Outer overtwisting device for steel wire rope double twister

Abstract

The utility model discloses an outer over-twisting device for steel wire rope double-twisting machine relates to steel wire rope twisting technical field, the utility model discloses a main body and four over-twisting wheels, the main body is cylindrical structure, is provided with straight groove cavity on the main body, and the both ends of main body are equipped with the hollow axle end, and the hollow axle end of main body one end is fixed with transmission gear, four over-twisting wheels are installed in straight groove cavity, and four over-twisting wheels are divided into two rows and are arranged in parallel. The utility model discloses a straight groove cavity on the pivot is designed as only in the top and bottom open, and the structure of the periphery side wall is closed, forms a high rigidity box type section for the installation of over-twisting wheel, and the same over-twisting wheel both has the support ability, and the ability of over-twisting wheel's resistance to torsion and bending deformation is enhanced significantly, ensures the dynamic balance precision of entire rotating body under the high speed, effectively suppresses vibration and noise, and provides solid foundation for the stable processing of steel wire rope.

Description

Technical Field

[0001] This utility model belongs to the field of wire rope twisting technology, and in particular relates to an external over-twisting device for a wire rope double twisting machine. Background Technology

[0002] In the double-twist rope forming process of steel wire rope, in order to obtain a stable structure and eliminate residual stress, an external overtwist device is usually set at the exit of the double-twist machine. Its basic working principle is to make the already twisted wire pass around an actively rotating overtwist device before output. The friction between the device and the wire forces the wire to rotate in the opposite direction to the initial twist, thereby offsetting or precisely controlling the final residual torque.

[0003] Currently, most overtwisters on the market have a double-wheel structure, with the steel wire winding around the guide wheel a large number of times. This leads to damage issues when twisting galvanized steel wire. Moreover, the wrap angle formed between the steel wire and the overtwisting wheel is relatively large, and the twisting tension also needs to be increased accordingly. To address this, an improved design has emerged that uses more guide wheels to increase the total wrap angle. For example, the utility model patent with application number 201520118495.8 has been published. This device arranges four overtwisting wheels and improves the anti-twist capability by increasing the wrap angle of the wire.

[0004] However, these existing four-wheeled twisting devices still have the following structural and practical defects in practical applications: 1. Insufficient structural rigidity and poor operational stability: The guide wheel cavity usually has an opening on the side to allow the introduction of wire or the installation of components. The non-closed cavity structure weakens the overall torsional rigidity and dynamic balance performance of the shaft. It is prone to vibration and noise when rotating at high speed, which affects the processing quality of the wire rope and may reduce the service life of key components such as bearings.

[0005] 2. The installation and maintenance of guide wheels are inconvenient and affect production efficiency: Most of the overtwisting wheels in the existing design adopt single-end cantilever support. Although this structure is simple, the support rigidity is weak and it is difficult to withstand high tension. It is also not convenient to disassemble quickly. When it is necessary to replace the worn overtwisting wheel or adapt to different specifications of wire, the operation is cumbersome and time-consuming, resulting in long equipment downtime and high maintenance costs.

[0006] Therefore, there is an urgent need in the field for an external overtwist device that can maintain high efficiency in anti-torsion while possessing higher structural rigidity, operational stability, and convenient maintenance. Summary of the Invention

[0007] The purpose of this invention is to provide an external overtwisting device for a wire rope double twisting machine. By designing the straight groove cavity on the rotating shaft as an open structure with only the top and bottom open and the four sides closed, a high-rigidity box-shaped cross section is formed for the installation of the overtwisting wheel. Similarly, both ends of the overtwisting wheel have support capacity, which significantly enhances the overtwisting wheel's ability to resist torsion and bending deformation, ensures the dynamic balance accuracy of the entire rotating body at high speed, effectively suppresses vibration and noise, and provides a solid foundation for the stable processing of wire rope.

[0008] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is an external over-twisting device for a wire rope double twisting machine, comprising a main body and four over-twisting wheels; The main body is a cylindrical structure with a straight groove cavity. Both ends of the main body have hollow shaft ends, and a transmission gear is fixed on the hollow shaft end at one end of the main body. The four over-twisting wheels are installed in the straight groove cavity. The four over-twisting wheels are arranged in two rows side by side. The arrangement direction of the two over-twisting wheels in each row is perpendicular to the axis of the main body. The grooves of the two diagonally opposite over-twisting wheels in one of the four over-twisting wheels are tangent to the axis of the two hollow shaft ends, respectively. The overtwisting wheel is installed in the straight groove cavity by a fastening mechanism. The fastening mechanism includes a mandrel, which is composed of a large-diameter section and a small-diameter section. The outer ends of the large-diameter section and the small-diameter section are respectively provided with end heads and threaded wires. The main body is formed by a straight groove cavity to form two side plate parts, and the two side plate parts are respectively provided with four first T-shaped openings and four second T-shaped openings; The mandrel passes through a first T-shaped opening and a second T-shaped opening that are concentrically distributed. The end gap of one end of the mandrel is set in the first T-shaped opening. A nut located in the second T-shaped opening is threaded onto the small diameter section. A bearing is installed in the spindle hole of the overtwist wheel. The inner ring of the bearing is fitted on the small diameter section and fits against the inner end face of the large diameter section. A T-shaped sleeve is fitted on the small diameter section. The T-shaped sleeve passes through the small diameter part of the second T-shaped opening and fits against the inner ring of the bearing. The end ring of the T-shaped sleeve is located between the nut and the second T-shaped opening.

[0009] Furthermore, it also includes a fixing frame, which includes two end plates. The end plates are provided with annular openings. The hollow shaft ends at both ends of the main body pass through the annular openings of the end plates and are connected to the bearing bodies. A base is fixed at the bottom between the two end plates.

[0010] Furthermore, it also includes a protective cover that covers the outside of the two end plates and is fixed to the end plates by screws.

[0011] Furthermore, both the T-shaped sleeve and the inner ring of the bearing are provided with external keyways along the length direction, the small-diameter section of the mandrel is provided with an internal keyway, and a key bar is provided between the external keyway and the internal keyway.

[0012] Furthermore, a wear-resistant bushing is fixed inside the hollow shaft end.

[0013] Furthermore, the straight groove cavity is arranged along the length of the main body, and the straight groove cavity passes through the center line of the main body.

[0014] This utility model has the following beneficial effects: 1. This utility model designs the straight groove cavity on the rotating shaft as a structure that is open only at the top and bottom and closed on all four sides, forming a high-rigidity box-shaped cross section for the installation of the overtwist wheel. Similarly, both ends of the overtwist wheel have support capacity, which significantly enhances the overtwist wheel's ability to resist torsion and bending deformation, ensures the dynamic balance accuracy of the entire rotating body at high speed, effectively suppresses vibration and noise, and provides a solid foundation for the stable processing of wire rope.

[0015] 2. This utility model uses a fastening mechanism for the installation of overtwist wheels, which not only improves the extremely high rigidity and stability of the overtwist wheels, but also has the ability to be disassembled. This allows any overtwist wheel to be removed or installed individually and quickly without disassembling a large number of other parts, thereby improving production efficiency and reducing the difficulty and cost of long-term maintenance.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the main body and the over-twist wheel of this utility model. Figure 2 This is a cross-sectional view of the main body of this utility model along the axial direction; Figure 3 This is a cross-sectional view of the overtwist wheel of this utility model in the axial direction; Figure 4 A schematic diagram of the structure of this utility model after the mounting base and protective cover are provided; The attached diagram lists the components represented by each number as follows: 1-Main body, 2-Twist wheel, 3-Mandrel, 4-End plate, 5-Guard cover, 101-Straight groove cavity, 102-Hollow shaft end, 103-Transmission gear, 104-First T-shaped opening, 105-Second T-shaped opening, 201-Bearing, 202-T-shaped sleeve, 301-Large diameter section, 302-Small diameter section, 303-End, 304-Nut, 401-Base, 402-Annular opening, 403-Bearing body. Detailed Implementation

[0019] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 As shown, this utility model is an external overtwisting device for a wire rope double twisting machine, including a main body 1 and four overtwisting wheels 2; The main body 1 is a cylindrical structure. A straight groove cavity 101 is provided on the main body 1. Hollow shaft ends 102 are provided at both ends of the main body 1. A transmission gear 103 is fixed on the hollow shaft end 102 at one end of the main body 1. Four over-twisting wheels 2 are installed in the straight groove cavity 101. The four over-twisting wheels 2 are arranged in two rows side by side. The arrangement direction of the two over-twisting wheels 2 in each row is perpendicular to the axis of the main body 1. The grooves of the two diagonally opposite over-twisting wheels 2 are tangent to the axis of the two hollow shaft ends 102 respectively. The over-twisting wheel 2 is installed in the straight groove cavity 101 by a fastening mechanism. The fastening mechanism includes a mandrel 3, which is composed of a large-diameter section 301 and a small-diameter section 302. The outer ends of the large-diameter section 301 and the small-diameter section 302 are respectively provided with an end 303 and a threaded wire. The main body 1 is formed by a straight groove cavity 101 to form two side plate parts, and four first T-shaped openings 104 and four second T-shaped openings 105 are respectively provided on the two side plate parts; The mandrel 3 passes through the first T-shaped opening 104 and the second T-shaped opening 105, which are concentrically distributed. The end 303 of one end of the mandrel 3 is gapped in the first T-shaped opening 104. The small diameter section 302 is threaded with a nut 304 located in the second T-shaped opening 105. A bearing 201 is installed in the shaft hole of the over-twisting wheel 2. The inner ring of the bearing 201 is fitted on the small diameter section 302 and is in contact with the inner end face of the large diameter section 301. A T-shaped sleeve 202 is fitted on the small diameter section 302. The T-shaped sleeve 202 passes through the small diameter part of the second T-shaped opening 105 and is in contact with the inner ring of the bearing 201. The end ring of the T-shaped sleeve 202 is located between the nut 304 and the second T-shaped opening 105.

[0021] Among them, such as Figure 4 As shown, it also includes a fixing frame, which includes two end plates 4. The end plates 4 are provided with annular openings 402. The hollow shaft ends 102 at both ends of the main body 1 pass through the annular openings 402 of the end plates 4 and are connected by bearing bodies 403. A base 401 is fixed at the bottom between the two end plates 4.

[0022] Among them, such as Figure 4 As shown, it also includes a protective cover 5, which covers the outside of the two end plates 4 and is fixed to the end plates 4 by screws.

[0023] Among them, such as Figure 3 As shown, both the T-shaped sleeve 202 and the inner ring of the bearing 201 have external keyways along the length direction, and the small-diameter section 302 of the spindle 3 has an internal keyway. A key bar is provided between the external keyway and the internal keyway.

[0024] A wear-resistant bushing is fixed inside the hollow shaft end 102.

[0025] Among them, such as Figure 1-2 As shown, the straight groove cavity 101 is arranged along the length direction of the main body 1, and the straight groove cavity 101 passes through the axis of the main body 1.

[0026] The route of this utility model is as follows: (Reference) Figure 2 The four twisting rollers 2 are named upper left, lower left, upper right and lower right respectively. The wire passes through the lower left, lower right, upper left and upper right twisting rollers 2 in sequence and is output from the position where the bottom point of the upper right twisting roller 2 is tangent to the hollow shaft end 102.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above 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 one or more embodiments or examples.

[0028] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An external overtwisting device for a wire rope double-twisting machine, comprising a main body (1) and four overtwisting wheels (2), characterized in that: The main body (1) is a cylindrical structure. A straight groove cavity (101) is provided on the main body (1). Hollow shaft ends (102) are provided at both ends of the main body (1). A transmission gear (103) is fixed on the hollow shaft end (102) at one end of the main body (1). The four over-twisting wheels (2) are installed in the straight groove cavity (101). The four over-twisting wheels (2) are arranged in two rows side by side. The arrangement direction of the two over-twisting wheels (2) in each row is perpendicular to the axis of the main body (1). The grooves of the two diagonally opposite over-twisting wheels (2) of the four over-twisting wheels (2) are tangent to the axis of the two hollow shaft ends (102) respectively. The over-twisting wheel (2) is installed in the straight groove cavity (101) by a fastening mechanism. The fastening mechanism includes a mandrel (3), which is composed of a large-diameter section (301) and a small-diameter section (302). The outer ends of the large-diameter section (301) and the small-diameter section (302) are respectively provided with an end (303) and a thread. The main body (1) is formed by a straight groove cavity (101) to form two side plate parts, and the two side plate parts are respectively provided with four first T-shaped openings (104) and four second T-shaped openings (105). The mandrel (3) passes through the first T-shaped opening (104) and the second T-shaped opening (105) which are concentrically distributed. The end (303) of one end of the mandrel (3) is gapped in the first T-shaped opening (104). The small diameter section (302) is threaded with a nut (304) located in the second T-shaped opening (105). The overtwisting wheel (2) has a bearing (201) installed in its shaft hole. The inner ring of the bearing (201) is fitted on the small diameter section (302) and is in contact with the inner end face of the large diameter section (301). A T-shaped sleeve (202) is fitted on the small diameter section (302). The T-shaped sleeve (202) passes through the small diameter part of the second T-shaped opening (105) and is in contact with the inner ring of the bearing (201). The end ring of the T-shaped sleeve (202) is located between the nut (304) and the second T-shaped opening (105).

2. The external overtwisting device for a wire rope double-twisting machine according to claim 1, characterized in that, It also includes a fixing frame, which includes two end plates (4), and the end plates (4) are provided with annular openings (402). The hollow shaft ends (102) at both ends of the main body (1) pass through the annular openings (402) of the end plates (4) and are connected to a bearing body (403). A base (401) is fixed at the bottom between the two end plates (4).

3. The external overtwisting device for a wire rope double-twisting machine according to claim 2, characterized in that, It also includes a cover (5) which covers the outside of the two end plates (4) and is fixed to the end plates (4) by screws.

4. The external overtwisting device for a wire rope double-twisting machine according to claim 1, characterized in that, The inner rings of the T-shaped sleeve (202) and the bearing (201) are provided with external keyways along the length direction, and the small diameter section (302) of the spindle (3) is provided with an internal keyway. A key bar is provided between the external keyway and the internal keyway.

5. The external overtwisting device for a wire rope double-twisting machine according to claim 1, characterized in that, A wear-resistant bushing is fixed inside the hollow shaft end (102).

6. The external overtwisting device for a wire rope double-twisting machine according to claim 1, characterized in that, The straight groove cavity (101) is arranged along the length direction of the main body (1), and the straight groove cavity (101) passes through the axis of the main body (1).

Images