Elevator traction belt

Abstract

The present application relates to an elevator traction belt, comprising a carrier group located in the center, a covering body provided to cover the carrier group, and at least two groups of isolation layers, wherein the two groups of isolation layers are arranged on both sides of the carrier group along the thickness direction of the elevator traction belt; along the thickness direction of the elevator traction belt, the covering body on the same side of the carrier group is divided into two layers, and the isolation layer is provided between the two layers; one of the two layers of covering body closer to the carrier group has a higher hardness. Compared with the prior art, the isolation layer of this solution can disperse the surface stress of the elevator traction belt and avoid the stress on the surface of the elevator traction belt being transferred to the inner layer of the elevator traction belt; when the surface layer of the elevator traction belt is damaged, the isolation layer can also prevent the cracks on the surface of the elevator traction belt from extending into the elevator traction belt, thereby increasing the wear resistance of the elevator traction belt and improving the service life of the elevator traction belt.

Description

Technical Field

[0001] The present application relates to the technical field of traction belts, and in particular to an elevator traction belt. Background Art

[0002] With the advancement of elevator technology, more and more elevators use traction belts and traction wheels for power transmission. The traction belts are in the form of flat steel belts, multi-V belts, etc., which are generally composed of a bearing body in the middle of the traction belt cross-section and a covering body wrapped around the outside of the bearing body.

[0003] Because the sheath is in constant contact with the traction sheave, the traction belt wears during operation. This is especially true when foreign matter (such as sand) enters the gap between the belt and the traction sheave, causing the belt to crush the foreign matter, further abrading the belt. When the traction belt wears sufficiently, especially when it reaches the carrier, direct contact between the carrier and the traction sheave occurs, accelerating wear until the carrier breaks, posing a safety risk. Summary of the Invention

[0004] Based on this, it is necessary to address the above technical issues and provide an elevator traction belt.

[0005] An elevator traction belt, comprising a centrally located supporting body group, a covering body covering the supporting body group, and at least two groups of isolation layers, the two groups of isolation layers being arranged on both sides of the supporting body group along the thickness direction of the elevator traction belt;

[0006] Along the thickness direction of the elevator traction belt, the covering body on the same side of the supporting body group is divided into two layers, and the isolation layer is arranged between the two layers. The one of the two covering bodies closer to the supporting body group has higher hardness.

[0007] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution. They are merely further supplements or optimizations. Under the premise that there are no technical or logical contradictions, each optional method can be combined separately for the above-mentioned overall solution, or multiple optional methods can be combined.

[0008] Optionally, the one of the two layers of coating that is away from the carrier group is a first coating layer, and the one close to the carrier group is a second coating layer, and the second coating layer covers the carrier group;

[0009] The hardness of the second coating layer is at least 2 SHA higher than the hardness of the first coating layer.

[0010] Optionally, along the thickness direction of the elevator traction belt, the thickness of the first coating layer is D1, the total thickness of the second coating layer and the isolation layer is D2, and D1:D2=2~6 is satisfied.

[0011] Optionally, the second cladding layer is a light-transmitting layer, and the first cladding layer is a light-impermeable layer.

[0012] Optionally, the isolation layer is in a mesh shape, and an extension direction of the isolation layer is parallel to the outer surface of the elevator traction belt.

[0013] Optionally, the isolation layer has a plurality of meshes, and a portion of the structure of the first cladding layer or the second cladding layer fills each mesh.

[0014] Optionally, the pore area of ​​each mesh of the isolation layer is 0.15 mm2 to 0.3 mm 2 .

[0015] Optionally, the isolation layer is a fiber layer.

[0016] Optionally, along the thickness direction of the elevator traction belt, the thickness of the isolation layer is 0.04 mm to 0.1 mm.

[0017] Optionally, along the width direction of the elevator traction belt, the carrier group includes a plurality of carriers arranged in sequence, and the second coating layer fills and coats the outer periphery of each carrier.

[0018] The isolation layer of the elevator traction belt of the escalator of the present application can disperse the stress on the elevator traction belt surface, preventing the stress on the elevator traction belt surface from being transferred to the inner layer of the elevator traction belt. At the same time, if the elevator traction belt surface is damaged, the isolation layer can also prevent the cracks on the elevator traction belt from extending into the elevator traction belt, thereby increasing the wear resistance of the elevator traction belt and extending the life of the elevator traction belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of an elevator traction belt according to an embodiment of the present application;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the middle isolation layer.

[0021] The reference numerals in the figures are described as follows:

[0022] 100. Elevator traction belt; 10. Coating; 11. First coating layer; 12. Second coating layer; 20. Supporting body group; 21. Supporting body; 30. Isolation layer; 31. Mesh. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0024] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be an intermediate component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be an intermediate component.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] like Figure 1 As shown, an elevator traction belt 100 is provided, comprising a carrier group 20 located in the center, a covering body 10 provided to cover the carrier group 20, and at least two groups of isolation layers 30, the two groups of isolation layers 30 being arranged on both sides of the carrier group 20 along the thickness direction of the elevator traction belt 100;

[0027] Along the thickness direction of the elevator traction belt 100 , the covering body 10 on the same side of the supporting body group 20 is divided into two layers, and an isolation layer 30 is provided between the two layers.

[0028] When a portion of the elevator belt 100 is wound around a traction sheave (not shown), the portion of the two sheaths 10 farther from the carrier assembly 20 contacts the traction sheave. The isolation layer 30 disperses surface stress on the elevator belt 100, preventing it from being transferred to the inner layers of the belt 100. Furthermore, if damage (such as a notch or crack) occurs on the surface of the elevator belt 100, the isolation layer 30 prevents the damage from extending into the interior of the belt 100, thereby increasing the wear resistance and lifespan of the belt 100.

[0029] The two layers of the covering 10 that are bonded together need to be fused together. Assuming that the hardness of the two layers of the covering 10 is the same, when a layer of the covering 10 that is far away from the carrier group 20 is damaged by a force, although the force is dispersed by the isolation layer 30, it is still possible to cause damage to the layer of the covering 10 that is close to the carrier group 20, thereby affecting the carrier 20.

[0030] When a layer of the covering body 10 away from the supporting body group 20 is damaged by a force, the force is dispersed by the isolation layer 30. Since the one of the two layers of covering bodies 10 closer to the supporting body group 20 has a higher hardness, it is not enough to cause damage to the layer of covering body 10 closer to the supporting body group 20, thereby reducing the impact of the surface stress of the elevator traction belt 100 on the inner layer of the elevator traction belt 100.

[0031] It can be seen from the cross-section of the elevator traction belt 100 that the longer side is the width of the elevator traction belt 100, and the shorter side is the thickness of the elevator traction belt 100. When in use, a portion of the elevator traction belt 100 is wound around the traction sheave, and its thickness can also be understood as the size of this portion in the radial direction of the traction sheave.

[0032] In this embodiment, the one of the two layers of coating 10 that is away from the carrier group 20 is the first coating layer 11 , and the one that is close to the carrier group 20 is the second coating layer 12 . The second coating layer 12 covers the carrier group.

[0033] In this embodiment, the hardness of the second coating layer 12 is higher than that of the first coating layer 11 by at least 2SHA.

[0034] Preferably, the hardness of the second coating layer 11 is higher than the hardness of the first coating layer 12 by 5SHA.

[0035] In order to make the structure of the elevator traction belt 100 more reasonable, in this embodiment, along the thickness direction of the elevator traction belt 100, the thickness of the first coating layer 11 is D1, the total thickness of the second coating layer 12 together with the isolation layer 30 is D2, and D1:D2=2~6 is satisfied.

[0036] Preferably, D1:D2=2.

[0037] In order to facilitate observation of the carriers 21 and promptly determine whether the elevator traction belt 100 is scrapped, the second coating layer 11 is a light-transmitting layer and the first coating layer 12 is an opaque layer. Since each carrier group 20 is located within the second coating layer 12, damage to the carrier group 20 can be directly observed from the second coating layer 12 side of the elevator traction belt 100, making it easier to detect safety hazards caused by fractures in the carrier group 20 hidden within the elevator traction belt 100. Alternatively, the wear area ratio of the carrier group 20 can be combined to indicate whether the elevator traction belt 100 is scrapped.

[0038] If the first coating layer 11 is partially worn out, the difference in color or brightness between the worn and intact areas can be observed visually, and the need to replace the elevator traction belt 100 can be determined based on this difference. To enhance the observation effect, the first coating layer 11 can be illuminated with an ordinary light source, such as a flashlight, and light leakage can be observed visually on the second coating layer 12. If light leakage is found in a certain area, it indicates that the area is severely worn.

[0039] In this embodiment, the first coating layer 11 and the second coating layer 12 are both made of polyurethane. As for the light-transmitting and light-opaque materials themselves, existing technologies can be used. For example, the second coating layer 12 is made of polyurethane with high light transmittance, while the first coating layer 11 is made of polyurethane with good wear resistance.

[0040] In this embodiment, the isolation layer 30 is in a mesh shape. To enhance the fusion of the isolation layer 30 with the first cladding layer 11 or the second cladding layer 12 , in one embodiment, the isolation layer 30 has a plurality of meshes 31 , each of which is partially filled with the structure of the first cladding layer 11 or the second cladding layer 12 .

[0041] In this embodiment, the insulating layer 30 extends parallel to the outer surface of the elevator traction belt 100. When the force acting on the surface of the elevator traction belt 100 is transmitted to the insulating layer 30, the insulating layer 30 can evenly spread the stress, thereby reducing the impact on the inner layer of the elevator traction belt 100.

[0042] The surfaces of the elevator traction belt 100 are parallel along the thickness direction of the elevator traction belt, and the two isolation layers 30 are arranged in parallel. When the elevator traction belt 100 is flattened, the interface between the first coating layer 11 and the second coating layer 12 is a plane and extends along the length of the elevator traction belt 100.

[0043] Regarding the specific form of the mesh holes 31 on the isolation layer 30, referring to one embodiment, the hole area of ​​each mesh hole 31 of the isolation layer 30 is 0.15mm 2 ~0.3mm 2 If the hole area of ​​the mesh 31 is too large, it will affect the function of the isolation layer 30 in dispersing the surface stress of the elevator traction belt 100; if the hole area of ​​the mesh 31 is too small, it will affect the connection between the first covering layer 11 and the second covering layer 12.

[0044] Preferably, the hole area of ​​each mesh 31 is 0.25 mm 2 .

[0045] In this embodiment, the thickness of the isolation layer 30 is 0.04 mm to 0.1 mm along the thickness direction of the elevator traction belt 100. If the thickness of the isolation layer 30 is too small, the isolation layer 30 may not completely disperse the stress on the surface of the elevator traction belt 100. If the thickness of the isolation layer 30 is too large, the thickness of the elevator traction belt 100 will increase, and the cost of the elevator traction belt 100 will increase.

[0046] Preferably, along the thickness direction of the elevator traction belt 100 , the thickness of the isolation layer 30 is 0.08 mm.

[0047] In this embodiment, the isolation layer 30 is a fiber layer. Of course, in other embodiments, the isolation layer 30 may also be a carbon fiber layer.

[0048] Regarding the arrangement of the bearing group and the second covering layer 12 , referring to one embodiment, along the width direction of the elevator traction belt 100 , the bearing group 20 includes a plurality of bearings 21 arranged in sequence, and the second covering layer 12 fills and covers the outer periphery of each bearing 21 .

[0049] The carriers 21 extend along the length of the elevator traction belt 100, and the second coating layer 12 and the coating 10 completely fill the periphery of each group of carriers 21. The carriers 21 are the primary components of the elevator traction belt 100 that bear tensile loads and should be made of a material with high tensile strength. In a preferred embodiment, the carriers 21 may be made of steel cord, carbon fiber tape, or the like, and are located at the center of the elevator traction belt 100. The carriers 21 may take various shapes, such as rope, belt, or chain. In a preferred embodiment, the cross-section of the carriers 21 is circular.

[0050] In order to ensure that the carriers 21 are completely contained in the second covering layer 12 , according to one embodiment, in the cross section of the elevator traction belt 100 , the wrap angle α of the second covering layer 12 to the carrier group 20 is 360 degrees.

[0051] The technical features of the above embodiments may be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there are no conflicts in the combination of these technical features, they should be considered to be within the scope of this specification. When technical features in different embodiments are reflected in the same figure, it can be regarded as that figure also discloses the combination examples of the various embodiments involved.

[0052] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art could make numerous variations and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application.

Claims

1. An elevator traction belt, comprising a centrally located supporting member group, a covering member covering the supporting member group, and at least two sets of insulating layers, the two sets of insulating layers being arranged on both sides of the supporting member group along the thickness direction of the elevator traction belt; It is characterized in that Along the thickness direction of the elevator traction belt, the covering body on the same side of the supporting body group is divided into two layers, and the isolation layer is provided between the two layers. Of the two covering layers, the one closer to the supporting body group has a higher hardness. The material of the carrier group is steel cord or carbon fiber tape; the covering layer is polyurethane; and the isolation layer is a carbon fiber layer. The one of the two layers of coating that is far away from the carrier group is a first coating layer, and the one close to the carrier group is a second coating layer, and the second coating layer covers the carrier group; The hardness of the second coating layer is at least 2SHA higher than the hardness of the first coating layer; The isolation layer is in a mesh shape and has a plurality of mesh holes. Part of the structure of the first covering layer or the second covering layer fills each mesh hole. The thickness of the isolation layer along the thickness direction of the elevator traction belt is 0.04 mm to 0.1 mm.

2. The elevator traction belt according to claim 1, characterized in that: Along the thickness direction of the elevator traction belt, the thickness of the first coating layer is D1, the total thickness of the second coating layer and the isolation layer is D2, and D1:D2=2~6 is satisfied.

3. The elevator traction belt according to claim 1, characterized in that: The second cladding layer is a light-transmitting layer, and the first cladding layer is a light-impermeable layer.

4. The elevator traction belt according to claim 1, characterized in that: The extending direction of the isolation layer is parallel to the outer surface of the elevator traction belt.

5. The elevator traction belt according to claim 1, characterized in that: The pore area of ​​each mesh of the isolation layer is 0.15 mm2~0.3 mm 2 .

6. The elevator traction belt according to claim 1, characterized in that: Along the width direction of the elevator traction belt, the carrier group includes a plurality of carriers arranged in sequence, and the second coating layer fills and coats the outer periphery of each carrier.

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