JP2014136609A - Passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passenger conveyor which can control the relative movement of a frame body support angle and an angle receiving stand of a passenger conveyor in small-scale earthquakes to medium-scale earthquakes, while the same can perform the relative movement of the frame body support angle and the angle receiving stand of the passenger conveyor in large-scale earthquakes.SOLUTION: When a load of a predetermined value or more does not act between the frame body support angle and the angle receiving stand, the frame body support angle and the angle receiving stand are fixedly combined, and conversely when a load of a predetermined value or more acts between the frame body support angle and the angle receiving stand, the frame body support angle and the angle receiving stand are combined using a buffer member which is fractured such that the frame body support angle and the angle receiving stand can move relatively. Thereby, in earthquakes of medium-scale or less, since the buffer member fixes the frame body support angle and the angle receiving stand, both do not move relatively and floor surfaces are not damaged. Since the buffer member is fractured in large-scale earthquakes, the frame body support angle and the angle receiving stand can move relatively, and the passenger conveyor escapes damage.

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, the fluctuation of the size of the building beam will increase and decrease due to the shake of the building, and the angle between the angle cradle where the passenger conveyor is installed Also, this dimensional variation occurs. 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 dimensional fluctuations 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.

  Further, for example, in Japanese Utility Model Publication No. 50-21277 (Patent Document 1), by setting one frame support angle and an angle cradle corresponding thereto as a non-fixed part that can freely move, It has been proposed that the action of a forced external force based on the variation in the distance between the two is released at the non-fixed portion and not transmitted to the passenger conveyor.

Japanese Utility Model Publication No. 50-21277

  By the way, as described in Patent Document 1 described above, when a configuration in which the frame support angle and the angle pedestal can freely move is adopted, the following problems have been clarified. That is, if the frame support angle and the angle pedestal are configured to freely move relative to each other, the building and the passenger conveyor can easily move relative to each other.

  For this reason, even in small to medium-scale earthquakes that may occur frequently, the building and the passenger conveyor easily move relative to each other, and the floor surface of the building around the passenger conveyor entrance / exit The phenomenon of damage was developed. Therefore, when the floor surface of the building is damaged, it is necessary to stop the passenger conveyor and repair the damaged floor surface, and this countermeasure is desired.

  In such a background, in the above-described small- to medium-scale earthquakes, the amount of fluctuation of the spacing dimension of the building beams due to shaking is not so large due to structural improvements of the building, etc., and the passenger conveyor mechanical The situation is that the strength has been improved.

  Therefore, in the small to medium-scale earthquake as described above, there is a problem that the floor surface of the building around the entrance of the passenger conveyor is damaged due to the relative movement between the building and the passenger conveyor easily. In order to solve the problem, it is possible to firmly fix between the frame support angles and the angle cradles at both ends of the passenger conveyor so that the building and the passenger conveyor do not easily move relative to each other. Conceivable. If it does in this way, a building and a passenger conveyor will not carry out relative motion easily, and it will become possible to eliminate damage to a floor.

  However, in small- to medium-scale earthquakes, the amount of fluctuation in the spacing between building beams due to the shaking of the building is not so large, and the strength of the passenger conveyor is improved, so there is virtually no problem. In a large-scale earthquake, a large shaking is applied to the building, and the spacing of the building beams changes greatly due to the shaking of the building. For this reason, excessive external force (mainly compressive force) resulting from the dimensional fluctuation between the angle bases based on the shaking of the building acts on the frame of the passenger conveyor via the frame support angle. For this reason, the new subject that a passenger conveyor breaks or an angle receiving stand breaks comes to appear.

  The object of the present invention is to regulate the relative movement of the frame support angle of the passenger conveyor and the angle cradle for small-scale to medium-scale earthquakes, and the frame support angle and angle support of the passenger conveyor for large-scale earthquakes. An object of the present invention is to provide a passenger conveyor capable of performing relative movement of a table.

  The feature of the present invention is that the frame support angle and the angle pedestal are fixed between the frame support angle and the angle pedestal when a load exceeding a predetermined value does not act between the frame support angle and the angle pedestal. When a load of a predetermined level or more is applied between the frame body support angle and the angle cradle, the frame body support angle and the angle cradle are coupled with a buffer member that allows the frame body support angle and the angle base to move relative to each other. By the way.

  According to the present invention, in the case of a small-scale earthquake or a medium-scale earthquake, the frame support angle and the angle pedestal are not subjected to a load exceeding a predetermined value. Since it is fixed, it does not move relatively and the floor surface is not damaged.

  In addition, in a large-scale earthquake, the frame support angle and the angle pedestal are moved relative to each other because a load exceeding a predetermined level is applied to the frame support angle and the angle pedestal to break the buffer member. It is possible to prevent the passenger conveyor from being damaged or the angle receiving base from being damaged.

It is a side view showing the whole passenger conveyor composition to which the present invention is applied. It is the top view which looked at the part by which the buffer mechanism of the passenger conveyor which becomes the 1st Embodiment (Example 1) of this invention was arrange | positioned from the upper surface. It is sectional drawing of the part by which the buffer mechanism which shows the AA cross section shown in FIG. 2 is arrange | positioned. It is a front view of the part by which the buffer mechanism seen from the P direction shown in FIG. 2 is arrange | positioned. It is a block diagram which shows the structure of the buffer member shown in FIG. It is a block diagram which shows the structure of the buffer member of the buffer mechanism part which becomes the 2nd Embodiment (Example 2) of this invention. It is a block diagram which shows the structure of the buffer member of the buffer mechanism part which becomes the 3rd Embodiment (Example 3) of this invention. It is a block diagram for demonstrating the method of determining the minimum length of the breaking load adjustment groove | channel of the buffer member shown in FIG. It is a block diagram for demonstrating the method of determining the intermediate length of the breaking load adjustment groove | channel of the buffer member shown in FIG. It is a block diagram for demonstrating the method of determining the maximum length of the breaking load adjustment groove | channel of the buffer member shown in FIG. The structure of the buffer member of the buffer mechanism part which becomes the 4th embodiment (Example 4) of this invention is shown, and it is a block diagram in case the welding site | part of a frame support angle is high. FIG. 12 shows the configuration of the buffer member shown in FIG. 11, and is a configuration diagram in the case where the welded portion of the frame support angle is intermediate. FIG. 12 shows the configuration of the buffer member shown in FIG. 11, and is a configuration diagram when the welded portion of the frame support angle is low. The structure of the buffer member of the buffer mechanism part which becomes the 5th Embodiment (Example 5) of this invention is shown, and it is a block diagram in case the welding site | part of a frame support angle is high. FIG. 15 shows the configuration of the buffer member shown in FIG. 14, and is a configuration diagram in the case where the welded portion of the frame support angle is intermediate. FIG. 15 shows the configuration of the buffer member shown in FIG. 14, and is a configuration diagram when the welded portion of the frame support angle is low. The structure of the buffer member of the buffer mechanism part used as the modification of 5th Embodiment is shown, and it is a block diagram when the welding site | part of a frame support angle is high. FIG. 18 shows the configuration of the buffer member shown in FIG. 17, and is a configuration diagram in the case where the welded portion of the frame support angle is intermediate. FIG. 18 shows the configuration of the buffer member shown in FIG. 17, and is a configuration diagram when the welded portion of the frame support angle is low. It is a block diagram which shows the structure of the buffer member of the buffer mechanism part which becomes the 6th Embodiment (Example 6) of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 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 in step shape, it is applicable also to the electric road where a step board moves in flat form.

  In FIG. 1, a passenger conveyor 1 is installed so as to straddle a lower floor 2 and an upper floor 3 of a building in a vertical direction, and a lower floor (one floor) 2 and an upper floor ( On the other floor surface 3, a boarding / exiting floor (not shown) is provided. And in the frame 4 which straddles the lower floor surface 2 and the upper floor surface 3 up and down, a plurality of step boards 5 connected endlessly by a chain or the like are formed between the upper floor surface 3 and the lower floor surface 2. It is configured to circulate and move diagonally upward or diagonally downward. In the case of an electric road, it is not the upper floor or the lower floor but the same floor.

  A pair of balustrades 6 are erected on the left and right sides of the footboard 5 along the direction of travel of the plurality of footboards 5 connected endlessly. In addition, handrails 7 that run in synchronization with the tread plate 5 are respectively disposed above the pair of balustrades. 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.

  A lower floor frame support angle 8 and an upper 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 lower floor frame support angle 8 is supported by a lower floor angle pedestal 10 formed on the lower floor surface 2, and the upper floor frame support angle 9 is supported by an upper floor angle receiver formed on the upper floor surface 3. It is supported by the base 11.

  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.

  2 to 4 show the buffer mechanism 12 between the upper floor frame support angle 9 and the upper floor angle cradle 11 according to the first embodiment of the present invention. FIG. 2 is a view of the shock absorbing mechanism 12 between the upper floor frame support angle 9 and the upper floor angle pedestal 11 as seen from above, and FIG. 3 is a view showing the AA cross section of FIG. 4 is a view from the P side of FIG.

  2 to 4, an upper floor frame support angle 9 is fixed to an end portion of the frame body 4 in the longitudinal direction, and the upper floor frame body support angle 9 is mounted on the upper floor angle receiving base 11. Is placed. Further, the upper floor frame support angle 9 is configured to be fixed to the upper floor angle cradle 11 via a pair of buffer mechanisms 12 provided on the left and right.

  The upper floor angle pedestal 11 is formed in a step portion formed at the end of the upper floor surface 3, and anchor plates 13 are fixed to the upper floor angle cradle 11 by four anchor bolts 14, respectively. As shown in the drawing, the anchor plate 13 is divided into a left and a right pair.

  Further, the width direction stopper 15 is firmly fixed to the upper surface on the outer side in the width direction of the left and right anchor plates 13 by a fixing means such as welding. Therefore, the movement in the width direction of both side surfaces of the upper frame support angle 9 in the width direction is restricted by the width direction stopper 15.

  A pair of load bearing bodies 16 are firmly fixed to the upper surfaces of the pair of anchor plates 13 by a fixing means such as welding, and the upper floor frame support angle 9 is placed on the load bearing bodies 16. ing. Since the upper floor frame support angle 9 is placed on the load bearing body 16, the upper floor frame body support angle 9 becomes free when the buffer member 17 described later breaks down. It is possible to move in the longitudinal direction.

  Here, in the present embodiment, the pair of buffer mechanisms 12 has the same configuration on both the left and right sides, and therefore, one configuration will be described below.

  On the upper surface of the anchor plate 13, the buffer member 17, which is a characteristic component of the present embodiment, is also firmly fixed to the anchor plate 13 by fixing means such as welding.

  As shown in FIG. 3, the buffer member 17 has a bottom wall 17-1 and a side wall 17-2 standing perpendicular to the bottom wall 17-1, and the cross section is formed in an “L” shape. . For example, the buffer member 17 is made of a metal such as a steel plate, and a so-called “L-shaped steel” or “steel steel” can be used. At least one side of the bottom wall 17-1 perpendicular to the frame 4 of the frame support angle 9 is fixed by welding with the anchor plate 13 and the welded portion W-1. Further, the front end portion 9A of the frame body support angle 9 in the longitudinal direction of the frame body 4 is welded and fixed to the side wall 17-2 of the buffer member 17 by a welded portion W-2.

  Therefore, since the buffer member 17 is integrated with the upper frame support angle 9 by welding, the upper frame support angle 9 is basically fixed to the upper floor angle base 11. . The fixing force in this case is due to the frictional force generated between the upper frame support angle 9 and the load support 16 and the fact that the buffer member 17 and the upper frame support angle 9 are fixed by welding. It is based on the fixing force.

  In this embodiment, as shown in FIG. 4, a breaking load adjusting groove 18 is formed in the buffer member 17. As shown in FIG. 5 in detail, the buffer member 17 is formed with a pair of breaking load adjusting grooves 18 on the side surface in the width direction of the side wall 17-2. In this embodiment, the breaking strength of the buffer member 17 is adjusted by the length of the breaking load adjusting groove 18.

  That is, when a load from the upper floor frame support angle 9 acts in a direction orthogonal to the side wall 17-2 of the buffer member 17, a bending moment force is generated on the side wall 17-2. At this time, the load at which the side wall 17-2 of the buffer member 17 breaks differs depending on the length of the break load adjusting groove 18.

  Therefore, the region of the portion connecting the pair of breaking load adjustment grooves 18 is a low strength region, and both the upper and lower sides of this low strength region are high strength regions. For this reason, the upper high strength region is fixed by the upper frame support angle 9 and the welded portion W-2, and the lower high strength region is fixed by the anchor plate 13 and the welded portion W-1. Although the lower high strength region is fixed to the anchor plate 13, as a result, it is fixed to the upper floor angle receiving portion 11.

  In the present embodiment, the side wall 17-2 is not broken up to a predetermined load, and the side wall 17-2 is broken when the predetermined load is exceeded. For example, what is the length of the load in the longitudinal direction of the frame 4 of the upper frame support angle 9 that is generated based on a small-scale earthquake or a large-scale earthquake and the length of the fracture load adjusting groove 18 is Find out if it can withstand the load. The length of the breaking load adjusting groove 18 that can withstand the load caused by the upper frame support angle 9 generated based on a small-scale earthquake or a medium-scale earthquake may be determined. .

  The buffer mechanism 12 described above is composed of the anchor plate 13 and the buffer member 17 in this embodiment, but at least the buffer member 17 is directly fixed to the upper floor angle receiving portion 11 with an anchor bolt. It is possible to obtain an effect by doing.

  In the present embodiment, the lower frame support angle 8 of the lower floor is firmly fixed to the lower floor angle cradle 10 as in the prior art.

  In the passenger conveyor 1 provided with the buffer mechanism 12 as described above, the behavior of the buffer mechanism 12 when an earthquake occurs and the building is shaken will be described.

  For example, if a building shakes due to a small-scale earthquake or a medium-scale earthquake, this building shake will cause a dimensional change in which the distance between building beams increases and decreases, and a passenger conveyor is installed. This dimensional variation also occurs between the angle cradle.

  However, in such small-scale earthquakes and medium-scale earthquakes, the amount of fluctuation in the spacing between building beams due to shaking is not so great due to structural improvements of the building, etc., and the mechanical strength of passenger conveyors Has also been improved.

  For this reason, in this embodiment, since the buffer member 17 is integrated with the upper frame support angle 9 by welding, the upper frame support angle 9 is basically fixed to the upper floor cradle 11. It has become a form. The breaking load determined by the breaking load adjusting groove 18 of the buffer member 17 is applied to the side wall 17-2 of the buffer member 17 from the upper frame support angle 9 caused by the above-described small-scale earthquake or medium-scale earthquake. Since the shock-absorbing member 17 generated by the load is larger than the load intended to break, the shock-absorbing member 17 is not broken by the load acting from the upper frame support angle 9.

  Therefore, in a small-scale earthquake or a medium-scale earthquake, the movement of the upper floor frame support angle 9 is restricted by the buffer member 17, and therefore the upper floor frame support angle 9 cannot move, and passengers The floor surface of the building around the entrance / exit of the conveyor 1 is not damaged.

  On the other hand, when a building shakes due to a large-scale earthquake, the shaking of the building is much larger than that of a small-scale or medium-scale earthquake, resulting in dimensional variations that increase and decrease the spacing between building beams. This large dimensional variation also occurs between the angle cradles on which the passenger conveyors are installed.

  Then, the load of the buffer member 17 caused by the load applied to the side wall 17-2 of the buffer member 17 from the upper frame support angle 9 is larger than the break load determined by the break load adjusting groove 18 of the buffer member 17. Since the direction becomes much larger, the buffer member 17 is broken by the load applied by the upper frame support angle 9.

  As a result, the upper floor frame support angle 9 is released from the movement restriction by the buffer member 17, and the upper floor frame support angle 9 can slide on the load bearing body 16. That is, since the movement of the upper floor frame support angle 9 based on the shaking of the building is allowed, a forced external force based on the shaking of the building acts on the frame 4 via the upper floor frame support angle 9. As a result, the problem that the frame 4 is deformed and the problem that the upper floor angle cradle 11 is damaged can be solved.

  In the present embodiment, the configuration in which the breaking load adjusting grooves 18 are provided on both sides of the side wall 17-2 of the buffer member 17 is shown. However, the breaking load adjusting grooves 18 may be one, or instead of the grooves. Needless to say, a hole may be provided in the buffer member 17 so as to be formed at an appropriate portion of the buffer member 17 as a breakage adjustment hole.

  In the present embodiment, the buffer mechanism 12 is provided between the upper floor frame support angle 9 and the upper floor angle receiving portion 11, but is limited between the upper floor frame support angle 9 and the upper floor angle receiving base 11. It is also possible to adopt a configuration that is incorporated in a part of the horizontal portion of the frame body 4 without any problem.

  Next, a second embodiment of the present invention will be described. In this second embodiment, as shown in FIG. 6, a breakage detecting portion is provided on either side of the breakage load adjusting groove 18. It is. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  In FIG. 6, between the pair of break load adjusting grooves 18 formed in the buffer member 17, a break detection unit 19 that electrically detects the break state of the low strength region is provided. In the present embodiment, the breakage detecting portion 19 is disposed in the vicinity of one of the breakage load adjusting grooves 18. Preferably, a stress expansion hole 20 is provided on the opposite side of the breakage detecting portion 19 from the breakage detecting portion 19. Is formed. In other words, the stress expansion hole 20 is formed on the side of the rupture load adjustment groove 18, and the rupture detection unit 19 is disposed therebetween. Here, the stress expansion hole 20 is a stress concentration hole provided so that the breakage detecting portion 19 of the buffer member 17 is attached and the portion is surely broken. Therefore, it is not necessary to provide when the gap between the breaking load adjustment grooves 18 is surely broken, but it is desirable to provide it when the breaking load adjusting groove 18 is broken more reliably.

  The breakage detection unit 19 is constituted by a resistance wire with a film, for example, and both ends of the resistance wire with a film are connected to a pair of signal lines 21. The signal line 21 is connected to a safety device of a passenger conveyor (not shown). When the buffer member 17 is broken between the breaking load adjusting groove 18 and the stress expansion hole 20 of the buffer member 17, the coating film constituting the break detecting unit 19. The attached resistance wire is also broken.

  Therefore, no current flows between the pair of signal lines 21, and the safety device can transmit a command to detect the breakage of the breakage detection unit 19 and stop the passenger conveyor 1. When this command is issued, the control device operates to stop the passenger conveyor 1 by stopping the driving machine that drives the footboard 5 and the handrail 7 arranged in the frame 4.

  Here, the safety device detects the breakage based on the magnitude of the current of the signal line 21. When a voltage is applied to the breakage detection unit 19 via the signal line 21 in a normal state, the current flows between the signal lines 21. Therefore, the normal state can be determined. On the other hand, when the buffer member 17 breaks due to a large-scale earthquake, the break detecting unit 19 is also disconnected, so that no current flows between the pair of signal lines 21. For this reason, by detecting that the current does not flow with the safety device, it is possible to send a command to stop the passenger conveyor 1 to the control device to stop the various driving machines.

  The passenger conveyor is equipped with a communication facility for communicating through a network such as a telephone line (not shown) for the purpose of maintenance and inspection and collection of information on the operation status. Therefore, since the breakage detection unit 19 detects that the buffer member 17 is broken, the safety device transmits information that the passenger conveyor 1 is stopped to the management center at a remote location via the network described above, so that the passenger The management center can be notified that the conveyor 1 has been stopped.

  By doing in this way, it is possible to know that the buffer member 17 of the passenger conveyor 1 has been broken by a large-scale earthquake without directly investigating the situation of the passenger conveyor 1 on site. Furthermore, even if it is a passenger conveyor judged that there is no problem in appearance by a direct survey, it becomes possible to estimate the internal fracture status from the fracture information as described above.

  Here, in the present embodiment, the configuration in which the passenger conveyor 1 is automatically stopped by the disconnection of the breakage detection unit 19 has been described, but in addition to this, the breakage detection unit 19 is provided on a plurality of holding bodies having different break strengths, Until the break detection signal is detected, it is possible only to detect breakage state information so as not to stop the passenger conveyor 1 or to monitor the state of the passenger conveyor 1.

  Furthermore, by using a strain sensor for the breakage detection unit 19, it is possible to estimate the deterioration state from the state of surface elongation due to the bending of the buffer member 17 or the like. Therefore, by using the signal from the strain sensor, it is possible to set the replacement time of the buffer member 17 and the like. That is, in a small-scale earthquake or a medium-scale earthquake, the shock-absorbing member 17 is basically not deformed, but the shock-absorbing member 17 may be considerably fatigued due to repeated earthquakes. For this reason, the buffer member 17 may be broken by a small scale earthquake or a medium scale earthquake, and the floor surface may be damaged by the upper frame support angle 9. However, since the deterioration state can be estimated from the state of elongation of the surface of the buffer member 17, the necessity for replacement of the buffer member 17 is found early, and the buffer member 17 is quickly replaced. Can be performed.

  Next, a third embodiment of the present invention will be described. In this third embodiment, as shown in FIGS. 7 to 10, the breaking load forming the breaking load adjusting groove 18 provided in the buffer member 17 is formed. A load adjusting groove forming hole and a length setting hole for determining the length of the breaking load adjusting groove 18 are provided. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  FIG. 7 shows the buffer member 17 before being welded to the anchor plate 13. From the lower side to the side wall 17-2 of the buffer member 17, breaking load adjusting groove forming holes 24R-1 to 24R-3, 24L-1 to 24L-3, first length setting holes 23R, 23L, and Second length setting holes 22R and 22L are formed.

  Here, the breaking load adjusting groove forming holes 24R-1 to 24R-3 and 24L-1 to 24L-3 are arranged for each predetermined breaking strength. For example, in this embodiment, the three breaking load adjusting groove forming holes 24R-1 to 24R-3 and 24L-1 to 24L-3 are perforated so as to cope with discrete three-stage breaking strength. Perforated. In this embodiment, the fracture load adjusting groove forming holes 24R-1 to 24R-3 and 24L-1 to 24L-3 are provided on both the left and right sides, but it goes without saying that only one of them is sufficient.

  The material of the portion existing between the fracture load adjusting groove forming holes 24R-1 to 24R-3 and 24L-1 to 24L-3 is a power saw such as an electric saw (a reciprocating saw or a saw blade called a saver saw). It is possible to cut by cutting the metal. The length of the rupture load adjusting groove 18 can be adjusted by selecting the rupture load adjusting groove forming holes 24R-1 to 24R-3 and 24L-1 to 24L-3 corresponding to the required rupture strength. This makes it possible to select the breaking strength.

  In this embodiment, in addition to the breaking load adjusting groove forming holes 24R-1 to 24R-3 and 24L-1 to 24L-3, the breaking load adjusting groove forming holes 24R-1 to 24R-3 and 24L- One of the features is that the first length setting holes 23R and 23L and the second length setting holes 22R and 22L for selecting 1 to 24L-3 are provided.

  The bending moment applied to the portion of the low strength region between the pair of breaking load adjusting grooves 18 formed in the buffer member 17 is a welded portion where the upper frame support angle 9 is welded to the side wall 17-2 of the buffer member 17. Varies depending on the height position. For this reason, when the height position of the welded part of the frame support angle 9 is relatively high, the distance from the welded part to the breaking load adjusting groove 18 is increased and the bending applied to the part between the breaking load adjusting grooves 18 is increased. The moment increases.

  Therefore, if the length of the breaking load adjusting groove 18 is determined uniformly, the shock-absorbing member 17 may be broken by a load smaller than the load whose function is expected in some cases. Therefore, there is a concern that the buffer member 17 is broken. On the contrary, there is a concern that the shock absorber 17 is not broken even by a large-scale earthquake and the passenger conveyor is damaged.

  In order to solve such a problem, an upper floor frame body is used to set the breaking strength of the portion of the low strength region between the pair of breaking load adjusting grooves 18 formed in the buffer member 17, that is, the length of the breaking load adjusting groove 18. What is necessary is just to enable it to adjust according to the height position of the welding site | part of the support angle 9. FIG.

  For this purpose, the relationship between the length of the rupture load adjusting groove 18 and the rupture strength is determined in advance, and the distance from the welded portion of the upper frame support angle 9 that applies a load to the buffer member 17 to the rupture load adjusting groove 18. And the load (load from the upper frame support angle 9 generated in the event of a large-scale earthquake) are determined, and the rupture load adjusting groove forming holes 24R-1 to 24R-3 and 24L corresponding to the rupture strength are obtained. What is necessary is just to determine the position of -1-24L-3. Therefore, in the present embodiment, the first length setting holes 23R and 23L, the second length in addition to the three breaking load adjustment groove forming holes 24R-1 to 24R-3 and 24L-1 to 24L-3. Since the setting holes 22R and 22L are provided, the fracture load adjusting groove forming holes 24R-1 to 24R-3 and 24L-1 to 24L-3 are selected as follows.

  First, if the distance from the welded portion of the upper frame support angle 9 to the breaking load adjusting groove 18 is long, the outermost breaking load adjusting groove forming holes 24R-1 and 24L-1 are notched and the breaking load adjusting groove is short. 18 will be formed.

  If the distance from the welded portion of the upper frame support angle 9 to the breaking load adjusting groove 18 is shorter than the above, the second breaking load adjusting groove forming holes 24R-2 and 24L-2 are cut out and Thus, the breaking load adjusting groove 18 longer than the above is formed.

  Further, when the distance from the welded portion of the upper frame support angle 9 to the breaking load adjusting groove 18 is further shorter, the innermost breaking load adjusting groove forming holes 24R-3 and 24L-3 are notched and the longest breaking load is obtained. The adjustment groove 18 is formed.

  From this point of view, a configuration as shown in FIGS. 8 to 10 is proposed, and the first selection of the fracture load adjusting groove forming holes 24R-1 to 24R-3 and 24L-1 to 24L-3 is performed. The length setting holes 23R and 23L and the second length setting holes 22R and 22L are provided. The first length setting holes 23R and 23L and the second length setting holes 22R and 22L are used to select the number of breakage load adjusting groove forming holes 24R-1 to 24R-3 and 24L-1 to 24L-3. Functions as an index hole representing an index.

  Next, a specific example in which the length of the breaking load adjusting groove 18 of the buffer member 17 is set during construction for installing the passenger conveyor 1 will be described with reference to FIGS. The heights L1, L2, and L3 shown in FIGS. 8 to 10 are the installation height of the upper frame support angle 9, that is, the welding of the side wall 17-2 of the buffer member 17 and the upper frame support angle 9. The height of the part is shown. These have a relationship of L1> L2> L3.

  As described above, assuming that the load acting on the buffer member 17 is the same, the breaking strength of the buffer member 17 depends on the height L1, L2, and L3 of the welded portion of the side wall 17-2 and the upper frame support angle 9. Is done. For this reason, if the height of the welded portion of the upper frame support angle 9 is the height L1, it is necessary to increase the breaking strength, and if it is the height L2, it is necessary to make the breaking strength smaller than that described above. If it is L3, it is necessary to further reduce the breaking strength.

  For this reason, in the present embodiment, by providing the first length setting holes 23R, 23L and the second length setting holes 22R, 22L, the fracture load adjusting groove forming holes 24R-1 to 24R-3, 24L-1 ˜24L-3 is selected. The drilling positions of the first length setting holes 23R, 23L are determined at the same position in the width direction as the fracture load adjusting groove forming holes 24R-2, 24L-2, and the second length setting holes 22R, 22L are drilled. The position is determined at the same position as the fracture load adjusting groove forming holes 24R-1 and 24L-1.

  When the first length setting holes 23R and 23L are selected, the fracture load adjusting groove forming holes 24R-1 to 24R-2 and 24L-1 to 24L-2 are selected, and the second length setting holes 22R are selected. , 22L is selected, the fracture load adjusting groove forming holes 24R-1, 24L-1 are selected. When neither the first length setting holes 23R, 23L nor the second length setting holes 22R, 22L are selected, the fracture load adjusting groove forming holes 24R-1 to 24R-3 and 24L-1 to 24L-3 are used. Are all selected.

  FIG. 8 shows a state when the second length setting holes 22R and 22L are selected, and the upper frame support angle 9 is set to the second length setting provided in the side wall 17-2 of the buffer member 17. It exists in the position which plugs up all or one part of hole 22R, 22L. For this reason, since the welding site | part of the upper frame support angle 9 is the height L1, it turns out that a breaking strength needs to be enlarged now.

  Therefore, the operator confirms that all or part of the second length setting holes 22R and 22L are closed by the upper frame body support angle 9, and the breaking load adjusting groove forming hole 24R-1, 24L-1 is selected, and the length of the breaking load adjusting groove 18 is adjusted with a power saw.

  FIG. 9 shows a state when the first length setting holes 23R and 23L are selected, and the upper frame support angle 9 is set to the first length setting provided on the side wall 17-2 of the buffer member 17. It exists in the position which plugs up all or a part of hole 23R, 23L. For this reason, it turns out that it is necessary to make breaking strength smaller than what was mentioned above since the welding site | part of the upper floor frame support angle 9 is height L2 in the present state.

  Accordingly, the operator confirms that all or a part of the first length setting holes 23R, 23L are blocked by the upper frame support angle 9, and then sets the fracture load adjusting groove forming holes 24R-1 to 24R-1. 24R-2 and 24L-1 to 24L-2 are selected, and the length of the breaking load adjusting groove 18 is adjusted with a power saw.

  FIG. 10 shows a state in which the first length setting holes 23R and 23L and the second length setting holes 22R and 22L are not selected, and the upper frame support angle 9 is The first length setting holes 23R and 23L and the second length setting holes 22R and 22L provided in the side wall 17-2 are not in a position to close. For this reason, since the welding site | part of the upper frame support angle 9 is the height L3 in the present state, it turns out that it is necessary to make breaking strength still smaller than what was mentioned above.

  Therefore, the operator confirms that both the first length setting holes 23R and 23L and the second length setting holes 22R and 22L are not blocked by the upper floor frame support angle 9, and the fracture load adjusting groove All of the formation holes 24R-1 to 24R-3 and 24L-1 to 24L-3 are selected, and the length of the breaking load adjusting groove 18 is adjusted with an electric saw.

  Thus, according to the present embodiment, the length adjustment of the breaking load adjusting groove for setting the breaking strength of the buffer member according to the height of the welded portion of the upper floor frame support angle at the time of installation of the passenger conveyor Can be easily performed.

  Next, a fourth embodiment of the present invention will be described. In the fourth embodiment, as shown in FIGS. 11 to 13, instead of the breaking load adjusting groove 18 provided in the buffer member 17, The welding strength of the bottom wall 17-1 of the buffer member 17 and the welded portion W1 of the anchor plate 13 is adjusted. Since other configurations are the same as those of the first embodiment, description thereof is omitted. The welding strength is the strength when the buffer member 17 is peeled off from the anchor plate 13, in other words, it can be said to be the breaking strength at which the buffer member 17 breaks from the anchor plate 13.

  As described above, it is desirable that the breaking strength of the buffer member 17 is adjusted as described in the third embodiment. For this reason, in this embodiment, the above-described requirement is met by adjusting the welding strength between the buffer member 17 and the anchor plate 13. The welding strength can be adjusted by selectively adjusting the welding length between the buffer member 17 and the anchor plate 13.

  Based on this point of view, a specific example of adjusting the welding length of the buffer member 17 and the anchor plate 13 during construction for installing the passenger conveyor 1 will be described with reference to FIGS.

  As shown in FIGS. 11 to 13, there are a plurality of sides (sides opposite to the welded portion W2 to which the side wall 17-2 is welded) where the welded portion W1 of the bottom wall 17-1 of the buffer member 17 is formed. Here, it is divided into three sides 17-1A, 17-1B, and 17-1C. Although not shown, as in the third embodiment, the side wall 17-2 is displayed with a mark that can determine the number of welding points corresponding to the height of the welded portion of the upper frame support angle 9. ing.

  FIG. 11 shows a state where the welded portion of the upper floor frame support angle 9 shown in Example 3 has a height L1, and in this state, it is necessary to increase the breaking strength (= welding strength). ing. In this state, when the operator confirms that there are three welding locations, the welded portion of the sides 17-1A, 17-1B, and 17-1C divided into the three bottom walls 17-1 of the buffer member 17 is provided. W1-1 to W1-3 are welded. Therefore, the load acting from the upper frame support angle 9 is received by the three welds, so that the breaking strength is increased. That is, the welding strength is adjusted by the welding length of the three welds.

  FIG. 12 shows a state where the welded portion of the upper floor frame support angle 9 shown in Example 3 has a height L2, and in this state, it is shown that the breaking strength needs to be smaller than that described above. Yes. In this state, when the operator confirms that there are two welding locations, the welded portions of the sides 17-1A and 17-1C on both sides of the side divided into the bottom wall 17-1 of the buffer member 17 are divided. Weld two points W1-1 and W1-3. Therefore, since the load acting from the upper frame support angle 9 is received by the two welded portions, the breaking strength can be made smaller than that described above. In this example, the welding strength is adjusted by the welding length of the two welds.

  FIG. 13 shows a state where the welded portion of the upper floor frame support angle 9 shown in Example 3 has a height L3. In this state, it is shown that the breaking strength needs to be made smaller than that described above. ing. In this state, when the operator confirms that there is only one welding point, only the welded portion W1-2 of the central side 17-1B divided into three of the bottom wall 17-1 of the buffer member 17 is welded. To do. Accordingly, since the load acting from the upper frame support angle 9 is received by one welded portion, the breaking strength can be made smaller than that described above. In this example, the welding strength is adjusted by the weld length of one weld.

  Thus, according to the present embodiment, the welding length for fixing the buffer member to the anchor plate is selected and welded according to the height of the welded portion of the upper frame support angle at the time of installation of the passenger conveyor. The strength can be easily adjusted.

  Next, a fifth embodiment of the present invention will be described. In the fifth embodiment, as shown in FIGS. 14 to 16, the buffer member 17 shown in the fourth embodiment is divided into a plurality of parts. The function of adjusting the load from the upper frame support angle 9 is given depending on the number of members 17. Since other configurations are the same as those of the first embodiment, description thereof is omitted. As described in the fourth embodiment, the welding strength is the strength when the plurality of buffer members 17 are peeled off from the anchor plate 13, in other words, the breaking strength at which the plurality of buffer members 17 are broken from the anchor plate 13. .

  As described above, as described in the fourth embodiment, it is desirable to adjust the breaking strength of the buffer member 17. For this reason, in this embodiment, the welding strength is adjusted by selecting the number of the buffer members 17 so as to meet the above-mentioned demand. That is, the welding strength is equivalent to selectively adjusting the welding length between the anchor plates 13 by selecting the number of the buffer members 17, and the welding strength can be adjusted thereby.

  Based on this point of view, a specific example in which the number of the buffer members 17 is selected and the welding strength is adjusted during construction for installing the passenger conveyor 1 will be described with reference to FIGS.

  As shown in FIG. 14, the buffer member 17 is divided into a plurality of parts, and here, the buffer member 17 is divided into a maximum of three buffer members 17 </ b> A, 17 </ b> B, and 17 </ b> C. Although not shown, each of the divided buffer members 17A, 17B, and 17C has a side wall 17-2 at the height of the welded portion of the upper frame support angle 9 as in the third embodiment. Correspondingly, a mark for determining the number of welds is displayed. Therefore, it is necessary to confirm the height of the welded portion of the upper frame support angle 9 by attaching any of the buffer members 17A, 17B, and 17C1, and the number of the buffer members 17 can be confirmed at this time.

  FIG. 14 shows a state where the welded portion of the upper floor frame support angle 9 shown in Example 3 has a height L1, and in this state, it is necessary to increase the breaking strength (= welding strength). ing. In this state, when the operator confirms that three buffer members 17A, 17B, and 17C are necessary, the buffer members 17A, 17B, and 17C are welded by the welded portions W1-A to W1-C. Therefore, the load acting from the upper frame support angle 9 is received by the three welds, so that the breaking strength is increased. The upper frame support angle 9 and the side wall 17-2 of the buffer members 17A, 17B, and 17C are welded by welded portions W2-A, W2-B, and W2-C. In this example, the welding strength is adjusted by the welding length of three welds.

  FIG. 15 shows a state where the welded portion of the upper floor frame support angle 9 shown in Example 3 has a height L2, and in this state, it is shown that the breaking strength needs to be smaller than that described above. Yes. In this state, when the operator confirms that there are two welding locations, the two buffer members 17A, 17C out of the buffer members 17A, 17B, and 17C are welded by the welded portions W1-A, W1-C. To do. Accordingly, since the load acting from the upper frame support angle 9 is received by the two buffer members 17A and 17C, the breaking strength can be made smaller than that described above. The upper frame support angle 9 and the side wall 17-2 of the buffer members 17A and 17C are welded by welded portions W2-A and W2-C. In this example, the welding strength is adjusted by the welding length of the two welds.

  FIG. 16 shows a state where the welded portion of the upper floor frame support angle 9 shown in Example 3 has a height L3. In this state, it is shown that the breaking strength needs to be made smaller than that described above. ing. In this state, when the operator confirms that there is one welding point, one of the buffer members 17A, 17B, and 17C is welded with the welded portion W1-B. Accordingly, since the load acting from the upper frame support angle 9 is received by the single buffer member 17B, the breaking strength can be further reduced from that described above. The side wall 17-2 of the upper frame support angle 9 and the buffer member 17B are welded by a welded portion W2-B. In this example, the welding strength is adjusted by the weld length of one weld.

  In the above embodiment, the three buffer members 17A, 17B, and 17C are used. However, the buffer members 17A, 17B, and 17C may be further divided and the widths of the buffer members 17A, 17B, and 17C may be adjusted. Thus, the breaking strength can be adjusted.

  In the embodiment described above, the three buffer members 17A, 17B, and 17C have a configuration in which a flat plate is bent into an “L” shape. However, as shown in FIGS. The shape of the buffer members 17A, 17B, and 17C may be cylindrical. By doing so, the strength isotropic and the part shape may be a cylindrical shape, so that the effect of improving productivity can be expected. The cross section may be a rectangular shape instead of a cylinder.

  As described above, according to the present embodiment, the result and the welding length are adjusted by adjusting the number of the buffer members according to the height of the welding portion of the upper floor frame support angle at the time of installation of the passenger conveyor. Thus, the welding strength can be easily adjusted.

  Next, a sixth embodiment of the present invention will be described. In this sixth embodiment, the breaking load adjusting groove 18 shown in FIG. It is provided. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  As shown in FIG. 20, the buffer member 17 includes a side wall 17-2 having a low strength region 17-2W having a length in the height direction L4 and high strength regions 17-2S on both sides thereof. The low strength region 17-2W has the same function as the breaking load adjusting groove 18 of the first embodiment. The side wall 17-2 does not break up to a predetermined load, and when the predetermined load is exceeded, the side wall 17-2 does not break. It is intended to break.

  For example, the load in the longitudinal direction of the frame 4 generated in the upper floor frame support angle 9 due to a small-scale earthquake or a large-scale earthquake, and how much load the low-strength region 17-2W is The strength of the low-strength region 17-2W that can withstand the load generated in the upper frame support angle 9 due to a small-scale earthquake or a medium-scale earthquake may be selected.

  The low strength region 17-2W can be formed by reducing the thickness of this portion or by using a material having a strength lower than that of the material of the high strength region 17-2S. For example, a high carbon steel having a high carbon content can be used for the high strength region 17-2S, and a low carbon steel having a low carbon content can be used for the low strength region 17-2W. Thereby, the breaking strength of the buffer member 17 can be arbitrarily adjusted. These connections are possible by using welding or the like.

  In addition to this, as shown in FIG. 2, one of the buffer members 17 provided on the left and right is made of a high strength material and the other is made of a low strength material to adjust the number thereof, By adjusting the number of the buffer members 17 in a mixed configuration, the buffer members 17 can be adjusted not to break up to a predetermined load, but to break when the predetermined load is exceeded.

  In each embodiment described above, the passenger conveyor provided with a buffer mechanism between the upper floor frame support angle and the upper floor angle receiving portion has been described, but the upper floor frame support angle and the upper floor angle receiving portion, And it is good also as a passenger conveyor which provided the buffer mechanism in both the lower floor frame support angle and the lower floor angle receiving part.

  Alternatively, instead of providing a buffer mechanism between the upper floor frame support angle and the upper floor angle receiving portion, as a passenger conveyor provided with a buffer mechanism between the lower floor frame support angle and the lower floor angle receiving portion It ’s good.

  According to the present invention, the frame support angle and the angle pedestal are fixed between the frame support angle and the angle pedestal when no predetermined load acts between the frame support angle and the angle pedestal. When a load exceeding a specified level is applied between the frame support angle and the angle cradle, the frame support angle and the angle cradle are coupled with a cushioning member so that the frame support angle and the angle cradle can move relative to each other. The following effects can be obtained.

  In small-scale earthquakes and medium-scale earthquakes, the frame support angle and the angle pedestal do not receive a load greater than the specified load, so the frame support angle and the angle pedestal are fixed by the buffer member. The floor surface is not damaged. In addition, in a large-scale earthquake, the frame support angle and the angle pedestal are moved relative to each other because a load exceeding a predetermined level is applied to the frame support angle and the angle pedestal to break the buffer member. It is possible to prevent the passenger conveyor from being damaged or the angle receiving base from being damaged.

  DESCRIPTION OF SYMBOLS 1 ... Passenger conveyor, 2 ... Lower floor surface, 3 ... Upper floor surface, 4 ... Frame body, 5 ... Tread board, 6 ... Railing, 7 ... Hand rail, 8 ... Lower frame support angle, 9 ... Upper floor Frame support angle, 10 ... lower floor angle receiving section, 11 ... upper floor angle receiving section, 12 ... buffer mechanism, 13 ... anchor plate, 14 ... anchor bolt, 15 ... width direction stopper, 16 ... load bearing body, 17 DESCRIPTION OF SYMBOLS ... Buffer member, 18 ... Breaking load adjustment groove, 19 ... Breaking detection part, 20 ... Stress expansion hole, 22 ... 1st length setting hole, 23 ... 2nd length setting hole, 24 ... Breaking load adjustment groove formation Hole.

Claims (16)

A frame provided between one floor surface of the building and the other floor surface; frame support angles provided at both ends of the frame body; and the one floor surface and the other floor surface. An angle receiving portion that supports the frame body support angle, a tread plate that is disposed in the frame body and connected endlessly between the one floor surface and the other floor surface, and the frame body Passenger conveyor equipped with railings that are installed along the direction of travel on the left and right of the tread board,
When a predetermined load or more does not act between the frame and the angle cradle between the frame and the angle cradle, the frame and the angle cradle are fixedly coupled to each other. Passenger conveyor characterized in that when the load is applied between the frame body and the angle cradle, the frame body and the angle cradle are joined by a buffer member that is broken so that the frame body and the angle cradle can move relative to each other. . In claim 1,
The said buffer member is arrange | positioned between the said frame support angle and the said angle receiving stand, The passenger conveyor characterized by the above-mentioned. In claim 2,
The buffer member disposed between the frame support angle and the angle cradle is made of metal, and the buffer member includes a low-strength region and high-strength regions located on both sides thereof. One of the strength areas is coupled to the frame support angle, and the other of the high-strength areas is coupled to the angle cradle. In claim 3,
One of the high-strength regions is fixed by welding to the frame support angle, and the other of the high-strength regions is fixed by welding to an anchor plate fixed to the angle receiving base. In any one of Claim 3 thru | or 4,
The buffer member includes at least a bottom wall and a side wall standing from the bottom wall. The low strength region is formed in a part of the side wall and the others are used as the high strength region, and the bottom wall is the angle cradle. A passenger conveyor characterized in that it is fixed by welding to an anchor plate fixed to the frame, and the side wall is fixed by welding to the frame support angle across the low-strength region. In claim 5,
The low-strength region formed in a part of the side wall is formed by a groove or a hole formed in the side wall for adjusting the breaking strength. In claim 5,
The passenger conveyor, wherein the low-strength region formed in a part of the side wall is formed of a thin part formed in the side wall or a material having low breaking strength. In claim 3,
The buffer member includes at least a bottom wall and a side wall erected from the bottom wall, and a plurality of break load adjustment groove forming holes for forming a break load adjustment groove are formed in a part of the side wall, and the break load adjustment groove is formed. The low-strength region is formed by selectively notching a member between the formation holes, and the bottom wall is welded and fixed to an anchor plate fixed to the angle pedestal to sandwich the low-strength region. A passenger conveyor, wherein the side wall is fixed to the frame support angle by welding. In any one of Claim 3 thru | or 4,
The buffer member includes at least a bottom wall and a side wall erected from the bottom wall, and the bottom wall is fixed by welding to an anchor plate fixed to the angle cradle, and the side wall is sandwiched between the low strength regions. The frame support angle is welded and fixed, and a plurality of fracture load adjustment holes for forming the low-strength region are formed in a part of the side wall, and the frame support angle is connected to the side wall. The low-strength region having a predetermined breaking strength is formed by selectively notching a member existing between the plurality of holes for adjusting the breaking load according to the height of a portion to be welded. Passenger conveyor. In claim 9,
An index hole serving as an index for selectively notching a member existing between the plurality of breaking load adjustment holes is formed in a plurality of stages above the plurality of breaking load adjustment holes. The passenger conveyor is characterized in that a member existing between the plurality of holes for adjusting the breaking load is selectively cut out from a positional relationship between the frame support angle and the index hole. In any one of Claims 1 to 10,
The buffer member includes a low-strength region that breaks when a load greater than or equal to the predetermined value acts between the frame body and the angle cradle, and a break detection unit that electrically detects a break state of the low-strength region. Passenger conveyor characterized in that is provided. In claim 6,
A passenger conveyor characterized in that a breakage detection unit for electrically detecting a breakage state is provided in the vicinity of a groove or hole formed on the side wall for adjusting the breakage strength. In any one of claims 11 to 12,
When the breakage of the buffer member is detected by the breakage detector, the passenger conveyor drive is stopped by the safety device. In claim 2,
One of the buffer members is fixed to the frame support angle via a welded portion, and the other of the buffer members is fixed to an anchor plate provided on the angle receiving base via a welded portion, and the buffer member and the The weld length between the anchor plate is fixedly coupled to the frame support angle and the anchor plate when a predetermined load or more does not act between the frame support angle and the anchor plate. The passenger conveyor is selected so that the frame support angle and the angle pedestal can move relative to each other when the load is applied between the frame support angle and the anchor plate. . In claim 14,
The passenger conveyor is characterized in that a portion to be welded to the anchor plate is divided into a plurality of portions, and the welded length is selected by selectively welding the divided portions. In claim 14,
The passenger conveyor is divided into a plurality of buffer members, and a welding length is selected by welding a selected number of buffer members to the anchor plate.

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