A limiting and tensioning device for elevator wire rope

Abstract

The present invention discloses a limiting and tensioning device for elevator wire ropes, and relates to the technical field of elevators. The device comprises an adjusting frame and a sheave mechanism. The present invention has the effect of limiting the wire ropes on both sides of the elevator sheave through the symmetrically arranged sheave mechanisms, thereby solving the problem of the wire ropes detaching from the elevator sheaves. By adjusting the positions of the sheave mechanisms on both sides, the elevator wire ropes are tensioned, thereby solving the problem that the length of the wire ropes changes when the wire ropes are used for a long time or the temperature difference changes greatly, which easily causes the wire ropes to be entangled with each other or the elevator positioning to have errors. By adjusting the positions of the sheave mechanisms in opposite directions, the contact area between the wire rope and the elevator sheave is increased, thereby increasing the friction between the wire rope and the sheave, thereby solving the problem of slippage between the wire rope and the elevator sheave.

Description

Technical Field

[0001] The invention belongs to the technical field of elevators, and in particular relates to a limiting and tensioning device for an elevator steel rope. Background Art

[0002] During elevator operation, the car may overspeed and fall due to control failure, insufficient traction force, brake failure or insufficient braking force, overload drag, traction rope breakage and other reasons; the elevator wire rope will stretch and change its length due to long-term use. As the wire rope and the elevator sheave groove wear, the friction between the wire rope and the elevator sheave will also decrease during the operation of the elevator; in an environment with large temperature differences, the phenomenon of elevator wire rope length change caused by thermal expansion and contraction is also very obvious. Therefore, when the elevator is running at high speed, the wire rope may detach from the elevator sheave, or when the elevator starts and stops, the friction between the wire rope and the elevator sheave is insufficient, causing the elevator to slip, posing a serious safety hazard. Summary of the Invention

[0003] The object of the present invention is to provide a limiting and tensioning device for an elevator wire rope, which limits the wire ropes on both sides of the elevator sheave through symmetrically arranged sheave mechanisms, thereby solving the problem that the wire ropes may detach from the elevator sheave; by adjusting the positions of the sheave mechanisms on both sides, the elevator wire rope is tensioned, thereby solving the problems that the length of the wire rope changes when the wire rope is used for a long time or the temperature difference changes greatly, which easily causes the wire ropes to be entangled with each other and the elevator positioning error; by adjusting the positions of the sheave mechanisms in opposite directions, the contact area between the wire rope and the elevator sheave is increased, thereby increasing the friction between the wire rope and the sheave, thereby solving the problem that the wire rope may slip between the elevator sheave.

[0004] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The present invention is a limiting and tensioning device for an elevator steel rope, comprising an adjusting frame and a sheave mechanism;

[0006] The adjustment frame includes fixed plates arranged in parallel; a first through hole is opened on one surface of the fixed plate; and an adjustment plate is fixedly connected to opposite sides of the fixed plate.

[0007] A first through hole is formed on one surface of the adjustment plate; and a waist-shaped hole is formed on one surface of the adjustment plate symmetrically relative to the first through hole.

[0008] The sheave mechanism includes a frame; guide pillars are fixedly connected to opposite outer surfaces of the frame; a second through hole is opened on one surface of the frame; and sheaves are fixedly connected to the inner surface of the frame in parallel in a horizontal direction.

[0009] The peripheral side surface of the guide column is slidably matched with the inner surface of the waist-shaped hole; the second through hole corresponds to the first through hole and is connected by bolts.

[0010] Furthermore, the adjustment frame also includes a connecting rod.

[0011] Furthermore, a second through hole and a third through hole are opened on one surface of the connecting rod; the second through hole corresponds to the first through hole and is fixedly connected by bolts.

[0012] Furthermore, the third through hole is fixedly connected to the elevator sheave mechanism via bolts.

[0013] The present invention has the following beneficial effects:

[0014] 1. The present invention has a simple structure, is easy to install and adjust, and can adapt to various elevator structures.

[0015] 2. The present invention can better limit the wire rope by installing it at the elevator sheave mechanism, effectively preventing the wire rope from escaping from the elevator sheave due to shaking or the like.

[0016] 3. The present invention realizes the tension adjustment of the elevator wire rope by adjusting the position of the sheave mechanism, so that the wire rope always maintains a better working tension.

[0017] 4. The present invention increases the contact area between the wire rope and the elevator sheave by adjusting the position of the sheave mechanism, thereby reducing the possibility of slippage between the wire rope and the elevator sheave.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a structural schematic diagram of a position limiting and tensioning device for an elevator wire rope according to the present invention;

[0021] Figure 2 Schematic diagram of the structure of the adjustment frame;

[0022] Figure 3 It is a structural diagram of the grooved wheel mechanism;

[0023] Figure 4 is a structural diagram of the connecting rod;

[0024] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0025] 1-adjusting frame, 2-groove mechanism, 3-connecting rod, 101-adjusting plate, 201-frame, 202-groove, 203-guide column, 204-second through hole, 301-second through hole, 302-third through hole, 1011-first through hole, 1012-waist-shaped hole, 1013-fixing plate, 1014-first through hole. DETAILED DESCRIPTION

[0026] 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 any creative efforts shall fall within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "opening", "circumferential side", "relative", "horizontal", "symmetrical", "inner" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] See also Figure 1-4 As shown, the present invention is a limiting and tensioning device for an elevator wire rope, comprising an adjusting frame 1 and a sheave mechanism 2;

[0029] The adjustment frame 1 includes two fixed plates 1013 arranged in parallel; a first through hole 1014 is opened on one surface of the fixed plate 1013; and the adjustment plates 101 are welded to opposite sides of the fixed plate 1013.

[0030] A first through hole 1011 is formed on one surface of the adjustment plate 101; a waist-shaped hole 1012 is formed on one surface of the adjustment plate 101 symmetrically with respect to the first through hole 1011;

[0031] The sheave mechanism 2 includes a frame 201; guide posts 203 are welded to opposite outer surfaces of the frame 201; a second through hole 204 is formed on one surface of the frame 201; two sheaves 202 are fixedly connected horizontally and side by side to the inner surface of the frame 201 via pins; the steel wire ropes on both sides of the elevator sheave pass through the two sheaves 202 of the sheave mechanism 2, so that the two sheave mechanisms 2 on the adjustment frame 1 respectively limit the steel wire ropes on both sides of the elevator sheave, thereby preventing the steel wire ropes from detaching from or deviating from the elevator sheave due to shaking.

[0032] The side surface of the guide column 203 is in sliding cooperation with the inner surface of the waist-shaped hole 1012; the second through hole 204 corresponds to the first through hole 1014 and is connected by bolts; the left and right sheave mechanisms 2 of the adjusting frame 1 are moved toward each other by adjusting the bolts, thereby achieving the tensioning effect on the wire rope, and the sliding cooperation between the guide column 203 and the waist-shaped hole 1012 makes the sheave mechanism 2 less likely to deflect when adjusting the position.

[0033] The adjustment frame 1 further includes a connecting rod 3 , which may be an L-shaped or straight rod or other structures that are easy to install.

[0034] A second through hole 301 and a third through hole 302 are formed on one surface of the connecting rod 3 . The second through hole 301 corresponds to the first through hole 1011 and is fixedly connected by bolts.

[0035] Among them, the third through hole 302 is fixedly connected to the elevator sheave mechanism by bolts; by adjusting at the elevator sheave end, the wire rope can increase the contact area with the elevator sheave, thereby increasing the friction between the wire rope and the elevator sheave, and avoiding slipping between the wire rope and the elevator sheave.

[0036] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0037] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A limiting and tensioning device for elevator wire rope, characterized in that: It comprises an adjustment frame (1) and a grooved wheel mechanism (2); The adjustment frame (1) comprises fixed plates (1013) arranged in parallel; a first through hole (1014) is opened on one surface of the fixed plate (1013); and the adjustment plates (101) are respectively fixedly connected to opposite sides of the fixed plate (1013); A first through hole (1011) is formed on one surface of the adjustment plate (101); a waist-shaped hole (1012) is formed on one surface of the adjustment plate (101) symmetrically with respect to the first through hole (1011); The grooved wheel mechanism (2) comprises a frame (201); guide pillars (203) are fixedly connected to opposite outer surfaces of the frame (201); a second through hole (204) is opened on a surface of the frame (201); grooved wheels (202) are fixedly connected in parallel in a horizontal direction on the inner surface of the frame (201); The peripheral side surface of the guide column (203) is slidably matched with the inner surface of the waist-shaped hole (1012); the second through hole (204) corresponds to the first through hole (1014) and is connected by bolts; The adjustment frame (1) further comprises a connecting rod (3), the connecting rod (3) is an L-shaped structure; a second through hole (301) and a third through hole (302) are formed on one surface of the connecting rod (3); The second through hole (301) corresponds to the first through hole (1011) and is fixedly connected by bolts; the third through hole (302) is fixedly connected to the elevator sheave mechanism by bolts.

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