JP2008156018A - Footstep levitation preventing device for escalator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a footstep levitation prevention device for an escalator capable of preventing a follow-up roller from colliding against a horizontal connection member in an intermediate part when footsteps swing in the vertical direction on a return passage side to maintain running of the footsteps. <P>SOLUTION: A pressing rail 20 is arranged between a return passage side follow-up rail 19 and the horizontal connection member 1e in the intermediate part. The pressing rail 20 has a regulation face 20a opposing to a running face 19a of the return passage side follow-up rail 19. The pressing rail 20 is abutted on the regulation face 20a when the follow-up roller 26 rolling on the running face 19a of the return passage side follow-up rail 19 leaves the running face 19a to regulate displacement of the follow-up roller 26 in the direction in which it leaves the running face 19a. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an escalator step-up preventing device for stabilizing a step traveling within a main frame.

  In a general escalator, a holding rail is provided along the upper curved portion of the follower rail on the forward path side of the travel route of the steps in the main frame. The presser rail restricts the displacement of the follower roller in a direction away from the running surface of the follower rail (see, for example, Patent Document 1).

  FIG. 9 is an enlarged side view showing an inclined portion of a conventional escalator. 10 is a cross-sectional view taken along line XX of FIG. In the figure, a main frame 101 is installed across the upper and lower floors in the escalator installation space of the building. The upper side of the main frame 101 is constituted by a pair of upper side members 101a arranged at intervals in the longitudinal direction. The lower side of the main frame 101 is constituted by a pair of lower side members 101b that are spaced apart from each other in the longitudinal direction. The pair of lower side members 101b are connected to each other at a plurality of locations by a lower horizontal connecting member 101c. The upper side member 101a and the lower side member 101b are connected to each other at a plurality of locations by a plurality of upper and lower connecting members 101d. The upper side member 101a, the lower side member 101b, and the upper and lower connecting members 101d intersect each other at a right angle. Intermediate portions of the pair of upper and lower connecting members 101d facing each other in the width direction of the main frame 101 are connected to each other by an intermediate horizontal connecting member 101e.

  In the main frame 101, a pair of forward drive rails 102, a pair of forward tracking rails 103, a pair of return driving rails 104, and a pair of return tracking rails 105 are arranged along the inclined portion of the main frame 101. Is provided. Each of the rails 102 to 105 is supported by an upper and lower connecting member 101d. Moreover, each rail 102-105 has the running surfaces 102a-105a which protrude toward the center of the width direction of the main frame 101. As shown in FIG. The travel of the step 106 on the forward path side of the main frame 101 is guided by the forward path drive rail 102 and the forward path tracking rail 103. The travel of the step 106 on the return path side of the main frame 101 is guided by the return path drive rail 104 and the return path tracking rail 105.

  A step 106 traveling in the main frame 101 is attached to a step bracket 107 serving as a skeleton thereof, a step plate 108 attached to the upper surface portion of the step bracket 107, and a lower floor surface portion of the step bracket 107 on the forward path side. A riser 109, a step shaft 111 fixed to the step bracket 107 and connected to the step chain 110, a pair of drive rollers 112 rotatably attached to both ends of the step shaft 111, and a pair of follower rollers 113, have. The driving roller 112 receives driving force from a driving machine (not shown) via the step chain 110 and rolls on the running surfaces 102 a and 104 a of the driving rails 102 and 104. The follower roller 113 follows the rolling of the drive roller 112 and rolls on the running surfaces 103 a and 105 a of the follower rails 103 and 105.

Japanese Examined Patent Publication No. 52-16632

  Here, in the conventional escalator as shown in FIGS. 9 and 10, the dimension between the pair of receiving beams that respectively support both ends of the main frame 101 (the dimension between the floors of the building and the length dimension of the escalator installation space) is When changed, each of the rails 102 to 105 may be deformed, and the driving roller 112 and the following roller 113 pass on the travel surfaces 104a and 105a of the deformed return-side driving rail 104 and the return-side following rail 105, respectively. As a result, the step 106 may swing up and down. Also, when an earthquake occurs, the step 106 may swing up and down due to the vibration.

  Further, the position of the center of gravity of the step 106 traveling on the return path side is a position slightly above the step shaft 111 (point G shown in FIG. 9). Furthermore, when the driving direction of the escalator is a direction from the lower floor side to the upper floor side (UP operation), the position of the center of gravity of the step 106 is located on the side opposite to the traveling direction of the step 106 from the position of the step shaft 111. Therefore, even if the step 106 swings up and down, the fluctuation range of the step 106 tends to decrease, and the swing of the step 106 naturally contracts. Note that the weight and tension of the step chain 108 are applied to the driving roller 112 regardless of the escalator operating direction. Therefore, when the step 106 traveling on the return path swings in the vertical direction, the driving roller 112 moves up and down. The variation range in the direction is very small.

  On the other hand, when the driving direction of the escalator is a direction from the upper floor side to the lower floor side (DOWN operation), the center of gravity of the step 106 is located in the traveling direction of the step 106 from the position of the step shaft 111. When 106 swings in the vertical direction, the range of fluctuation in the vertical direction due to the swinging tends to increase, and the step 106 rotates about the step shaft 111. As the step 106 rotates in this way, the follower roller 113 is separated from the traveling surface 105a of the return side follower rail 105, and the step 106 is lifted upward. Then, when the vehicle travels with the step 106 on the return path lifted, the follower roller 113 collides (interferences) with the intermediate horizontal connecting member 101e as shown in FIGS. 11 and 12, and the travel of the step 106 is obstructed.

  The present invention has been made to solve the above-described problems, and can prevent a collision between the follower roller and the intermediate horizontal connecting member when the step swings up and down on the return path side. An object of the present invention is to obtain an escalator step-up prevention device capable of maintaining the travel of a step.

  The escalator step-up prevention device according to the present invention includes a pair of side portions disposed at intervals in the width direction and a plurality of intermediate portions that connect the pair of side portions to each other so as to separate the forward path and the return path of the step from each other. Applied to a main frame having a horizontal connecting portion, provided between a return side tracking rail disposed below the intermediate horizontal connecting portion in the main frame and the intermediate horizontal connecting portion, and on the return side A lifting restricting body that restricts displacement of the follower roller in a direction away from the running surface of the follower rail is provided.

  In the escalator step-up prevention device according to the present invention, the displacement of the follower roller in the direction away from the traveling surface of the return-side follower rail is restricted by the lift-up regulating body, so that the step swings up and down on the return side. In such a case, the collision between the follower roller and the intermediate horizontal connecting member can be prevented, and the running of the step can be maintained.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a side view showing an escalator according to Embodiment 1 of the present invention.
In the figure, the main frame 1 is installed over the upper and lower floors in the building escalator installation space. A pair of balustrades 2 are erected on the upper surface of the main frame 1. A plurality of steps 3 is provided between the pair of balustrades 2 so as to be able to travel. A handrail rail 4 is provided on the surface of each balustrade 2. The handrail rail 4 is provided with an endless moving handrail 5 so that it can travel. The travel of the moving handrail 5 is guided by the handrail rail 4.

  The upper end of the main frame 1 is connected to the driving machine 6 through a driving chain 7 and a driving machine (motor) 6 that generates driving force for running the steps 3 and the moving handrail 5. An upper floor side drive sprocket 8 and a control panel 9 for controlling the drive of the drive unit 6 are provided. The surface of the upper floor side end portion of the main frame 1 is covered with an upper floor board 10. A handrail driving device 12 is provided on the upper floor side of the inclined portion of the main frame 1. The handrail drive device 12 is connected to the upper floor drive sprocket 8 via the handrail drive chain 11. In addition, the handrail driving device 12 receives the driving force from the driving machine 6 and causes the moving handrail 5 to travel.

  A lower floor side drive sprocket 13 is provided at the lower floor side end of the main frame 1. The surface of the lower floor side end portion of the main frame 1 is covered with a lower floor board 14. A step chain 15 that connects each step 3 is wound around the lower floor side drive sprocket 13 and the upper floor side drive sprocket 8. The step chain 15 receives a driving force from the driving machine 6 through the driving chain 7 and the upper floor side driving sprocket 8. Each step 3 is driven by the driving force received by the step chain 15.

  FIG. 2 is an enlarged side view showing the inclined portion of the main frame 1 of FIG. 3 is a cross-sectional view taken along line III-III in FIG. FIG. 2 is a view of one side as viewed from the center in the width direction of the main frame 1. The upper side of the main frame 1 in the longitudinal direction is composed of a pair of upper side members 1a that are spaced apart from each other in the width direction. The lower side in the longitudinal direction of the main frame 1 is constituted by a pair of lower side members 1b that are spaced apart from each other in the width direction. The pair of lower side members 1b are connected to each other at a plurality of locations by a lower horizontal connecting member 1c. The upper side member 1a and the lower side member 1b are connected to each other at a plurality of locations by a plurality of upper and lower connecting members 1d. The upper side member 1a, the lower side member 1b, and the upper and lower connecting members 1d intersect each other at a right angle. That is, the upper side member 1a, the lower side member 1b, and the upper and lower connecting members 1d constitute a side surface portion in the longitudinal direction of the main frame 1. Intermediate portions of the pair of upper and lower connecting members 1d facing each other in the width direction of the main frame 1 are connected to each other by an intermediate horizontal connecting member 1e as an intermediate horizontal connecting portion of the main frame 1. The intermediate horizontal connecting member 1e is disposed in the main frame 1 so as to separate the forward path and the return path of the travel path of the step 3 from each other.

  Further, in the main frame 1, a pair of forward drive rails 16, a pair of forward drive tracking rails 17, a pair of return drive rails 18, a pair of return drive tracking rails 19, and a pair of pressers as lift regulation bodies A rail 20 is provided over the entire length of the main frame 1 (including the horizontal and inclined portions of the upper and lower floors) so as to connect the lower floor side drive sprocket 13 and the upper floor side drive sprocket 8. Each rail 16-20 is supported by the upper and lower connecting member 1d. The cross-sectional shape of each rail 16-20 is L-shaped. The outward drive rail 16, the outward follower rail 17, the return drive rail 18, and the return follower rail 19 have running surfaces 16 a to 19 a that protrude toward the center in the width direction of the main frame 1. The holding rail 20 is disposed between the return side tracking rail 19 and the intermediate horizontal connecting member 1e. Further, the holding rail 20 has a regulation surface 20 a that faces the traveling surface 19 a of the return path side tracking rail 19.

  The step 3 includes a step bracket 21 serving as a skeleton thereof, a step plate 22 attached to the upper surface portion of the step bracket 21 on the outward path side, a riser 23 attached to a surface portion on the lower floor side of the step bracket 21 on the outward route side, A step shaft 24 fixed to the upper floor end of the step bracket 21 on the forward path side and connected to the step chain 15, a pair of drive rollers 25 rotatably attached to both ends of the step shaft 24, and the forward path side And a pair of follower rollers 26 rotatably attached to the end of the step bracket 21 on the lower floor side. The driving roller 25 rolls on the running surfaces 16 a and 18 a of the driving rails 16 and 18 by the driving force from the driving machine 6. The follower roller 26 follows the rolling of the drive roller 25 and rolls on the running surfaces 17 a and 19 a of the follower rails 17 and 19. That is, the travel of the step 3 on the forward side of the main frame 1 is guided by the forward drive rail 16 and the forward tracking rail 17, and the travel of the step 3 on the return side of the main frame 1 is guided by the return drive rail 18 and the return route. Guided by the side-tracking rail 19.

  Here, the holding rail 20 will be described more specifically. FIG. 4 is an enlarged side view showing a part of the main frame 1 and the step 3 in FIG. 2 when the step 3 swings in the vertical direction. When the follower roller 26 that rolls on the travel surface 19a of the return path side follower rail 19 is separated from the travel surface 19a, the presser rail 20 comes into contact with the regulating surface 20a. The displacement of the follow-up roller 26 in the opening direction is restricted.

  The up-and-down changeable range t of the follower roller 26 is a range obtained by subtracting the diameter dimension φ of the follower roller 26 from the gap dimension D between the traveling surface 19a of the return side follower rail 19 and the restricting surface 20a of the holding rail 20. It has become. Further, the variable range t is between the end surface on the return side tracking rail 19 side of the riser 23 when the tracking roller 26 is in contact with the regulation surface 20a and the back surface of the traveling surface 19a of the return side tracking rail 19. It is set to be smaller than the gap dimension E. That is, the clearance dimension between the running surface 19a of the return side tracking rail 19 and the regulation surface 20a of the holding rail 20 is such that the tracking roller 26 comes into contact with the regulating surface 20a of the holding rail 20 on the return side of the riser 23. The dimension is such that a gap is formed between the end surface on the tracking rail 19 side and the back surface of the traveling surface 19 a of the return path tracking rail 19.

  In the escalator step-up prevention device as described above, the displacement of the follower roller 26 in the direction away from the traveling surface 19a of the return-side follower rail 19 is regulated by the pressing rail 20, so that the step 3 is moved up and down on the return route side. In the case of swinging in the direction, the collision between the follower roller 26 and the intermediate horizontal connecting member 1e can be avoided, and the running of the step 3 can be maintained.

  Here, in the conventional escalator as shown in FIG. 9, dust such as dust accumulates on the running surface 105 a of the follower rail 105, and when the follower roller 113 passes through the accumulated portion, the follower roller 113. Garbage adheres to the outer peripheral surface of the roller, and smooth rotation of the follow-up roller 113 is hindered by the adhered garbage. Even when the tracking roller 113 travels on the forward path side, the step 106 swings in the vertical direction, so that a passenger riding on the tread 108 may feel the swing, Comfort may worsen. On the other hand, in the escalator step-up prevention device as described above, the control surface 20a of the presser rail 20 is disposed so as to face the traveling surface 19a of the return-side tracking rail 19, and the control surface 20a of the presser rail 20 follows. Since the traveling surface 19a of the rail 19 is covered, it is possible to prevent dust from being deposited on the traveling surface 19a of the follower rail 19, and to suppress the deterioration of the riding comfort on the tread plate 22.

  Further, the clearance dimension between the running surface 19 a of the return side tracking rail 19 and the regulation surface 20 a of the holding rail 20 is such that the tracking roller 26 comes into contact with the regulating surface 20 a of the holding rail 19, and the return side of the riser 22. Since the gap is formed between the end surface on the tracking rail 19 side and the back surface of the traveling surface 19a of the return side tracking rail 19, the step 3 on the return side swings up and down. A collision between the riser 22 and the return-side tracking rail 19 can be prevented.

  In the first embodiment, the presser rail 20 and the return-side follower rail 19 are configured by separate members, and the cross-sectional shape of the presser rail 20 is L-shaped. May be integrally configured by the same rail member, or a rail member having a U-shaped cross-section may be used.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described. FIG. 5 is an enlarged side view showing a part of the escalator according to the second embodiment. 6 is a cross-sectional view taken along the line VI-VI in FIG. In the first embodiment, the holding rail 20 is used as the lifting restricting body, but in the second embodiment, the lifting regulating piece (step roller lifting preventing body) 31 is used as the lifting restricting body. The middle horizontal connecting member 1e is provided with a pair of mounting holes (not shown). In addition, a pair of brackets 34 is attached to the intermediate horizontal connecting member 1e by screwing bolts 32 and nuts 33 penetrating the attachment holes into each other.

  The lifting restriction piece 31 is fixed to the bracket 34. The lifting restriction piece 31 includes a restriction piece facing surface portion 31a adjacent to the lower end portion of the intermediate horizontal connecting member 1e and facing the running surface 19a of the tracking rail 19, and a restriction piece facing surface portion from both ends of the restriction piece facing surface portion 31a. It has a pair of inclined surface part 31b which each inclines upwards with respect to 31a. As shown in FIG. 7, the follower roller 26 is guided downward by coming into contact with the surface of the inclined surface portion 31b when separated from the travel surface 19a of the return side follower rail 19, and descends on the travel surface 19a. Arrive. That is, the lifting restricting piece 31 is configured such that when the follower roller 26 rolling on the travel surface 19a of the return path side follower rail 19 is separated from the travel surface 19a, the follower roller 26 is moved in a direction away from the travel surface 19a. Regulate displacement. Other configurations are the same as those in the first embodiment.

  In the escalator step-up prevention device as described above, the lifting restriction piece 31 attached to the intermediate horizontal connecting member 1e is used. Therefore, even in an existing escalator, a mounting hole is provided in the intermediate horizontal connecting member 1e. By providing, the lifting restriction piece 31 can be easily attached to the intermediate horizontal connecting member 1e. At the same time, when the step 3 swings in the vertical direction, the collision between the follower roller 26 and the intermediate horizontal connecting member 1e can be prevented, and the travel of the step 3 can be maintained.

  Further, the follower roller 26 is guided downward by contacting the inclined surface portion 31b and reaches the traveling surface 19a of the return-side follower rail 19, so that when the lift on the return-side step 3 occurs, The step 3 can be smoothly returned from the lifted state to the normal running state.

Embodiment 3 FIG.
In the second embodiment, the lifting restriction piece 31 has the pair of inclined surface portions 31b. However, as shown in FIG. 8, the lifting restriction piece 31 may have the pair of curved surface portions 31c. The curved surface portion 31c is curved from the both ends of the restricting piece facing surface portion 31a upward to the restricting piece facing surface portion 31a, and is curved from the intermediate horizontal connecting member 1e toward the traveling direction of the step 3 (curved curve). shape). Even if such a lifting restriction piece 31 is used, the same effect as in the second embodiment can be obtained.

  In the first to third embodiments, the present invention is applied to the main frame 1 of the escalator. However, the present invention is also applied to the main frame of the inclined passenger conveyor in which the follower roller and the driving roller are used for the step. May be.

It is a side view which shows the escalator by Embodiment 1 of this invention. It is a side view which expands and shows the inclination part of the main frame of FIG. 3 is a cross-sectional view taken along line III-III in FIG. It is a side view which shows the rocking | fluctuation state of the step of FIG. It is a side view which shows the step lift prevention apparatus of the escalator by Embodiment 2 of this invention. FIG. 6 is a front view showing the lifting restriction piece of FIG. 5. FIG. 7 is a side view showing the lifting restricting piece and the step in the swinging state of FIG. 6. It is a side view which shows the step lift prevention apparatus of the escalator by Embodiment 3 of this invention. It is a side view which expands and shows the inclination part of the main frame of the conventional escalator. It is sectional drawing which follows the XX line of FIG. It is a side view which shows the rocking | fluctuation state of the step of FIG. It is sectional drawing which follows the XII-XII line | wire of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Main frame, 1e Intermediate | middle part horizontal connection member (intermediate horizontal connection part), 3 steps, 19 Return path side follower rail, 20 Presser rail (lifting restricting body), 20a Restricting surface, 23 Riser, 26 Following roller, 31 Lifting restricting piece (Lifting regulator), 31a regulating piece facing surface portion, 31b inclined surface portion, 31c curved surface portion.

Claims (5)

Applied to a main frame having a pair of side portions spaced apart from each other in the width direction and a plurality of intermediate horizontal connecting portions that connect the pair of side portions to each other so as to separate the forward path and the return path of the step from each other. Escalator step lift prevention device,
Provided between the return-side tracking rail disposed below the intermediate horizontal coupling portion in the main frame and the intermediate horizontal coupling portion, and in the direction away from the travel surface of the return-side tracking rail. An escalator step-up prevention device comprising a lift-up restricting body that restricts displacement of the follower roller.   The lifting restriction body is a holding rail having a restriction surface facing the guide surface of the return path following rail and disposed on the inclined portion of the main frame so as to follow the return path tracking rail. The escalator step-up prevention device according to claim 1.   The clearance dimension between the travel surface of the return side tracking rail and the regulation surface is such that when the tracking roller contacts the regulation surface, the end surface of the riser side of the riser of the step and the guide surface The escalator step-up prevention device according to claim 2, wherein the escalator has a dimension such that a gap is formed between the escalator and the back surface of the escalator. The lifting restriction body is a lifting restriction piece attached to the intermediate horizontal connecting portion,
The lifting restriction piece is adjacent to the lower end of the intermediate horizontal connecting portion and opposed to the running surface of the tracking rail, and is inclined upward from the opposite ends of the facing surface portion with respect to the facing surface portion. The escalator step-up prevention device according to claim 1, further comprising a pair of inclined surface portions that guide the follow-up rollers in contact with each other downward.   5. The inclined surface portion is curved from the intermediate horizontal connecting portion toward the advancing direction of the step while being inclined upward from both ends of the opposing surface portion with respect to the opposing surface portion. Escalator step-up prevention device.

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