JP2002068653A - Conveyer belt for conveying personnel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent hindrance to operation by holding down the bending amount of a central part in the width direction to the minimum even in case of a large belt width as much as 1100 mm or more in a conveyer belt for conveying personnel. SOLUTION: In this conveyer belt 10 for conveying personnel having an upper cover rubber 22, a lower cover rubber 24, a longitudinal reinforced steel cord 28 forming the longitudinal reinforcement, and a lateral rigid layer for applying rigidity in the width direction to the belt, and which is wrapped round pulleys like an endless ring, a rigid plate piece 30 having a flat section and extending in the width direction of the belt is used as a constituent material of the lateral rigid layer, and disposed at a designated pitch P in the longitudinal direction of the belt 10 with the direction of thickness pointed toward the direction of thickness of the belt to constitute the lateral rigid layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor belt for transporting personnel by placing personnel on the upper surface of the belt.

[0002]

2. Description of the Related Art Conventionally, there has been known a conveyor system for personnel transport in which a conveyor belt is looped around an endless belt between pulleys and driven to rotate, and a person is transported by placing a person on the upper surface of the belt on the transport side. is there. FIG. 6 shows an example. In the figure, reference numeral 200 denotes a conveyor belt for personnel transport wound around a head pulley (drive pulley) 202 and a tail pulley (driven pulley) 204 in an endless loop, wherein 200a denotes a transport side, and 200b denotes a return side. In the case of the conveyor device for transporting personnel, the conveyor belt 200 places personnel on the upper surface thereof on the transport side 200a, and transports the personnel as the conveyor belt 200 moves.

Here, the conveyor belt 200 has a cross-sectional configuration as shown in FIG. In the figure, 206 is an upper cover rubber, 208 is a lower cover rubber, 21
0 is an intermediate rubber layer. Inside the conveyor belt 200, longitudinally reinforced steel cords 212 extending in the longitudinal direction are provided.
And a laterally rigid steel cord 21 extending in the width direction of the belt
6 are buried.

Here, the longitudinal reinforcing steel cords 212 reinforce the conveyor belt 200 in the longitudinal direction, and a longitudinal reinforcing layer is constituted by a number of longitudinal reinforcing steel cords 212 arranged at a predetermined pitch in the belt width direction. .
The lateral rigid steel cord 216 is a conveyor belt 20.
The lateral rigidity layer is constituted by a large number of lateral rigidity steel cords 216, which are provided at a predetermined pitch in the longitudinal direction in order to impart necessary lateral rigidity to zero.
The lateral rigidity layers are embedded at two locations above and below between the intermediate rubber layer 210 and the upper cover rubber 206 and between the intermediate rubber layer 210 and the lower cover rubber 208.

In FIG. 1B, reference numeral 218 denotes a conveyor belt 2 on the conveying side 200a of the conveyor belt 200.
00, a plurality of support rollers arranged at both lower sides in the width direction at predetermined pitches along the moving direction of the conveyor belt 200. Many support rollers 2
18 supports the weight.

[0006]

However, in the case of this conveyor system for conveying personnel, the conveyor belt 200 is supported only by the supporting rollers 218 only at the both ends in the width direction. There is a problem of bending, especially when the belt width is widened to increase the transport capacity (for example, when the width exceeds 1100 mm)
There is a possibility that the lateral rigidity in the width direction is insufficient, the amount of deflection in the central portion increases, and the stability (ride comfort) of the pedestrian deteriorates.

[0007]

SUMMARY OF THE INVENTION The conveyor belt for transporting personnel according to the present invention has been devised to solve such a problem. According to the first aspect of the present invention, (a) an upper cover rubber constituting a belt surface portion, a lower cover rubber constituting a belt back surface portion, and (b) a reinforcement embedded in the belt to provide reinforcement in the longitudinal direction. It has a vertical reinforcing layer and (c) a lateral rigid layer embedded in the belt to impart rigidity in the width direction, and is wound endlessly between pulleys and transported by placing personnel on the upper surface of the belt on the transport side. In a conveyor belt for conveying personnel, a rigid plate having a flat cross section extending in the width direction of the belt is used as a constituent material of the lateral rigid layer, and the rigid plate is oriented such that its thickness direction is in the belt thickness direction and the longitudinal direction of the belt. Characterized in that they are arranged at a predetermined pitch in the direction to form the lateral rigid layer.

According to a second aspect of the present invention, in the first aspect, the conveyor belt has a wide width of more than 1100 mm.

According to a third aspect of the present invention, there is provided the belt according to any one of the first and second aspects, wherein the rigid plate members are individually connected to the inside of the belt without being vertically connected by a connecting wire for aligning the arrangement. It is characterized by being arranged and buried.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the rigid plate is made of a steel material or a resin material.

A fifth aspect of the present invention is characterized in that, in the fourth aspect, the rigid plate is made of steel and the outer surface is subjected to galvanization.

According to a sixth aspect of the present invention, in accordance with any one of the first to fifth aspects, a breaker layer which suppresses vulcanization shrinkage of the rubber material and mainly functions to restrain the shape of the belt in the width direction is embedded therein. It is characterized by the following.

[0013]

As described above, according to the present invention, rigid plate members having a flat cross section extending in the width direction of the belt are arranged at a predetermined pitch in the longitudinal direction of the belt such that the thickness direction thereof is oriented in the belt thickness direction. Therefore, in the case of the conveyor belt for transporting personnel according to the present invention, in which the lateral rigid layer inside the belt is formed, compared with a conventional belt using a steel cord as a constituent material of the lateral rigid layer, the belt has a greater rigidity. The lateral rigidity in the width direction can be dramatically increased, and therefore, the amount of deflection at the center in the width direction can be suppressed as small as possible, and the stability (ride comfort) of pedestrians is improved.

That is, when the belt width is more than 1100 mm, a predetermined load is applied to the center in the width direction with a predetermined position near both ends in the width direction of the belt as a fulcrum. When applied, the amount of deflection can be suppressed to a small amount of deflection that could not be achieved by a conventional belt, specifically, to 1% or less of the distance between both fulcrums. As a result, it is possible to greatly improve the transport capacity of the conveyor belt for transporting personnel.

However, the present invention is of course applicable to a belt having a belt width of 1100 mm or less. In this case, the thickness of the belt can be reduced while securing necessary lateral rigidity.
Alternatively, conventionally, it was necessary to provide the lateral rigid layer at the upper and lower two places, but it is also possible to provide only one of the upper and lower places in some cases.

By the way, when the rigid plate material is buried inside the belt as a constituent material of the lateral rigid layer, it is also possible to arrange the rigid plate material at a predetermined pitch so that its thickness direction is directed to the longitudinal direction of the belt. However, in this case, the thickness of the belt is inevitably too large. However, in the present invention, the rigid plate member is disposed so that its thickness direction is directed to the belt thickness direction, thereby obtaining an advantage that the thickness of the belt can be reduced.

Incidentally, in the present invention, a steel cord can be suitably used as a constituent material of the longitudinal reinforcing layer for reinforcing the belt in the longitudinal direction. Of course, it is possible to use other various materials, for example, wires such as polyester and polyamide, and other materials and forms having sufficient strength to withstand the tension applied in the longitudinal direction of the belt.

The rigid plate used in the present invention has a very high rigidity in shape as compared with a steel cord or the like conventionally used as a constituent material of the lateral rigid layer. The arrangement pitch in the longitudinal direction can be made extremely large as compared with the related art. For example, in the case of a steel cord as a conventional lateral rigid layer constituent material, the thickness is φ
If it is 1.2 mm, it must be finely arranged at a pitch of 2.1 mm. However, when the rigid plate material of the present invention is used as a constituent material of the lateral rigid layer, it is 20 to 150 mm.
Can be arranged at an extremely large pitch.

By doing so, the flexibility of the belt between the rigid plate members can be increased, so that the belt can smoothly pass through the pulley when passing through the pulley. And the rotational movement of the belt is stabilized. Further, since the arrangement pitch of the rigid plate members can be increased, there is an advantage that the manufacturability at the time of belt production is enhanced.

In the present invention, it is desirable to use a flat plate having flat upper and lower surfaces as the rigid plate. Also, when embedding a large number of rigid plate materials inside the belt, it is possible to arrange and embed each rigid plate material alone inside the belt without connecting them in the vertical direction with connecting wires to align the arrangement. (Claim 3).

When arranging and embedding a number of rigid plate members in a predetermined arrangement inside the belt, it is also possible to connect them in advance in the longitudinal direction of the belt with a twisted wire or the like and embed them in that state. By doing so, it is possible to perform the embedding work in a state where the interval between the rigid plate members is accurately maintained at a predetermined interval. However, in such a case, it is necessary to prepare a unit in which a number of rigid plate members are connected by a connecting wire such as a twisted wire in advance, and to connect them during belt manufacturing.

However, when the respective rigid plate members are simply arranged and buried without being connected by a connecting wire,
There is no need to pre-manufacture, cut, or join a unit in the form of connecting a number of rigid plate materials with connecting wires, simplifying the belt manufacturing process and facilitating belt manufacturing. In addition, there is obtained an advantage that belts of various lengths can be manufactured without changing the preparation process.

The rigid plate may be made of a steel material or a resin material (claim 4). When the rigid plate is made of a steel material, its outer surface is prevented from being corroded and its adhesion to the rubber material is enhanced. Therefore, it is desirable to perform various known surface treatments. For example, conversion coating treatment,
Although there are cationic electrodeposition coating, plating and the like, it is preferable to use galvanizing which can secure corrosion resistance and rubber adhesive strength stability in a long-time molding and vulcanization process of a conveyor belt for conveying personnel (claim) Item 5).

Furthermore, a through-hole or a non-penetrating concave portion can be provided in the rigid plate material. In such a case, the anchor effect can be exerted by inserting the rubber material, and the anchor effect can be exhibited. This can increase the physical adhesion between the rigid plate and the rubber material,
The fixing of the rigid plate material during the operation of the belt can be made stable (prevention of shear separation). Adhesive rubber (containing a known cobalt-based or resorcinol-based compounding agent) can be used as the rubber material that comes into contact with the rigid plate material. Alternatively, instead of the adhesive rubber, a vulcanizing adhesive for metal-rubber can be applied to the plate material.

Further, in the present invention, a breaker layer, which suppresses vulcanization shrinkage of the rubber material and mainly acts to restrain the shape of the belt in the width direction, can be embedded in the belt. As the breaker layer, a canvas in which the warp and the weft have almost the same strength and the arrangement density is also about the same can be used. The breaker layer can be provided at the boundary between the upper cover rubber and the lateral rigid layer or at the boundary between the lower cover rubber and the lateral rigid layer. By providing such a breaker layer, peeling (shear peeling) at the adhesive interface between the rigid plate material and the rubber material, uneven shrinkage of the rubber material,
Specifically, uneven contraction of the rubber material occurs between the portion where the rigid plate material is embedded and the portion where the rigid plate material is not embedded, thereby avoiding inconvenience such as disturbing the straightness of the groove on the belt surface due to this. can do.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a conveyor belt (hereinafter simply abbreviated as a belt) for personnel conveyance according to this embodiment. In FIG. 1A, reference numeral 10 denotes a belt. The belt 10 is wound around an endless ring between a head pulley (drive pulley) 12 and a tail pulley (driven pulley) 14 provided at a predetermined distance. A person is placed on the upper surface of the belt and transported on the upper transport side 10a. 10b indicates a return side.

In FIG. 1, reference numerals 16 denote support rollers on the transport side 10a which support both ends in the width direction of the belt 10 from below on the transport side 10a. A plurality of rollers 16 are provided at predetermined intervals in the longitudinal direction of the belt.

FIG. 2 specifically shows a cross-sectional configuration of the belt 10 of this embodiment. As shown in FIG.
No. 0 has an upper cover rubber 22 constituting a belt front surface portion, a lower cover rubber 24 constituting a belt back surface portion, and an intermediate rubber layer 26 therebetween.

Reference numeral 28 denotes longitudinal reinforcing steel cords which extend in the longitudinal direction of the belt 10 and are arranged at a predetermined pitch in the width direction and are embedded in the intermediate rubber layer 26. A longitudinal reinforcing layer for reinforcing in the longitudinal direction is formed.

A number of ridges 32 running in the longitudinal direction are provided on the upper cover rubber 22 in parallel with each other and at a predetermined pitch in the width direction of the belt 10, and a groove 34 is provided between the ridges 32. Are formed.

In this embodiment, between the upper cover rubber 22 and the intermediate rubber layer 26 and between the lower cover rubber 24 and the intermediate rubber layer 26
Rigid plate members 30 extending in the width direction of the belt 10 are arranged at a predetermined pitch P in the longitudinal direction and are buried in a portion between the positions. A lateral rigid layer is constituted by the large number of rigid plate members 30.

In the present embodiment, the lateral rigid layers are formed at two locations above and below. The lateral rigidity layer is for imparting lateral rigidity to the belt 10, and here, a flat plate-shaped steel material having a flat surface is used as the rigid plate material 30. The rigid plate 30 is made of S45C and has a transverse elastic modulus of 19
0 kN / mm ² , and the outer surface is galvanized. However, this is only an example. Here, the rigid plate 30 is
The belts are arranged at a pitch P in the longitudinal direction of the belt 10 such that the thickness direction thereof is oriented in the belt thickness direction.

The rigid plate 30 used here has a width B of 12 mm and a thickness A of 6 mm shown in FIG. 3, and the pitch P of the belt 10 in the longitudinal direction is 50 mm.
It is buried at regular intervals so that

The vertical reinforcing steel cord 28 has a strength of 630 N / mm and a cord diameter of 2 mm, and is arranged and embedded at a pitch of 4.6 mm in the belt width direction.
In Naozu 2, the total thickness H of the belt 10 is 30 (or 26) mm, the dimension _{H 1} of the protrusion 32 is 6.5mm
It is.

In the present embodiment, a breaker layer 36, which suppresses vulcanization and shrinkage of the rubber material and mainly acts to restrain the shape in the belt width direction, is provided inside the belt 10, specifically, the upper cover rubber 2.
It is buried at the boundary between the second rigid layer and the lateral rigid layer. Here, canvas such as nylon or polyester is used as the breaker layer 36, and in this canvas, the warp and the weft have almost the same strength and the arrangement density is about the same.

However, since the purpose of the canvas here is to suppress the vulcanization and shrinkage of the rubber material and to mainly perform the shape restraining action in the belt width direction (also to prevent the peeling off by shearing),
Its structure is different from that of ordinary reinforcing canvas. For example, a canvas used as a strong material has a high warp and weft strength and a high density, while the canvas used as the breaker layer 36 has a low warp and weft strength and a coarse density. It has become. Table 1 compares them.

[0037]

[Table 1]

In the case of the belt 10 of this embodiment, the lateral rigidity of the belt 10 in the width direction is higher than that of the conventional belt using a steel cord as a constituent material of the lateral rigid layer. Can be suppressed small.

Incidentally, Table 2 shows the measurement results of the amount of deflection at the central portion in the belt width direction when the belt width of the belt 10 is variously changed, in comparison with a belt having a conventional structure. The measurement of the amount of deflection was performed by the method shown in FIG. That is, the belt was supported at a position 50 mm away from both ends in the belt width direction toward the center in the belt width direction, and a load of 750 N was applied to the center to measure the amount of deflection at the center.
Further, as the conventional belt, a steel cord constituting a lateral rigid layer having a diameter of 1.2 mm and arranged at a pitch of 2.1 mm in the longitudinal direction of the belt was used.

[0040]

[Table 2]

As can be seen from the results shown in Table 2, in the case of the belt having the conventional structure, when the belt width exceeds 1100 mm, the amount of deflection becomes larger than 1% of the distance between both fulcrums, but the rigid plate material 30 is used. In the case of the example of the present invention in which the lateral rigid layer is provided above and below, even if the belt width exceeds 1100 mm, the amount of flexure is 1% or less, which is sufficient for use.

When the belt width is more than 1100 mm, the amount of deflection can be suppressed to a small amount which cannot be achieved by the conventional belt as described above, thereby greatly improving the ability to transport personnel. It is possible to do. Further, in this example, since the rigid plate 30 is arranged so that its thickness direction is directed to the belt thickness direction,
The belt thickness can be reduced.

In this example, the rigid plate 30 having a higher rigidity in shape than the steel cord or the like is used, so that the arrangement pitch P can be made large, and as a result, the belt between the rigid plates 30 The flexibility of the belt 10 can be increased, so that the belt 10 can pass through the pulleys 12 and 14 smoothly, and the rotational movement of the belt 10 can be stabilized. Further, since the arrangement pitch P of the rigid plate members 30 can be increased, manufacturability in manufacturing the belt 10 is enhanced.

Further, in this embodiment, since the respective rigid plate members 30 are arranged and buried independently of each other without being connected by a connecting wire, the preparation process is also changed when manufacturing belts 10 of various lengths. An advantage that can be dealt with without any change is obtained.

In this embodiment, the rigid plate 30 is made of steel and the outer surface thereof is galvanized.
Corrosion prevention and adhesion to rubber materials can be enhanced.

Although the embodiments of the present invention have been described in detail, this is only an example. For example, in the present invention, as shown in FIG.
It can be provided only at the point, and the rigid plate material 3
The width dimension, thickness dimension, pitch P, etc. of 0 can be appropriately changed according to belt width, pulley diameter, and other circumstances. In addition, the present invention can be configured in variously modified forms without departing from the gist thereof.

[Brief description of the drawings]

FIG. 1 is a simplified diagram showing a conveyor device including a conveyor belt for transporting personnel according to one embodiment of the present invention.

FIG. 2 is a diagram illustrating a cross-sectional configuration of a conveyor belt for conveying personnel according to the same embodiment.

FIG. 3 is a diagram showing the rigid plate material in FIG. 2 taken out alone.

FIG. 4 is a diagram showing a cross-sectional configuration of a conveyor belt for conveying personnel according to another embodiment of the present invention.

FIG. 5 is an explanatory diagram of a method for measuring the amount of deflection of the conveyor belt for conveying personnel according to the embodiment of the present invention.

FIG. 6 is a view showing a conventional conveyor belt for transporting personnel and a conveyor device including the same.

[Explanation of symbols]

 Reference Signs List 10 Conveyor belt for personnel transfer 10a Conveying side 12 Head pulley (drive pulley) 14 Tail pulley (driven pulley) 22 Upper cover rubber 24 Lower cover rubber 28 Vertical reinforcing steel cord 30 Rigid plate material 36 Breaker layer P pitch

Continuing on the front page (72) Inventor Hiroyuki Nagai 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor Seiji Tanabe 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Stock In-house F-term (reference) 3F024 AA02 CA04 CB03 CB08 CB10 CB13 DA07 DA14 3F321 BA06 CB02 CB08

Claims (6)

[Claims] 1. An upper cover rubber forming a belt front surface portion, a lower cover rubber forming a belt back surface portion,
(B) a longitudinal reinforcing layer embedded in the belt to provide reinforcement in the longitudinal direction; and (c) a lateral rigid layer embedded in the belt to provide rigidity in the width direction. In a personnel conveyor belt that is wound around and transports a person on the upper surface of the belt on the transport side, a rigid plate having a flat cross section extending in the width direction of the belt is used as a component of the lateral rigid layer, and the rigid plate is used as the material. A conveyor belt for transporting personnel, wherein the lateral rigid layer is formed by arranging the lateral rigid layers at a predetermined pitch in the longitudinal direction of the belt so that the thickness direction thereof is oriented in the belt thickness direction. 2. The conveyor belt according to claim 1, wherein said conveyor belt has a wide width exceeding 1100 mm. 3. The belt according to claim 1, wherein the rigid plate members are individually arranged and embedded in the belt without being vertically connected by a connecting wire for aligning the rigid plate members. A conveyor belt for transporting personnel. 4. The conveyor belt according to claim 1, wherein the rigid plate is made of a steel material or a resin material. 5. The conveyor belt according to claim 4, wherein the rigid plate is made of steel, and an outer surface of the conveyor is galvanized. 6. The method according to claim 1, wherein a breaker layer that suppresses vulcanization and shrinkage of the rubber material and mainly functions to restrain the shape of the belt in the width direction is embedded therein. Conveyor belt for personnel transport.