JP2015105185A - Passenger conveyor housing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passenger conveyor that even when receiving either a compression load exceeding a buckling load with respect to a longitudinal direction, can suppress a decrease in transmission of a later compression load not exceeding a buckling load with respect to a longitudinal direction.SOLUTION: A passenger conveyor housing, which comprises a plurality of chord members 1 extending in a longitudinal direction and keeps both longitudinal ends supported by a pair of building beams 8, further comprises a pair of reinforcement members 6 extending in a longitudinal direction, provided at intervals in a longitudinal direction, and each fixed on the chord members 1. The pair of reinforcement beams 6 come in contact with each other so as to receive a compression load when the chord members 1 are deformed on buckling by receiving a compression load with respect to a longitudinal direction.

Description

  The present invention relates to a housing of a passenger conveyor that is installed between building beams and conveys passengers between building beams.

  Conventionally, a pair of shaft members extending in the axial direction and spaced apart in the axial direction, a hollow cylindrical body provided in one shaft member of the pair of shaft members, and provided in the other shaft member , An insertion rod inserted inside the hollow cylinder, and an intervention device for pressing provided between the inner circumferential surface of the hollow cylinder and the outer circumferential surface of the portion of the insertion rod inserted into the hollow cylinder And a screw body that is inserted into the screw hole formed in the hollow cylinder body from the outside of the hollow cylinder body, and the tip portion presses the pressing intervention apparatus material so that the pressing intervention apparatus presses the insertion rod body. The truss structure provided is known. In this truss structure, until the compressive load applied to the pair of shaft members reaches the buckling load, the longitudinal dimension of the pair of shaft members is reduced by the frictional force between the pressing intervention device and the insertion rod. When the compression load that is maintained and applied to the pair of shaft members exceeds the buckling load, slippage occurs between the pressing intervention device and the insertion rod body, and thus the longitudinal direction of the pair of shaft members is increased. The dimensions change. This prevents buckling deformation from occurring in the pair of shaft members, and when a compressive load that does not exceed the buckling load is subsequently applied to the pair of shaft members, compression by the pair of shaft members is performed. The transmission of the load is maintained (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 5-64367

  However, when this truss structure is applied to a passenger conveyor housing, steel members having a side of about 100 mm and a length of about 1000 mm to 1500 mm are generally used for members used in the passenger conveyor housing. The buckling load exceeds 10 tons, and a frictional force exceeding 10 tons is required. Since the frictional force varies depending on the roughness of the sliding surface and the contact surface pressure, it varies under the influence of humidity and temperature. Therefore, when this truss structure is applied to the casing of a passenger conveyor, when the frictional force greatly exceeds the buckling load and a compression load exceeding the buckling load is applied to the pair of shaft members, a pair of If the shaft material is buckled and then a compressive load that does not exceed the buckling load is applied to the pair of shaft materials, the transmission of the compressive load by the pair of shaft materials will decrease. There was a problem.

  This invention reduces the transmission of compressive load when it receives a compressive load exceeding the buckling load in the longitudinal direction and then receives a compressive load that does not exceed the buckling load in the longitudinal direction. The housing of a passenger conveyor that can be suppressed is provided.

  The casing of the passenger conveyor according to the present invention is a casing of a passenger conveyor that includes a main chord material extending in the longitudinal direction and whose longitudinal ends are supported by a pair of building members. And a pair of reinforcing members fixed to the main chord material, each of which is fixed to the main chord material, and the pair of reinforcing members are formed by applying a compressive load in the longitudinal direction to the main chord material. When the strings are buckled and deformed, they contact each other to receive a compressive load.

  According to the housing of the passenger conveyor according to the present invention, when the main chord material is buckled and deformed by applying a compressive load in the longitudinal direction to the main chord material, the pair of reinforcing members receive the compressive load. Even if a compressive load exceeding the buckling load in the longitudinal direction is received, the transmission of the compressive load is reduced when a compressive load that does not exceed the buckling load in the longitudinal direction is subsequently applied. Can be suppressed.

It is a side view which shows the housing | casing of the passenger conveyor which concerns on Embodiment 1 of this invention. It is an enlarged view which shows the A section of FIG. It is a top view which shows the principal part of the housing | casing of the passenger conveyor of FIG. It is arrow sectional drawing along the IV-IV line of FIG. It is a side view which shows the housing | casing of the passenger conveyor erected between building beams. It is a side view which shows the housing | casing of a passenger conveyor when a normal load is applied. It is an enlarged view which shows the principal part of the housing | casing of the passenger conveyor of FIG. It is a side view which shows the housing | casing of a passenger conveyor when a big earthquake generate | occur | produces and a pair of building beams approach each other. It is an enlarged view which shows the principal part of the housing | casing of the passenger conveyor of FIG. It is a graph which shows the relationship between the compressive load when the compressive load is applied to the chord material, and the distortion about an axial direction. It is a figure which shows the state which a pair of reinforcement member in the housing | casing of the passenger conveyor of FIG. 8 mutually contacts.

Embodiment 1 FIG.
1 is a side view showing a casing of a passenger conveyor according to Embodiment 1 of the present invention, FIG. 2 is an enlarged view showing a portion A of FIG. 1, and FIG. 3 is a main portion of the casing of the passenger conveyor of FIG. FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. In the figure, a casing 100 of a passenger conveyor is provided so as to be adjacent to each other, and includes four string members (main chord members) 1 each extending in the longitudinal direction. The four string members 1 are arranged at the four corners of the passenger conveyor casing 100 when the passenger conveyor casing 100 is cut along a plane perpendicular to the longitudinal direction.

  The casing 100 of the passenger conveyor extends in a direction perpendicular to the longitudinal direction, and is connected to the longitudinal structural member 2 that connects the adjacent string materials 1 in the height direction, and the longitudinal direction of the string material 1. Inclined structural members 3 that are arranged extending in a sloping direction and connect adjacent chord members 1 in the height direction, and horizontal structural members 4 that connect intermediate portions of the vertical structural members 2 adjacent in the width direction, And a horizontal structural member 5 for connecting the respective lower ends of the vertical structural members 2 adjacent to each other in the width direction. In this example, the width direction is the width direction of the casing 100 of the passenger conveyor and is the direction of arrow B in FIG.

  The passenger conveyor casing 100 is provided at intervals in the longitudinal direction, and each of the pair of reinforcing members 6 fixed to the same string member 1 and one of the pair of reinforcing members 6. It further includes a support member 7 provided on the reinforcing member 6 and slidably supporting an end portion on the one reinforcing member 6 side of the other reinforcing member 6. The pair of reinforcing members 6 are arranged so as to sandwich a portion of the chord 1 that is expected to undergo buckling deformation due to a compressive load in the longitudinal direction. In this example, the reinforcing member 6 is fixed to each of the pair of vertical structural members 2 adjacent in the longitudinal direction. That is, the pair of reinforcing members 6 are fixed to the string member 1 via the vertical structural member 2.

  The pair of reinforcing members 6 are arranged extending in the longitudinal direction. That is, the axes of the pair of reinforcing members 6 are arranged on the same straight line.

  FIG. 5 is a side view showing the casing 100 of the passenger conveyor installed between the building beams 8. The casing 100 of the passenger conveyor is constructed so as to bridge between a pair of building beams 8 having a height difference of H and a support point interval of G. The passenger conveyor casing 100 includes a step (not shown) for transporting passengers, a moving handrail (not shown) for the passenger to hold, and a drive unit (not shown) for moving the step and the moving handrail. 1) and design members (not shown) such as balustrade panels. Accordingly, during normal operation, a load including the weight of these members, the weight of the passenger, and the weight of the casing is applied to the casing 100 of the passenger conveyor downward in the vertical direction. FIG. 6 is a side view showing the casing 101 of the passenger conveyor when a normal load is applied. FIG. 6 also shows a passenger conveyor housing 100 when no vertical downward load is applied, for comparison. As shown in the figure, the entire casing 101 of the passenger conveyor bends by the downward load in the vertical direction so that the middle portion in the longitudinal direction moves downward. At this time, a tensile load force or a compressive load force is applied to each member constituting the casing 101 of the passenger conveyor in accordance with its position.

  FIG. 7 is an enlarged view showing a main part of the casing 101 of the passenger conveyor of FIG. In the figure, the distance t between the pair of reinforcing members 6 varies due to the displacement of the chord 1 due to the compressive load in the longitudinal direction. However, in a state in which a normal compressive load is applied to the chord material 1, the compressive load applied to the chord material 1 is sufficiently small with respect to the buckling load. Absent. In this case, the chord material 1 is elastically deformed like a bow, and returns to its original shape when the downward load applied to the casing 101 of the passenger conveyor is reduced, for example, when the passenger gets off. In this case, the fluctuation amount of the interval t between the pair of reinforcing members 6 is usually less than 1 mm.

  FIG. 8 is a side view showing the casing of the passenger conveyor when a large earthquake occurs and the pair of building beams 8 approach each other. FIG. 9 is an enlarged view showing the main part of the casing of the passenger conveyor in FIG. 10 is a graph showing the relationship between the compressive load and the strain in the axial direction when a compressive load is applied to the chord 1. FIG. 8 also shows a passenger conveyor housing 100 when a downward load in the vertical direction is not applied for comparison. When a large earthquake occurs and the pair of building beams 8 supporting the passenger conveyor casing 102 are displaced in a direction in which they are largely approached, the passenger conveyor casing 102 is deformed so as to be largely compressed as a whole. To do. In this case, a compressive load exceeding the buckling load f1 is applied to the string member 1, and plastic deformation due to buckling occurs until the string material 1 is in the shape of a dogleg. Respective ends of the pair of reinforcing members 6 that are opposed to each other greatly approach due to a large deformation of the chord material 1. Based on the size of the chord material 1 in the casing 102 of a general passenger conveyor and the compression amount at the time of an earthquake currently assumed, the compression amount in the chord material 1 that receives the largest compressive load is about 20 mm. . The distance t between the pair of reinforcing members 6 in the present invention approaches about 20 mm. In this case, for example, if the chord material 1 is compressed by Δt, a repulsive force is generated on the chord material 1 with respect to the compression load f3, and if the forced compressive load due to the occurrence of a large earthquake is removed, the chord material 1 is The distance t between the pair of reinforcing members 6 is increased by that amount.

  When the chord material 1 is subjected to a compulsory compressive load due to a large earthquake, not all the chord materials 1 constituting the casing 102 are plastically deformed to be in a buckled state, but receive a particularly large compressive load. Except for the chord material 1, most of the chord material 1 is deformed within a range of elastic deformation. That is, when the compulsory compressive load is removed from the compulsory compression state caused by a large earthquake, and the pair of building beams 8 return to their original positions, most of the chord material 1 is subjected to a normal load. Returning to the shape at the time, that is, only a normal downward load as shown in FIG. 6 is applied.

  However, the chord material 1 in which plastic deformation due to buckling has occurred due to a forced compressive load in the longitudinal direction is compressed in the longitudinal direction by Δt as shown in FIG. In general, the compressive load f2 and the compressive load f3 in FIG. 10 are about 10% of the buckling load f1, and the compressive load f0 in the case where only the normal vertical downward load shown in FIG. 6 is applied. Is a value larger than the compressive load f2 and the compressive load f3. In this case, since the compression load f0 larger than the compression load f3 that the string material 1 can withstand is applied to the string material 1, the string material 1 cannot withstand this compression load, and the string material 1 shown in FIG. From the state, the deformation of the character progresses further to the chord material 1, and the transmission of the compressive load in the longitudinal direction is the same as the case where the chord material 1 does not exist.

  Here, in the case 102 of the passenger conveyor of the present invention, the deformation of the U-shape by the compressive load in the longitudinal direction proceeds in the chord material 1, and the compression amount in the longitudinal direction of the chord material 1 is the compression amount at the time of earthquake. When the compression amount exceeds about 20 mm, as shown in FIG. 11, the ends of the pair of reinforcing members 6 that are opposed to each other approach each other, and the distance t becomes zero and they are in contact with each other. In this case, instead of the chord material 1 in which buckling deformation has occurred and the compressive load in the longitudinal direction cannot be transmitted, a compressive load f0 in the longitudinal direction in which the pair of reinforcing members 6 are applied to the chord material 1 is applied. Will receive. The pair of reinforcing members 6 are shorter in length than the chord 1 and the compression load f0 applied by a normal load is generally about 30% compared to the buckling load f1, so the pair of reinforcing members 6 Even if the member 6 has a smaller cross-sectional area than that of the chord material 1, it does not buckle and can transmit the compressive load f0.

  Therefore, in the state where a large earthquake occurs and a compressive load is forcibly applied to the entire casing 102 of the passenger conveyor and then the forced compressive load disappears, the axial direction of the buckled and deformed chord 1 It is possible to transmit a compressive load on the passenger conveyor, and the casing 102 of the passenger conveyor does not collapse in the erected state between the building beams 8 and can stand on its own.

  As described above, according to the passenger conveyor casing 100 according to the embodiment of the present invention, when the string material 1 is buckled and deformed by applying a compressive load in the longitudinal direction to the string material 1, Since the pair of reinforcing members 6 come into contact with each other so as to receive a compressive load, even when a compressive load exceeding the buckling load in the longitudinal direction is received, the compression is performed so as not to exceed the buckling load in the longitudinal direction thereafter. A decrease in the transmission of the compressive load when receiving a load can be suppressed.

  In addition, since the reinforcing member 6 is provided on one reinforcing member 6 of the pair of reinforcing members 6 and includes a supporting member 7 that slidably supports an end of the other reinforcing member 6 on the one reinforcing member 6 side, When the string 1 is buckled and deformed, the pair of reinforcing members 6 can be brought into contact with each other more reliably.

  In the first embodiment, the case 100 of the passenger conveyor provided with the support member 7 has been described. However, if the pair of reinforcing members 6 can contact each other when the string material 1 is buckled, the support is provided. The housing of the passenger conveyor which is not provided with the member 7 may be sufficient.

  DESCRIPTION OF SYMBOLS 1 String material (main chord material), 2 vertical structure member, 3 inclination structure member, 4 horizontal structure member, 5 horizontal structure member, 6 reinforcement member, 7 support member, 8 building beam (building member), 100, 101, 102 Enclosure.

Claims (2)

A casing of a passenger conveyor comprising a main chord extending in the longitudinal direction and having both longitudinal ends supported by a pair of building members;
A pair of reinforcing members extending in the longitudinal direction and spaced apart in the longitudinal direction, each fixed to the main chord material;
The pair of reinforcing members contact each other so as to receive the compressive load when the main chord material is buckled and deformed by applying a compressive load in the longitudinal direction to the main chord material. Passenger conveyor housing.   It further includes a support member that is provided on one of the pair of reinforcing members and that slidably supports an end of the other reinforcing member on the one reinforcing member side. The housing of the passenger conveyor according to claim 1.

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