Steel belt winding structure on elevator

Abstract

The invention provides a steel belt winding structure on an elevator, which comprises a main machine rotating shaft and a wheel disc, the wheel disc is fixedly connected with the main machine rotating shaft, the outer side of the wheel disc is a winding part for winding a steel belt, the winding part is a vortex-shaped curved surface, and the screw pitch of the vortex-shaped curved surface is equal to the thickness of the steel belt. By arranging the winding part with the vortex-shaped curved surface, sudden change of the winding radius of the steel belt is avoided, so that elevator operation shaking caused by sudden winding change is avoided, and the stability and comfort of elevator operation are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the elevator technical field, especially to a steel belt winding structure on an elevator. BACKGROUND

[0002] The elevator mainly realizes vertical transportation through a main machine driving system, the main machine driving system drives a car to move up and down through a steel belt or a steel wire rope, and some low-noise low-rise residential elevators or commercial spaces generally use a steel belt as a suspension device.

[0003] At present, one end of the steel belt is generally wound on a main machine rotating shaft, and the other end is connected with the car. The outer diameter of the main machine rotating shaft is small, which limits the bending radius range of the used steel belt, thereby limiting the type of the steel belt; in addition, the main machine rotating shaft is a standard circle, and the position or structure for fixing the end of the steel belt has a sudden change, as shown in the drawing, when the steel belt is wound thereon, some unsmooth transitions will be generated due to the sudden change of the radius, and after the elevator runs, the unsmooth transitions will cause corresponding shaking of the elevator in the running process, thereby affecting the stability of the elevator. Figure 1 SUMMARY

[0004] The present application aims to provide a steel belt winding structure on an elevator to overcome the deficiencies in the prior art.

[0005] To solve the above technical problems, the technical scheme of the present application is as follows: a steel belt winding structure on an elevator, comprising a main machine rotating shaft and a wheel disc, the wheel disc is fixedly connected with the main machine rotating shaft, the outer side of the wheel disc is a winding part for winding the steel belt, the winding part is a vortex line curved surface, and the pitch of the vortex line curved surface is equal to the thickness of the steel belt.

[0006] Further, the steel belt winding structure on the elevator, the wheel disc is fixedly connected with the main machine rotating shaft through a key.

[0007] Further, the steel belt winding structure on the elevator, the wheel disc comprises a wheel disc main body and a pressing plate, the wheel disc main body is externally provided with a flat mouth, the pressing plate is inlaid at the flat mouth and detachably connected with the wheel disc main body, and the outer side of the pressing plate and the outer side of the wheel disc main body are both curved surfaces, which constitute the winding part.

[0008] Further, the steel belt winding structure on the elevator, a pressing groove is arranged between the pressing plate and the flat mouth on the outer side of the wheel disc main body, one end of the steel belt is arranged in the pressing groove and fixedly connected with the wheel disc through the pressing plate.

[0009] Further, the steel belt winding structure on the elevator, the connection between the flat mouth and the winding part on one side is a starting winding position of the steel belt on the winding part, and a round corner connected with the arc transition of the winding part is arranged at the starting winding position.

[0010] ​Further, the above-mentioned steel belt winding structure of the elevator, the radius of the round corner is greater than the minimum bending radius of the steel belt.

[0011] Further, the above-mentioned steel belt winding structure of the elevator, the two side of the wheel disc is provided with two opposite arranged baffle, the two baffle protrude winding part, constitute the limiting space of winding steel belt.

[0012] Further, the above-mentioned steel belt winding structure of the elevator, the two side of the wheel disc is provided with two opposite arranged baffle, the two baffle protrude winding part, constitute the limiting space of winding steel belt.

[0013] Further, the above-mentioned steel belt winding structure of the elevator, the two side of the wheel disc is provided with two opposite arranged baffle, the two baffle protrude winding part, constitute the limiting space of winding steel belt.

[0014] Further, the above-mentioned steel belt winding structure of the elevator, the two side of the wheel disc is provided with two opposite arranged baffle, the two baffle protrude winding part, constitute the limiting space of winding steel belt.

[0015] Compared with the prior art, the beneficial effects of the present application are: the present application avoids the sudden change of the winding radius of the steel belt by setting the vortex line curved winding part, thereby avoiding the elevator running jitter caused by the sudden change of winding, and improving the stability and comfort of the elevator running. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0017] Figure 1 is a winding schematic diagram of the prior art; Figure 2 is a structure schematic diagram of the steel belt winding structure of the elevator of the present application; Figure 3 is an explosion schematic diagram of the steel belt winding structure of the elevator of the present application; Figure 4 is a wheel disc cross-section structure schematic diagram of the steel belt winding structure of the elevator of the present application; Figure 5 is a wheel disc winding structure schematic diagram of the steel belt winding structure of the elevator of the present application; 1, main shaft; 2. Wheel disc; 21. Winding portion; 22. Wheel disc body; 221. Flat opening; 222. Rounded corner; 23. Press plate; 24. Baffle; 241. U-shaped pressing groove; 25. Press-fitting groove; 3. Steel belt. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example 1 like Figures 2-5 As shown, a steel belt winding structure on an elevator includes a main engine shaft 1 and a wheel 2. The wheel 2 is fixedly connected to the main engine shaft 1. The outer side of the wheel 2 is a winding portion 21 for winding the steel belt 3. The winding portion 21 is a spiral line surface, and the pitch of the spiral line surface is equal to the thickness of the steel belt 3.

[0020] A vortex line is a curve that unfolds in a vortex shape within a plane. It usually rotates around a center point and gradually moves away from the center point as the rotation angle increases. The vortex line shows a tendency to gradually spread out in shape. The distance of any point on it from the center point is: r=r0+(P / 360)*θ, Among them, such as Figure 4 As shown, r0 is the distance between the starting point and the center point, P is the pitch, θ is the cumulative rotation angle, and the pitch P is equal to the thickness of the steel strip. Figure 4 The dotted dashed line in the middle represents a circle with a radius of r0. As the rotation angle increases, the spiral surface of the winding gradually moves away from the center point, and the distance from the circle with a radius of r0 gradually increases. In this embodiment, the steel strip is 3mm, that is, P = 3mm. When the steel strip returns to the starting point after one circle, its radius r = r0 + P, that is, the value of r is exactly 3mm larger than the first layer of steel strip. At this time, continuing to wind the second circle of steel strip will not cause any sudden changes in the radius value. Regardless of the number of layers, the radius of all steel strip windings follows the above formula and changes linearly and gradually, without sudden changes. This avoids jitter during elevator operation and ensures stable elevator operation.

[0021] In the above structure, if Figures 2-3 As shown, the wheel 2 is fixedly connected to the main shaft 1 by a key, which makes installation simple and convenient, but is not limited to this, and can also be connected by pins, fasteners, etc.

[0022] Among them, such as Figures 2-4As shown, the roulette wheel 2 includes a roulette wheel body 22 and a pressure plate 23. A flat opening 221 is provided on the outside of the roulette wheel body 22. The pressure plate 23 is embedded in the flat opening 221 and is detachably connected to the roulette wheel body 22. The outer sides of the pressure plate 23 and the outer sides of the roulette wheel body 22 are both curved surfaces, forming a winding portion 21.

[0023] A press-fitting groove 25 is provided between the pressing plate 23 and the flat opening 221 outside the wheel disc body 22 . One end of the steel belt 3 is disposed in the press-fitting groove 25 and is fixedly connected to the wheel disc 2 by press-fitting with the pressing plate 23 .

[0024] like Figures 2-3 As shown, in order to prevent the steel belt from deviating during the lifting and lowering of the car, two baffles 24 are arranged opposite to each other on both sides of the wheel disc 2. The two baffles 24 protrude from the winding part 21 to form a limiting space for the winding steel belt 3, providing guidance and limitation for the winding of the steel belt 3, preventing the steel belt from deviating during operation, and effectively ensuring the stability and smoothness of the winding of the steel belt 3.

[0025] Grooves are provided on both sides of the roulette body 22, and the baffles 24 are annular and sleeved on the outside of the grooves. The baffles 24 are fixedly connected to the roulette body 22 by fasteners passing through the roulette body 22 and the two baffles 24. The installation is simple and convenient, and can ensure the strength and stability of the overall structure of the roulette 2.

[0026] In addition, if Figures 2-3 As shown, a U-shaped pressing groove 241 is provided on the inner side of the baffle 24, opposite to the flat opening 221. The bottom of the U-shaped pressing groove 241 is an arc-shaped shape that matches the outer curved surface of the pressing plate 23. The two ends of the pressing plate 23 extend into the U-shaped pressing grooves 241 of the two baffles 24. The provision of the U-shaped pressing grooves 241 can improve the pressing strength of the pressing plate 23 on the steel belt 3, ensuring the stable connection between the steel belt 3 and the wheel disc 2.

[0027] In addition, if Figures 3-5 As shown, a rounded corner 222 is provided on one side of the flat opening 221. The rounded corner 222 transitions to the arc of the winding portion 21. The connection between the rounded corner 222 and the winding portion 21 marks the starting point for the steel strip 3 to be wound around the winding portion 21. The radius of the rounded corner 222 is greater than the minimum bending radius of the steel strip 3. When the steel strip 3 is wound on the wheel disc 2, the outer diameter of the winding is increased compared to when it is directly wound on the main shaft. In this embodiment, the ratio of the outer diameter of the wheel disc 2 to the outer diameter of the main shaft 1 is greater than 2:1, that is, the outer diameter of the wheel disc 2 is greater than twice the outer diameter of the main shaft 1. The increased outer diameter reduces the restrictions on the bending radius of the steel strip, expanding the range of its use. Furthermore, the increased outer diameter allows the radius of the rounded corner 222 at the starting point of the winding on the wheel disc 2 to be correspondingly increased, making the arc radius greater than the minimum bending radius of the steel strip. This prevents steel strip bulging caused by a large bending angle during the initial winding, thereby improving the stability and comfort of elevator operation.

[0028] Example 2 Based on the structure of the embodiment 1, the winding part 21 of the wheel disc 2 is processed by wire cutting, and the specific processing method comprises the following steps: S1, wire cutting processing the spiral line curved surface of the winding part 21; S2, wire cutting processing the pressing groove 25, and cutting the wheel disc 2 into the wheel disc body 22 and the pressing plate 23. Since the curved surface part cannot be processed by turning, it needs to be processed by four-axis or five-axis linkage CNC, which has great processing difficulty and high processing cost; compared with the four-axis or five-axis linkage CNC processing method, the wire cutting processing greatly reduces the processing difficulty, reduces the processing cost, improves the process feasibility, and is conducive to the implementation and application.

[0029] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the application can be implemented in other particular forms without departing from the spirit or essential characteristics of the application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being defined by the appended claims rather than by the above description, and it is therefore intended that all changes and modifications that come within the meaning and range of equivalency of the claims are resolvable thereunder. Any reference signs in the claims should not be construed as limiting the claims concerned.

[0030] Furthermore, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A steel belt winding structure for an elevator, characterized by: The machine comprises a main engine shaft and a wheel disc, wherein the wheel disc is fixedly connected to the main engine shaft, the outer side of the wheel disc is a winding portion for winding a steel belt, the winding portion is a spiral curved surface, and the pitch of the spiral curved surface is equal to the thickness of the steel belt.

2. The steel belt winding structure for an elevator according to claim 1, characterized in that: The wheel is fixedly connected to the main engine shaft via a key.

3. The steel belt winding structure for an elevator according to claim 1, characterized in that: The wheel disc includes a wheel disc body and a pressure plate. A flat opening is provided on the outside of the wheel disc body. The pressure plate is embedded in the flat opening and is detachably connected to the wheel disc body. The outer sides of the pressure plate and the outer sides of the wheel disc body are both curved surfaces, forming a winding portion.

4. The steel belt winding structure for an elevator according to claim 3, characterized in that: A press-fitting groove is provided between the pressure plate and the flat opening outside the wheel disc body. One end portion of the steel belt is provided in the press-fitting groove and is fixedly connected to the wheel disc by press-fitting with the pressure plate.

5. The steel belt winding structure for an elevator according to claim 3, characterized in that: The connection between one side of the flat opening and the winding portion is the starting winding position of the steel strip on the winding portion, and the starting winding position is provided with a rounded corner that transitions to the arc of the winding portion.

6. The steel belt winding structure for an elevator according to claim 5, characterized in that: The radius of the fillet is greater than the minimum bending radius of the steel strip.

7. The steel belt winding structure for an elevator according to claim 3, characterized in that: Two baffles are arranged opposite to each other on both sides of the wheel disc, and the two baffles protrude from the winding part to form a limiting space for the winding steel strip.

8. The steel belt winding structure for an elevator according to claim 7, characterized in that: Grooves are provided on both sides of the wheel disc body. The baffle is annular and sleeved outside the groove. The baffle is fixedly connected to the wheel disc body by fasteners passing through the wheel disc body and the two baffles.

9. The steel belt winding structure for an elevator according to claim 7, characterized in that: The inner side of the baffle is provided with a U-shaped pressing groove arranged opposite to the flat opening, the bottom of the U-shaped pressing groove is an arc shape adapted to the outer curved surface of the pressing plate, and the two ends of the pressing plate extend into the U-shaped pressing grooves of the two baffles.

10. The steel belt winding structure for an elevator according to claim 1, characterized in that: The winding portion of the wheel disc is formed by wire cutting.

Images