JPH0526983U - Belt type tread belt slip prevention device for moving walkways - Google Patents

Abstract

(57) [Abstract] [Purpose] An object is to obtain a tread belt drive device that prevents the tread belt of a belt-type moving walkway (man conveyor) from slipping during driving. [Structure] Concave portions 4 are formed at both ends in the width direction of a belt type moving sidewalk tread belt 1, and a high friction material lining 6 is formed on an outer peripheral surface of a drive pulley 2 for driving the tread belt 1.
And the protrusions 5 having the same pitch as the recesses 4 formed in the tread belt 1 are provided at both ends of the outer peripheral surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tread belt belt driving device for a belt-type moving sidewalk (man conveyor), and in particular, to a slip prevention device for a tread belt belt during driving.

[0002]

[Prior Art]

 In recent years, a so-called moving walkway for transporting personnel using an endless tread belt does not need to have a complicated structure like a conventional staircase type escalator, and as shown in FIG. 4, it is simply a belt drive pulley. The endless tread belt 1'is wound between the 2'and the belt tension pulley (not shown), and the tread belt 1'is interposed between the drive pulley 1'and the belt tension pulley. Since only a guide roller (not shown) is required for guiding, the structure is simple and maintenance is easy.

Further, since it is sufficient for the thickness direction to have a space for reciprocating the tread belt 1 ′, the space can be made thin, so that it can be easily installed on a flat floor surface. The moving part is a flat belt, which is comfortable and safe to ride, and it does not slip like metal. It has advantages such as the following, and is attracting attention as a means of transportation for stations, department stores, shopping centers, and parking lots.

[0004]

[Problems to be solved by the device]

 The moving walkway has various advantages as described above. Moreover, while the length can be freely selected by changing the length of the tread belt, it is inevitable that the belt will stretch due to aging during use because the belt is used.

For this reason, conventionally, the surface of the drive pulley 2'is provided with a lining 6'of a high friction material such as rubber, and the driven side pulley is always tensioned to the tread belt 1'as a tension pulley. Is added to prevent the slip between the drive pulley 2'and the tread belt 1 ', but the tread belt 1'expands unexpectedly or is added to the tension pulley. When the applied tension becomes small for some reason, it cannot be said that slippage occurs between the drive pulley 2'and the tread belt 1 ', and as a result the drive pulley 2'is idle. Then, it caused an accident such as a passenger's fall.

This invention surely prevents slippage between the drive pulley and the tread belt even if the tread belt is abnormally stretched or the tension pulley is changed in tension. It is intended for and.

[0007]

[Means for Solving the Problems]

 According to the present invention, the recesses 4 are formed at equal pitches at both ends in the width direction of the belt type footpath belt 1 for a moving sidewalk, and a high friction material lining 6 is provided on the outer peripheral surface of the drive belt 2 for the footstep belt. Further, there is provided a belt-type moving footpath tread belt anti-slip device characterized in that projections 5 having the same pitch as the recesses 4 formed in the tread belt 1 are provided at both ends of the outer peripheral surface.

[0008]

【Example】

 The present invention will be described below with reference to the embodiments shown in the drawings.

The tread belt 1 is wound around a drive pulley 2 and a driven pulley (tension pulley) (not shown), and moves (rotates) as the drive pulley 2 rotates. It is supposed to do. 3 is a snap pulley.

The tread belt 1 is provided with recesses 4 (through holes in this embodiment) at equal intervals at both ends along the moving direction.

Further, the drive pulley 2 is provided with protrusions 5 at both ends of the outer peripheral surface. The protrusions 5 are provided at the same pitch as the recesses 4 provided on the tread belt 1, and when the driving pulley 2 is driven, the protrusions 5 and the recesses 4 provided on the tread belt 1 are alternately arranged. It is designed to rotate while engaging with.

A plurality of high friction material linings 6 such as rubber linings are annularly provided between the protrusions 5 in the middle of the drive pulley 2. It is needless to say that the high friction material lining 6 may be formed in a plurality of annular shapes and may cover the substantially entire width of the drive pulley 2.

Reference numerals 7a and 7b are bearings of the drive pulley 2, and 8 is a rocket provided coaxially with the drive pulley 2. A sprocket 10 and a roller chain or a roller chain by a motor 9 with a brake are used. It is driven (rotated) via the V-belt 11.

Next, the operation will be described. When the braked motor 9 is activated, the sprocket 8 provided on the drive pulley 2 is rotated via the sprocket 10 and the roller chain 11.

By the rotation of the sprocket 8, the drive pulley 2 is rotated, and the tread belt 1 is also driven (rotated). At this time, a high friction material lining 6 such as rubber lining is applied to the central portion of the outer peripheral surface of the drive pulley 2, and in a normal state, the friction force between the lining 6 and the tread belt 1 causes The tread belt 1 is driven without slipping.

For example, the tread belt 1 stretches abnormally for some reason. If the frictional force between the driving pulley 2 and the tread belt 1 decreases due to a sudden decrease in the tension of the tension pulley or a decrease in the friction coefficient due to the tread belt 1 getting wet, the drive pulley is reduced. The friction force between the lining 6 and the tread belt 1 provided on the pulley 2 does not allow the tread belt 1 to be pulled, and only the drive pulley 2 idles.

However, in the present invention, when the drive pulley 2 and the tread belt 1 slip and the drive pulley 2 tries to idle, the protrusion 5 provided on the drive pulley 2 and the tread belt 1 are Since the recessed portion 4 provided is engaged, the tread belt 1 is pulled through the protrusion 5 and therefore does not slip.

[0018]

[Effect of the device]

 According to the present invention, slipping of the tread belt (movement of the drive pulley) on a belt-type moving sidewalk can be reliably prevented, so that the tread belt does not slip and suddenly stop or retreat. It is possible to prevent accidents in which a person becomes a shogi player.

[Brief description of drawings]

FIG. 1 is a plan view of an essential part of a belt-type moving walkway embodying the present invention.

FIG. 2 is a side sectional view of the drive pulley section.

FIG. 3 is a front view of the drive pulley.

FIG. 4 is a schematic side sectional view of a conventional belt-type moving walkway.

[Explanation of symbols]

 1 Tread belt 2 Drive pulley 4 Recessed portion (of tread belt) 5 Convex portion (of drive pulley)

Claims (2)

[Scope of utility model registration request] 1. A belt-type moving sidewalk tread belt is formed with recesses at both ends in the width direction at equal pitches, and a high friction material lining is applied to the outer peripheral surface of the tread belt drive pulley, and the outer peripheral surface is also provided. A slip prevention device for a belt type footpath belt for moving walkways, characterized in that projections having the same pitch as the recesses provided on the tread belt are provided at both ends. 2. The slip prevention device for a belt type tread belt for a moving sidewalk according to claim 1, wherein the recess is a through hole.