JP5231944B2 - Passenger conveyor - Google Patents

Description

  The present invention relates to an escalator in which a step is generated in an inclined section between adjacent treads and a passenger conveyor such as an electric road in which a step is not generated between adjacent treads, and more particularly to a passenger conveyor having a devised frame.

  In recent years, in order to improve productivity, a frame of a passenger conveyor is a frame in which vertical members and diagonal members that connect between upper and lower chord members of a truss structure frame member are formed of steel plates, for example, in Patent Document 1 As proposed.

  On the other hand, instead of the upper and lower chords, connecting bars spaced vertically are used, steel plates are used instead of the vertical members and diagonal members of the truss structure frame, and the flanges extending in the vertical direction formed at the ends of the steel plates are used. Patent Document 2 proposes a frame that is formed by penetrating through the connecting bars that are spaced apart in the vertical direction.

JP-A-57-137283 JP 57-137281 A

  According to the frame described in Patent Document 1, since the steel plate is connected to the upper chord material and the lower chord material by welding, the steel plate is deformed by welding distortion, and is caused by work or deformation for removing the deformation of the steel plate. There has been a new problem that requires the work of adjusting the installation positions of the components.

  Further, according to Patent Document 2, since it is necessary to provide a flange on the steel plate in the vertical direction for connecting the connecting rods, this flange reduces the component installation space in the frame, and the frame of the passenger conveyor. There has been a problem that makes it difficult to install the components in the factory.

  An object of the present invention is to provide a passenger conveyor with good productivity that does not have a weld distortion of a frame body and a reduction in parts installation space in the frame body.

  In order to achieve the above object, the present invention comprises a side frame that is spaced apart from the left and right, a cross beam member that connects the left and right side frames, and a bottom plate, and a side The frame is composed of a U-shaped cross-section member having a top surface portion and a bottom surface portion formed by bending the upper and lower ends of a steel plate, and a reinforcing plate along the top surface portion, and the U-shaped member is the frame. It is divided into a plurality of parts in the longitudinal direction of the body, and a part of the bottom plate and the reinforcing plate are arranged across the division part of the U-shaped member, between the U-shaped member and the cross member, The U-shaped member and the bottom plate and the U-shaped member and the reinforcing plate are connected by screw fastening or room temperature rivet fastening.

  By adopting the above configuration, welding work can be omitted, so that productivity is improved, welding distortion does not occur, and there is no flange in the vertical direction, so the space for installing components in the frame is reduced. It will never be done.

  As described above, according to the present invention, it is possible to obtain a passenger conveyor with good productivity without welding distortion of the frame and reduction of the component installation space in the frame.

  Hereinafter, a first embodiment of a passenger conveyor according to the present invention will be described based on an escalator shown in FIGS.

  The escalator 1 includes a frame 4 installed across the upper floor 2 and the lower floor 3 of the building structure, a step and a step drive mechanism (not shown) that are housed and supported in the frame 4, a balustrade and a movement It is comprised from structural members, such as a handrail.

  The frame body 4 includes side frame bodies 5A and 5B that are spaced apart from each other on the left and right sides, and a cross beam member 6 and a bottom plate 7 that connect the side frame bodies 5A and 5B.

  The side frames 5A and 5B are each formed of a steel plate, and a U-shaped cross-section member having a top surface portion 5b and a bottom surface portion 5c formed by bending the upper and lower ends of the side plate 5a, and the top surface portion 5b. It is comprised by the reinforcement board 8 contact | abutted along and connected by screw fastening or normal temperature rivet fastening. The reinforcing plate 8 is divided into a plurality of parts, and is connected to the top surface part 5b so that the divided parts are in contact with each other.

  A plurality of the transverse beam members 6 are provided at intervals in the longitudinal direction of the frame body 4, the transverse member 6 a extending to the left and right, and the longitudinal member fixed to both ends of the transverse member 6 a and extending vertically. The vertical members 6b and 6c are connected to the left and right side plates 5a of the U-shaped member by screw fastening or room temperature rivet fastening.

  The bottom plate 7 is formed of a steel plate, and has a lateral surface portion 7a parallel to the bottom surface portion 5c, and flanges 7b and 7c formed by bending both ends of the lateral surface portion 7a along the width direction of the frame body 4. It consists of and. The heights of the flanges 7b and 7c are high enough to obtain rigidity capable of suppressing the bending due to the weight of the lateral surface portion 7a. And the edge part which opposes the left and right side surface board 5a of the said U-shaped member of the horizontal surface part 7a is connected with the right-and-left bottom face part 5c of the said U-shaped member by screw fastening or normal temperature rivet fastening.

  The frame body 4 configured as described above has an end frame body 4A, 4B and an intermediate frame body 4C positioned between the end frame bodies 4A, 4B in the longitudinal direction in consideration of transportation to an installation place. It is divided into and. In the present embodiment, the end frame bodies 4A and 4B have a part of a horizontal section and an inclined section. Therefore, the side frames 5A and 5B which are U-shaped members are also divided in the same manner.

  Therefore, the reinforcing plate 8 is connected to the top surface part 5b so as to straddle the divided portions of the divided side frame bodies 5A and 5B, thereby exhibiting a function as a connecting tool. On the other hand, the bottom plate 7 is also connected to the bottom surface portion 5c so as to straddle the divided portions of the divided side frames 5A and 5B, thereby exhibiting a function as a connecting tool.

  Here, the dimensional relationship between the frame 4 according to the present embodiment and the frame shown in Patent Document 1 when a standard escalator with an inclination angle of 30 degrees and a floor height of 6 m is assumed will be examined.

  First, in the frame body of Patent Document 1, the upper and lower chord members are L-shaped steel having a side dimension in the height direction of 125 mm, a side dimension in the width direction of 75 mm, and a thickness of 10 mm. When the interval was 1 m, each dimension of the present embodiment was set so as to correspond to it. That is, in the present embodiment, as shown in FIG. 2, the side dimension a in the width direction of the top surface portion 5b is 75 mm, and the height dimension b of the side plate 5a is 1 m. Next, the global load-like body of the frame body 4 can be regarded as both end support beams in which the end frame bodies 4A and 4B are engaged with the upper floor 2 and the lower floor 3, so that the side plate It is necessary to make the cross-sectional secondary moment around the width direction axis 5a equal to the value in the frame body of Patent Document 1. The plate thickness of the side plate 5a that satisfies this condition is calculated as 3.3 mm. In this case, the mass per unit length of the side plate 5a is equivalent to the sum of the upper and lower chords of Patent Document 1, but the cross-sectional secondary moment around the upper axis of the side plate 5a is about 50%. Is calculated.

  Here, loads such as passenger weight, step weight, balustrade weight and the like loaded on the side plate 5a via the cross beam member 6 or the like are usually directed downward to a position inside the frame body 4 from the centroid of the side plate 5a. Therefore, a vertical load and moment act on the side plate 5a. Among the moments, the component around the upper axis is an interaction with the compressive stress based on the above-described global load state that acts on the top surface portion 5b and the side plate 5a in the vicinity thereof. There is a risk of causing out-of-plane deformation such as buckling in the side plate 5a. In particular, as described above, this fear increases when the secondary moment of inertia about the upper axis is reduced to about 50%.

  Therefore, in order to avoid such a risk of buckling, the reinforcing plate 8 is provided along the top surface portion 5b in the present embodiment. And in order to make the external dimensions of the frame 4 in the present embodiment, the cross-sectional secondary moment around the width direction axis, and the cross-sectional secondary moment around the upper direction axis equivalent to the frame body of Patent Document 1, It was calculated that the plate pressure of the side plate 5a should be 2.5 mm and the plate pressure of the reinforcing plate should be 6 mm. At this time, if the mass per unit length is 100% of the sum of the upper chord member and the lower chord member in the frame body of Patent Document 1, the sum of the side plate 5a and the reinforcing plate 8 is 87%. For this reason, in this Embodiment, weight reduction is attained compared with the frame of patent document 1. FIG.

  Of the moment acting on the side plate 5a due to the shift of the load acting position and the centroid of the side plate 5a, the components around the longitudinal axis of the frame 4 are the cross beam member 6 and the bottom plate 7. You can counter it. The vertical members 6b and 6c of the cross beam member 6 have sufficient rigidity around the longitudinal axis of the frame and function as a reinforcing material for the side plate 5a. The horizontal member 6a and the bottom plate 7 of the cross beam member 6 suppress the entire side plate 5a from being twisted around the longitudinal axis of the frame 4 by the action of the vertical members 6b and 6c. In consideration of such a function, the bottom plate 7 does not need to be provided over the entire longitudinal direction of the frame body 4, and is disposed with a gap in the longitudinal direction. Preferably, a part of the bottom plate 7 is a frame. It is good to provide in the position corresponding to the cross beam member 6 with respect to the longitudinal direction of the body 4.

  By the way, in this Embodiment, the division location of the frame 4 was provided in two places in the inclination area. By dividing in this way, even if the installation interval (floor height) is different for each building structure, only the length of the intermediate frame 4C is changed without changing the shape of the end frame 4A, 4B. This can help improve productivity. When configured in this way, the reinforcing plate 8 is divided at the central portion in the longitudinal direction of the intermediate frame 4C. With this structure, the upper folding point 4AD that is structurally discontinuous and It is possible to effectively reduce the out-of-plane deformation of the side plate 5a at the lower folding point 4BD.

  On the other hand, the dividing position of the reinforcing plate 8 may be a position facing the central portion in the longitudinal direction of the intermediate frame 4C, the upper folding point 4AD, and the lower folding point 4BD. By adopting such a structure, even if the installation interval (floor height) differs for each building structure, the portion from the engagement position between the end frame 4A and the upper floor 2 to the upper folding point 4AD Further, it is not necessary to change the dimension of the reinforcing member 8 facing the portion from the engagement position between the end frame 4B and the lower floor 3 to the lower folding point 4BD, and the productivity is improved.

  Next, a second embodiment of the present invention will be described with reference to FIG. The same reference numerals as those in FIGS. 1 to 3 indicate the same components, and thus detailed description thereof is omitted.

  In the present embodiment, the configuration different from the first embodiment is that the intermediate frame 4C positioned between the end frame 4A and the end frame 4B is further divided to provide intermediate frames 4D and 4E. It was. The intermediate frames 4C and 4D have the same length, and the intermediate frame 4E is shorter than the intermediate frames 4C and 4D.

  By configuring in this way, it is possible to easily cope with installation locations having different floor heights. That is, in the installation place where the floor height is low, the end frame bodies 4A and 4B and the intermediate frame body 4C are connected to form the frame body 4, and when the floor height is higher than that, When the frame 4 is configured by connecting the part frames 4A, 4B and the intermediate frames 4C, 4D, and the floor height is high, the end frames 4A, 4B and the intermediate frames 4C, 4D, 4E is connected and the frame 4 is comprised, The installation to the building structure from which three kinds of floor heights differ becomes possible. If intermediate frames 4E and 4B and intermediate frames 4C and 4D are used as standard intermediate frames if intermediate frames 4E are prepared as intermediate frames for length adjustment and intermediate frames of various lengths are prepared. The productivity of the frame 4 can be improved.

  In the present embodiment, the intermediate frame 4C is further divided and the intermediate frames 4D and 4E are provided. However, the intermediate frame 4C is provided between the end frame 4A and the end frame 4B. Further, an intermediate frame 4D having the same length as the intermediate frame 4C and an intermediate frame 4E shorter than the intermediate frame 4C may be newly added.

  FIG. 5 shows a third embodiment according to the present invention, in which the frame body 4 is positioned at the upper folding point 4AD and the lower folding point 4BD, in other words, between the horizontal section and the inclined section of the frame body 4. The end frame bodies 4A1 and 4B1 and the intermediate frame body 4C1 divided in the above are provided and connected to each other.

  By configuring the frame body 4 in this way, in the first and second embodiments, the end frame bodies 4A, 4B include the upper folding point 4AD and the lower folding point 4BD, and the side frame bodies 5A, The fact that the U-shaped cross-section member constituting 5B has a complicated shape can be simplified, and the productivity of the U-shaped cross-section member can be simplified and the productivity can be improved.

  FIG. 6 shows a fourth embodiment according to the present invention, in which an improved U-shaped member is added. That is, the top end portion of the top surface portion 5b formed by bending the upper end portion of the side surface plate 5a is further bent toward the bottom surface portion 5c side to form the reinforcing portion 5d substantially parallel to the side surface plate 5a.

  Thus, by providing the reinforcing portion 5d on the top surface portion 5b, it is possible to reduce the out-of-plane deformation of the top surface portion 5b, and as a result, by securing the second moment of section around the upper axis, Such buckling can be effectively suppressed.

  FIG. 7 shows a fifth embodiment according to the present invention. In FIG. 7, the same reference numerals as those in FIG.

  In addition to the configuration of FIG. 3 of the first embodiment, the contact plates 9 and 10 are abutted from the front and back across the side plate 5a and the top surface portion 5b of the divided U-shaped member, and these are screw-fastened. And it was connected by room temperature rivet fastening. The contact plate 9 is formed in an L shape having a vertical surface portion 9a that contacts the side surface plate 5a and a lateral surface portion 9b that contacts the top surface portion 5b, and the contact plate 10 contacts only the side surface plate 5a. Is. Accordingly, the side plate 5a of the divided U-shaped member is sandwiched and reinforced by the vertical surface portion 9a of the backing plate 9 and the backing plate 10, and the divided portion of the top surface portion 5b is the lateral surface portion 9b of the backing plate 9. The reinforcing plate 8 is sandwiched and reinforced.

  Further, since the reinforcing plate 8 is divided at a portion other than the dividing position of the U-shaped member, the contact plate 11 is brought into contact with the divided portion, the reinforcing plate 8 is sandwiched between the top surface portion 5b, and these are screwed. And connected by room temperature rivet fastening.

  Thus, the contact plates 9 to 11 are brought into contact with and connected to the respective divided portions, so that the out-of-plane deformation in the divided portions can be reduced. If the out-of-plane deformation is sufficiently small, one or more of the contact plates 9 to 11 may be omitted. However, when the contact plate 10 is omitted, the contact plate 9 may be a flat plate having only the lateral surface portion 9b.

  In each embodiment described above, the reinforcing plate 8 and the contact plates 10 and 11 are in contact with the inside of the frame body, and the contact plate 9 is in contact with the outside, but the contact positions thereof are specified. However, the reinforcement effect does not change even if the inner / outer contact positions are changed as appropriate.

  By the way, although each said description demonstrated the escalator as an example as a passenger conveyor, it cannot be overemphasized that it can apply also to an electric road.

The schematic side view of the frame of the escalator which shows 1st Embodiment of the passenger conveyor by this invention. The enlarged longitudinal cross-sectional view by the AA line of FIG. The perspective view of the side frame body of the one side of the frame body shown in FIG. The equivalent figure of FIG. 1 which shows 2nd Embodiment of the passenger conveyor by this invention. The equivalent figure of FIG. 1 which shows 3rd Embodiment of the passenger conveyor by this invention. The expanded sectional view of the cross-sectional U-shaped member which shows 4th Embodiment of the passenger conveyor by this invention. FIG. 3 is a view corresponding to FIG. 3 showing a fifth embodiment of a passenger conveyor according to the present invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Escalator, 2 ... Upper floor, 3 ... Lower floor, 4 ... Frame, 4A, 4B ... End frame, 4C-4E ... Intermediate frame, 5A, 5B ... Side frame, 5a ... Side plate 5b ... Top surface portion, 5c ... Bottom surface portion, 6 ... Cross beam member, 7 ... Bottom plate, 6a ... Horizontal member, 6b, 6c ... Vertical member, 7a ... Horizontal surface portion, 7b, 7c ... Flange, 8 ... Reinforcement plate, 9 to 11: a backing plate, 9a: a vertical surface portion, 9b: a horizontal surface portion.

Claims (8)

In a frame installed in a building structure and a passenger conveyor in which constituent members are installed in the frame, the frame connects the left and right side frames and the side frames arranged separately from each other on the left and right. Cross-beam members and a bottom plate, the side frame body is a U-shaped cross-section member having a top surface portion and a bottom surface portion formed by bending the upper and lower ends of a side plate formed of a steel plate , is composed of a along the top surface contact with the reinforcing plate, also the U-shaped cross section member is divided into a plurality in the longitudinal direction of the frame part and the reinforcing plate of the bottom plate is disposed across the dividing portion of the U-shaped section member, between the U-shaped cross-section member and crossbeam member, said U-shaped cross section member and the bottom plate, and said U-shaped section member between the reinforcing plate connected by screw fastening or cold riveting, the top portion Reinforcing portion by bending the tip in the bottom portion side is formed, the plate against the front and back over the split portion of the side plates are abutting, these side plates and the front and back of the wear plate is screwed or cold riveting The contact plate connected by fastening and in contact with the outside of the side plate is bent so as to contact the upper surface of the top surface portion, and the top surface portion is bent by the bent portion of the contact plate and the reinforcing plate. Passenger conveyors characterized in that they are connected by screw fastening or room temperature rivet fastening . The reinforcing plate, according to claim 1 Symbol placement of the passenger conveyor, characterized in that it is divided in the longitudinal direction of the frame. 3. A passenger conveyor according to claim 2, wherein a contact plate is abutted from the side opposite to the top surface portion across the divided portion of the reinforcing plate and is connected by screw fastening or room temperature rivet fastening. The said frame is divided | segmented into the edge part frame formed in a longitudinal direction both ends, and the intermediate | middle frame located between these edge part frames, The any one of Claims 1-3 characterized by the above-mentioned. Passenger conveyor as described in. The passenger conveyor according to claim 4 , wherein the intermediate frame is divided into a plurality of parts in the longitudinal direction of the frame . The intermediate frame divided into a plurality has a standard length intermediate frame and a length adjusting intermediate frame having a different length from the standard length intermediate frame. The passenger conveyor according to claim 5 . The passenger conveyor according to claim 4 , wherein the end frame is divided from the intermediate frame between a horizontal section and an inclined section. In a passenger conveyor which is installed tilted by, said end frame body, passengers conveyor according to claim 4, wherein a portion of the horizontal section and the inclined section.

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