Anti-deformation nylon rope wheel structure supported by round hole plate

Abstract

The utility model discloses an anti-deformation nylon rope wheel structure supported by a round hole plate. The anti-deformation nylon rope wheel structure comprises three layers of round hole supporting structures, the three-layer round hole supporting plate structure comprises a middle layer round hole supporting plate and side face round hole supporting plates located on the two sides of the middle layer round hole supporting plate. Holes with the same size are evenly distributed in the round hole supporting plate. The rope wheel with the nylon rope wheel structure supported by the three layers of round hole plates is lighter than a traditional cast iron rope wheel, meanwhile, the rib plates are replaced by the round hole plates, and the two layers of round hole plates on the periphery are additionally arranged for supporting, so that deformation of the rope wheel under high-strength work can be effectively reduced, and the service life of the rope wheel can be greatly prolonged; and the safety accident that the rope slides down due to the deformation of the rope wheel is reduced.

Description

Technical Field

[0001] The utility model relates to an elevator traction system, in particular to an anti-deformation nylon rope wheel structure supported by a circular hole plate. Background Art

[0002] As the population continues to rise, while keeping the land use area constant, increasing the height of buildings is the most powerful means to solve the housing shortage. This approach has not only brought development opportunities to the elevator industry, but also brought challenges. The surge in the number of elevators has led to an increase in the accident rate of elevators. The traction system is the core component of the elevator, responsible for transmitting power and driving the car up and down. In this system, the sheave plays an important role, which enables the car and counterweight to operate and suspend safely through the traction wire rope. The design of the sheave is crucial to the safety of the elevator, especially in normal operation. The nylon sheave will exert great pressure on the nylon wheel because of direct high-speed contact with the wheel belt, causing the nylon wheel to deform or even damage. If the pulley cannot be properly matched with the wheel groove, it may fall off, causing elevator safety accidents. Therefore, optimizing the design of the sheave structure is crucial to ensure the safe operation of the elevator. Utility Model Content

[0003] The utility model aims to provide a rope pulley structure with improved stability and strength.

[0004] In order to solve the above technical problems, the utility model provides a deformation-resistant nylon rope pulley structure supported by a circular hole plate, comprising: a three-layer circular hole support structure;

[0005] The three-layer circular hole support plate structure comprises a middle layer circular hole support plate and two layers of circular hole support plates located on both sides of the middle layer circular hole support plate; holes of the same size are evenly distributed on the circular hole support plate.

[0006] In a preferred embodiment, the diameter of the hole is 16 mm.

[0007] In a preferred embodiment, the distance between the centers of two adjacent holes is 30 mm;

[0008] In a preferred embodiment, the thickness of the middle layer circular hole support plate is 16 mm.

[0009] In a preferred embodiment, the thickness of the side circular hole support plate is 12 mm.

[0010] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0011] The utility model provides an anti-deformation nylon rope pulley structure supported by a circular hole plate. The anti-deformation nylon rope pulley structure supported by the circular hole plate has better anti-deformation performance, and prevents the deformation of the outer periphery of the rope pulley caused by the failure to take care of the stress of the outer rope groove due to only a middle layer of ribs supporting the rope pulley, resulting in rope shedding and causing serious elevator safety accidents; and the circular hole support plate structure is selected to better save materials and manufacturing costs while considering the best material strength and rigidity, so the nylon rope pulley of this structure can have better anti-deformation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the position of the circular hole plate of the anti-deformation nylon rope pulley structure supported by the circular hole plate in the embodiment of the utility model;

[0013] Figure 2 This is an overall structural diagram of the anti-deformation nylon rope pulley structure supported by a circular hole plate according to an embodiment of the utility model;

[0014] Figure 3 It is a comparison of the stress cloud diagram of the anti-deformation nylon rope pulley structure supported by the circular hole plate in the embodiment of the utility model and the original model;

[0015] Figure 4 It is a comparison of the total deformation cloud diagram of the anti-deformation nylon rope pulley structure supported by the circular hole plate in the embodiment of the utility model and the original model. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the accompanying drawings; 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.

[0017] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "sleeved / 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.

[0018] refer to Figure 1-4This embodiment provides a deformation-resistant nylon pulley structure supported by a circular hole plate, including: a three-layer circular hole support structure; the three-layer circular hole support plate structure includes a middle layer circular hole support plate 1 and two layers of side circular hole support plates 2 located on both sides of the middle layer circular hole support plate 1; holes of uniform size are evenly distributed on the circular hole support plate.

[0019] The above-mentioned sheave structure has two more layers of circular hole support plates on both sides of the sheave axis, so that the rope groove under stress on the outer side of the sheave can be better supported, making the overall anti-deformation ability of the anti-sheave structure stronger. In order to save materials, while adding support plates on both sides and replacing the middle rib plate, holes are reasonably and evenly distributed on the support at night, so as to save materials, reduce the weight of the sheave and do not add unnecessary load to the entire elevator system. The diameters of the circular holes are controlled to be 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, etc., and research is carried out to find the optimal circular hole diameter; the thickness of the central circular hole support structure is 16mm; the thickness of the circular hole support plates on both sides is 12mm.

[0020] 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 / ℃;

[0021] Import the created sheave structure model 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 adopts C3D4 tetrahedron, and the mesh facility of the overall model is 4.5mm. Set the working environment temperature of the entire sheave structure 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 the bottom of the sheave structure as a sine distribution, and apply a bearing load to the upper half of the position where the bearing contacts the anti-sheave hole; finally, apply displacement constraints to the bayonet positions at both ends of the middle axis to limit the displacement of the entire sheave in the xyz axis direction.

[0022] By comparing the total deformation effects under the same working conditions and paying attention to the peak index of the total deformation, it can be found that the deformation resistance is best when the circular hole diameter is 16mm, the maximum deformation of the overall structure is 0.4529mm, and the maximum stress is 5.7633MPa.

[0023] The above description is only a preferred specific implementation method of the utility model, and does not limit the patent scope of the utility model. Any technical equivalent changes made using the contents of the utility model specification are within the protection scope of the utility model.

Claims

1. A deformation-resistant nylon sheave structure supported by a circular hole plate, characterized in that include: Three-layer circular hole support structure; The three-layer circular hole support plate structure comprises a middle layer circular hole support plate and side circular hole support plates located on both sides of the middle layer circular hole support plate; holes of the same size are evenly distributed on the circular hole support plate.

2. A deformation-resistant nylon rope pulley structure supported by a circular hole plate as claimed in claim 1, characterized in that: The diameter of the hole is 16 mm.

3. The anti-deformation nylon rope pulley structure supported by a circular hole plate as claimed in claim 1, characterized in that: The distance between the centers of two adjacent holes is 30 mm.

4. The anti-deformation nylon rope pulley structure supported by a circular hole plate as claimed in claim 1, characterized in that: The thickness of the middle layer circular hole support plate is 16 mm.

5. The anti-deformation nylon rope pulley structure supported by a circular hole plate as claimed in claim 1, characterized in that: The thickness of the side circular hole support plate is 12 mm.

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