A stable elevator main engine power unit

Abstract

This invention provides a stable elevator main unit power device, including a main unit shaft. Multiple winding portions arranged axially along the main unit shaft are provided on the outer side of the shaft. These winding portions are used to wind a steel strip, and are spiral curved surfaces with a pitch equal to the thickness of the steel strip. By using spiral curved winding portions, this invention avoids abrupt changes in the steel strip winding radius, thereby preventing elevator vibration caused by such changes and improving the stability and comfort of elevator operation.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to a stable elevator host power unit. Background Technology

[0002] Elevators primarily achieve vertical transportation through a main drive system, which uses steel belts or wire ropes to move the car up and down. In some low-rise residential elevators or commercial spaces where low noise is required, steel belts are generally used as the suspension device.

[0003] Currently, one end of the steel belt is typically wound around the main shaft, while the other end connects to the car. The main shaft is a standard circular shape, used to fix the position or structure of the steel belt end abruptly, such as... Figure 1 As shown, when the steel strip is wound around it, some non-smooth transitions will occur due to the sudden change in radius. After the elevator is running, these non-smooth transitions will cause the elevator to vibrate during operation, affecting the stability of the elevator. Utility Model Content

[0004] The present invention aims to provide a stable elevator host power unit to overcome the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a stable elevator host power device, including a host shaft, and a plurality of winding portions arranged along the axial direction of the host shaft on the outer side of the host shaft. The winding portions are used to wind steel strips and are spiral curved surfaces. The pitch of the spiral curved surface is equal to the thickness of the steel strip.

[0006] Furthermore, in the aforementioned stable elevator main power unit, the main shaft is provided with winding grooves that correspond one-to-one with the winding section. One side of the winding groove is provided with a concave flat opening. A pressure plate adapted to the shape of the flat opening is provided on the flat opening. The pressure plate is detachably connected to the main shaft. One end of the steel strip is located between the flat opening and the pressure plate and is fixedly connected to the main shaft by the pressure plate. The bottom of the winding groove and the outer side of the pressure plate are both curved surfaces, forming the winding section.

[0007] Furthermore, in the aforementioned stable elevator main power unit, the connection point between the flat opening side and the winding part is the starting point of the steel strip winding on the winding part, and the starting point of winding is provided with a rounded corner or chamfer that is connected to the arc transition of the winding part.

[0008] Furthermore, in the aforementioned stable elevator main power unit, the width of the winding groove is adapted to the width of the steel strip, and two baffles are provided on the outer side of the winding groove. The inner sides of the two baffles overlap with the sidewalls of the winding groove, forming a limiting space for winding the steel strip.

[0009] Furthermore, in the aforementioned stable elevator host power unit, the two baffles are arranged opposite each other, and a convex ring is provided on the side of the two baffles that are far apart. The baffles are fixedly connected to the host shaft by fasteners passing through the convex rings.

[0010] Furthermore, in the aforementioned stable elevator host power unit, the flat opening penetrates the winding groove and extends bidirectionally to the outside of the winding groove, and the pressure plate is inlaid in the flat opening, with both ends extending into the interior of the baffle.

[0011] Furthermore, the aforementioned stable elevator host power unit also includes a mounting shaft and a drive component. The mounting shaft is frame-shaped, and the host shaft is rotatably mounted between the two side walls of the mounting shaft. The drive component is located on the outside of the mounting shaft and is connected to one end of the host shaft.

[0012] Compared with the prior art, the beneficial effects of this utility model are: by setting the winding part of the spiral curved surface, this utility model can avoid the sudden change of the winding radius of the steel strip, thereby avoiding the elevator running vibration caused by the sudden change of the winding radius, and improving the stability and comfort of the elevator operation. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of existing winding technology; Figure 2 This is a schematic diagram of the structure of the stable elevator host power unit of this utility model; Figure 3 This is a partial structural schematic diagram of the stable elevator host power unit of this utility model; Figure 4 This is a partial explosion diagram of the stable elevator host power unit of this utility model; Figure 5 This is a schematic diagram of the main shaft structure of the stable elevator main power unit of this utility model; Figure 6 A schematic diagram of the winding of the stable elevator main engine power unit of this utility model. Figure 1 ; Figure 7 A schematic diagram of the winding of the stable elevator main engine power unit of this utility model. Figure 2 ; In the diagram: 1. Main shaft; 11. Winding section; 12. Winding groove; 13. Flat opening; 2. Pressure plate; 3. Baffle; 31. Convex ring; 4. Mounting shaft seat; 5. Drive component; 6. Steel belt. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example like Figure 2-7 As shown, a stable elevator host power unit includes a host shaft 1. The outer side of the host shaft 1 is provided with a plurality of winding portions 11 arranged along the axial direction of the host shaft 1. In this embodiment, there are two winding portions 11. The winding portions 11 are used to wind steel strip 6 and are spiral curved surfaces. The pitch of the spiral curved surface is equal to the thickness of the steel strip 6.

[0017] In the above structure, the main shaft 1 is provided with a winding groove 12 that corresponds to the winding part 11. One side of the winding groove 12 is provided with a concave flat opening 13. A pressure plate 2 that is adapted to the shape of the flat opening 13 is provided on the flat opening 13. The pressure plate 2 is detachably connected to the main shaft 1. One end of the steel strip 6 is located between the flat opening 13 and the pressure plate 2, and is fixedly connected to the main shaft 1 by pressing with the pressure plate 2. The bottom of the winding groove 12 and the outer side of the pressure plate 2 are both curved surfaces, forming the winding part 11.

[0018] A vortex is a curve that unfolds in a spiral pattern within a plane. It typically rotates around a central point and gradually moves away from the center as the angle of rotation increases, exhibiting a gradually spreading trend in its shape. The distance of any point on the vortex relative to the center point is: r = r0 + (P / 360) * θ Among them, such as Figure 6-7 As shown, r0 is the distance between the starting point and the center point, P is the pitch, and θ is the cumulative rotation angle. The pitch P is taken to be equal to the steel strip thickness. Figure 6 , Figure 7The double-dotted line represents a circle with radius r0. The spiral surface of the winding section gradually moves away from the center point as the rotation angle increases, and the distance between it and the circle with radius r0 also gradually increases. In this embodiment, the steel strip is 3mm, i.e., P=3mm. When the steel strip returns to the starting point after one turn, its radius r=r0+P, that is, the value of r is exactly 3mm larger than the steel strip wound in the first layer. At this time, continuing to wind the steel strip for the second turn will not result in any sudden change in radius value. Regardless of how many layers are wound, the radius change of all steel strip windings follows the above formula, which is a linear gradual value without sudden changes. This avoids elevator shaking caused by sudden changes in winding radius, and improves the stability and comfort of elevator operation.

[0019] like Figure 6 As shown, the connection point between the flat opening 13 and the winding section 11 is the starting point for the steel strip 6 to be wound on the winding section 11. The starting point has a rounded corner that smoothly transitions to the winding section 11, allowing the steel strip 6 to smoothly transition from the pressing point (i.e., the bottom plane of the flat opening) to the winding section 11. This reduces abrupt changes in the winding radius and makes the fixed end of the steel strip 6 more securely fixed. Figure 7 As shown, the starting winding point can also be provided with a chamfer that is connected to the winding part 11 by an arc transition. Compared with a rounded corner, a chamfer is easier to process. The two ends of the chamfer are connected to the flat opening 13 and the winding part 11 by an arc transition. Since the outer diameter of the main shaft is not large, the steel strip 6 will be wound from the press-fitting point to the winding part in an arc shape in the middle of the chamfer. This can reduce the sudden change in the winding radius and improve the running stability of the elevator.

[0020] like Figure 2-4 As shown, the width of the winding groove 12 is adapted to the width of the steel strip 6. Two baffles 3 are provided on the outer side of the winding groove 12. The inner sides of the two baffles 3 overlap with the sidewalls of the winding groove 12, forming a limiting space for winding the steel strip 6. The width dimension is adapted to the width dimension of the steel strip 6; the two pairs of baffles are installed at the two side edges of the groove. The winding groove 12 positions the initial section of the steel strip 6 on the main shaft 1, and, together with the two baffles, limits the winding of the steel strip 6, providing guidance and limitation for the winding of the steel strip 6, preventing the steel strip 6 from deviating during operation, and effectively ensuring the stability and smoothness of the winding of the steel strip 6.

[0021] Two baffles 3 are arranged opposite each other, and a protruding ring 31 is provided on the side of the two baffles 3 that is far apart. The baffles 3 are fixedly connected to the main shaft 1 by fasteners passing through the protruding ring 31, which is simple and convenient.

[0022] like Figure 2 , 4As shown, the flat opening 13 penetrates the winding groove 12 and extends in both directions to the outside of the winding groove 12. The pressure plate 2 is inlaid in the flat opening 13, and its two ends extend into the interior of the baffle 3. Specifically, it can extend to be flush with the convex ring 31. The baffle 3 will increase the pressing strength of the pressure plate 2 on the steel strip 6 and ensure the connection stability between the steel strip 6 and the main shaft 1.

[0023] like Figure 1 As shown, the stable elevator host power unit mentioned above also includes a mounting base 4 and a drive component 5. The mounting base 4 is frame-shaped, and the host shaft 1 is rotatably mounted between the two side walls of the mounting base 4. The drive component 5 is a servo motor, located on the outside of the mounting base 4, and connected to one end of the host shaft 1.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. 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 can be understood by those skilled in the art.

Claims

1. A stable elevator main engine power unit, characterized in that: It includes a main shaft, and the outer side of the main shaft is provided with a plurality of winding portions arranged along the axial direction of the main shaft. The winding portions are used to wind steel strips and are spiral curved surfaces. The pitch of the spiral curved surfaces is equal to the thickness of the steel strip.

2. The stable elevator main engine power unit according to claim 1, characterized in that: The main shaft is provided with winding grooves that correspond one-to-one with the winding section. One side of the winding groove is provided with a concave flat opening. A pressure plate adapted to the shape of the flat opening is provided on the flat opening. The pressure plate is detachably connected to the main shaft. One end of the steel strip is located between the flat opening and the pressure plate and is fixedly connected to the main shaft by the pressure plate. The bottom of the winding groove and the outer side of the pressure plate are both curved surfaces, forming the winding section.

3. The stable elevator main engine power unit according to claim 2, characterized in that: The connection point between the flat opening and the winding section is the starting point of the steel strip winding on the winding section. The starting point of the winding section is provided with a rounded corner or chamfer that is connected to the arc transition of the winding section.

4. The stable elevator main engine power unit according to claim 2, characterized in that: The width of the winding groove is adapted to the width of the steel strip. Two baffles are provided on the outer side of the winding groove. The inner sides of the two baffles overlap with the sidewalls of the winding groove, forming a limiting space for winding the steel strip.

5. The stable elevator main engine power unit according to claim 4, characterized in that: The two baffles are arranged opposite each other, and a protruding ring is provided on the side of the two baffles that is far apart from each other. The baffles are fixedly connected to the main unit shaft by fasteners passing through the protruding rings.

6. The stable elevator main engine power unit according to claim 4, characterized in that: The flat opening penetrates the winding groove and extends bidirectionally to the outside of the winding groove. The pressure plate is inlaid in the flat opening, and its two ends extend into the inside of the baffle.

7. The stable elevator main power unit according to claim 1, characterized in that: It also includes a mounting shaft and a drive component. The mounting shaft is frame-shaped, and a main unit shaft is rotatably mounted between the two side walls of the mounting shaft. The drive component is located on the outside of the mounting shaft and is connected to one end of the main unit shaft.

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