrate the upper frame support angle 8, and the semi-fixed pin 15 </ b> A is inserted through the penetrated portion, and the upper engagement frame support angle 8 is set by the rotation engagement portion 25. It is rotatably supported. As described above, the upper frame support angle 8 can be freely rotated while securing a necessary strength with a simple structure.

  In a state where the upper floor frame support angle 8 is attached to the semi-fixed pin 15A, the fixing nut 18 is screwed into the tightening screw portion 30 of the semi-fixed pin 15A via the washer 17, so that the upper floor frame support angle 8 is Is tightened so as to be in close contact with the pin mounting plate 15B. Thus, the upper floor frame support angle 8 can be rotated around the rotation engaging portion 25.

  As shown in FIG. 5, the semi-fixed pin 15 </ b> A has a small-diameter portion 21 formed continuously between the rotation engagement portion 25 and the attachment screw portion 22. In the present embodiment, the small-diameter portion 21 is formed of an annular groove formed on the outer periphery of the semi-fixed pin 15 </ b> A, and this annular groove is formed close to the rotation engaging portion 25 and the mounting screw portion 22. . More specifically, in the annular groove, the lower side surface of the rotation engaging portion 25 forms one wall surface of the annular groove, and the upper side surface of the mounting screw portion 22 forms the other wall surface of the annular groove. It forms so that both the rotation engaging part 25 and the attachment screw part 22 may adjoin. The annular groove has an arc-shaped cross section and is cut by an arc-shaped cutting tool with a thin tip. In this way, the breaking strength can be determined by adjusting the cutting amount and changing the depth of this portion. In addition to the cutting tool, it can be manufactured by cold forging, but it may be more reasonable to manufacture by cutting when it is adapted to individual passenger conveyors.

  The relationship between the diameter D1 of the rotation engaging portion 25, the diameter D2 of the valley of the mounting screw portion 22, and the diameter D3 of the small diameter portion 21 is “D1> D2> D3”. Therefore, the small-diameter portion 21 becomes the weakest portion in terms of strength, and a predetermined controlled breaking strength can be given to the small-diameter portion 21 by utilizing this. That is, by adjusting the length of the diameter D3 of the small-diameter portion 21, it is possible to set the degree of load at which the fracture occurs. In other words, it is possible to set how much an earthquake will cause a non-fixed state.

  As shown in FIG. 4, when the attachment screw portion 22 of the semi-fixed pin 15A is screwed into the screw hole 14 of the pin attachment plate 15B, the outer surface of the pin attachment plate 15B and the rotational engagement portion The lower surface of 25 is in contact and cannot be screwed any further. In this state, the attachment of the semi-fixing pin 15A is completed.

  Therefore, the small diameter portion 21 is continuously formed on the lower surface of the rotation engaging portion 25, and the relationship of “D1> D2> D3” is established, so that the outer surface of the pin mounting plate 15B can be Positioning can be performed so that the small-diameter portion 21 of the semi-fixed pin 15A exists in the vicinity of the contact surface with the lower surface of the upper frame support angle 8.

  Specifically, in this embodiment, since the small diameter portion 21 is formed continuously on the lower surface of the rotation engaging portion 25, the small diameter portion 21 is directly below the inner side from the outer surface of the pin mounting plate 15B. Will be located.

  In this embodiment, since the diameter D1 of the rotation engagement portion 25 is set larger than the diameter of the screw hole 14 into which the attachment screw portion 22 is screwed, the rotation engagement portion 25 is attached to the pin. By positioning by the outer surface of the plate 15B, the small diameter portion 21 is also uniquely positioned. It is important in this embodiment to set such a positional relationship.

  Here, when a relative movement occurs between the upper frame support angle 8 and the pin mounting plate 15B due to the earthquake, a shearing force is generated between the upper frame support angle 8 and the pin mounting plate 15B. become. By positioning the small diameter portion 21 near the contact surface between the outer surface of the pin mounting plate 15B and the lower surface of the upper frame support angle 8, this shear force can be effectively applied to the small diameter portion 21. The semi-fixing pin 15A can be broken with an accurate load.

  Further, the axial length L1 of the mounting screw portion 22 needs to be set shorter than the thickness L2 of the pin mounting plate 15B. When the axial length L1 of the mounting screw portion 22 is set to be longer than the axial length L2 of the screw hole of the pin mounting plate 15B, when the semi-fixed pin 15A is screwed, the tip end of the rotating support mounting base portion 13 is reached. To come into contact. For this reason, the small diameter portion 21 is positioned above the outer surface of the pin mounting plate 15B, and the shearing force generated between the upper frame support angle 8 and the pin mounting plate 15B is accurately small. There is a risk that the strength at break will vary. Therefore, in this embodiment, the axial length L1 of the mounting screw portion 22 is set shorter than the axial length L2 of the screw hole 14 of the pin mounting plate 15B to avoid the above-described problem.

  Further, it is necessary that the axial length L3 of the rotational engagement portion 25 is set shorter than the axial length L4 of the engagement hole 16 formed in the upper floor frame support angle 8. When the axial length L3 of the rotation engaging portion 25 is set to be longer than the axial length L4 of the engagement hole 16 of the upper floor frame support angle 8, the upper floor frame body When the support angle 8 is engaged, there is a possibility that the rotation engaging portion 25 protrudes above the outer surface of the upper frame support angle 8 and cannot be tightened by the fixing nut 18. For this reason, in this embodiment, the axial length L3 of the rotation engaging portion 25 is set shorter than the axial length L4 of the engaging hole 16 of the upper frame support angle 8 to avoid the above-mentioned problem. doing.

  In the present embodiment, the pin mounting plate 15B and the rotation support base 13 are described as separate bodies, but the pin mounting plate 15B and the rotation support mounting base 13 may be integrated. In short, it is only necessary that the above-described buffer mechanism is provided between the upper floor angle receiving base 10 and the upper floor frame body angle 8.

  Here, detailed description of the non-fixed portion B is omitted, but a large interlayer displacement occurs due to an earthquake or the like by a known method, and the interval between the frame body 4 and the lower floor surface 3 becomes excessive. A countermeasure is taken when it becomes too small. That is, when an interlayer displacement occurs between the upper floor surface 2 and the lower floor surface 3 and an external force acts in the longitudinal direction of the frame body 4, the frame body 4 moves in the longitudinal direction via a sliding structure (not shown). This prevents a large compressive force from acting in the longitudinal direction of the frame body 4.

  In the above configuration, when an interlayer displacement occurs in the width direction of the frame 4 between the upper floor surface 2 and the lower floor surface 3 due to the occurrence of an earthquake, the upper floor is centered on the semi-fixed pin 15A as an axis. The frame body support angle 8 and the frame body 4 connected thereto rotate with respect to the upper floor angle cradle 10 and the upper floor surface 2 to which it is fixed, or with the semi-fixed pin 15 as an axis. The upper floor angle cradle 10 and the upper floor surface 2 to which it is fixed rotate relative to the upper floor frame support angle 8 and the frame body 4 connected thereto. As a result, the external force acting on the frame 4 based on the interlayer displacement in the width direction of the frame 4 can be absorbed.

  At this time, if the interlayer displacement becomes excessive in the width direction of the frame body 4, the upper floor frame body is supported by the movement restraining portions 19 disposed on both side surfaces of the upper floor frame support angle 8 via the gap h. The movement of the angle 8 is suppressed, and the upper floor frame support angle 8 can be prevented from damaging the upper floor surface 2. Further, the buffer member 20 is arranged in the gap h, so that the impact when the upper floor frame support angle 8 collides with the movement restraining portion 19 is reduced, and the upper floor frame support angle 8 and the movement restraining portion 19 are damaged. It will be possible to prevent deformation.

  The action of absorbing the external force acting on the frame body 4 based on the interlayer displacement in the width direction of the frame body 4 is not limited to the case where the lower floor side is the non-fixed portion B, and the lower floor side is the fixed portion. Good. This is because even if the lower floor side is fixed, it can be rotated by the semi-fixed pin 15 on the upper floor side. Of course, even if the lower floor side is fixed to be rotatable or semi-fixed to be rotatable, it can be rotated on both the upper floor side and the lower floor side, so the frame based on the interlayer displacement in the width direction. The external force acting on 4 can be absorbed.

  On the other hand, when an interlayer displacement occurs in the longitudinal direction of the frame body 4 between the upper floor surface 2 and the lower floor surface 3, the frame body 4 moves in the longitudinal direction via the sliding structure of the non-fixed portion B. A large compressive force is prevented from acting in the longitudinal direction of the frame body 4. For this reason, in the case of a small-scale to medium-scale earthquake, the amount of interlayer displacement in the longitudinal direction is not so large, and can be dealt with by the sliding structure of the non-fixed portion B.

  However, in a large-scale earthquake, the amount of inter-layer displacement becomes considerably large, so that the displacement between the non-fixed portion B and the quasi-fixed portion A is greatly displaced. For this reason, there is a limit in the sliding structure of the non-fixed part B, and a large compressive force acts between the non-fixed part B and the semi-fixed part A. This compressive force acts on the frame body 4 via the upper floor frame support angle 8 of the semi-fixed portion A, and may damage the frame body 4. In addition, as described above, when the lower frame support angle 9 and the lower floor angle pedestal 11 are fixed parts, fixed with a pin so as to be pivotable, or when semi-fixed, A large compressive force may act between them. This compressive force acts on the frame body 4 via the upper floor frame support angle 8 of the semi-fixed portion A, and may damage the frame body 4.

  Therefore, in this embodiment, when a load of a predetermined value or more acts between the upper floor frame support angle 8 and the upper floor angle cradle 10 by this compressive force, the upper floor frame body support angle 8 and the pin are attached. The semi-fixed pin 15A interposed between the plates 15B is configured to break. At this time, the small diameter portion 21 having a small breaking strength formed between the rotation engaging portion 25 of the semi-fixing pin 15A and the mounting screw portion 22 is broken.

  The small diameter portion 21 is provided for adjusting the breaking strength, and the breaking strength can be adjusted by the diameter of the small diameter portion 21. The rotation engaging portion 25 and the mounting screw portion 22 of the semi-fixed pin 15A have a breaking strength larger than the breaking strength of the small-diameter portion 21 so that the small-diameter portion 21 is reliably broken at a predetermined load. Yes. The positional relationship between the upper frame support angle 8, the contact surface of the pin mounting plate 15 </ b> B, and the small diameter portion 21 is as described above.

  In this way, when the large-scale earthquake occurs and an excessive compressive force is applied to the frame body 4, the upper fixed body support angle 8 and the upper floor angle pedestal 10 are relatively moved by breaking the semi-fixed pin 15A. It is possible to avoid the frame body 4 from being plastically deformed or the upper floor frame support angle 8 or the upper floor angle receiving base 10 from being damaged.

  As shown in FIGS. 4 and 5, the shape of the semi-fixed pin 15 </ b> A according to the present embodiment is such that the diameter D <b> 1 of the rotating engagement portion 25 is the diameter D <b> 2 of the mounting screw portion 22 and the diameter D <b> 3 of the small diameter portion 21. It is bigger. This makes it possible to reliably position the small diameter portion 21 of the semi-fixed pin 15A in the vicinity of the contact surface between the pin mounting plate 15B and the upper frame support angle 8 during installation of the passenger conveyor.

  That is, as shown in FIG. 4, when the attachment screw portion 22 of the semi-fixed pin 15A is screwed into the screw hole 14 of the pin attachment plate 15B, the outer surface of the pin attachment plate 15B and the rotational engagement portion 25 are The lower surface is in contact with the positioning. Therefore, since the small-diameter portion 21 exists in the lower portion of the rotation engaging portion 25, the small-diameter portion 21 of the semi-fixed pin 15A is surely provided near the contact surface between the mounting plate 15B and the upper frame support angle 8. Come to be located. Therefore, if there is a movement that generates a shearing force between the pin mounting plate 15B and the upper frame support angle 8, the shearing force can be stably applied to the small diameter portion 21 of the semi-fixing pin 15A. As a result, the breaking strength can be stabilized.

  In addition, when an external force is applied to the semi-fixed pin 15A and a rotational force is applied such that the semi-fixed pin 15A is tilted, the diameter of the rotary engaging portion 25 is larger than that of the small-diameter portion 21. The contact surface between the lower surface of the engaging portion 25 and the outer surface of the pin mounting plate 15B can bear the rotational force of inclination, and has the effect of eliminating the rotational force of inclination acting on the small diameter portion 21. . As a result, the breaking strength can be stabilized.

  Further, when attaching the semi-fixed pin 15A, if the contact state between the lower side surface of the rotation engaging portion 25 and the outer surface of the pin attachment plate 15B is confirmed, the small diameter portion 21 is connected to the pin attachment plate 15B and the upper floor frame. This is a judgment standard located near the contact surface of the body support angle 8, and the effect of facilitating maintenance and management of construction quality can be expected.

  Next, a detection function for detecting whether or not the semi-fixed pin 15A is broken is provided in the semi-fixed pin 15A, and an automatic stop function for automatically stopping the passenger conveyor by this detection function at the time of a large-scale earthquake is added to the control device. Examples will be described.

  In this embodiment, a small-diameter through path is provided along the central axis of the semi-fixed pin 15A, and a semi-fixed pin 15A and an electrically insulated conductor are inserted into the through path. The conducting wire is provided so as to straddle the small-diameter portion 21, and the conducting wire is connected to a control device for the passenger conveyor 1 (not shown), and a weak current flows from the control device. The control device monitors the conduction state of this current, and if it is conducting, the semi-fixing pin 15A is not broken, and if the current is cut off, it has a judgment function for judging that the semi-fixing pin 15A is broken. I have.

  Therefore, the control device determines that the semi-fixed pin 15A is not broken because the conductor is normally connected and the current is conducted, and the process of performing the operation of the passenger conveyor 1 as usual is executed. On the other hand, when a large-scale earthquake occurs and a breaking load acts on the semi-fixed pin 15A and the small diameter portion 21 breaks, the conducting wire is also cut and no current flows. The control device determines that the semi-fixed pin 15A is broken because the conductor is cut and the current is cut off, and executes the process of automatically stopping the operation of the passenger conveyor 1.

  As described above, the control device for the passenger conveyor 1 can determine the breaking state of the semi-fixed pin 15 </ b> A, and can automatically stop the passenger conveyor 1 when the breaking state is determined. Even when the conductor is broken for some reason, the passenger conveyor 1 can be automatically stopped to perform safe operation control.

  In this embodiment described above, the structure between the upper floor frame support angle and the upper floor angle receiving portion is a semi-fixed portion A, but instead, the lower floor frame support angle and the lower floor angle receiving portion. The structure between the two may be a semi-fixed portion A structure. The semi-fixed portion A in this case may adopt the configuration shown in FIG. Moreover, it is good also as a structure like the semi-fixed part A on both the upper floor side and the lower floor side. Further, as described above, when one of the longitudinal directions of the frame body 4 is a quasi-fixed portion A, the other may be a non-fixed portion, a fixed portion, or a quasi-fixed portion. It doesn't matter. Therefore, a structure like the semi-fixed portion A may be used in at least one of the longitudinal directions of the frame body 4.

  In general, the frame support angle and the angle receiving part are filled with building materials such as mortar so as to have the same plane height as the floor surface. There is a problem that.

  For this reason, in the present invention, a removable floor cover member is separately manufactured, and the frame cover support angle, the angle receiving part, and the buffer mechanism described above are covered with the floor cover member, so It becomes possible to easily check and check the status of the fixed part. Of course, the height of the floor lid member is determined so as to be the same plane height as the floor surface.

  As described above, according to the present invention, in at least one of the frame bodies, the frame body support angle is rotatably engaged with the rotation support body provided on the angle base, and the frame body support angle and the angle base are also provided. A cushioning mechanism formed by forming a small-diameter portion on a part of the rotating support between the frame support angle and the angle cradle is provided.

  According to such a configuration, since at least one frame support angle is supported so as to be rotatable with respect to the angle cradle, it is supported by the terminal end portion of the frame supported on the upper floor and the lower floor. It is possible to absorb the inter-layer displacement in the width direction of the frame that occurs between the end portions of the frame bodies. In addition, the small diameter part of the rotating support absorbs inter-layer displacement in the longitudinal direction of the frame by breaking when an excessive load is applied between the frame support angle and the angle cradle due to a large-scale earthquake. Will be able to.

  DESCRIPTION OF SYMBOLS 1 ... Passenger conveyor, 2 ... Upper floor surface, 3 ... Lower floor surface, 4 ... Frame body, 5 ... Footboard, 6 ... Railing, 7 ... Hand rail, 8 ... Upper floor frame support angle, 9 ... Lower floor Frame support angle, 10 ... Upper floor angle cradle, 11 ... Lower floor angle cradle, 12 ... Rotation support part, 13 ... Rotation support body mounting base, 14 ... Screw hole, 15A ... Semi-fixed pin, 15B ... Pin mounting plate, 16 ... engaging hole, 17 ... washer, 18 ... fixing nut, 19 ... movement restraining portion, 20 ... buffer member, 21 ... small diameter portion, 22 ... mounting screw portion, 23 ... opening, 24 ... high Adjustment bolt, 25... Rotation engaging portion, A .quasi-fixed portion, B.

Claims (9)

A frame provided between one floor surface of the building and the other floor surface; a first frame body support angle and a second frame body support angle provided at both ends of the frame body; A first angle pedestal and a second angle pedestal that are formed on the floor surface and the other floor surface and support the first frame support angle and the second frame support angle; A tread board connected endlessly between the one floor surface and the other floor surface and circulating, and a balustrade attached to the frame body and erected on the left and right sides of the tread board in the traveling direction In the passenger conveyor provided,
At least the first angle support is provided with a rotation support, and the first frame support angle corresponding to the first angle support is rotatably engaged with the rotation support, and the first Forming a small-diameter portion having a small breaking strength compared to other parts in a part of the rotation support between the frame support angle and the first angle cradle ;
The rotation support is fixed to a rotation support attachment member attached to the first angle cradle, and formed at the first frame support angle at a rotation engagement portion formed on the rotation support. The engaged hole is rotatably engaged,
The lower surface of the rotation engagement portion and the outer surface of the rotation support attachment member are in contact with each other, the small-diameter portion is continuously formed on the lower surface of the rotation engagement portion, and the small-diameter portion is formed. The passenger conveyor is characterized in that a portion is located below the outer surface of the rotating support attachment member . In claim 1,
The small-diameter portion formed on the rotating support body is given a predetermined breaking strength, and the rotating support body is not less than a predetermined value between the first frame support angle and the first angle receiving base. When the load is not applied, the first frame support angle and the first angle pedestal are fixedly coupled, and the predetermined value or more is provided between the first frame support angle and the first angle pedestal. A passenger conveyor characterized in that when the load is applied, the small-diameter portion is broken so that the first frame support angle and the first angle receiving base can move relative to each other. In claim 1,
The rotation support body includes at least the rotation engagement portion, the small diameter portion, and a mounting screw portion, and the mounting screw portion is screwed into a screw hole formed in the rotation support body mounting member. The small diameter portion is below the outer surface of the rotating support mounting member in a state where the engaging hole of the first frame support angle is engaged with the rotating support. Passenger conveyor, characterized in that it is located at. In claim 3,
The diameter D1 of the rotation engaging portion, the diameter D2 of the valley of the mounting screw portion, and the diameter D3 of the small diameter portion are in a relationship of D1> D2> D3, and the small diameter portion is further rotated and engaged. And the attachment screw portion are screwed into the rotation support body attachment member, and the rotation engagement portion contacts the rotation support body attachment member. The passenger conveyor, wherein the small-diameter portion is positioned below the outer surface of the rotating support attachment member in a fixed state. In claim 4,
The axial length of the mounting screw portion of the rotating support is determined to be shorter than the axial length of the screw hole of the rotating support mounting member, and the rotation of the rotating support An axial length of the engaging portion is determined to be shorter than an axial length of the engaging hole formed in the first frame support angle. In any one of Claims 1 thru | or 4,
The small diameter portion is an annular groove formed around the rotating support, and the breaking strength of the rotating support is adjusted by adjusting the depth of the groove. In one of claims 1 to 4,
A passenger conveyor, wherein an opening cut out toward the rotating support is formed on a distal end side of the first frame support angle in a longitudinal direction of the frame. In any one of Claims 1 thru | or 4,
The first angle pedestal is provided with a movement restraining portion for inhibiting rotational movement of the first frame body support angle via a predetermined gap on both side surfaces of the first frame body support angle. Passenger conveyor. In any one of Claims 1 thru | or 4,
A passenger conveyor characterized in that a breakage detecting portion for detecting breakage of the small-diameter portion is provided inside the rotating support body.

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