A wire rope loading anti-twist device

Abstract

The present invention discloses a wire rope loading anti-twist device, comprising: a loading joint, an anti-twist component and two sets of anti-twist mechanisms; one side end face of the loading joint is connected to a wire rope, and the opposite side end face is connected to a loading actuator; the anti-twist component is of a T-shaped structure, and the joint connecting plate is fixedly installed on the bottom end face of the loading joint, so that the positioning plate is located in the longitudinal symmetry plane of the wire rope, and anti-twist mechanisms are symmetrically arranged on both sides of the positioning plate. Bearings are arranged at the ends of the anti-twist mechanisms in contact with the positioning plate for clamping the positioning plate in the gap formed by the symmetric bearings, so that the anti-twist component moves along the axis of the wire rope under the action of the loading force and is restricted from rotating along the axis of the wire rope. The technical solution of the embodiment of the present invention solves the problems of high test cost and complex test method in the existing wire rope loading test; and the problem of wear risk brought to the test piece.

Description

Technical Field

[0001] The present invention relates to, but is not limited to, the technical field of wire rope loading tests, and particularly relates to an anti-torsion device for wire rope loading. Background Art

[0002] The moving components of a helicopter rotor hub bear the centrifugal force load transmitted by the blades. When applying centrifugal force to the moving components during fatigue tests, wire ropes are mostly used to apply tensile force. Due to the relatively large centrifugal force value, the loading wire ropes used are mostly multi-strand wire rope systems (i.e., wire ropes formed by twisting multiple strands in one or more layers). During the loading and unloading processes, the wire ropes will continuously rotate due to unbalanced internal forces, thereby generating additional torque on the fatigue test piece. Even if anti-rotation wire ropes are used in the test, only the degree of rotation can be reduced, and the generation of additional torque cannot be completely avoided.

[0003] In previous tests, to avoid the influence of the additional torque generated by the rotation of the wire rope on the test, there are generally two treatment methods: one is to generate a counter torque by applying an external force to offset the additional torque generated by the wire rope; the other is to set an anti-torque device at one end of the wire rope close to the test piece to prevent the generation of additional torque. The first method above requires adding an additional loading actuator and a measurement and control system. The anti-torque device set at one end of the wire rope close to the test piece in the second method has high requirements for machining and assembly accuracy, and there is a risk of wear to the test piece during installation and testing because the anti-torque device is in direct contact with the test piece. Summary of the Invention

[0004] The object of the present invention is: The embodiments of the present invention provide an anti-torsion device for wire rope loading to solve the problems in the existing anti-torque solutions in wire rope loading tests, where the method of adding an additional loading actuator and a measurement and control system results in high test costs and complex test methods; or, in the existing method of adding an anti-torque device, due to the high requirements for machining and assembly accuracy of its installation position, and it will cause a risk of wear to the test piece during installation and testing.

[0005] The technical solution of the present invention is:

[0006] The embodiments of the present invention provide an anti-torsion device for wire rope loading, including:

[0007] A loading joint 1, an anti-torsion component 2, a fixing screw 3, and two sets of anti-torsion mechanisms fixedly installed on the test bench;

[0008] Wherein, one side end face of the loading joint 1 is connected to the wire rope A, and the opposite side end face is connected to the loading actuator;

[0009] The anti-twist assembly 2 includes a joint connecting plate and a positioning plate which are perpendicularly arranged to form a T-shaped structure. The joint connecting plate is fixedly installed on the bottom end face of the loading joint 1 through fixing screws 3, and the positioning plate is located within the longitudinal symmetry plane of the wire rope A. Anti-twist mechanisms are symmetrically arranged on both sides of the positioning plate. At the end of each anti-twist mechanism in contact with the positioning plate, there is a bearing 5 for clamping the positioning plate in the gap formed by the symmetric bearings 5, so that the anti-twist assembly 2 moves along the axis of the wire rope A under the action of the loading force and is restricted from rotating along the axis of the wire rope A.

[0010] Optionally, in the wire rope loading anti-twist device as described above, each set of the anti-twist mechanisms includes: a bearing connecting bolt 4, a bearing 5, a bearing mounting seat 6, a bracket connecting bolt 7, and a mounting bracket 8;

[0011] Among them, the bearing mounting seat 6 is arranged in a U-shaped structure. At both ends of the symmetric sides of the U-shaped structure, there are double fork ears. In each double fork ear, a bearing 5 is installed through a bearing connecting bolt 4. A first through hole is provided at the middle connecting part of the U-shaped structure, and the inner spacing of the U-shaped structure is larger than the inscribed circle diameter of the hexagonal head of the bracket connecting bolt 7, for the bracket connecting bolt 7 to pass through the first through hole to fixedly install the bearing mounting seat 6 on the mounting bracket 8;

[0012] Among them, the two mounting brackets 8 are symmetrically arranged along the symmetry plane of the positioning plate, and the two mounting brackets 8 are fixedly connected to the test bench through a connecting component.

[0013] Optionally, in the wire rope loading anti-twist device as described above,

[0014] Each mounting bracket 8 is an L-shaped welded bracket, including a connecting plate and a fixed bottom plate. At the middle position of the upper part of the connecting plate, there is a second through hole, and the second through hole and the first through hole are concentric holes. The bearing mounting seat 6 is fixedly connected to the middle position of the upper part of the connecting plate of the mounting bracket 8 through the bracket connecting bolt 7 passing through the first through hole and the second through hole; One section of the fixed bottom plate is welded to the connecting plate, and the other section is provided with two waist-shaped through holes horizontally arranged along the axis of the wire rope A.

[0015] Optionally, in the wire rope loading anti-twist device as described above, the connecting component includes: a long bolt 9, a pressing plate 10 provided with a through hole, a steel pipe 11, and a connecting plate 12;

[0016] The steel pipe 11 is arranged as a rectangular or square steel pipe. The two ends of the steel pipe 11 are welded and fixed to the columns at both ends of the test bench along the horizontal direction, and there are waist-shaped through holes in the direction perpendicular to the axis of the wire rope A. And mounting through holes are provided at the relative positions of the pressing plate 10, the fixed bottom plate, and the connecting plate 12;

[0017] The long bolt 9 passes through the through holes on the pressing plate 10 and the fixed bottom plate, the waist-shaped through hole of the steel pipe 11, and the through hole of the connecting plate 12 for fixed connection.

[0018] Optionally, in the wire rope loading anti-twist device as described above,

[0019] The loading joint 1 is arranged in a three-section structure: on one side end face, there is a protruding double fork ear, and through holes are arranged on the double fork ear for connecting with the end of the wire rope A through bolts or pins installed by clearance fit; on the other side end, there is a protruding threaded cylinder for threaded connection with the loading actuator through the threaded cylinder; in the middle part, there is a solid rectangular block, and four first threaded blind holes are arranged on the bottom end face of the middle part;

[0020] Wherein, the central axes of the double fork ear, the threaded cylinder and the solid rectangular block coincide, and coincide with the axis of the wire rope A.

[0021] Optionally, in the wire rope loading anti-twist device as described above,

[0022] In the structure of the anti-twist assembly 2, the joint connecting plate is a rectangular or square plate, and four mounting through holes corresponding to the four first threaded blind holes are arranged on the joint connecting plate, and each mounting through hole and its corresponding first threaded blind hole are concentric holes, so that the joint connecting plate is fixedly installed on the bottom end face of the solid rectangular block of the loading joint 1 through four fixing screws 3.

[0023] Optionally, in the wire rope loading anti-twist device as described above,

[0024] The four first threaded blind holes and the four mounting through holes are symmetrically arranged along the axis of the wire rope A, so that the four fixing screws 3 for fixedly installing the joint connecting plate are symmetrically installed along the axis of the wire rope A.

[0025] Optionally, in the wire rope loading anti-twist device as described above,

[0026] In the structure of the anti-twist assembly 2, the positioning plate is arranged on the bottom symmetry plane of the joint connecting plate, the symmetry plane of the positioning plate overlaps with the longitudinal symmetry plane of the wire rope A, and the two end faces of the positioning plate in contact with the two sets of anti-twist mechanisms are smooth and flat, so that the positioning plate can smoothly move in the gap formed by the symmetrically arranged bearings 5.

[0027] The beneficial technical effects of the present invention:

[0028] A wire rope loading anti-twist device provided by an embodiment of the present invention adds an anti-twist device to one end of the wire rope connecting the loading actuator. The structure of the anti-twist device is simple, the processing and installation operations are easy, and the anti-twist device is installed at one end far from the test piece, which can avoid direct contact with the test piece, thereby avoiding damage to the test piece. By adopting the anti-twist device provided by the embodiment of the present invention, not only can the anti-twist function of the loading wire rope be realized, but also the rotation of the wire rope during loading and the resulting additional torque can be effectively prevented, and the accurate transmission of the load along the axial direction of the wire rope can be realized. In addition, the structure of the wire rope loading anti-twist device provided by the present invention is coordinated, the installation is simple, the anti-twist function is stable, and the reliability of the test data is high. Description of the Drawings

[0029] The drawings are used to provide a further understanding of the technical solutions of the present invention, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solutions of the present invention, and do not constitute a limitation to the technical solutions of the present invention.

[0030] Figure 1 It is a schematic diagram of the overall structure of a centrifugal force separation type loading test device for a rigid rotor main blade central component provided by an embodiment of the present invention;

[0031] Figure 2 is Figure 1 A cross-sectional view of the A-A section of the centrifugal force separation type loading test device for the rigid rotor main blade central component provided by the shown embodiment;

[0032] Figure 3 is Figure 1 A side view of the centrifugal force separation type loading test device for the rigid rotor main blade central component provided by the shown embodiment. Detailed Embodiments

[0033] To make the purpose, technical solutions and advantages of the present invention clearer and more understandable, the embodiments of the present invention will be described in detail below with reference to the drawings. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily.

[0034] As already described in the above background art, in the existing solutions for preventing torque in wire rope loading tests, by adding additional loading actuators and measurement and control systems, problems such as high test costs and complex test methods are caused; or, in the existing method of adding an anti-twist device, due to the high requirements for processing and assembly accuracy of its installation position, and the problem of wear risk to the test piece during installation and testing.

[0035] In view of the above problems, an anti-twist device for wire rope loading is provided in an embodiment of the present invention. It should be noted that currently, there is no similar test device in China to the anti-twist device for wire rope loading proposed in the embodiment of the present invention, and such loading cannot be carried out; moreover, no relevant foreign public literature has been retrieved.

[0036] The present invention provides several specific embodiments that can be combined with each other. For the same or similar concepts or processes, they may not be repeated in some embodiments.

[0037] Figure 1 FIG. is a schematic diagram of the overall structure of a centrifugal force separation type loading test device for a rigid rotor main blade central member provided in an embodiment of the present invention. Figure 2 is Figure 1 A sectional view taken along line A-A of the centrifugal force separation type loading test device for a rigid rotor main blade central member provided in the shown embodiment. Figure 3 is Figure 1 A side view of the centrifugal force separation type loading test device for a rigid rotor main blade central member provided in the shown embodiment.

[0038] Referring to Figures 1 to 3 As shown, the basic structure of the anti-twist device for wire rope loading provided in an embodiment of the present invention may include the following components: a loading joint 1, an anti-twist assembly 2, a fixing screw 3, and two sets of anti-twist mechanisms fixedly installed on a test bench.

[0039] As Figure 1 and Figure 3 In the structure of the anti-twist device for wire rope loading shown, one end face of the loading joint 1 is connected to the wire rope A, and the opposite end face is connected to a loading actuator.

[0040] The anti-twist assembly 2 in an embodiment of the present invention includes: a joint connecting plate and a positioning plate arranged perpendicular to each other, forming a T-shaped structure. As Figure 1 shown in the T-shaped structure, the joint connecting plate is fixedly installed on the bottom end face of the loading joint 1 through the fixing screw 3, and the positioning plate is located in the longitudinal symmetry plane of the wire rope A, and anti-twist mechanisms are symmetrically arranged on both sides of the positioning plate.

[0041] At the end of each anti-twist mechanism in an embodiment of the present invention that contacts the positioning plate, a bearing 5 is provided. By using two symmetrically arranged anti-twist mechanisms, the positioning plate can be clamped in the gap formed by the symmetric bearings 5, so that the anti-twist assembly 2 moves along the axis of the wire rope A under the action of the loading force and is restricted from rotating along the axis of the wire rope A.

[0042] In an implementation manner of an embodiment of the present invention, the specific structure of each set of the anti-twist mechanisms may include: a bearing connecting bolt 4, a bearing 5, a bearing mounting seat 6, a bracket connecting bolt 7, and a mounting bracket 8.

[0043] As Figure 1 and Figure 2 shown in the structure of the anti-twist mechanism, the bearing mounting seat 6 is arranged in a U-shaped structure. Both ends of the symmetric sides of the U-shaped structure are arranged as double fork ears. A bearing 5 is installed in each double fork ear through a bearing connecting bolt 4. A first through hole is arranged at the middle connecting part of the U-shaped structure, and the inner spacing of the U-shaped structure is greater than the inscribed circle diameter of the hexagonal head of the bracket connecting bolt 7, so as to pass the bracket connecting bolt 7 through the first through hole to fixedly install the bearing mounting seat 6 on the mounting bracket 8.

[0044] It should be noted that the two mounting brackets 8 in the two sets of anti-twist mechanisms are symmetrically arranged along the symmetry plane of the positioning plate, and the two mounting brackets 8 are fixedly connected to the test bench through a connecting component.

[0045] In the specific implementation of the embodiment of the present invention, the mounting bracket 8 in one set of anti-twist mechanisms is arranged as an L-shaped welded bracket, as Figure 1 shown. The mounting bracket 8 may include: a connecting plate and a fixed bottom plate. A second through hole is arranged at the middle position of the upper part of the connecting plate, and the second through hole and the first through hole are concentric holes. The bearing mounting seat 6 is fixedly connected to the middle position of the upper part of the connecting plate of the mounting bracket 8 by passing the bracket connecting bolt 7 through the first through hole and the second through hole; one section of the fixed bottom plate is welded to the connecting plate, and the other section is provided with two waist-shaped through holes horizontally arranged along the axis of the wire rope A.

[0046] In one implementation manner of the embodiment of the present invention, as Figures 1 to 3 shown, the connecting component may include: a long bolt 9, a pressing plate 10 provided with a through hole, a steel pipe 11, and a connecting plate 12.

[0047] The steel pipe 11 in this implementation manner is arranged as a rectangular or square steel pipe. The two ends of the steel pipe 11 are fixedly welded to the columns at both ends of the test bench along the horizontal direction, and waist-shaped through holes are arranged in the direction perpendicular to the axis of the wire rope A, and mounting through holes are arranged at the relative positions of the pressing plate 10, the fixed bottom plate, and the connecting plate 12.

[0048] In addition, the long bolt 9 passes through the through holes on the pressing plate 10 and the fixed bottom plate, the waist-shaped through hole of the steel pipe 11, and the through hole of the connecting plate 12 for fixed connection.

[0049] In one implementation manner of the embodiment of the present invention, as Figure 3As shown in the figure, the loading joint 1 is set as a three-section structure: on one end face, there is a protruding double-fork ear, and through holes are provided on the double-fork ear for bolts or pins installed by clearance fit, so that the double-fork ear is connected to the end of the wire rope A; on the other end, there is a protruding threaded cylinder for threaded connection with the loading actuator through the threaded cylinder; in the middle part, there is a solid rectangular block, and four first threaded blind holes are provided on the bottom end face of the middle part.

[0050] It should be noted that in this implementation, the central axes of the double-fork ear, the threaded cylinder, and the solid rectangular block in the three-section structure of the loading joint 1 coincide, and coincide with the axis of the wire rope A.

[0051] Optionally, in the structure of the anti-twist assembly 2 of the embodiment of the present invention, the joint connecting plate is a rectangular or square plate, and four mounting through holes corresponding to the four first threaded blind holes are provided on the joint connecting plate, and each mounting through hole and its corresponding first threaded blind hole are concentric holes, so that the joint connecting plate is fixedly installed on the bottom end face of the solid rectangular block of the loading joint 1 through four fixing screws 3.

[0052] Furthermore, the above four first threaded blind holes and four mounting through holes are symmetrically arranged along the axis of the wire rope A, so that the four fixing screws 3 for fixedly installing the joint connecting plate are symmetrically installed along the axis of the wire rope A.

[0053] Based on the specific structure of the anti-twist assembly 2 in the embodiment of the present invention, in this anti-twist assembly 2, the positioning plate is arranged on the bottom symmetry plane of the joint connecting plate, the symmetry plane of the positioning plate overlaps with the longitudinal symmetry plane of the wire rope A, and the two end faces of the positioning plate in contact with the two sets of anti-twist mechanisms are smooth and flat, so that the positioning plate can smoothly move in the gap formed by the symmetrically arranged bearings 5.

[0054] The wire rope loading anti-twist device provided by the embodiment of the present invention adds an anti-twist device at one end of the wire rope connecting the loading actuator. The structure of the anti-twist device is simple, the processing and installation operations are simple, and the anti-twist device is installed at one end far from the test piece, which can avoid direct contact with the test piece, thereby avoiding damage to the test piece. By using the anti-twist device provided by the embodiment of the present invention, not only can the anti-twist function of the loading wire rope be realized, but also the rotation and the resulting additional torque generated during the wire rope loading can be effectively prevented, and the accurate transmission of the load along the axial direction of the wire rope can be realized. In addition, the wire rope loading anti-twist device provided by the present invention has a coordinated structure, simple installation, stable anti-twist function, and high reliability of test data.

[0055] The following details the specific implementation of the wire rope loading anti-twist device provided by the embodiment of the present invention through a specific embodiment.

[0056] Refer to Figures 1 to 3As shown, the wire rope loading anti-twist device provided by this specific embodiment is used to prevent the additional torque caused by the rotation of the wire rope during wire rope loading. The wire rope loading anti-twist device may include: a loading joint 1, an anti-twist plate 2, the anti-twist plate 2 may be of a T-shaped structure, fixing screws 3, bearing connection bolts 4, bearings 5, bearing mounting seats 6, bracket connection bolts 7, mounting brackets 8, long bolts 9, pressing plates 10, steel pipes 11, connecting plates 12, and wire rope A.

[0057] In this specific embodiment, one end of the loading joint 1 is connected to the wire rope A, the other end is connected to the loading actuator, and the lower end face is connected to the anti-twist plate 2 through the fixing screws 3. Bearings 5 are installed and fixed on both sides of the anti-twist plate 2 so that the anti-twist plate 2 can move along the axis of the wire rope A but cannot rotate along the axis of the wire rope A.

[0058] In this specific embodiment, the loading joint 1 is designed as a three-section structure, as Figure 3 shown. The left section extends a double fork ear, and through holes are provided on the double fork ear. The through holes are installed with bolts or pins in clearance fit for connecting the wire rope A; the right section extends a solid cylinder, and threads are provided on the cylinder for connecting the loading actuator through the threads; the middle section is a solid rectangular block, and four first threaded blind holes are provided on its lower end face. The central axes of the double fork ear, the solid cylinder, and the solid rectangular block coincide, which is the first axis (i.e., the axis of the wire rope), and passes through the central axis of the wire rope A.

[0059] In this specific embodiment, the anti-twist plate 2 is of a T-shaped structure and is divided into a joint connecting plate and a positioning plate that are perpendicular to each other: the joint connecting plate is a rectangular or square plate, and four mounting through holes are provided on the joint connecting plate. The mounting through holes are concentric with the first threaded blind holes, and the transverse plate is symmetrically installed on the lower end face of the loading joint 1 along the first axis through the fixing screws 3; the positioning plate is provided on the lower end face of the joint connecting plate, and its central axis is perpendicular to the first axis, and the left and right end faces are smooth and flat.

[0060] In this specific embodiment, the bearing mounting seat 6 is of a U-shaped structure: both sides of the U-shaped structure are double fork ears, and the bearings 5 are installed in the double fork ears through the bearing connection bolts 4; the inner spacing of the U-shaped structure is slightly larger than the inscribed circle diameter of the hexagonal head of the bracket connection bolt 7; a first through hole is provided at the bottom of the U-shaped structure.

[0061] In this specific embodiment, the steel pipe 11 is a rectangular or square steel pipe, and both ends are welded to the fixed test bench in the laboratory, and waist-shaped through holes are provided in the direction perpendicular to the first axis. The pressing plate 10, the mounting bracket 8, and the connecting plate 12 are fixedly connected through the waist-shaped through holes penetrated by the long bolts 9. The steel pipe 11 is along the horizontal direction, and both ends are welded to the columns at both ends of the test bench.

[0062] In this specific embodiment, the mounting bracket 8 is an L-shaped welded bracket, which is divided into a connecting plate and a fixed base plate: reinforcing ribs are welded on both sides of the connecting plate, and a second through hole is provided in the middle of the plate. The second through hole is concentric with the first through hole. The bearing mounting seat 6 and the mounting bracket 8 are connected and fixed by passing the bracket connecting bolt 7 through the first through hole and the second through hole; one end of the fixed base plate is welded to the connecting plate, and two waist-shaped through holes are symmetrically arranged along the central axis of the fixed base plate.

[0063] Although the disclosed embodiments of the present invention are as above, the content is only an embodiment adopted for the convenience of understanding the present invention and is not intended to limit the present invention. Any person skilled in the art within the scope of the present invention can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed by the present invention. However, the scope of patent protection of the present invention shall still be subject to the scope defined by the appended claims.

Claims

1. A wire rope loading anti-twist device, characterized in that, Comprising: a loading joint (1), an anti-twist assembly (2), a fixing screw (3), and two sets of anti-twist mechanisms fixedly installed on a test bench; wherein, one end face of the loading joint (1) is connected to a wire rope (A), and the opposite end face is connected to a loading actuator; the anti-twist assembly (2) includes: a joint connecting plate and a positioning plate arranged perpendicular to each other to form a T-shaped structure. The joint connecting plate is fixedly installed on the bottom end face of the loading joint (1) through the fixing screw (3), such that the positioning plate is located within the longitudinal symmetry plane of the wire rope (A). And on both sides of the positioning plate, anti-twist mechanisms are symmetrically arranged. At the end of each anti-twist mechanism in contact with the positioning plate, a bearing (5) is provided for clamping the positioning plate in the gap formed by the symmetrical bearings (5), so that the anti-twist assembly (2) moves along the axis of the wire rope (A) under the action of a loading force and is restricted from rotating along the axis of the wire rope (A).

2. The wire rope loading anti-twist device according to claim 1, wherein Each set of the anti-twist mechanism includes: a bearing connecting bolt (4), a bearing (5), a bearing mounting seat (6), a bracket connecting bolt (7), and a mounting bracket (8); wherein, the bearing mounting seat (6) is arranged in a U-shaped structure. At both end parts of the symmetric U-shaped structure, double fork ears are provided. In each double fork ear, a bearing (5) is installed through the bearing connecting bolt (4). A first through hole is provided at the middle connecting part of the U-shaped structure, and the inner spacing of the U-shaped structure is greater than the inscribed circle diameter of the hexagonal head of the bracket connecting bolt (7) for passing the bracket connecting bolt (7) through the first through hole to fixedly install the bearing mounting seat (6) on the mounting bracket (8); wherein, two mounting brackets (8) are symmetrically arranged along the symmetry plane of the positioning plate, and the two mounting brackets (8) are fixedly connected to the test bench through a connecting component.

3. The wire rope loading anti-twist device according to claim 2, wherein each mounting bracket (8) is an L-shaped welded bracket, including: a connecting plate and a fixed bottom plate. At the middle position of the upper part of the connecting plate, a second through hole is provided, and the second through hole and the first through hole are concentric holes. Through the bracket connecting bolt (7) passing through the first through hole and the second through hole, the bearing mounting seat (6) is fixedly connected to the middle position of the upper part of the connecting plate of the mounting bracket (8); One section of the fixed bottom plate is welded to the connecting plate, and the other section is provided with two waist-shaped through holes horizontally arranged along the axis of the wire rope (A).

4. The wire rope loading anti-twist device according to claim 3, characterized in that, The connecting component includes: a long bolt (9), a pressing plate (10) provided with a through hole, a steel pipe (11), and a connecting plate (12); the steel pipe (11) is arranged as a rectangular or square steel pipe. The two ends of the steel pipe (11) are welded and fixed to the columns at both ends of the test bench along the horizontal direction, and waist-shaped through holes are provided in the direction perpendicular to the axis of the wire rope (A). And mounting through holes are provided at the relative positions of the pressing plate (10), the fixed bottom plate, and the connecting plate (12); Fixed connection is carried out through the long bolt (9) passing through the through holes on the pressing plate (10) and the fixed bottom plate, the waist-shaped through hole of the steel pipe (11), and the through hole of the connecting plate (12).

5. The wire rope loading anti-twist device according to any one of claims 1 to 4, characterized in that the loading joint (1) is arranged in a three-section structure: on one side end face, there is a protruding double fork ear, and through holes are arranged on the double fork ear for installing bolts or pins through clearance fit to connect with the end of the wire rope (A); on the other side end, there is a protruding threaded cylinder for threaded connection with the loading actuator through the threaded cylinder; in the middle part, there is a solid rectangular block, and four first threaded blind holes are arranged on the bottom end face of the middle part; wherein, the central axes of the double fork ear, the threaded cylinder and the solid rectangular block coincide and coincide with the axis of the wire rope (A).

6. The wire rope loading anti-twist device according to claim 5, characterized in that in the structure of the anti-twist assembly (2), the joint connecting plate is a rectangular or square plate, and four mounting through holes corresponding to the four first threaded blind holes are arranged on the joint connecting plate, and each mounting through hole and its corresponding first threaded blind hole are concentric holes, so that the joint connecting plate is fixedly installed on the bottom end face of the solid rectangular block of the loading joint (1) through four fixing screws (3).

7. The wire rope loading anti-twist device according to claim 6, characterized in that the four first threaded blind holes and the four mounting through holes are symmetrically arranged along the axis of the wire rope (A), so that the four fixing screws (3) for fixedly installing the joint connecting plate are symmetrically installed along the axis of the wire rope (A).

8. The wire rope loading anti-twist device according to any one of claims 1 to 4, characterized in that in the structure of the anti-twist assembly (2), the positioning plate is arranged on the bottom symmetry plane of the joint connecting plate, the symmetry plane of the positioning plate overlaps with the longitudinal symmetry plane of the wire rope (A), and the two end faces of the positioning plate in contact with the two sets of anti-twist mechanisms are smooth and flat, so that the positioning plate can smoothly move in the gap formed by the symmetrically arranged bearings (5).

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