Rope fixing structure and elevator

Abstract

The utility model provides a rope fixing structure and an elevator. The rope fixing structure comprises a car roof cross beam, a rope head rod and a fixing device. The car roof cross beam is of a circular-tube-shaped structure. The car roof cross beam is located in a car roof of the elevator, and the rope is hung on the car roof cross beam. The rope bypasses the car roof cross beam and then bypasses the rope head rod to become the tail end of the rope, and the fixing device fixes the rope bypassing the rope head rod to the car roof cross beam. The car roof cross beam is designed to be of a circular tube structure, the rope is wound on the circular tube cross beam, by means of the principle of the Euler formula, the rope fixing structure is simplified, the height of the top space of an elevator is reduced, and the requirement of the elevator for the height of the top floor is lowered.

Description

Technical Field

[0001] This utility model relates to the field of elevators, specifically to a cable fixing structure and an elevator. Background Technology

[0002] Existing elevators typically use wire rope end assemblies or cable end assemblies to secure the wire rope or cable to the car top beam, such as... Figure 1 As shown, the flexible rope is connected to the car top beam via a rope end assembly. The rope end assembly includes a rope end, a screw, shock-absorbing rubber, a rope end spring, a locking nut, and a cotter pin, all sequentially threaded onto the screw. During installation, the screw fixed to the rope end passes through a rope end plate on the car top beam. Below the rope end plate, the shock-absorbing rubber, rope end spring, locking nut, and cotter pin are sequentially installed onto the rope end screw. This method requires a height space of at least 250mm, placing high demands on the height of the elevator's top floor. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of this utility model is to provide a rope fixing structure and an elevator.

[0004] According to the present invention, a rope fixing structure includes a circular tube beam, a rope end bar, and a fixing device; the circular tube beam is a circular tube structure.

[0005] The circular tube beam is located inside the elevator car top, and the rope is suspended from the circular tube beam;

[0006] The rope passes over the round tube beam and then over the rope end bar to become the end of the rope. The fixing device fixes the rope that has passed over the rope end bar to the round tube beam.

[0007] The cable includes steel strips or steel wire ropes;

[0008] The fixing device is a rope end pressure plate; the rope end pressure plate has a C-shaped plate structure.

[0009] There are multiple circular tube beams. The rope passes around multiple circular tube beams, then around the rope end bar, and finally is fixed on the last circular tube beam.

[0010] Preferably, the circular tube beam is also equipped with an anti-rotation structure.

[0011] Preferably, the anti-rotation structure is a protruding structure;

[0012] The car roof is provided with a groove structure, and the shape of the protruding structure matches the shape of the groove structure. The protruding structure is inserted into the groove structure to prevent the circular tube beam from rotating.

[0013] Preferably, it also includes a cable entry guide device; the cable entry guide device is provided on the cable entry side of the circular tube beam.

[0014] Preferably, it also includes a cable fixing and guiding device; the fixing device is provided with a cable fixing and guiding device.

[0015] Preferably, it also includes an inspection device; the inspection device is a C-shaped plate structure; the inspection device is installed on the cable entry guide device.

[0016] Preferably, both the cable fixing guide device and the cable positioning guide device have one of the following structures:

[0017] It is a single plate with grooves on it that match the shape of the rope.

[0018] Alternatively, the guide device consists of two plate-shaped parts. The inner plate is thicker than the cable and has a notch to limit its left and right position on the crossbeam. The outer plate is pressed onto the inner plate and then fixed.

[0019] An elevator according to this utility model adopts the aforementioned cable fixing structure.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention designs the car top beam as a circular tube structure and winds the rope around the circular tube beam. By using the principle of Euler's formula, the rope fixing structure is simplified, thereby reducing the height of the elevator top space and lowering the elevator's requirements for the top floor height. Attached Figure Description

[0022] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the existing technology;

[0024] Figure 2 This is a schematic diagram of the structure of this utility model;

[0025] Figure 3 for Figure 2 A side view diagram;

[0026] Figure 4 This is a structural diagram of the present invention when it has multiple crossbeams;

[0027] The diagram shows:

[0028] Detailed Implementation

[0029] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0030] This utility model provides a rope fixing structure that utilizes the principle of Euler's formula. The rope includes a steel strip or steel wire rope, specifically, as shown in the example below. Figure 2 , Figure 3 As shown, the rope fixing structure includes a circular tube beam 501, a rope end bar 502, a fixing device 503, and an inspection device 505; the fixing device 503 is a rope end pressure plate, and the rope end pressure plate is a C-shaped plate structure.

[0031] The circular tube beam 501 is located inside the elevator car top and serves as the beam of the car top. The cable is suspended from the circular tube beam 501. The circular tube beam 501 is a circular tube structure. In a preferred embodiment, since the circular tube beam 501 and the rope end bar 502 are subject to the rotational force of the cable, an anti-rotation structure is also provided on the circular tube beam 501 and the rope end bar 502 to prevent them from rotating. In a preferred embodiment, the anti-rotation structure is a protruding structure. A groove structure is provided in the car top, and the shape of the protruding structure matches the shape of the groove structure. The protruding structure is inserted into the groove structure to achieve the anti-rotation of the circular tube beam 501.

[0032] In a preferred embodiment, a cable entry guide device 507 is provided on the circular tube beam 501 on the cable entry side to ensure that the position of the cable entering the car top is at the center of the car.

[0033] The rope passes around the round tube beam 501 and then around the rope end bar 502 to become the end of the rope. The rope end pressure plate fixes the rope 506 that has passed around the rope end bar 502 to the car top. Specifically, the rope end pressure plate fixes the rope 506 that has passed around the rope end bar 502 to the round tube beam 501.

[0034] In a preferred embodiment, a rope fixing guide device 508 is provided at the rope end pressure plate to ensure that the position where the rope is fixed is not misaligned with the position where it enters the car top; both the rope entry guide device 507 and the rope fixing guide device 508 can have the following structure:

[0035] The guiding device can provide guidance for the cable 506 by creating grooves on the plate that match the shape of the cable. Alternatively, the guiding device consists of two plate-shaped parts, with the inner plate being thicker than the cable and having notches to limit its left and right position on the crossbeam, and the outer plate pressing against the inner plate for fixation.

[0036] The cable fixing structure also includes an operating manual, which explains the installation, inspection and maintenance methods of the device; the inspection device and the operating manual can be installed on the cable entry guide device 507.

[0037] After the elevator is installed, a line is drawn on the rope 506 and the inspection device 505 at the fixed point corresponding to the rope 506. During maintenance, the line is observed to verify whether the rope is in its original position. In a preferred embodiment, the inspection device 505 is a C-shaped plate structure.

[0038] Existing elevators typically use wire rope end assemblies or steel strip end assemblies to fix the wire rope or steel strip to the car top beam. This method requires a height space of more than 250mm, so the fixing structure protrudes from the car top space. In contrast, the fixing components involved in the cable fixing structure of this utility model (such as the rope end bar 502, fixing device 503, etc.) are all located inside the car top, which greatly reduces the requirement for the top floor height of the elevator shaft, and further reduces the requirement for the top floor height of the elevator shaft.

[0039] In a preferred embodiment, to increase the angle at which the rope wraps around the circular tube beam 501, multiple beams can be provided, preferably two, such as... Figure 4 As shown, the rope is fixed after passing through multiple circular tube beams 501.

[0040] The principle of the height reduction cable fixing structure is as follows: According to Euler's formula, after a flexible structure such as a rope passes over a circular wheel, the ratio of the maximum tension at its two ends satisfies T. 1 / T2≤e fα In the formula, T1 and T2 represent the maximum and minimum tension forces borne by the two ends of the rope entering and exiting the circular pulley, respectively; f is the equivalent coefficient of friction between the rope and the circular pulley; and α is the wrap angle of the rope on the circular pulley. Figure 3 As shown, in a preferred embodiment where the number of circular tube beams 501 is one, α > 270°, and can be 300°; for example... Figure 4 As shown, in a preferred embodiment where there are two circular tube beams 501, the angles α in the left and right circular tube beams 501 are α1 and α2, respectively; α1 < 180° can be 150°, and α2 > 180° can be 190°. e is the base of the natural logarithm. In this utility model, one end of the rope bears the elevator car load T1, and after it is wrapped around the circular beam on the car top with a wrap angle α, its tension decreases to Therefore, a relatively simple method can be used to fix the other end to suspend the car. Since conventional rope end fixing devices protrude from the car top, increasing the height requirement of the top floor of the hoistway, this device can significantly reduce this requirement.

[0041] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0042] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A rope fixing structure characterized by comprising: It comprises a round pipe beam (501), a rope head stick (502) and a fixing device (503); the round pipe beam (501) is in a round pipe structure; The round pipe beam (501) is located in the car roof of the elevator, and the rope cable (506) is hung on the round pipe beam (501); The rope cable (506) is wound around the round pipe beam (501) and then around the rope head stick (502) to become the end of the rope cable, and the fixing device (503) fixes the rope cable (506) wound around the rope head stick (502) to the round pipe beam (501); The rope cable (506) comprises a steel belt or a steel wire rope; The fixing device (503) is a rope head pressing plate; the rope head pressing plate is a C-shaped plate structure.

2. The rope securing structure according to claim 1, characterized by, The number of the round pipe beams (501) is multiple, and the rope cable (506) is continuously wound around the multiple round pipe beams (501) and then around the rope head stick (502) and finally fixed to the last round pipe beam (501).

3. The rope securing structure according to claim 1, characterized by, The round pipe beam (501) is further provided with an anti-rotation structure.

4. The rope securing structure according to claim 3, characterized by The anti-rotation structure is a protruding structure; The car roof is provided with a groove structure, the shape of the protruding structure matches the shape of the groove structure, the protruding structure is inserted into the groove structure to realize the anti-rotation of the round pipe-shaped round pipe beam (501).

5. The rope cable securing structure of claim 1, wherein, It further comprises a rope cable positioning guide device (507); the round pipe beam (501) is provided with the rope cable positioning guide device (507) on the side where the rope cable (506) enters.

6. The rope cable securing structure of claim 1, wherein, It further comprises a rope cable fixing guide device (508); the fixing device (503) is provided with the rope cable fixing guide device (508).

7. The rope cable securing structure of claim 6, wherein, It further comprises an inspection device (505); the inspection device (505) is a C-shaped plate structure; the inspection device is installed on the rope cable positioning guide device (507).

8. The rope cable securing structure of claim 7, wherein, The structures of the rope cable fixing guide device (508) and the rope cable positioning guide device (507) are any of the following structures: It is a single plate, and a groove matching the shape of the rope cable is formed on the plate; Or, the guide device is composed of two plate-shaped parts, the inner side plate has a thickness greater than the size of the rope cable, has a gap for limiting the left and right positions on the beam, and the outer side plate is pressed on the inner side plate after being fixed.

9. An elevator characterized by The rope cable fixing structure of any one of claims 1 to 8 is adopted.

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