JP4290790B2 - Moving walkway - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a moving sidewalk installed in a public facility such as an airport or a station, and more particularly to a moving sidewalk that transports a user in each of two opposing directions.
[0002]
[Prior art]
Currently, a moving sidewalk that has already been put to practical use pivots sprockets on the left and right sides of one side and the other side of the sidewalk, and wraps an endless chain around each end sprocket on the left side of the sidewalk and each end sprocket on the right side. In some cases, the left and right ends of a large number of pallets on which a user can ride are locked to an endless chain, and the sprockets rotate to rotate the large number of pallets.
[0003]
In this moving sidewalk, the pallet moving on the upper side (carrier side) of the circuit route transports the user from one side of the sidewalk to the other side of the sidewalk, but the pallet moving on the lower side (return side) of the circuit route is used by the user. It does not contribute to the transportation of the user, and the user cannot be transported simultaneously in two opposite directions.
[0004]
Another example of a moving walkway is disclosed in Japanese Patent Publication No. 56-257.
[0005]
As shown in FIGS. 19 to 23, the moving sidewalk described in the above publication has a guide rail 102 having a storage groove 101 extending in the sidewalk extension direction, and a running groove 103 extending in the sidewalk extension direction on the upper surface and a guide. A guide plate 104 attached to the upper part of the rail 102 so as to be positioned on the left and right of the storage groove 101, a pallet 105 on which a user can ride, and a ball receiver 106 so as to roll along the traveling groove 103. A steel ball 107 pivotally supported on the left and right portions of the lower surface of the pallet 105 and a screw shaft 108 extending in the sidewalk extension direction and disposed in the storage groove 101 of the guide rail 102 are provided.
[0006]
The screw shaft 108 is configured by bundling steel wires or the like so as to have flexibility.
[0007]
The thread 109 of the screw shaft 108 has a portion S with a small pitch and a portion L with a large pitch. Is provided between the places of getting on and off.
[0008]
A drive shaft of the motor 110 is connected to one end of the screw shaft 108, and the other end of the screw shaft 108 is pivotally supported by a bearing 111.
[0009]
A long groove 112 extending in the movement direction of the pallet 105 is formed in each of the front end portion and the rear end portion of the lower surface of the pallet 105.
[0010]
The upper part of the support frame 114 is attached to the long groove 112 through a shaft 113 extending in the moving direction of the pallet 105 so that the upper part can move back and forth.
[0011]
Further, steel balls 115 are pivotally supported at the lower front end and the lower rear end of each support frame 114 so as to abut on the thread 109 of the screw shaft 108, respectively.
[0012]
In this moving sidewalk, when the motor 110 is operated, the support frame 114 is pushed out in the feed direction of the screw thread 109 as the screw shaft 108 rotates, and the pallet 105 moves.
[0013]
The moving speed of the pallet 105 becomes low at the portion S where the pitch of the thread 109 near the boarding / exiting place is small, and becomes high at the portion L where the pitch of the thread 109 between the boarding / exiting locations is large.
[0014]
When the pallet 105 moves from the portion S where the pitch of the thread 109 is small to the portion L where the pitch is large, the pallet 105 moves from the portion L where the pitch of the thread 109 is large to the portion S where the pitch is small. At this time, the support frame 114 moves back and forth along the shaft 113, and the interval between the two support frames 114 attached to the pallet 105 is adjusted according to the pitch change of the thread 109.
[0015]
Further, since the screw shaft 108 is flexible, the movement path of the pallet 105 can be curved.
[0016]
Therefore, as shown in FIG. 23, if the screw shaft 108 is arranged in a substantially annular shape, a large number of pallets 105 can be rotated.
[0017]
[Problems to be solved by the invention]
However, the screw shaft 108 having flexibility is difficult to manufacture and is not practical, and it is not easy to arrange the screw shaft 108 in a substantially arc shape and rotate the pallet 105 around.
[0018]
Furthermore, in the moving sidewalk described in Japanese Examined Patent Publication No. 56-257, the pallets 105 adjacent to each other in the moving direction are not in contact with each other, and no consideration is given for the user to get on and off the pallet 105 safely. .
[0019]
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a moving sidewalk that can safely transport a user in two opposing directions.
[0020]
[Means for Solving the Problems]
In order to achieve the above object, in the moving sidewalk of the present invention, there are two arcuate swiveling parts and an annular rail having a conveying part that connects both swivel parts and arranged substantially horizontally, guided by the rails. A large number of pallets that can move in one direction, screw rods that are arranged in the pallet movement direction downstream portion of the transport unit and that can rotate in the circumferential direction, and that are provided in each pallet and are associated with screw grooves in the screw rods. The pitch of the thread groove of the screw rod is gradually narrowed from the upstream end in the pallet moving direction toward the downstream side, and slightly widened at the downstream end in the pallet moving direction. A protrusion member is provided on the lower surface of each pallet so that the front edge of the pallet adjacent to the rear side in the movement direction of the pallet can be in contact with the front edge of the movement direction of each pallet. Insert the lower side of the pallet adjacent the forward side, the adjacent pallet string-shaped member And elastic buffer mechanism for buffering excessive tension applied to the string-like member Are linked by.
[0021]
In the moving sidewalk of the present invention, the string-like member And elastic buffer mechanism for buffering excessive tension applied to the string-like member The adjacent pallets are connected to each other, the pallet moving with the screw rod of the transport unit pulls the subsequent pallet and pushes out the front pallet with the protruding member, and the moving direction of the pallet in one transport unit and the other The direction of pallet movement in the transport section is reversed.
[0022]
In addition, the front edge in the moving direction of each pallet is inserted below the pallet adjacent to the pallet to form a continuous sidewalk surface.
[0023]
In addition, the screw rod pitch gradually decreases from the upstream end in the pallet movement direction toward the downstream side, and the screw groove pitch slightly increases at the downstream end in the pallet movement direction. After gradually reducing the speed of the pallet traveling in the side portion, the speed is slightly increased.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described based on illustrated examples.
[0025]
1 to 16 show an example of an embodiment of a moving sidewalk according to the present invention. This moving sidewalk includes two rails 11 arranged in an annular shape, and along which the user 11 can ride and along the rails 11. A number of pallets 3 that can be rotated clockwise, a chain 22 and an elastic buffer mechanism 25 that connect adjacent pallets 3, and screw rods 16, 24, and 33 that can move the pallets 3 in the direction in which the rails 11 extend. A movable step 63 provided at a position where the user gets on and off the pallet 3 and a copying mechanism 68 capable of swinging the movable step 63 up and down following the upper surface of the pallet 3 are provided.
[0026]
First, the structure of the rail 11 and the guide rail 12 incidental to it will be described based on FIG. 1, FIG. 3 to FIG. 6, and FIG.
[0027]
The rail 11 includes two linear conveying portions 1A and 1B arranged in parallel and horizontally, a semicircular swivel portion 1C connected to one end of both conveying portions 1A and 1B, and both conveying portions 1A. , 1B and a semicircular turning portion 1D connected to the other end.
[0028]
A predetermined portion of the rail 11 is laid on a stand 23 erected on the base 14.
[0029]
A guide rail 12 bent in a semicircular shape along the rail 11 is arranged on the outer side of the rail 11 on the radially outer side of the swivel units 1C and 1D and on the inner side of the rail 11 on the inner side in the radial direction.
[0030]
Predetermined portions of the guide rails 12 are supported from above by support columns 13 erected on the base 14 so as to be located outside the rails 11 of the respective guide rails 12.
[0031]
Further, the swivel portions 1C and 1D of the rail 11 and the guide rail 12 are entirely covered from above by the platforms 2A and 2B for getting on and off.
[0032]
Next, the structure of the pallet 3 and the members attached thereto will be described with reference to FIGS. 1 and 5 to 11.
[0033]
The pallet 3 has a groove 3f that passes through in the moving direction on the upper surface, and the rear ends of the ridges 3g on both sides of the groove 3f constitute comb teeth 3b that protrude to the rear side of the pallet 3.
[0034]
Between the comb teeth 3b, there are provided projections 3e projecting downward so as to be able to fit into the grooves 3f of the other adjacent pallets 3, and a gentle downward slope toward the rear is formed on the top of the comb teeth 3b. An inclined surface 3d to be presented is formed.
[0035]
A projecting member 3c having a circular planar shape is fixed to the lower surface of the pallet 3, and a semicircular recess in which the projecting member 3c of the pallet 3 adjacent to the front end can be fitted to the front end of the pallet 3. 3a is formed.
[0036]
A beam 5 extending in the width direction of the pallet 3 is fixed to the lower surface of the pallet 3 via a spacer 4.
[0037]
A traveling roller 6 is mounted on the lower surface near the rear end of the beam 5 so as to roll on the upper surface of the rail 11 via a bracket 7.
[0038]
On both sides of the front end portion of the beam 5 are fixed upper end portions of an arm 8 having a substantially L shape when viewed from the front and rear in the pallet movement direction, and an inclination angle is attached to the lower end portion of the arm 8 via a bracket 9. The correction roller 10 is mounted so as to roll on the lower surface of the guide rail 12.
[0039]
On the lower surface of the beam 5, the upper ends of the two arms 15 are fixed so as to be positioned between the left and right traveling rollers 6. The rail 11 is mounted so that the opposite side surfaces can roll.
[0040]
The pallets 3 described above are arranged such that the traveling roller 6 is in contact with the upper surface of the rail 11 and the traverse restriction roller 21 is in contact with the side surface of the rail 11.
[0041]
The front edge of each pallet 3 is inserted under the other pallet 3 adjacent to the front side in the moving direction of the pallet 3.
[0042]
Thereby, in the conveyance parts 1A and 1B of the rail 11, the projection 3e of the pallet 3 is fitted into the groove 3f of the other pallet 3 adjacent to the rear side in the movement direction of the pallet 3, and the pallet 3 on the front side in the movement direction is inserted. The rear end portion is supported by the pallet 3 on the rear side in the movement direction.
[0043]
In the swivel portions 1C and 1D of the rail 11, the adjacent pallets 3 approach and the tilt angle correction roller 10 rolls on the lower surface of the guide rail 12, so that each pallet 3 is in a forward tilt state, and the pallet 3 The fitting between the protrusion 3e and the groove 3f is released.
[0044]
Further, in the swivel portions 1 </ b> C and 1 </ b> D of the rail 11, the recess 3 a at the front edge of the other pallet 3 following the pallet 3 is fitted to the protruding member 3 c of each pallet 3.
[0045]
Next, the structure of the screw rods 16, 24, and 33 will be described with reference to FIGS. 1 to 6 and FIGS.
[0046]
The screw rods 33 are also positioned in parallel between the left and right rails 11 at two locations, a portion near the turning portion 1C of the conveying portion 1A of the rail 11 and a portion near the turning portion 1D of the conveying portion 1B of the rail 11. Has been placed.
[0047]
The end of the screw rod 33 is pivotally supported by a bearing (not shown) provided on the gantry 23 described above, and a rotational force is transmitted from a motor (not shown).
[0048]
The pitch of the thread groove 33a of the screw rod 33 is set so as to gradually expand in the order of the boarding / alighting range S1, the low speed range M1, and the high speed range L1 from the upstream end toward the downstream end in the pallet 3 movement direction. Yes.
[0049]
The screw rods 24 are arranged in parallel between the left and right rails 11 at two locations, an intermediate portion of the transport portion 1A of the rail 11 and an intermediate portion of the transport portion 1B of the rail 11.
[0050]
Similarly to the screw rod 16, the end portion of the screw rod 24 is also pivotally supported on the mount 23 described above via a bearing (not shown) so that a rotational force is transmitted from a motor (not shown). It has become.
[0051]
The pitch of the screw groove 24a of the screw rod 24 is set to be equal to the pitch of the screw groove 16a in the high speed range L1 of the screw rod 16.
[0052]
The screw rods 16 are positioned in parallel between the left and right rails 11 at two locations, a portion near the turning portion 1D of the conveying portion 1A of the rail 11 and a portion near the turning portion 1C of the conveying portion 1B of the rail 11. Has been placed.
[0053]
The end of the screw rod 16 is pivotally supported by the bearing 20 provided on the gantry 23 described above, and a rotational force is transmitted from a motor (not shown).
[0054]
The pitch of the screw groove 16a of the screw rod 16 gradually narrows in the order of the high speed range L1, the low speed range M1, and the boarding / alighting range S1 from the upstream end toward the downstream side in the pallet 3 movement direction, and the pitch becomes constant. It is set so as to expand slightly at the downstream end in the pallet movement direction through the part.
[0055]
Further, a moving roller (thrust transmission member) 18 is pivoted at the lower end of the support base 17 provided at the center of the lower surface of the beam 5 attached to each pallet 3 so as to be positioned directly below the protruding member 3c. It is supported.
[0056]
When the moving roller 18 rotates the screw rods 16, 24, 33 with the thread grooves 16 a, 24 a, 33 a engaged, the moving roller 18 moves in a direction corresponding to the rotation of the screw rods 16, 24, 33. The roller 18 is sent out, whereby the pallet 3 moves along the conveying portions 1A and 1B of the rail 11.
[0057]
Further, the moving speed of the pallet 3 increases in the order of the getting-on / off range S1, the low speed range M1, and the high speed range L1 according to the pitch of the thread grooves 16a, 24a, and 33a.
[0058]
That is, when the moving roller 18 is engaged with the screw groove 16a of the screw rod 16, the speed of the pallet 3 that moves toward the platforms 2B and 2A in the portions near the turning portions 1D and 1C of the transport portions 1A and 1B is as follows. As shown in FIG. 2, the vehicle is gradually decelerated and then slightly increased after moving at a constant speed.
[0059]
Next, the structure of the chain 22 and the elastic buffer mechanism 25 will be described with reference to FIGS. 6, 11, and 15.
[0060]
The elastic shock-absorbing mechanism 25 is a spring member 29 that can be loosely fitted to the bolt 28 and can be compressed in the moving direction of the pallet 3, and is externally fitted to a portion near one end of the bolt 28 so as to be movable in the axial direction. A first spring seat 27a that contacts, a first nut 28a that is screwed into the bolt 28 so as to abut against an end surface of the first spring seat 27a that is closer to the anti-spring member, and an axis that is closer to the other end of the bolt 28 A second spring seat 26a that is externally fitted so as to be movable in the direction and abuts against the other end of the spring member 29, and is screwed into the bolt 28 so as to abut on the end surface of the second spring seat 26a near the anti-spring member. The second nut 28b and a third nut 28c screwed into the bolt 28 so as to abut against the second nut 28b.
[0061]
When the elastic buffer mechanism 25 adjusts the screwed state of the second nut 28b to the bolt 28, the protruding length of the bolt 28 from the second spring seat 26a changes.
[0062]
The first spring seat 27a is integrally provided with an inner cylinder 27 positioned inward of the spring member 29 and surrounding the intermediate portion of the bolt 28 in the circumferential direction, and the second spring seat 26a includes a spring member. An outer cylinder 26 that surrounds 29 in the circumferential direction is integrally provided.
[0063]
A plug 30 having a connecting fork 30a is inserted into the end of the outer cylinder 26 on the side opposite to the spring seat, and the plug 30 is locked to the outer cylinder 26 by a spring pin 30b.
[0064]
One end of the link member 32 is connected to the fork portion 30a by a pin 32a.
[0065]
The other end of the link member 32 is connected to the front end portion of the bracket 31 fixed to the arm 8 described above via a substantially horizontal pin 32b.
[0066]
A connecting fork portion 28 d is formed integrally with the other end portion of the bolt 28.
[0067]
The fork portion 28d is connected to the rear end portion of the chain 22 via a pin 22a, and the front end portion of the chain 22 is connected to the rear end portion of the bracket 31 via a substantially horizontal pin 22b. Has been.
[0068]
As a result, the arm 8 attached to each pallet 3 and the arm 8 attached to another pallet 3 adjacent to the pallet 3 are connected via the bracket 31, the chain 22, the elastic buffer mechanism 25, and the bracket 31. The
[0069]
Next, the configuration of the movable step 63 and the copying mechanism 68 will be described with reference to FIGS. 3, 5, 10, and 16.
[0070]
The movable step 63 is arranged for each of the fixed steps 64 extending from the platform 2A, 2B for getting on and off to the upper side of the pallet 3 located in the vicinity of the end portion of the conveying portion 1A, 1B of the rail 11.
[0071]
A comb tooth 65 that can be fitted into the groove 3f on the upper surface of the pallet 3 is provided at the distal end of the movable step 63, and a rotating shaft 66 that protrudes left and right substantially horizontally is integrated with the base end of the movable step 63. Is provided.
[0072]
The rotary shaft 66 is arranged such that a large gap or step is not formed between the upper surface of the proximal end of the movable step 63 and the upper surface of the distal end of the fixed step 64 on the bearing 67 provided near the distal end of the fixed step 64. It is pivotally supported.
[0073]
The copying mechanism 68 includes a pin 71 on an upper arm 69 whose base end is fixed to the rotary shaft 66 and whose tip is located on the side of the movable step 63, and a bracket 70 whose base end is installed near the tip of the movable step 63. And a lower arm 72 disposed below the upper arm 69 so that the tip is positioned on the swivel portions 1C and 1D side of the rail 11 with respect to the rotary shaft 66, and passes directly below the fixed step 64. A copying roller 73 pivotally supported at the tip of the lower arm 72 so that the upper surface of the pallet 3 can roll, one end pivotally supported by the tip of the upper arm 69 via a pin 74, and the other end at the bottom The connecting member 76 is pivotally supported by a pin 75 at an intermediate portion of the arm 72.
[0074]
The distance from the comb teeth 65 of the movable step 63 to the rotation center of the copying roller 73 is set to be approximately equal to the interval between two adjacent pallets 3 that are about to pass directly below the movable step 63 and the fixed step 64.
[0075]
Further, the center distance between the pins 74 and 75 is set so that the comb teeth 65 are fitted in the grooves 3f of the pallet 3 passing directly below the movable step 63, and the lower surface of the comb teeth 65 is not in contact with the bottom of the grooves 3f. ing.
[0076]
In FIG. 5, reference numerals 77S, 77M, and 77L denote handrails formed of a rubber-based material.
[0077]
The operation of the moving sidewalk shown in FIGS. 1 to 16 will be described below.
[0078]
When the screw rods 16, 24, 33 are rotated by a motor (not shown), the moving roller 18 engaged with the screw grooves 16 a, 24 a, 33 a rotates the screw rods 16, 24, 33. As a result, the pallet 3 is moved along the conveying portions 1A and 1B of the rail 11.
[0079]
At this time, in the transport unit 1A and the transport unit 1B of the rail 11, the moving direction of the pallet 3 is reversed, and the user can be transported simultaneously in two opposing directions by one moving sidewalk.
[0080]
Among the pallets 3 positioned in the transporting portions 1A and 1B of the rail 11, those in which the moving roller 18 is not engaged with the screw grooves 16a, 24a, and 33a are located in front of the pallet 3 in the moving direction. It is pulled by the pallet 3 that moves with the rotation of 24 and 33 via the elastic buffer mechanism 25 and the chain 22.
[0081]
Thereby, in the conveyance parts 1A and 1B of the rail 11, the protrusion 3e of each pallet 3 moves in a state of being fitted in the groove 3f of the pallet 3 adjacent to the rear side in the movement direction of the pallet 3.
[0082]
At this time, the front and rear end portions of adjacent pallets 3 are in an overlapping state, and a large number of users can be transported safely.
[0083]
The moving speed of the pallet 3 increases as the moving roller 18 transitions to the entry / exit range S1, the low speed range M1, and the high speed range L1 of the screw groove 33a, and the moving roller 18 has a high speed range L1 and a low speed range of the screw groove 16a. It becomes low as it changes to M1 and boarding / alighting range S1.
[0084]
Therefore, the pallet 3 moves at a low speed at both end portions of the transport portions 1A and 1B of the rail 11, and the user can easily get on and off the pallet 3, and at the intermediate portion of the transport portions 1A and 1B of the rail 11 The pallet 3 on which the user is boarding can be moved at high speed.
[0085]
When the pallet 3 starts to be pulled by the pallet 3 that moves in advance of the pallet 3, the elastic buffer mechanism 25 buffers excessive tension applied to the chain 22.
[0086]
Thereby, the deformation | transformation of the chain 22 resulting from repeated excessive tension | tensile_strength is suppressed, and the impact with respect to the user who is boarding the pallet 3 is relieve | moderated.
[0087]
Further, in addition to the screw rods 16 and 33, other screw rods 24 are arranged in the intermediate portions of the conveying portions 1A and 1B of the rail 11, so that the tension acting on each chain 22 can be reduced, Therefore, it is possible to further increase the length of the conveying units 1A and 1B of the rail 11.
[0088]
When the pallet 3 approaches a portion near the turning portion 1D of the conveying portion 1A of the rail 11 or a portion near the turning portion 1C of the conveying portion 1B of the rail 11, the moving speed of the pallet 3 gradually decreases and becomes constant. In addition, since the amount of overlapping of the front and rear end portions of the adjacent pallets 3 increases, the user who is on each pallet 3 takes a front-rear space while avoiding interference with other users.
[0089]
Further, when the pallet 3 reaches the ends of the turning portions 1D and 1C of the screw rod 16, the pitch of the screw groove 16a is slightly expanded, so that the pallet 3 is slightly increased in speed, and an appropriate interval is provided between the front and rear. The user can be safely lowered from the pallet 3 sequentially, and congestion at the end point of the pallet 3 can be reduced.
[0090]
When the pallet 3 enters the swivel portions 1C and 1D of the rail 11 directly under the movable step 63, the comb teeth 65 at the tip of the movable step 63 are fitted into the groove 3f of the pallet 3 and are inserted into the groove 3f. Remove the trapped foreign matter.
[0091]
At this time, the copying mechanism 68 swings the movable step 63 up and down along the upper surface of the other pallet 3 preceding the pallet 3 in which the comb teeth 65 are fitted in the grooves 3f, and the comb teeth are formed at the bottom of the grooves 3f. Since the lower surface of 65 is not in contact, wear of comb teeth 65 can be prevented.
[0092]
Further, when the pallet 3 enters the conveying units 1A and 1B from the swivel units 1C and 1D of the rail 11 via the movable step 63, the copying mechanism 68 has the comb teeth 65 inserted in the grooves 3f. The movable step 63 is swung up and down following the upper surface of the other pallet 3 following the pallet 3 to prevent the comb teeth 65 from being worn.
[0093]
When the pallet 3 enters the swivel portions 1C and 1D of the rail 11, the adjacent pallets 3 come close to each other and the inclination angle correction roller 10 rolls on the lower surface of the guide rail 12, so that each pallet 3 is in a forward inclined state. The fitting between the projection 3e of the pallet 3 and the groove 3f is released.
[0094]
Further, the protrusion 3c of each pallet 3 is fitted with a recess 3a at the front edge of the pallet 3 following the pallet 3, and the pallet 3 positioned at the turning parts 1C and 1D is transferred from the conveying parts 1B and 1A to the screw rod. The subsequent pallet 3 fed by 16 moves sequentially toward the transport units 1A and 1B.
[0095]
Furthermore, when the pallet 3 moves from the intermediate part of the swiveling parts 1C and 1D of the rail 11 to the conveying parts 1A and 1B, the adjacent pallet 3 is separated and the tilt angle correction roller 10 with respect to the lower surface of the guide rail 12 is removed. Is released, the forward tilt state of each pallet 3 is canceled, and the protrusion 3e of each pallet 3 is fitted into the groove 3f of another pallet 3 subsequent to the pallet 3.
[0096]
In this way, on the moving sidewalk shown in FIGS. 1 to 16, the user can be safely transported in two opposite directions, and in addition to this, it is possible to alleviate the congestion at the end point of conveyance of the pallet 3. become.
[0097]
It should be noted that the moving sidewalk of the present invention is not limited to the above-described embodiments, and it goes without saying that changes can be made without departing from the scope of the present invention.
[0098]
For example, when the transport units 1A and 1B of the rail 11 are long, a plurality of screw rods 24 can be installed in the middle part of the transport units 1A and 1B to relieve the tension applied to the chain 22. .
[0099]
Further, instead of the spring member 29, an elastic buffer mechanism 25 using gas pressure or liquid viscous resistance can be applied.
[0100]
Furthermore, if two portions where the pitch is constant are set in the thread groove 16a of the screw rod 16 according to the behavior of the user who is on the pallet 3, as shown in FIG. If the part where the pitch of the screw grooves 16a is constant can be set further upstream in the pallet moving direction, the pallet 3 during the decelerating movement can be temporarily moved at a constant speed as shown in FIG. After moving, it can decelerate again.
[0101]
【The invention's effect】
As described above, according to the moving sidewalk of the present invention, the following various excellent effects can be achieved.
[0102]
(1) String member And elastic buffer mechanism for buffering excessive tension applied to the string-like member The adjacent pallets are connected to each other, the pallet moving with the screw rod of the transport unit pulls the subsequent pallet and pushes out the front pallet with the protruding member, and the moving direction of the pallet in one transport unit and the other Since the moving direction of the pallet in the transport section is reversed, the user can be transported simultaneously in two different directions. At the same time, when the pallet begins to be pulled by the pallet that moves in advance of the pallet, the elastic buffering mechanism buffers the excessive tension applied to the string-like member, so that excessive tension is repeatedly applied. The resulting deformation of the string-like member is suppressed, and the impact on the user on the pallet can be mitigated. .
[0103]
(2) Moreover, since the front edge part in the moving direction of each pallet is inserted under the pallet adjacent to the pallet to form a continuous sidewalk surface, a large number of users can be transported safely.
[0104]
(3) Further, the pallet of the conveying unit is further improved by a screw rod in which the pitch of the thread groove gradually narrows from the upstream end in the pallet moving direction toward the downstream side and the pitch of the thread groove slightly increases at the downstream end in the pallet moving direction. Since the speed of the pallet traveling in the portion closer to the downstream side in the moving direction is gradually reduced and then slightly increased, an appropriate interval may be taken before and after each user to alleviate congestion at the pallet transport end point. It becomes possible.
[Brief description of the drawings]
FIG. 1 is a partial plan view showing an example of an embodiment of a moving sidewalk according to the present invention.
FIG. 2 is a graph showing a first example of a change in the moving speed of a pallet.
FIG. 3 is an overall plan view of FIG. 1;
4 is a partial plan view showing a rail and a guide rail in FIG. 1. FIG.
FIG. 5 is a partial side view of FIG. 1;
6 is a side view showing the state of the pallet in the rail transport section of FIG. 1. FIG.
7 is a side view showing a state of the pallet in the turning portion of the rail of FIG. 1. FIG.
8 is a plan view showing a state of the pallet in the turning portion of the rail in FIG. 1. FIG.
9 is a partial perspective view showing a rear end portion of the pallet in FIG. 1. FIG.
10 is a perspective view showing the pallet and the movable step in FIG. 3;
11 is a front view showing a state of a pallet at a transition portion between a rail conveyance unit and a turning unit in FIG. 1; FIG.
12 is a partial side view showing the screw rod of FIG. 1. FIG.
13 is a partial side view showing the screw rod of FIG. 1; FIG.
14 is a partial side view showing the screw rod of FIG. 1. FIG.
15 is a partially cut-away side view showing the elastic buffer mechanism of FIG. 6. FIG.
16 is a side view showing the movable step and the pallet in FIG. 3. FIG.
FIG. 17 is a graph showing a second example of a change in the moving speed of the pallet.
FIG. 18 is a graph showing a third example of a change in the moving speed of the pallet.
FIG. 19 is a partially cut-away side view showing an engaged state between a moving side pallet and a screw shaft described in Japanese Patent Publication No. 56-257.
20 is a front view of FIG. 19. FIG.
21 is a partially cutaway side view showing a mounting state of the support frame on the pallet in FIG.
22 is a side view showing the entire screw shaft in FIG. 19. FIG.
23 is a plan view showing a state where the screw shafts in FIG. 19 are arranged in a substantially annular shape.
[Explanation of symbols]
1A Transport unit
1B Transport section
1C Turning part
1D turning part
3 Palette
3c Projection member
11 rails
16 Screw rod
16a thread groove
18 Moving roller (Thrust transmission member)
22 Chain (string member)
24 Screw rod

Claims (1)

An annular rail having two arcuate swivel portions and a transport portion connecting both swivel portions and arranged substantially horizontally, a number of pallets that can be moved in one direction while being guided by the rails, and the transport Screw rods disposed on the downstream side of the pallet movement direction of the pallet and rotatable in the circumferential direction, and a thrust transmission member provided on each pallet and engageable with a screw groove of the screw rod, The pitch of the grooves is formed so that it gradually narrows from the upstream end in the pallet moving direction toward the downstream side and slightly expands at the downstream end in the pallet moving direction. Protrusion members that can contact the front edge of the pallet adjacent to the pallet are provided, and the front edge of the movement direction of each pallet is inserted into the lower side of the pallet adjacent to the front side of the movement direction of the pallet. Travelator, characterized in that linked by adjacent pallets string material and an elastic buffer mechanism for buffering the excessive tension applied to the cord-like member.

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