JP5779255B2 - Passenger conveyor - Google Patents

Description

  The present invention relates to an escalator device that connects each level of a building such as a railway station building or a department store, and a passenger conveyor represented by an electric road used in an airport or the like, and in particular, a main frame comprising a pair of side frames. The present invention relates to a passenger conveyor having a body.

  In general, it is difficult to manufacture the main frame of a passenger conveyor in an integrated structure and transport it to a building site such as a building from the viewpoint of installation site restrictions or transportation. The main frame was manufactured by dividing it into individual pieces and assembled and installed using connecting bolts at the installation site.

  A passenger conveyor provided with such a main frame has already been proposed, for example, as described in Japanese Patent Application Laid-Open No. 52-137880 (Patent Document 1). As described above, this main frame is divided in the longitudinal direction in consideration of mounting, transportation, and carrying-in to the installation site. And the divided | segmented main frame body is made into an integral structure by abutting both and fastening and fixing with a connection bolt etc. using a joint member.

  For example, in the case of an escalator device, the main frame is spanned over a support provided at each level, and a plurality of treads and handrails that move while circulating, and further, a driving machine and a guide for driving them. Support the mechanism.

JP-A-52-137880

  The main frame of the passenger conveyor includes support portions at both ends of the main frame, depending on the weight of the main frame itself, the weight of storage equipment such as the step board, the moving handrail, the driving machine and the guide mechanism described above, and the weight of the passenger. It is bent and deformed like a both-ends support beam with fulcrum as the fulcrum.

  That is, the stress in the longitudinal direction of the side frame constituting the main frame becomes a large compressive stress as it approaches the top surface, and becomes a large tensile stress as it approaches the bottom.

  Therefore, in the technique proposed in Patent Document 1, a flat joint member is formed on the flange portion and the lateral side surface portion of the H-shaped steel material which is the top surface portion and the bottom surface portion of each side frame body in the divided portion of the side frame body. Are provided, and the divided side frames are connected to the joint member by connecting bolts to form an integral structure.

  In such a structure, the load transmitted through the divided portion is concentrated on the joint member, particularly the joint member provided in the flange portion. Therefore, the thickness or flange of the H-shaped steel material to which the joint member is fastened and fixed. The width of the portion has to be increased to improve the mechanical strength, leading to an increase in the weight of the main frame including the side frames.

  That is, it is known that stress is generated toward the end portion in the thickness direction in the both-end support beams, and the stress distribution of the side frame body shows the same tendency. The passenger conveyor is provided with flange-shaped top and bottom surfaces on the side frame because of its structure, and a large compressive stress is generated in the joint member on the top surface, and a large tensile stress is applied to the joint member on the bottom surface. Has occurred.

  And in order for the joint member in the division | segmentation part of this top | upper surface part and a bottom face part to endure the load by this stress, it is necessary to use a large diameter connection bolt or many connection bolts.

  However, since the main frame consisting of a pair of side frames sandwiches the escalator device and the tread of the electric road and needs to be configured compactly, the width of the top and bottom surfaces of the side frames is limited.

  Therefore, the width of the joint member that connects the top surface portion and the bottom surface portion of the divided side frame is also limited, and it is difficult to apply a large-diameter connection bolt, and it is necessary to fasten with a large number of connection bolts.

  At this time, since the width of the top surface portion and the bottom surface portion is narrow, the number of connecting bolts connected to the joint member is naturally limited, but it is necessary to arrange them in a plurality of rows in the longitudinal direction of the side frame.

  However, in connection bolt groups arranged in a plurality of rows, a large load based on stress acts on the connection bolts arranged on both ends of the connection bolt group, and the load does not act so much on the connection bolts near the center of the connection bolt group. Therefore, there is a limit to the number of connecting bolts that receive loads effectively.

  For this reason, the load which can support a side frame is restrict | limited by restrict | limiting the number of connection bolts. For example, the subject that the floor height (difference of the height of a boarding / alighting gate) applicable in an escalator apparatus is restrict | limited arises. As the floor height is larger, the load increases, which is disadvantageous for the escalator device of the station building and the deep subway.

  In order to avoid such a problem, it is conceivable to increase the support load per connection bolt by increasing the thickness of the connection bolt and increasing the thickness of the side frame and the joint member, In particular, an increase in the thickness of the side frame caused an increase in mass, which was not preferable.

  An object of the present invention is to provide a passenger conveyor that suppresses an increase in the thickness of a side frame that constitutes a main frame and can connect the divided side frames.

  A feature of the present invention is that the side portions of each divided side frame are fixed by overlapping flat plate joints, and the bottom portions of each divided side frame are attached to the flexible portion and both sides of the flexible portion. The flat part of a flexible joint having a flat part positioned is overlapped and fixed, and a vertical load is borne by a flat joint.

  According to the present invention, it is possible to obtain a passenger conveyor that is reduced in weight and capable of connecting the divided side frames to each other while suppressing an increase in the thickness of the side frames constituting the main frame. .

It is side surface sectional drawing of the escalator apparatus as a passenger conveyor to which this invention is applied. It is sectional drawing which cut | disconnected the main frame of the escalator apparatus which becomes one Example of this invention by the surface at right angles to a longitudinal direction. It is the sectional side view which cut | disconnected the main frame body to the longitudinal direction and represented one side frame body side. FIG. 4 is an enlarged view of a butt connection portion shown in FIG. 3. It is sectional drawing which shows the VV cross section of FIG. It is an external appearance perspective view which shows one Example of the connection member attached to the bottom face part of a side frame. It is an external appearance perspective view which shows the other Example of the connection member attached to the bottom face part of a side frame. It is an external appearance perspective view which shows the further another Example of the connection member attached to the bottom face part of a side frame.

  Hereinafter, the present invention will be described with reference to the drawings. First, an overall configuration of a passenger conveyor targeted by the present invention will be described with reference to FIG.

  The present embodiment relates to an escalator device which is a kind of passenger conveyor, and the overall configuration is as shown in FIG.

  In this escalator device 1, a large number of treads (also called steps or steps) 2 are connected endlessly and circulated to transport passengers between an upper floor 3 and a lower floor 4.

  Further, the escalator device 1 is located on both sides in the width direction of the tread board 2, a main frame 5 installed in the building structure, a handrail 6 provided for the safety of passengers and moving in synchronization with the tread board 2. The balustrade 7 is provided to support the handrail 6 and to stand along the longitudinal direction of the frame body 5.

  The boarding / exiting floors 8 and 9, the handrail 6, the balustrade 7 and the like are supported by the main frame body 5. 8 and lower floor getting on and off 9) are fixed.

  The main frame 5 of the escalator device 1 includes an upper floor getting on / off floor 8 and a lower floor getting on / off floor 9 on which a user gets on and off, and an inclined portion 10 that connects them. Further, a drive machine 12 is installed in the upper floor machine room 11 in the upper floor getting on / off floor 8 to drive the drive sprocket 13.

  On the other hand, a driven sprocket 15 is installed in the lower floor machine room 14 in the lower floor getting-on / off floor 9, and an endless chain 16 is wound between the upper and lower drive sprockets 13 and the driven sprocket 14 to drive continuously. It is supposed to be. An axle 17 is connected to the chain 16 at equal intervals, and each tread plate 2 is attached to the axle 17.

  Next, the configuration of the main frame targeted by the present invention will be described with reference to FIGS. As shown in FIG. 2, the main frame 5 of the passenger conveyor constituting the escalator device is made of a steel plate, and a pair of left and right side frames 18 and 19 are connected by a cross beam 20 and a bottom member 21. The cross section is formed in a substantially U shape. The side frames 18 and 19 and the cross beam 20 and the bottom member 21 are firmly fixed by fixing bolts 22.

  The left and right side frames 18 and 19 are obtained by bending a steel plate into a U-shaped cross section, and on the side surfaces 18A and 19A parallel to the vertical surface and on the upper side of the side surfaces 18A and 19A. The top surface portions 18B and 19B are bent at a substantially right angle and located at the upper side, and the bottom surface portions 18C and 19C are bent at a substantially right angle and located below the side surface portions 18A and 19A.

  In general, in the escalator device, it is desired to reduce the occupied volume, that is, to reduce the cross-sectional dimension of the main frame 5. However, since the tread 2 circulates in the main frame 5. The cross-sectional dimensions of the main frame 5 of the escalator apparatus that is actually used are such that the height H of the lateral side surface portions 18A and 19A is about 1 m, and the width Tu of the top surface portions 18B and 19B is about 0.1 mm. The width Tb of the bottom surface portions 18C and 19C is also about 0.1 m.

  Therefore, the side surface portions 18A and 19A of the side frames 18 and 19 obtained by bending the steel plate, the top surface portions 18B and 19B, and the bottom surface portions 18C and 19C have the same plate thickness, and thus the cross-sectional areas of the side surface portions 18A and 19A. Is about 10 times the cross-sectional area of the top surface portions 18B and 19B and the bottom surface portions 18C and 19C. Actually, the cross-sectional areas of the side portions 18A and 19A are often larger.

The present invention makes use of this large difference in cross-sectional area to suppress the increase in the thickness of the side frames 18 and 19 that are the object of the present invention, and passengers capable of connecting the divided side frames. A conveyor is provided. (This will be described later.)
As described above, the side frames 18 and 19 formed in this way are divided into two or more in the longitudinal direction of the side frames 18 and 19 from the viewpoint of restriction of the installation site and transportation, and are integrated at the installation site. Assembled into.

  FIG. 3 shows the side frame 19 side by cutting the main frame 5 in the longitudinal direction. Note that the other side frame body 18 has substantially the same configuration and is not shown. The divided side frames 19 are fixed and connected to each other by a joint member at the butt connection portion 23.

  The joint member is a so-called accessory plate, and is bent in the center where the side surface portion 19A is fixed to the flat plate-shaped joint member (hereinafter referred to as a flat plate joint) 24 and the top surface portion 19B is fixed to each other. A joint member (hereinafter, referred to as a flexible joint) 25 having a portion and a flexible joint 26 which is a joint member having a flexible portion at the center similarly to the flexible joint 25 which fixes the bottom surface portion 19C to each other.

  FIG. 4 shows an enlarged view of the butt connection portion shown in FIG. FIG. 5 is a cross-sectional view showing the VV cross section of FIG. 4 and shows the structure on the bottom surface side. The end surfaces 19D of the two divided side frame bodies 19 are butted with a predetermined distance S. A rectangular plate joint 24 having a length L1 and a width W1 is applied to the side surface portion 19A of each side frame body 19 so as to overlap, and a connecting bolt 27 (a rivet is also a fixing means) near each end surface 19D. In this embodiment, it is expressed as a connection bolt including rivets in this embodiment, and the plate joint 24 and the vicinity of the end surfaces 19D of both side frame bodies 19 are firmly fixed. In this specification, the length direction of the plate joint 24 is defined as the longitudinal direction of the passenger conveyor in the main surface of the plate joint 24, and the width direction is orthogonal to the length direction in the main surface of the plate joint 24. It is defined as direction.

  Further, a flexible joint 25 having a length L2 and a width W2 having a pair of flat surface portions 25A and a square-shaped flexible portion 25B is applied to the top surface portion 19B of each side frame body 19 so as to overlap each other. In the vicinity of 19D, the connection bolt 27 firmly fixes the flat portion 25A of the flexible joint 25 and the vicinity of the end surfaces 19D of both side frames 19 to each other. In the present specification, the length direction of the flexible joint 25 is defined as the longitudinal direction of the passenger conveyor within the main surface of the flat portion 25A of the flexible joint 25, and the width direction is within the main surface of the flat portion 25A of the flexible joint 25. In the direction perpendicular to the length direction. In FIG. 4, the width W2 is not shown because it is a dimension perpendicular to the paper surface. The size of the width W2 is usually less than or equal to the width W4 of the inner surface of the top surface portion 19B obtained by subtracting the thickness of the side surface portion 19A from the width Tu of the outer surface of the top surface portion 19B, but is not limited to this. Absent.

  Similarly, a flexible joint 26 having a length L3 and a width W3 having a pair of flat portions 26A and a square-shaped bent portion 26B is applied to the bottom surface portion 19C of each side frame 19 so as to overlap each other. In the vicinity of the end face 19D, the connection bolt 27 fixes the flexible joint 26 and the vicinity of the end faces 19D of both side frames 19 firmly. In this specification, the length direction of the flexible joint 26 is defined as the longitudinal direction of the passenger conveyor in the main surface of the flat portion 26A of the flexible joint 26, and the width direction is within the main surface of the flat portion 26A of the flexible joint 26. In the direction perpendicular to the length direction. In FIG. 4, the width W3 is not shown because it is a dimension perpendicular to the paper surface. The size of the width W3 is usually less than or equal to the width W4 of the inner surface of the bottom surface portion 19C obtained by subtracting the thickness of the side surface portion 19A from the width Tb of the outer surface of the bottom surface portion 19C, but is not limited to this. Absent. As will be described later, the width W3 may be larger than the width W4 (see FIG. 5) for another reason.

  Here, the size of the flat joint 24 and the number of connecting bolts are determined so as to withstand the maximum design load acting on the main frame 5. In other words, the load in the vertical direction is largely borne by the plate joint 24, thereby reducing the influence of the vertical load on the flexible joints 25 and 26.

  Therefore, if the width W1 of the flat joint 24 is increased to increase the overlapping portion with the side surface portion 19A and the number of the connecting bolts 27 is increased, the load applied to these connecting bolts 27 can be dispersed. The load applied to can be reduced.

  As described above, since the cross-sectional area of the side surface portion 19A is 10 times or more than the cross-sectional area of the top surface portion 19B and the bottom surface portion 19C, the plate joint 24 can be increased accordingly. The divided side frames 19 can be connected without increasing the plate thickness.

  On the other hand, the flexible joints 25 and 26 provided on the top surface portion 19B and the bottom surface portion 19C are deformed so as to be bent by the flexible portions 25B and 26B when a compressive stress generated near the top surface portion 19B or a tensile stress generated near the bottom surface portion 19C is applied. Therefore, the rigidity per unit width is smaller (lower) than that of the flat plate joint 24. Therefore, when a large load is applied to the main frame body 5, the flexible joints 25 and 26 are bent, but the load is received by the flat joint 24.

  In the above configuration, when a load acts on the side frame body 19 as described above, the top surface portion 19B side of the plate joint 24 contracts in the longitudinal direction of the side frame body 19 and the bottom surface portion 19C side in the longitudinal direction of the side frame body 19. Elongate. That is, stress is generated in this portion.

  As described above, since the tensile stress acts particularly on the bottom surface portion 19C, it is important to secure the strength.

  Then, when the bottom surface portion 19C side extends, the angle of the rectangular portion of the bending portion 26B of the bending joint 26 is deformed so that the rigidity per unit width is smaller (lower) than that of the flat plate joint 24. Therefore, even if a load is applied to the bottom surface portion 19C, the flexible portion 26B of the flexible joint 26 is deformed, and the plate joint 24 fixed to the side surface portion 19A settles in a load distribution state in which the load is applied.

  Similarly, when the top surface portion 19C is contracted, the angle of the rectangular portion of the flexible portion 25B of the flexible joint 25 is deformed, and as a result, the rigidity per unit width is smaller (lower) than that of the flat joint 24. . Accordingly, even if a load is applied to the top surface portion 19B, the bending portion 25B of the bending joint 25 is deformed, and the flat joint 24 fixed to the side surface portion 19A is settled in a load distribution state in which the load is applied.

  Thus, since the load due to the stress in the longitudinal direction of the side frame 19 hardly acts on the flexible joint 26, the load on the connecting bolt 27 for fixing the flexible joint 26 can be reduced, and the bottom surface portion 19C It is not necessary to increase the thickness and width, and the problem of weight increase does not occur (in contrast, the rigidity per unit width as in the flexible joint 26 is not small (low) in the bottom surface portion 19C. When a joint having a rigidity per unit width equal to or greater than that of the flat plate joint 24 is used, a problem arises that a large load is applied to the connecting bolt 27 that fixes the joint of the bottom surface portion 19C. Although the load applied to the flat joint 24 fixed to the side surface portion 19A is large, the size of the side surface portion 19A is considerably larger than the top surface portion 19B and the bottom surface portion 19C, so this can be dealt with by increasing the number of connecting bolts 27. Is possible.

  In the present embodiment, the flexible joints 25 and 26 are attached to both the top surface portion 19B and the bottom surface portion 19C, but basically, it may be attached to the bottom surface portion 19C to which tensile stress is applied.

  Next, it is the load in the vertical direction as described above that mainly acts on the main frame of the escalator device described in the present embodiment, but a lateral load may be applied by an external force such as an earthquake.

  A structure in which the top surface portion 19B and / or the bottom surface portion 19C of the side frame body 19 resists the lateral load may be configured, and the width W3 of the flexible joint 26 of each of the side frame body 18 and the side frame body 19 is sufficient. It is also possible to employ a structure (shared flexible joint 28) that also functions to connect the side frame body 18 and the side frame body 19 to each other. Since the lateral load can be received by the cross beam 20 and the bottom member 21 in FIG. 2, if the cross beam 20 and the bottom member 21 have sufficient lateral strength, the common flexible joint 28 is not used. Independent bending joints 26 may be provided for each of the side frame 18 and the side frame 19.

  In FIG. 5, a flat surface portion 28A of a common flexible joint 28 formed integrally with the bottom surface portion 18C of the side frame body 18 and the bottom surface portion 19C of the side frame body 19 has a bottom surface portion 18C, a bottom surface portion 19C and a connecting bolt. 27 is firmly tightened and fixed.

  Further, as shown in FIG. 4, a bending portion 28 </ b> B having a square cross section is formed at the center of the common bending joint 28, and has the same function as the bending joint 26 described in FIG. 4.

  As described above, since the side frame 18 and the side frame 19 are connected by the common flexible joint 28, the lateral rigidity is improved so as to withstand even if a large lateral load is applied. When the common flexible joint 28 is provided on the top surface portions 18B and 19B, the treads interfere with each other. Therefore, the common flexible joint 28 is provided only on the bottom surface portions 18C and 19C (that is, the flexible joint 25 is similar to the common flexible joint 28). Not structure).

  FIGS. 6 to 8 show the shape of the common flexible joint 28. FIG. 6 shows the common flexible joint used in FIG. 5, and the plane portion 28A and the cross section are rectangular (however, the side connected to the plane portion 28A). (Not shown) is provided.

  Further, it is desirable that a part of the flat surface portion 28A is fixed to the bottom surface portions 18C and 19C of the side frames 18 and 19, and the flat surface portion 28A and the bending portion 28B are integrally formed over the entire width W3. The same applies to FIGS. 7 and 8. Instead of being integrally formed, the two independent flexible joints 26 may be connected by another member to form a common flexible joint 28.

  In addition, the common flexible joint 29 shown in FIG. 7 is provided with a flat portion 29A and a flexible portion 29B having a triangular cross section (however, the side portion connected to the flat portion 29A is omitted).

  In addition, the common flexible joint 30 shown in FIG. 8 is provided with a flat portion 30A and a flexible portion 30B having a cross-section protruding outwards in an arc shape (however, the side portion connected to the flat portion 29A is omitted). ing.

  The flexible joint 29 and the flexible joint 30 shown in FIGS. 7 and 8 both have the same functions and operations as the common flexible joint 28 shown in FIG.

Depending on the specifications of the passenger conveyor, the common flexible joints shown in FIGS. 6 to 8 may be used in combination.
Further, the shapes of the flexible portions 25B and 26B of the normal flexible joints 25 and 26 that do not have a function of connecting the side frame body 18 and the side frame body 19 to each other are triangular as shown in FIGS. You may make it like the bending part 29B and the bending part 30B whose cross section is circular arc shape.
In the embodiment, the flexible joint 26 having the flexible portion 26B is used as means for setting the rigidity per unit width of the flat joint 24 in the side surface portion 19A to be larger than the rigidity per unit width of the joint in the bottom surface portion 19C. However, the present invention is not limited to this, and by making at least one of the material and the plate thickness as a joint in the bottom surface portion 19C different from the flat joint 24, the rigidity per unit width of the flat joint 24 in the side surface portion 19A is larger than the rigidity per unit width. A joint having a small rigidity may be used. In that case, it is also possible to use a flat plate joint without a bending part as a joint in the bottom face part 19C.

  As described above, according to the present invention, it is possible to suppress the increase in the plate thickness of the side frames constituting the main frame, and to provide a passenger conveyor capable of connecting the divided side frames. it can.

  5 ... main frame, 18, 19 ... side frame, 18A, 19A ... side face, 18B, 19B ... top face, 18C, 19C bottom face, 20 ... cross beam, 21 ... bottom member, 23 ... butt joint , 24 ... Plate joint, 25, 26 ... Deflection joint, 25A, 26A ... Planar portion, 25B, 26B ... Deflection portion, 28 ... Common bending joint.

Claims (10)

A side frame having a side surface, a top surface bent from the upper end of the side surface, and a bottom surface bent from the lower end of the side surface is divided into at least two, and the divided side frames are joined together. In a passenger conveyor provided with a pair of side frames fixed in step, a tread plate disposed between the pair of side frames, and a drive mechanism for driving the tread plate,
The side portions of each of the divided side frame bodies are fixed by fixing means with overlapping flat joints,
The bottom portion of each of the divided side frame bodies is fixed by a fixing means by overlapping the flat portions of a flexible joint having a bent portion and flat portions located on both sides of the bent portion. And passenger conveyor. In the passenger conveyor according to claim 1,
The top surface portion of each of the divided side frame bodies is fixed by a fixing means by overlapping flat joints, or a flexible joint having a flexible portion and flat portions located on both sides of the flexible portion. A passenger conveyor, wherein the flat portions are overlapped and fixed by fixing means. In the passenger conveyor according to claim 1 or 2,
The shape of the bending part of the said flexible joint is a passenger conveyor characterized in that the cross section is a square shape, the cross section is a triangular shape, and the cross section is an arc shape. In the passenger conveyor in any one of Claim 1 to 3,
The passenger joint, wherein the flexible joint fixed to the bottom surface portions of the pair of side frames is a shared flexible joint having a function of connecting one and the other of the pair of side frames to each other. In the passenger conveyor in any one of Claim 1 to 4,
The passenger conveyor, wherein the fixing means is a connecting bolt or a rivet. In the passenger conveyor in any one of Claim 1 to 5,
A passenger conveyor characterized in that a rigidity per unit width of the joint of the side surface portion is set larger than a rigidity per unit width of the joint of the bottom surface portion. A side frame having a side surface, a top surface bent from the upper end of the side surface, and a bottom surface bent from the lower end of the side surface is divided into at least two, and the divided side frames are joined together. In a passenger conveyor provided with a pair of side frames fixed in step, a tread plate disposed between the pair of side frames, and a drive mechanism for driving the tread plate,
The rigidity per unit width of the joint of the side surface portion of each of the divided side frames is set to be larger than the rigidity per unit width of the joint of the bottom surface portion of each of the divided side frames. together we are,
The joint of the side surface portion of each of the divided side frame bodies is a joint that overlaps the flat plate-shaped joint and the side surface portion and is fixed by fixing means,
The joint of the bottom surface portion of each of the divided side frames is formed by fixing means by overlapping the flat surface portion and the bottom surface portion of the flexible joint having a flexible portion and flat portions located on both sides of the flexible portion. Passenger conveyor characterized by being a joint to be fixed . In the passenger conveyor according to claim 7 ,
The top surface portion of each of the divided side frame bodies is fixed by a fixing means by overlapping flat joints, or a flexible joint having a flexible portion and flat portions located on both sides of the flexible portion. A passenger conveyor, wherein the flat portions are overlapped and fixed by fixing means . In the passenger conveyor according to claim 7 or 8 ,
The shape of the bending part of the said flexible joint is a passenger conveyor characterized in that the cross section is a square shape, the cross section is a triangular shape, and the cross section is an arc shape . In the passenger conveyor in any one of Claim 7 to 9 ,
The passenger conveyor, wherein the flexible joint fixed to the bottom surface portions of the pair of side frames is a shared flexible joint having a function of connecting one and the other of the pair of side frames to each other .

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