JPH02291386A - Handrail of conveyor - Google Patents

Abstract

PURPOSE:To obtain a handrail device which can be applied to a freely bending conveyer by providing a handrail structure comprising a handrail and an expansion mechanism for expanding and contracting the handrail and a driving device for driving the handrail structure. CONSTITUTION:In a conveyer 2 driven along a path including a curved portion, there are provided a handrail structure comprising handrails 4 having flexibility and expansibility, which are disposed in such a manner as to move along the conveyer 2, on the side of the conveyer 2 and an expansion mechanism which is moved together along the handrails 4 and adapted to expand and contract the handrails 4, and a driving device comprising an electric motor 5 for driving the handrail structure in synchronization with the conveyer 2, a speed reducer 6 and so on. In this arrangement, the handrails 4 have flexibility and expansibility so as to correspond to the change of advancing direction of the conveyer 2. In a curved portion and a curvature changing portion, the handrails 4 are increased and decreased in speed by expansion and contraction of the handrails 4, and the handrails 4 are expanded and contracted by the expansion mechanism. The handrail structure comprising the handrails 4 and the expansion mechanism is driven in synchronization with the conveyor 2.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention mainly relates to an endless conveyor that is a combination of straight lines and curved lines and is driven along a curved path in the vertical and horizontal directions. The present invention relates to a handrail device applied to a flexible conveyor.

[Conventional technology]

Conventional conveyors such as S-force rakes or dynamic walkways are generally linear. Also, Figure 19 is a plan view of the same conveyor, U is the conveyor, ■
indicates a handrail. In a conventional conveyor, the curvature of its path is constant. In other words, the handrails do not expand or contract in either the linear conveyor or the constant curvature spiral conveyor, and the series of handrails moves at the same speed at any position. In a spiral wedge conveyor, the movement speed of the left and right handrails is different, but the movement speed is constant at any position in a series of handrails.

FIG. 20 is a rotated side view of a conventional handrail device for a linear conveyor or a developed view of a conventional handrail device for a threaded conveyor. The handrail is driven by a power source such as an electric motor or a hydraulic motor via a transmission mechanism such as a gear or a chain. The moving speed of each handrail is adjusted to synchronize with the speed of each side end of the conveyor.

[Problem to be solved by the invention]

FIG. 17 is an external view of a bendable conveyor to which the handrail device of the present invention is applied. In the figure, ■ is a boarding device, 2 is a conveyor, 3 is a side wall, and 4 is a handrail. This bendable conveyor is a conveyor that is driven in circulation on a path made by combining straight sections and curved sections, with the treads of endlessly connected stethoscopes always exposed on the upper surface. A normal handrail device as shown in FIG. 20 cannot be applied to such a bendable conhair that moves along a path of varying curvature.

In a bendable conveyor, there are changes in curvature and speed along the route, so the following problems arise in the handrail device used there.

(1) The handrail moves at different speeds on the inside and outside of the bend. Furthermore, it is necessary to change the moving speed of the handrail every time the curvature changes even on the same side.

(2) Since the length of the handrail partially changes when the curvature changes, a mechanism is required to absorb the change in length.

(3) In the boarding and alighting section provided on the side of the conveyor, it is necessary that the handrails do not obstruct boarding and alighting.

The present invention takes the above-mentioned problems into account and provides a handrail device that can be applied to a bendable conveyor.

[Means to solve the problem]

The present invention solves the above problems and relates to a handrail device for a conveyor as described below.

(1) In a conveyor that is driven along a path including a curved section; a handrail with visibility and stretchability provided on the side of the conveyor so as to be movable along the conveyor; A handrail device for a conveyor, characterized in that it comprises a handrail structure comprising a telescopic mechanism that is provided and moves together with the handrail to extend and retract the handrail; and a drive device that drives the handrail structure in synchronization with the conveyor.

(2) In a conveyor that is driven along a path including a curved portion; the conveyor is provided on the side and has comb teeth at its front and rear ends, and the comb teeth are slidably engaged in the front and rear directions. A handrail block made of a plurality of flexible materials in which adjacent pieces are connected to each other, and a link formed in a zigzag shape connected by an upper joint shaft and a lower joint shaft below the handrail block. a mechanism, a mechanism provided between adjacent upper joint shafts of the link mechanism to limit the interval therebetween, and a plurality of upper and lower rollers each mounted on each of the upper and lower joint shafts, A handrail structure in which the above-mentioned parts are integrated into an endless shape by connecting the joint shaft to each of the handrail pro-noks; upper and lower guide rails that guide the upper and lower rollers of the handrail structure; and the handrail. A handrail device for a conveyor, comprising a drive device that drives the structure in synchronization with the conveyor belt.

(3) A handrail device for a conveyor according to (1) or (2) above, characterized in that it is equipped with a handrail sliding guide and a handrail tensioning device that pull down the handrail structure below the boarding board provided on the side of the conveyor. .

[Effect]

(1) Since the handrail of the present invention has flexibility and stretchability, it can respond to changes in the direction of movement of the conveyor.

Speed-up and deceleration of the handrail at curved sections and curvature-changing sections is performed by extending and contracting the handrail. This extension and contraction of the handrail is performed by an extension and contraction mechanism.

A handrail structure consisting of a handrail and a telescoping mechanism is driven by a drive device in synchronization with the conveyor.

(2) In the handrail structure of the present invention, the handrail is expanded and contracted by adjusting the interval between the rail surfaces of the guide rail that guides the rollers provided at the upper and lower joint shafts of the series of zigzag link mechanisms. The handrail as a whole expands and contracts by sliding the comb-like portions of the handrail block. When the handrail is extended, the distance between the upper and lower rail surfaces is narrowed, and when the handrail is shortened, the distance between the upper and lower rail surfaces is widened, whereby the handrail is expanded and contracted, and the speed of movement of the handrail changes accordingly.

(3) At the boarding section on the side of the conveyor, the handrail is pulled down below the boarding step board while applying tension to the handrail by the action of the handrail sliding guide and the handrail tensioning device. On this occasion,
If the handrail is made up of handrail blocks, make sure that the upper joint axes of the links do not extend beyond a certain length.
A mechanism is provided to limit the spacing so that the handrail block remains continuous and thus can be pulled downwardly under tension.

〔Example〕

FIG. 1 is a plan view of the first embodiment of the handrail device of the present invention, and FIG.
The figure is a sectional view taken along the line AA in FIG. 1, and FIG. 3 is a sectional view taken along the line BB in FIG. In Figures 1 and 2, 2 is a conveyor, 3 is a side wall, 4 is a flexible and stretchable handrail, 5 is an electric motor that is the power source for moving the conveyor, and 6 is a speed reducer directly connected to the electric motor 5. , 7 is a sprocket attached to the output shaft of the reducer, 8 is the main shaft, 9 is a sprocket attached to the main shaft 8, 10 is a chain that transmits power from the sprocket 7 to the sprocket 9, and 11 is for driving the conveyor 2. A sprocket is attached to the main shaft 8, and pulleys 12 are attached to both ends of the main shaft 8, respectively. pulley 12
Each part of the mechanism described below, from the handrail 4 to the handrail 4, is provided in pairs on both sides of the conveyor 2 in a symmetrical shape. , and explain everything on both sides. 13 is a belt, 14 is a pulley, and the pulley 14 receives power from the booley 12 via the belt 13. 15 is a shaft, and 16 is a pulley. In Fig. 3, l7 is the handrail drive belt, 1
7X is a convex portion of the handrail drive belt 17, and 18 is an idle pulley for receiving the handrail drive belt 17.
9 is a belt tension mechanism for tensioning the handrail drive belt, and 20 is a guide roller. The drive device is a portion that generates and transmits power, from the electric motor 5 as the power source described above to the handrail drive belt 17 having the convex portion 17X.

FIG. 4 is a plan view of the handrail structure provided above and close to the drive device in the above embodiment, and FIG.
6 shows a sectional view taken along the line DD in FIG. 4.

The handrail structure is a combination of a flexible and stretchable handrail and a telescoping mechanism that extends and contracts the handrail. 4 to 6, 25 is an upper roller, 26 is a lower roller, 27 is a link that connects the upper roller 25 and lower roller 26, 25A and 26A are connecting pins, and 2nd is a link that connects the upper roller 25 and lower roller 26. A guide rail 29 is a holder, 4 is a wave-shaped handrail having flexibility and elasticity, and the holder 29
and handrail 4 are connected as shown in FIG. Also,
Reference numeral 26X in FIG. 6 is a hook attached to the tip of the pin 26A, which is pushed by the convex portion 17X of the handrail drive belt in order to move the handrail structure as shown in FIG.

In the handrail device of this embodiment having the above structure, as shown in FIGS. 2 and 3, the power of the electric motor 5 is first transmitted to the sprocket 7 via the reducer 6. The rotation of the sprocket 7 is transmitted to the sprocket 9 via the chain 10, causing the main shaft 8 to rotate. Pulley 12 on main shaft 8
is attached, and the rotation of the pulley 12 is controlled by the belt 1.
3 to the pulley 14. The power transmitted to the pulley 14 is transmitted to the pulley l6 by the shaft 15. The handrail drive belt 17 is rotated by the rotation of the booley 16.
rotates while being guided by an idle pulley 18 and a plurality of guide rollers 20. As the handrail drive belt 17 rotates, the convex portion 17X of the handrail drive belt drives the hook 26X at the tip of the pin 26A as shown in FIG. 6, thereby creating the handrail structure shown in FIGS. 4 to 6. move it.

The handrail structure shown in FIGS. 4 to 6 above can be used for either a straight section or a curved section of a conveyor including a curved path, but in a conveyor as shown in FIG. changes when the conveyor moves from a straight line to a curve, when it moves from a curve to a straight line, and when the radius of curvature of the curve changes. Therefore, in the handrail structure of this embodiment, the movement speed of the handrail can be changed by the following action.

That is, by changing the interval h between the upper and lower rail surfaces of the handrail guide rail 28 shown in FIG. 6, the distance between the adjacent upper rollers 25 shown in FIG. 5 can be reduced! The length of changes,
The handrail 4 expands and contracts, and the speed of movement of the handrail locally changes accordingly.

Changes in the moving speed of the handrail 4 are realized by the following principle. In Figure 5, the distance between adjacent upper rollers! , the length of the link 27 is C, and the diameters of the upper roller 25 and lower roller 26 are d, then the following equation holds true from the Pythagorean theorem.

Therefore, since the length C of the link 27 and the diameter d of the upper roller 25 and lower roller 26 are constant, from equation (2), the distance between the upper rollers 25 can be maintained by changing h! changes, and the handrail 4 locally expands and contracts accordingly.
Its movement speed changes.

Specifically, in a place where the moving speed of the handrail 4 should be slowed down, if the distance h between the upper and lower rail surfaces of the handrail guide rail is increased, the distance 2 between the upper rollers will be shortened, and the handrail will move slowly. Furthermore, in places where the handrail 4 should move at a faster speed, if the distance h between the upper and lower rail surfaces of the handrail guide rail is made smaller, the distance 2 between the upper rollers becomes longer, and the handrail moves faster. At this time, since the adjacent upper rollers 25 are connected by a stretchable corrugated handrail 4 via a holder 29, the handrail 4 expands and contracts as the distance l between the upper rollers 25 changes. The above action realizes a change in the moving speed of the handrail.

FIG. 7 is a plan view of the second embodiment of the handrail device of the present invention;
The figure is a side view of the above embodiment (partially showing the E-E section in Fig. 7), Fig. 9 is the FF sectional view in Fig. 8, and Fig. 10 is the GG section in Fig. 8. 11 is a sectional view taken along the line H--H in FIG. 8. In these figures, reference numeral 102 is a handrail block made of an elastic material and having comb-like portions at both ends. This handrail block 102 has adjacent handrail blocks that are slidably engaged with each other in the front-rear direction at the comb-shaped portions at both ends thereof, forming the main part of a series of handrails, and is expandable and retractable as a whole. There is.

Reference numeral 103 denotes a cover made of a flexible material to prevent passengers from touching the above-mentioned engaging portion and causing danger. In the drawings, the reference numerals 102 and 103 are given numerals (a) to (C) to distinguish each member for convenience of later explanation. Cover 1 0 3 (a) is fixed to handrail block 102 (a). Similarly cover 1
03(b) and 1 0 3 (C) are fixed to handrail blocks 102(b) and 1 0 2 (C), respectively. 104 is a plate attached to the handrail block 102, 105 is a bracket attached to the plate 104, and the bracket 105 is long in the direction of movement of the conveyor and has a length 105X at its end. 1o6 is a shaft passing through the bracket 105 and serving as an upper articulation axis of a link to be described later, 107 is a stopper link, 10B is an upper roller, and 110 is a link. stopper link 107,
A pair of links 110, another pair of adjacent links 110
, and the pair of upper rollers 108 are connected to the shaft 10.
6, which are pivotally or rotatably connected to the bracket and form upper joints of the respective links. A pin 107A is provided at the end of the stopper link 107, and is inserted into a long hole 105X of an adjacent bracket 105. 111 is an axis that becomes the lower joint axis of the link described later;
112 is a lower roller, and 113 is a spacer. The lower end of a pair of links 110, the other pair of adjacent links 11
0 and a pair of lower rollers 112 are rotatably or rotatably connected by a shaft 111 via a spacer 113 to form a lower joint of each of the links. The links 110 are connected at both ends to adjacent links 110 by shafts 106 and 111, and are connected in a zigzag manner to form a link mechanism as a whole, as shown in FIG. An endless handrail structure is formed by each of the above parts. Reference numeral 109 designates an upper guide rail that moves and guides the upper roller 108 on its upper rail surface, and 114 represents a lower guide rail that rolls and guides the lower roller 112 on its lower rail surface.

FIG. 12 is a side view of the handrail drive section of the above embodiment. In the figure, 115 is a handrail drive belt, and 116 is a drive pulley. This drive pulley receives power from a drive source that drives the conveyor body via a transmission mechanism such as a chain, gears, or belt, and drives the handrail drive belt in synchronization with the conveyor body. 11
7 is an idle pulley that supports the handrail drive belt I-115; 118 is a belt tension mechanism that is connected to the idle pulley 117 and tensions the handrail drive belt;
119 is a guide roller that guides the handrail drive belt 115. 115X is a convex portion provided on the handrail drive belt 115 for pushing the spacer 113 fitted into the shaft 111 and driving the handrail structure.

FIG. 13 is a side view of the handrail crawling device in the getting-on/off section of the conveyor of the above embodiment, and FIG. 14 is a sectional view taken along the line JJ in FIG. 13. In these figures, 120 is a boarding board, 1
Reference numeral 21 designates a handrail sliding guide provided below the boarding board 120, and 122 designates a handrail tensioning device provided at the front and rear ends of the handrail sliding guide, respectively. It makes the structure tense. 101 is a tread of a moving conveyor. FIG. 15 is an enlarged view of section K in FIG.
FIG. 6 is a sectional view taken along line L-L in FIG. 15. Both figures show the shape of the handrail structure when the handrail is submerged. In FIGS. 15 and 16, 109A is an upper guide rail that guides the upper roller above it.

The operation of the handrail device having the configuration described above will be described. First, the handrail device is driven as follows. In FIG. 12, when the drive pulley 116 rotates by receiving power from the power source of the conveyor body (not shown),
The handrail drive belt 115 is driven, and the convex portion 115X of the belt hooks the spacer 113 fitted to the shaft 111 of the lower roller, thereby driving the handrail structure. Therefore, the handrail structure is driven synchronously with the conveyor body. This handrail drive device is provided on a straight section or a constant curvature section of the conveyor, and the drive boley 116 is configured to rotate at a predetermined constant rotation speed.

The expansion and contraction of the handrail at the bend of the conveyor, that is, the adjustment of the moving speed, is performed as follows. In Figure 8,
Upper guide rail 109 and lower guide rail 11
By changing the distance h between the respective rail surfaces of 4, the distance l between adjacent upper rollers 108 changes, and the depth of engagement of the comb-shaped portions of adjacent handrail blocks 102 changes, and the handrail structure changes at that portion. The body expands and contracts, and if the handrail is moving, its movement speed changes. In FIG. 8, the upper guide rail 109 and the lower guide rail 1
14, the distance between the adjacent upper rollers 108 is 2, the length of the work tank 110 is C, and the diameter of each of the upper roller 108 and lower roller 112 is d. As in the example, according to the Pythagorean theorem, the following holds true. Since the length C of the link 110 and the diameter d of the upper roller 108 and lower roller 112 are constant, from equation (4), by changing h, the distance l between adjacent upper rollers changes, thereby The handrail structure expands and contracts, changing the speed of movement.

Specifically, when the conveyor curves, it is necessary to shorten the handrail on the inside of the curve and extend the handrail on the outside. By reducing the interval h, the conveyor and handrail can be synchronized.

Next, we will discuss the intrusion of handrails in the boarding and alighting areas. Since the conveyor to which the handrail device of this embodiment is applied is endlessly connected, passengers can get on and off from the side of the conveyor. Therefore, the handrail is moved downward so as not to obstruct passengers getting on and off the train. In FIG. 13, the handrail structure that has hidden below the boarding board 120 is
It is guided by a handrail diving guide 121, and the handrail diving guide 121 is pulled downward by a pair of front and rear handrail tensioning devices 122 to tension the entire handrail structure. 15th
The figure and FIG. 16 show a state in which the handrail structure is bent by the handrail submergence guide 121. In this state, unlike the normal state, as shown in FIG. 16, the upper roller 108 is guided by the anover guide rail 109A not on its lower side but on its upper side.

At this time, the pin 107A provided on the stopper link 107 hits the end of the elongated hole 105x of the bracket 105, the interval between the handrail broncks 102 is kept constant, and the function of the link to absorb the handrail expansion and contraction is eliminated. Due to this action, the handrail structure moves in a band shape without expanding or contracting in the handrail submergence guide part, so that the pair of handrail tensioning devices 12
2 can make it tense. Note that the handrail crawling device shown in FIG. 13 can also be applied to the handrail device of the first embodiment.

[Effects of the Invention] The conveyor handrail device of the present invention includes a flexible and stretchable handrail that is provided on the side of the conveyor so as to be movable along the conveyor, and a handrail that is provided along the handrail and that is movable along the conveyor. The handrail structure, which is composed of a telescoping mechanism that moves together with the handrail and extends and retracts the handrail, is driven in synchronization with the conveyor, so it can be applied to a conveyor that is driven along a path including a curve. In curved sections and curvature-changing sections where it is necessary to locally change the handrail's moving speed, the handrail can be moved as a whole in synchronization with the conveyor while changing the speed of the handrail by expanding and contracting the handrail. In addition, in the boarding and alighting section, the handrail is hidden below the boarding and alighting board, so the vehicle can be operated without interfering with the boarding and alighting of passengers.

[Brief explanation of drawings]

Fig. 1 is a plan view of the first embodiment of the present invention, Fig. 2 is a sectional view taken along line AA in Fig. 1, Fig. 3 is a BB sectional view in Fig. 1, and Fig. 4 is a handrail of the above embodiment. A plan view of the structure, FIG. 5 is a cross-sectional view taken along line CC in FIG. 4, FIG. 6 is a cross-sectional view taken along line D-D in FIG. 4, and FIG. 7 is a plan view of the second embodiment of the present invention. , FIG. 8 is a side view of the above embodiment (partially including the EE cross section in FIG. 7), FIG. 9 is a sectional view taken along the FF line in FIG. 8, and FIG. 10 is a side view taken along the G-- line in FIG. G sectional view, FIG. 11 is a HH sectional view in FIG. 8, FIG. 12 is a side view of the handrail drive unit of the above embodiment, FIG. The figure is J-J in Figure 13.
15 is an enlarged view of part K in FIG. 13, FIG. 16 is a sectional view LL in FIG. 15, and FIG. 17 is a perspective view of a conveyor to which the handrail device of the present invention is applied. 19 is a plan view of the same conveyor, and FIG. 20 is a side view or developed view of a handrail device of a conventional conveyor. DESCRIPTION OF SYMBOLS 1... Getting on/off device, 2... Conveyor, 3... Side wall, 4... Handrail, 5... Electric motor, 6... Reduction gear, 7... Subrocket, 8... Main shaft, 9...
Sprocket, 10...Chain, 11...Sprocket, 12...Pulley 13...Belt, 14...Pulley 15...Shaft, 16...
・Pulley 17...handrail drive belt, 17X...convex portion of handrail drive belt, 18...
Idle pulley 19... Belt tension mechanism, 20... Guide roller, 25... Upper roller, 25A... Connection bin, 26... Lower roller, 26A... Connection pin, 26X... Hook, 27・
...Link, 28...Handrail guide rail, 29...
Holder 101...Conveyor tread, 102...
Handrail block, 103...Cover 104...Plate, 105...Bracket, 105-X...
・Bracket long hole, 106...shaft 107...
Stopper link, 7A...Stopper link pin, 8...Upper roller 9...Upper guide rail, O...Link, 111...Shaft, 2...Lower row-7, 113... Spacer, 4... Lower guide rail, 5... Handrail drive belt, 5X... Convex portion of handrail drive belt, 6... Drive booley 7... Idle pulley 8... Belt tension mechanism, 9...Guide roller, 120...Getting on and off step board, 1.
...Handrail diving guide, 2...Handrail tensioning device. Agent Patent Attorney Akatsuki Sakama 2 others Figure 1 Figure 2 Flash 4 Handrail 6 Extinguisher Figure 6 - 5' - Ministry official Tofuifhelt 7' / Younger brother 4 En 5th side Figure 7 Figure F 3 Figure q En 702 handrail lock l Fig. 10 10' (striking Fig. 13 814 Fig. 11 Fig. 10'? 1'7 Hidden 1 Toguri Shigl Figure 18 1':?En 20th Flash

Claims (3)

[Claims] (1) In a conveyor that is driven along a path including a curved section; a flexible and stretchable handrail provided on the side of the conveyor so as to be movable along the conveyor; A handrail device for a conveyor, characterized in that it is equipped with a handrail structure that is provided with a telescoping mechanism that moves together with the handrail and expands and contracts the handrail; and a drive device that drives the handrail structure in synchronization with the conveyor. . (2) In a conveyor that is driven along a path including a curved portion; the conveyor is provided on the side and has comb teeth at its front and rear ends, and the comb teeth are slidably engaged in the front and rear directions. A handrail block made of a plurality of flexible materials in which adjacent ones are connected together, and a link formed in a zigzag shape connected by an upper joint shaft and a lower joint shaft below the handrail block. a mechanism, a mechanism provided between adjacent upper joint shafts of the link mechanism to limit the interval therebetween, and a plurality of upper and lower rollers each mounted on each of the upper and lower joint shafts, A handrail structure in which a shaft is connected to each of the handrail blocks and each of the above parts is integrated into an endless shape; an upper and lower guide rail that guides each of the upper and lower rollers of the handrail structure; and the handrail structure. A handrail device for a conveyor, comprising a drive device that drives the conveyor in synchronization with the conveyor. (3) The conveyor handrail according to claim (1) or (2), characterized in that it is equipped with a handrail sliding guide and a handrail tensioning device for pulling down the handrail structure below the boarding board provided on the side of the conveyor. Device.