Anti-deformation trapezoidal rib plate nylon rope wheel structure

Abstract

The utility model provides an anti-deformation trapezoidal rib plate nylon rope wheel structure. The anti-deformation trapezoidal rib plate nylon rope wheel structure comprises a gradient nylon rib plate structure and an integral traction elevator diversion sheave structure. The gradient nylon rib plate structure is arranged between the center shaft position and the rim position of the integral traction elevator diversion sheave structure. The gradient nylon rib plate structure comprises a rib plate, the thickness of the rib plate close to a middle shaft and the thickness of the rib plate close to a wheel flange are increased in a gradient mode, and therefore the cross section of the gradient nylon rib plate structure is in a trapezoid shape. The anti-deformation trapezoidal rib plate nylon rope wheel structure has better anti-deformation performance, and the situation that due to the fact that a nylon rope wheel structure with a single-thickness rib plate cannot better support deformation of the position of the wheel flange, a rope falls off, and serious elevator safety accidents are caused is avoided; and the trapezoidal rib plate structure is selected, so that materials are better saved while the optimal material strength and rigidity are considered, and the manufacturing cost is saved, and therefore, the nylon rope wheel with the structure can have better deformation resistance.

Description

Technical Field

[0001] The utility model relates to a pulley system of an elevator traction system, in particular to a deformation-resistant trapezoidal rib nylon rope pulley structure. Background Art

[0002] With the continuous growth of population, the most effective way to solve the housing problem is to continuously increase the number of floors of buildings under the condition of a certain floor area. The increasing number of floors has brought development opportunities and challenges to the elevator industry. As a populous country, China has a huge market demand for elevators, which makes China a leading elevator manufacturing industry in the world. With the rapid growth of the total number of elevators, the application of new materials and new process technologies for elevators has also increased. The traction system of the elevator is one of the key components. It is responsible for outputting and transmitting power to drive the car up and down. The sheave is an important part of the traction system. Through the sheave, the car and counterweight can be safely operated and suspended through the traction wire rope. The design of the sheave is crucial to the safe operation of the elevator, especially under normal working conditions. The nylon sheave directly works at high speed with the wheel belt, which generates a huge load on the nylon wheel, causing the nylon wheel to deform and damage, and the pulley cannot properly cooperate with the wheel groove, resulting in falling off, which in turn causes elevator safety accidents. Therefore, optimizing the structure of the sheave is of great significance to ensure the safe operation of the elevator. Utility Model Content

[0003] The utility model aims to provide a nylon rope pulley structure capable of resisting deformation, so as to solve the problems raised by the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a deformation-resistant trapezoidal rib nylon rope pulley structure, including a gradient nylon rib structure and an integral traction elevator reverse rope pulley structure;

[0005] The gradient nylon rib structure is arranged between the center axis position and the rim position of the integral traction elevator reverse rope pulley structure; the gradient nylon rib structure includes a rib plate whose thickness increases gradually from the center axis position to the rim position, so that the cross-section of the gradient nylon rib structure is trapezoidal.

[0006] In a preferred embodiment, the thickness of the gradient nylon rib structure at the wheel rim is 98 mm near the wheel rim, and the thickness at the center axis is 40 mm.

[0007] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0008] The utility model provides a nylon rope pulley structure with anti-deformation trapezoidal ribs, which has better anti-deformation performance and prevents the rope from falling off and causing serious elevator safety accidents due to the deformation of the nylon rope pulley structure with single-thickness ribs that cannot better support the position of the wheel rim; and the trapezoidal rib structure is selected to better save materials and manufacturing costs while considering the best material strength and rigidity, so the nylon rope pulley with this structure can have better anti-deformation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is an overall structural diagram of the anti-deformation trapezoidal rib nylon rope pulley structure of the embodiment of the utility model;

[0010] Figure 2 This is a rib diagram of the anti-deformation trapezoidal rib nylon rope pulley structure of the embodiment of the utility model;

[0011] Figure 3 It is a comparison of the stress cloud diagram of the anti-deformation trapezoidal rib nylon rope pulley structure of the embodiment of the utility model and the original model;

[0012] Figure 4 It is a comparison of the total deformation cloud diagram of the anti-deformation trapezoidal rib nylon rope pulley structure of the embodiment of the utility model and the original model. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0014] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0015] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "installed / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0016] refer to Figure 1 and Figure 2 , this embodiment provides a deformation-resistant trapezoidal rib nylon sheave structure, including a gradient nylon rib structure 1 and an integral traction elevator reverse sheave structure 2;

[0017] The gradient nylon rib structure 1 is arranged between the center axis 21 and the rim 22 of the integral traction elevator reverse rope pulley structure 2; the gradient nylon rib structure 1 includes a rib whose thickness increases gradually from the center axis 21 to the rim 22, so that the cross-section of the gradient nylon rib structure 1 is trapezoidal.

[0018] Since the thickness of the ribs in contact with the wheel rim 22 is thickened in this embodiment, the deformation resistance of the overall anti-ropes structure is stronger. In order to save materials, the thickness of the ribs is increased while the thickness of the ribs in contact with the central axis 21 is reasonably reduced, so as to save materials, reduce the weight of the rope pulley and not add unnecessary load to the entire elevator system. The thickness of the trapezoidal ribs is controlled to be: 98mm-40mm; 80mm-40mm; 98mm-30mm, etc.

[0019] The material of the sheave is still MC nylon, which has many advantages such as light weight, high strength, self-lubrication, wear resistance, vibration absorption, noise reduction, etc. The Young's modulus is 1020MPa, the Poisson's ratio is 0.47, and the density is 1.152g / cm 3 , the thermal expansion coefficient is 10.5×10 -5 1 / ℃; the bearing material is bearing steel, with a Young's modulus of 207000MPa, a Poisson's ratio of 0.29, a density of 7.80g / cm3, and a thermal expansion coefficient of 1.25×10 -5 1 / ℃; the shaft material is 45 steel, Young's modulus is 210000MPa, Poisson's ratio is 0.30, density is 7.85g / cm3, thermal expansion coefficient is 1.159×10 -5 1 / ℃;

[0020] Import the created model of a deformation-resistant trapezoidal rib nylon rope pulley structure into Ansys Workbench, fill the above material parameters into the model, and set the same load and constraint conditions as in real life. The mesh uses C3D4 tetrahedron, the mesh facility of the overall model is a 3mm mesh, and the surface in contact with the lattice structure and the lattice structure body use a 1mm mesh to ensure the accuracy of the calculation. Set the working environment temperature of the entire anti-ropes to 25 degrees Celsius; apply a variable function load in the form of a trigonometric function distribution with the maximum at the bottom and the minimum on both sides on both sides of the bottom of the anti-ropes respectively. The sine distribution, the bearing load is applied to the upper half of the position where the bearing contacts the anti-ropes hole; finally, the displacement constraints are applied to the bayonet positions at both ends of the middle axis 21 to limit the displacement of the entire rope pulley in the xyz axis direction.

[0021] Under the same working conditions, different types of lattice filling were carried out, and their total deformation effects were compared. Focusing on the peak index of the total deformation, it was found that the change in trapezoidal rib thickness from 98mm to 40mm had the best deformation resistance, and the maximum deformation of the overall structure was only 0.34437mm, which was 33% lower than the original model.

[0022] The above is only a preferred specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the utility model within the technical scope disclosed by the utility model shall be deemed to infringe the protection scope of the utility model.

Claims

1. A deformation-resistant trapezoidal rib nylon sheave structure, characterized in that: Including gradient nylon rib structure and integral traction elevator anti-ropes structure; The gradient nylon rib structure is arranged between the center axis position and the rim position of the integral traction elevator reverse rope pulley structure; the gradient nylon rib structure includes a rib plate whose thickness increases gradually from the center axis position to the rim position, so that the cross-section of the gradient nylon rib structure is trapezoidal.

2. The anti-deformation trapezoidal rib nylon rope pulley structure according to claim 1, characterized in that: The thickness of the rim portion of the gradient nylon rib structure near the rim is 98 mm, and the thickness near the center axis is 40 mm.

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