CN218369925U

CN218369925U - Dual-mode adhesive tape suitable for small turning

Info

Publication number: CN218369925U
Application number: CN202222994833.7U
Authority: CN
Inventors: 宋朋洋; 秦庆华; 程进明; 徐会敢; 崔利卫; 申建永; 王洋; 赵川
Original assignee: China Railway Engineering Equipment Group Co Ltd CREG
Current assignee: China Railway Engineering Equipment Group Co Ltd CREG
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-01-24
Anticipated expiration: 2032-11-10

Abstract

The utility model discloses a bimodulus sticky tape suitable for tight turning has solved among the prior art problem that the conveyer belt easily takes place to turn on one's side, loss sticky tape under tight turning radius. The utility model discloses a bimodulus sticky tape, including gluing the system baseband, be equipped with two-layer big modulus bearer layer at least in gluing the system baseband, be located and be equipped with little modulus tensile layer between the middle two-layer big modulus bearer layer, the width on little modulus tensile layer accounts for 1/4 of big modulus bearer layer width in 1/2. The utility model discloses a bimodulus sticky tape, in many bends little turn project or the one-way many bends little turn project, the sticky tape atress is more reasonable to the operation is more stable, and the life-span is longer, leaks the risk greatly reduced that the sediment turned over the area, and can adapt to the operating mode of less turning radius and bigger turning angle.

Description

Dual-mode adhesive tape suitable for small turning

Technical Field

The utility model relates to a conveyer belt technical field for the tunnel construction especially indicates a bimodulus sticky tape suitable for miniturn.

Background

In the tunnel construction process, a belt conveyor is needed to convey dregs and the like. When the turning radius of the belt conveyor is small (< 100 m), because the centripetal force is large, and meanwhile, the elastic modulus of the rubber belt cannot meet the length difference of an inner curve and an outer curve, a series of problems of serious deviation, inner side wrinkles, outer side belt turning and the like of the rubber belt can occur, so that the rubber belt is excessively worn, short in service life, serious in slag leakage and the like in the operation process of the conveyor. When turning radius is less than a definite value, will lead to the belt feeder thoroughly to be unable to use.

In recent years, various types of correcting mechanisms suitable for small turning carrier roller frames are proposed, such as a multi-hinged turning carrier roller structure with the publication number of CN217200415U, but the correcting mechanism still performs forced correction by sacrificing the service life of an adhesive tape, cannot solve the stress problem caused by the difference between the inner side curve and the outer side curve of the adhesive tape during small turning, and is not suitable for turning radii below 100 m. Therefore, it is necessary to design a special adhesive tape for tight turning applications.

SUMMERY OF THE UTILITY MODEL

Not enough to in the above-mentioned background art, the utility model provides a bimodulus sticky tape suitable for tight turning has solved among the prior art problem that the conveyer belt easily takes place to turn on one's side, loss sticky tape under tight turning radius.

The technical scheme of the utility model is realized like this: a double-mold adhesive tape suitable for small turns comprises a glue base tape, wherein at least two large-modulus bearing layers are arranged in the glue base tape, a small-modulus tensile layer is arranged between the two large-modulus bearing layers in the middle, and the width of the small-modulus tensile layer accounts for 1/4 to 1/2 of the width of the large-modulus bearing layer.

As a preferred embodiment: the small-modulus tensile layer is positioned in the middle of the middle two large-modulus bearing layers, and the width of the small-modulus tensile layer accounts for 1/3 of that of the large-modulus bearing layers.

As another preferred scheme: the small-modulus tensile layer is positioned on one side of the middle two large-modulus bearing layers, and the width of the small-modulus tensile layer accounts for 1/3 of that of the large-modulus bearing layers.

Preferably, the low-modulus tensile layer is a steel wire rope core layer, and the high-modulus bearing layer is a fabric core layer or an EP core layer or a PVG belt layer. The fabric core layer is one of twill steel wire mesh, aramid fiber, cotton canvas and nylon.

Preferably, the low-modulus tensile layer is an aramid core layer, and the high-modulus bearing layer is a fabric core layer or an EP core layer or a PVG belt layer. The fabric core layer is one of cotton canvas and nylon.

Preferably, the large-modulus bearing layer and the small-modulus tensile layer are embedded in the rubber base band, and the large-modulus bearing layer is arranged in parallel along the thickness direction of the rubber base band. Wherein the glue base band is a polyurethane adhesive tape; the ratio of the width of the large-modulus bearing layer to the width of the rubber base band is (0.8) ~ (1).

The utility model has the advantages that: 1. adopt the utility model discloses a behind the novel bimodulus sticky tape, in many bends little turn project or one-way turn's many bends little turn project (contain spiral one-way turn), can adopt the slag tap of a plurality of bends of a continuous belt feeder completion, need not to carry out the overlap joint of many belt feeders, greatly reduced project cost and shut down installation time, simultaneously, reduced the sticky tape vulcanization operation degree of difficulty and time. 2. The utility model discloses a bimodulus sticky tape, in many bends tight turn project, the sticky tape atress is more reasonable to the operation is more stable, and the life-span is longer, leaks the risk greatly reduced that the sediment turned over the area, and can adapt to the operating mode of littleer turning radius and bigger turning angle, has higher spreading value.

Drawings

In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive work.

Fig. 1 is a schematic structural view of the present invention in embodiment 1.

Fig. 2 is a schematic cross-sectional view of the present invention in example 1.

Fig. 3 is a schematic view of the force state of the straight line segment according to the present invention in embodiment 1.

Fig. 4 is a schematic view of the force state of the present invention at the turning section in embodiment 1.

Fig. 5 is a schematic structural view of the present invention in embodiment 2.

Fig. 6 is a schematic cross-sectional view of the present invention in example 2.

Fig. 7 is a schematic view of the stress state of the present invention at the turning section in embodiment 2.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 and 2, in embodiment 1, a dual-mode adhesive tape suitable for tight turning includes a base tape 1 made of rubber, at least two large-modulus bearing layers 2 are arranged in the base tape 1 made of rubber, and the number of the large-modulus bearing layers is increased or decreased according to the material and the position of the large-modulus bearing layers. And a small-modulus tensile layer 3 is arranged between the two middle large-modulus bearing layers 2. The large-modulus bearing layer 2 and the small-modulus tensile layer 3 are made of materials with different moduli, and the centripetal force can be dispersed in the turning process due to the magnitude difference of the elastic moduli, so that the occurrence of side turning is effectively avoided. In the embodiment, the width of the small-modulus tensile layer 3 accounts for 1/4 to 1/2 of the width of the large-modulus bearing layer 2; the ratio of the width of the large-modulus carrier layer 2 to the width of the rubber base tape 1 is (0.8). As the preferred scheme, glue system baseband 1 and be the polyurethane adhesive tape, the width of big modulus bearing layer 2 and the width ratio of gluing system baseband 1 are 0.8. The large-modulus bearing layers 2 are arranged in parallel along the thickness direction of the rubber base band 1.

When the small-modulus tensile layer 3 is used for S-shaped small turns, the small-modulus tensile layer 3 is positioned in the middle of the large-modulus bearing layer 2 of the two middle layers, and the width of the small-modulus tensile layer 3 accounts for 1/3 of that of the large-modulus bearing layer 2. The elastic modulus of the middle part and the two side parts of the adhesive tape are different in magnitude, the elastic modulus of the middle part is small, the elastic modulus of the two sides is large, so that when the adhesive tape is in turning operation, the tensile force is mainly concentrated in the middle, and the adhesive tapes on the two sides only bear a small part of the tensile force and mainly play a role in bearing. The width of the stress part is shortened, the whole adhesive tape is not paved, so that the adhesive tape is more suitable for turning operation and can be suitable for turning in the left direction and the right direction.

As shown in FIG. 3, when the tape is running in a straight line, the tape is in the middle of the holder, and the tension portion (shaded in the drawing) is located in the middle of the tape. As shown in fig. 4, when the adhesive tape enters the turning section, the whole adhesive tape moves inwards to reach a new balance position due to the action of centripetal force of the adhesive tape, and at the new balance position, the centripetal force applied to the stressed part (shaded part in the figure) of the adhesive tape cannot turn over the outer side of the adhesive tape, so that the stability during turning operation is improved.

In specific implementation, the low-modulus tensile layer 3 is a steel wire rope core layer, and the high-modulus bearing layer 2 is a fabric core layer or an EP core layer or a PVG belt layer. The fabric core layer is made of one of twill steel wire meshes, aramid fibers, cotton canvas and nylon. The material of the fabric core selects different types of materials (aramid fiber, CC, NN, EP, PVG and the like) and the layer number according to the factors such as turning radius, tension and the like, so that most of stress is concentrated on the steel wire rope core part. The length of the steel wire rope core layer is arranged along the length direction of the rubber base band 1, when the large-modulus bearing layer 2 adopts a plurality of layers (more than 3 layers), the plurality of layers of large-modulus bearing layers 2 positioned at the same side of the small-modulus tensile layer 3 are orderly stacked together, and the strength and the bearing capacity of the large-modulus bearing layers are improved.

Or, in specific implementation, the low-modulus tensile layer 3 may also be an aramid core layer, and the high-modulus bearing layer 2 is a fabric core layer, an EP core layer or a PVG belt layer. The fabric core layer is one of cotton canvas and nylon. The middle part adopts an aramid fiber core, the two sides adopt other fabric cores, and the materials of the other fabric cores select different types of materials (CC, NN, EP, PVG and the like) and the layer number according to the factors such as turning radius, tension and the like, so that most of stress is concentrated on the aramid fiber core part.

As shown in fig. 5 and 6, in example 2, a double-mold adhesive tape suitable for tight turning, when used for unidirectional tight turning, the low-modulus tensile layer 3 is positioned on one side of the high-modulus bearing layer 2 of the two middle layers, and the width of the low-modulus tensile layer 3 accounts for 1/3 of the width of the high-modulus bearing layer 2. The adhesive tape is divided into a left part and a right part, wherein the left side is a tensile adhesive tape, and the right side is a bearing adhesive tape; the tensile adhesive tape adopts a low-elongation material (namely a small-modulus tensile layer), and the load-bearing adhesive tape adopts a high-elongation material (namely a large-modulus load-bearing layer). When the tape makes a turn, the tensile tape (low elongation side) is placed on the inside of the turn, and the load-bearing tape (high elongation side) is placed on the outside of the turn.

As shown in fig. 7, when the adhesive tape turns, the elongation of the tape core of the outer adhesive tape is large, and a large elongation can be achieved under a small pulling force, so that the length difference of the inner and outer line curves of the adhesive tape during turning is met, meanwhile, the centripetal force given to the tape turning of the adhesive tape is small due to the small pulling force of the outer side, the tape turning phenomenon on the outer side of the adhesive tape can be prevented by properly adding the blocking roller, the main stress is concentrated on the inner side of the adhesive tape, and the stress of the adhesive tape is more reasonable due to the existence of the carrier roller on the inner side, so that the operation is more stable and reliable.

In specific implementation, the low-modulus tensile layer 3 can also adopt an aramid core layer, and the high-modulus bearing layer 2 is a fabric core layer or an EP core layer or a PVG belt layer. The fabric core layer is one of cotton canvas and nylon. The middle part adopts an aramid fiber core, the two sides adopt other fabric cores, and the materials of the other fabric cores select different types of materials (CC, NN, EP, PVG and the like) and the layer number according to the factors such as turning radius, tension and the like, so that most of stress is concentrated on the aramid fiber core part.

Or, in specific implementation, the small-modulus tensile layer 3 is a steel wire rope core layer, and the large-modulus bearing layer 2 is a fabric core layer, an EP core layer or a PVG belt layer. The fabric core layer is made of one of twill steel wire meshes, aramid fibers, cotton canvas and nylon. The material of the fabric core selects different types of materials (aramid fiber, CC, NN, EP, PVG and the like) and layers according to turning radius, tension and other factors, so that most of stress is concentrated on the steel wire rope core part. The length of the steel wire rope core layer is arranged along the length direction of the rubber base band 1, when the large-modulus bearing layer 2 adopts a plurality of layers (more than 3 layers), the plurality of layers of large-modulus bearing layers 2 positioned at the same side of the small-modulus tensile layer 3 are orderly stacked together, and the strength and the bearing capacity of the large-modulus bearing layers are improved.

The other structure is the same as embodiment 1.

Through adopting the utility model discloses behind the novel bimodulus sticky tape that adopts, in the little turn project, can adopt a continuous belt feeder to accomplish the slagging tap of little bend, need not to carry out the overlap joint of many belt feeders, greatly reduced project cost and shut down installation time (need not to install many sets and store up equipment such as area storehouse, tensioning system), simultaneously, reduced the sticky tape vulcanization operation degree of difficulty and time (need not to carry the sticky tape to vulcanize in the hole).

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-mold adhesive tape suitable for small turns is characterized in that: the rubber base band comprises a rubber base band (1), wherein at least two layers of large-modulus bearing layers (2) are arranged in the rubber base band (1), a small-modulus tensile layer (3) is arranged between the two layers of large-modulus bearing layers (2) in the middle, and the width of the small-modulus tensile layer (3) accounts for 1/4 to 1/2 of the width of the large-modulus bearing layers (2).

2. The dual-mode adhesive tape for tight turns according to claim 1, wherein: the small-modulus tensile layer (3) is positioned in the middle of the two middle large-modulus bearing layers (2), and the width of the small-modulus tensile layer (3) accounts for 1/3 of that of the large-modulus bearing layers (2).

3. The dual-mode adhesive tape for tight turns according to claim 1, wherein: the small-modulus tensile layer (3) is positioned on one side of the middle two layers of the large-modulus bearing layer (2), and the width of the small-modulus tensile layer (3) accounts for 1/3 of the width of the large-modulus bearing layer (2).

4. A dual-mode adhesive tape suitable for tight turns according to any one of claims 1 to 3, wherein: the small-modulus tensile layer (3) is a steel wire rope core layer, and the large-modulus bearing layer (2) is a fabric core layer or an EP core layer or a PVG belt layer.

5. The dual-mode adhesive tape for tight turns according to claim 4, wherein: the fabric core layer is one of twill steel wire mesh, aramid fiber, cotton canvas and nylon.

6. A dual-mode adhesive tape suitable for tight turns according to any one of claims 1 to 3, wherein: the low-modulus tensile layer (3) is an aramid core layer, and the high-modulus bearing layer (2) is a fabric core layer or an EP core layer or a PVG belt layer.

7. The dual-mode adhesive tape for tight turns according to claim 6, wherein: the fabric core layer is one of cotton canvas and nylon.

8. A double-die adhesive tape for tight turns according to claim 1 or 2 or 3 or 5 or 7, characterized in that: big modulus bearing layer (2) and little modulus tensile layer (3) all inlay and establish in gluing system baseband (1), big modulus bearing layer (2) along gluing system baseband (1) thickness direction parallel arrangement.

9. The dual-mode adhesive tape for tight turns according to claim 8, wherein: the glue base band (1) is a polyurethane adhesive band; the ratio of the width of the large-modulus bearing layer (2) to the width of the rubber base band (1) is (0.8).