A steel wire rope defect positioning device

Abstract

The utility model discloses a kind of steel wire rope defect positioning devices, belong to steel wire rope detection technical field, including the upper installation cylinder and lower installation cylinder of relative hinged cooperation, the upper installation cylinder and lower installation cylinder inside one end are fixedly connected with magnetic flux leakage detection component, the upper installation cylinder outside is located at the one side of magnetic flux leakage detection component and is rotatably equipped with encoder component for measuring the movement of steel wire rope.The steel wire rope defect positioning device, the lower limit of steel wire rope is realized by the auxiliary wheel of fixed installation, the fixing of steel wire rope is realized by the jaw of mutual approaching during installation, the left and right limit of steel wire rope is realized by the jaw of mutual moving away during detection, cooperate elastic component and rotating arm, realize that encoding wheel is always adhered to steel wire rope, compared with existing device, avoid the problem that encoding wheel cannot be better adhered to steel wire rope, improve positioning effect.

Description

Technical Field

[0001] This utility model belongs to the field of wire rope detection technology, and in particular relates to a wire rope defect location device. Background Technology

[0002] Steel wire ropes are widely used in facilities such as mine hoists, port cranes, passenger and freight ropeways, elevators, suspension cable-stayed bridges, suspended roofs, and ship mooring lines. Due to the harsh working environment, steel wire ropes are susceptible to fatigue, corrosion, wear, and even breakage during use, all of which affect their safe operation. Therefore, the requirements for flaw detection of steel wire ropes are becoming increasingly stringent. Currently, the main magnetic detection method used in China for steel wire rope defects is magnetic flux leakage testing.

[0003] In existing wire rope defect location devices, the wire rope typically moves while the defect location device remains stationary. However, in actual use, the wire rope is prone to vibration when it moves, causing the coding wheel on the defect location device to not fit well against the wire rope and thus not rotate with the movement of the wire rope, affecting the positioning effect.

[0004] Therefore, we propose a wire rope defect location device to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to solve the problems in the prior art by proposing a wire rope defect positioning device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A wire rope defect locating device includes an upper mounting cylinder and a lower mounting cylinder hinged together. A magnetic flux leakage detection assembly is fixedly connected to one end of the inner side of each cylinder. An encoder assembly for measuring the movement of the wire rope is rotatably mounted on the outer side of the upper mounting cylinder, located next to the magnetic flux leakage detection assembly. The encoder assembly includes a rotating arm hinged to one end of the upper mounting cylinder. An encoding wheel is rotatably connected to the end of the rotating arm away from the upper mounting cylinder. A spring assembly for driving the rotating arm to rotate towards the lower mounting cylinder is also provided on the end face of the upper mounting cylinder. A fixed frame is fixedly connected to the end face of the lower mounting cylinder, located directly below the encoder assembly. An auxiliary wheel is rotatably connected to the end of the fixed frame away from the lower mounting cylinder. Grippers for engaging the wire rope are movably mounted on both sides of the center of the top surface of the fixed frame. A drive assembly for driving the two grippers to move in opposite directions is provided inside the fixed frame.

[0008] Preferably, the top surface of the fixed frame has two movable grooves on both sides, and the bottom surfaces of the two movable grooves have a common mounting groove. The driving assembly includes left and right rotary screws that are rotatably disposed in the mounting groove. The two grippers are respectively threaded onto the two ends of the left and right rotary screws, and the top of the grippers extends above the top surface of the fixed frame.

[0009] Preferably, symmetrical tension springs are fixedly connected to both sides of the rotating arm and both sides of the end face of the upper mounting cylinder, and the tension springs apply a vertical component force to the rotating arm in the direction of rotation towards the lower mounting cylinder.

[0010] Preferably, the upper mounting cylinder end face is fixedly connected with an upper limit block and a lower limit block to limit the rotation angle of the rotating arm.

[0011] Preferably, the auxiliary wheel is a U-shaped pulley, and the thickness of the auxiliary wheel is greater than the thickness of the coding wheel.

[0012] Preferably, the encoding wheel is located above and between the gripper and the auxiliary wheel.

[0013] In summary, the technical effects and advantages of this utility model are as follows: This wire rope defect positioning device achieves lower limit positioning of the wire rope through a fixedly installed auxiliary wheel, fixes the wire rope during installation through mutually close grippers, and limits the left and right sides of the wire rope during detection through mutually distant grippers. Combined with the elastic component and rotating arm, it ensures that the coding wheel always adheres to the wire rope. Compared with existing devices, this avoids the problem of the coding wheel not adhering well to the wire rope, thus improving the positioning effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional front view of the present invention;

[0016] Figure 3 This is a side view of the present invention;

[0017] Figure 4 This is a cross-sectional side view of the present invention;

[0018] Figure 5 This is a schematic diagram of the upper and lower mounting cylinders in this utility model when they are opened.

[0019] In the diagram: 1. Upper mounting cylinder; 2. Lower mounting cylinder; 3. Magnetic leakage detection component; 4. Rotating arm; 5. Encoding wheel; 6. Fixing frame; 7. Auxiliary wheel; 8. Gripper; 9. Moving slot; 10. Mounting slot; 11. Left and right rotary screws; 12. Upper limit block; 13. Lower limit block; 14. Tension spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-3 A wire rope defect location device includes an upper mounting cylinder 1 and a lower mounting cylinder 2 that are hinged together. A locking assembly is provided on the side of the upper mounting cylinder 1 and the lower mounting cylinder 2 facing away from the hinge. The locking assembly is existing technology; since such locking assemblies are common in the fields of wire rope defect location and magnetic flux leakage detection, a snap-fit ​​solution can be used, which will not be elaborated further. A magnetic flux leakage detection assembly 3 is fixedly connected to one end of the inner side of both the upper mounting cylinder 1 and the lower mounting cylinder 2. An encoder assembly for measuring the movement of the wire rope is rotatably mounted on the outer side of the upper mounting cylinder 1, located on the side of the magnetic flux leakage detection assembly 3. The magnetic flux leakage detection assembly 3 is existing technology and includes an excitation device and a magnetic sensor. The magnetic sensor detects magnetic flux leakage in the wire rope, thereby achieving the detection of wire rope defects. The encoder assembly includes a rotating arm 4 hinged to one end of the upper mounting cylinder 1. An encoder wheel 5 is rotatably connected to the end of the rotating arm 4 away from the upper mounting cylinder 1. A spring assembly is also provided on the end face of the upper mounting cylinder 1 to drive the rotating arm 4 to rotate towards the lower mounting cylinder 2. The encoder wheel 5 is existing technology, comprising a rotating wheel and a photoelectric encoder. The photoelectric encoder converts the mechanical geometric displacement on the rotating shaft of the rotating wheel into pulses or digital quantities through photoelectric conversion, thereby enabling the identification of the rotational speed of the rotating wheel and, consequently, the identification of the displacement and speed of the wire rope. A fixed frame 6 is fixedly connected to the end face of the lower mounting cylinder 2, located directly below the encoder assembly. An auxiliary wheel 7 is rotatably connected to the end of the fixed frame 6 away from the lower mounting cylinder 2. Grippers 8 that cooperate with the wire rope are movable on both sides of the center of the top surface of the fixed frame 6. A drive assembly is provided inside the fixed frame 6 to drive the two grippers 8 to move in opposite directions.

[0022] Reference Figure 1-3 In use, this wire rope defect locating device first rotates and separates the upper mounting cylinder 1 and the lower mounting cylinder 2, then moves the lower mounting cylinder 2 until the wire rope is secured in the recessed area in the middle of the magnetic flux leakage detection component 3 of the lower mounting cylinder 2. Figure 5 At this point, the bottom end of the wire rope is attached to the top of the auxiliary wheel 7. The drive assembly drives the two grippers 8 to approach each other until they are in contact and clamp the wire rope. Then, the upper mounting cylinder 1 is rotated to confine the wire rope between the upper mounting cylinder 1 and the lower mounting cylinder 2. During this process, the encoder wheel 5 first approaches and contacts the wire rope. The upper mounting cylinder 1 continues to rotate, and the rotating arm 4 rotates accordingly. The elastic assembly drives the rotating arm 4 to move and keeps the encoder wheel 5 in contact with the wire rope. After completion, the upper mounting cylinder 1 and the lower mounting cylinder 2 are locked. Then, the drive assembly drives the two grippers 8 to move away from each other, and the wire rope can begin to move. During the movement of the wire rope, the wire rope passes through the magnetic leakage detection assembly 3. The magnetic leakage signal generated at the defect on the wire rope is captured by the magnetic sensor in the magnetic leakage detection assembly 3. At this time, combined with the number of rotations of the encoder wheel 5, the distance of the defect from the initial detection position of the wire rope can be obtained, and the defect can be located. After the device scans and detects the entire wire rope, the location of all defects on the wire rope can be obtained.

[0023] Reference Figure 4 The top surface of the fixed frame 6 has two movable grooves 9 on either side of the center. The bottom surfaces of the two movable grooves 9 share a common mounting groove 10. The drive assembly includes left and right rotating screws 11 rotatably mounted within the mounting groove 10. Two grippers 8 are threaded onto both ends of the left and right rotating screws 11, with the tops of the grippers 8 extending above the top surface of the fixed frame 6. By rotating the left and right rotating screws, the two grippers 8 move in opposite directions, thus clamping or unlocking the wire rope. One end of the left and right rotating screws extends to the outside of the fixed frame 6 and is fixedly connected to a handle for easy operation. The left and right rotating screws 11 should be trapezoidal screws with a thread helix angle smaller than the static friction angle to achieve a self-locking function and prevent the grippers 8 from moving due to interference.

[0024] Reference Figure 1-3 Symmetrical tension springs 14 are fixedly connected to both sides of the rotating arm 4 and the two sides of the end face of the upper mounting cylinder 1, and the tension springs 14 apply a vertical component force to the rotating arm 4 in the direction of rotation towards the lower mounting cylinder 2. The symmetrical arrangement of the tension springs 14 can balance the force on the rotating arm 4, avoid the rotating arm 4 being subjected to a large component force perpendicular to the direction of rotation, and improve stability.

[0025] The upper mounting cylinder 1 has an upper limit block 12 and a lower limit block 13 fixedly connected to its end face to limit the rotation angle of the rotating arm 4. The upper limit block of the rotating arm 4 can prevent the rotating arm 4 from rotating in the opposite direction due to excessive upward rotation angle, which would cause the tension spring 14 to drive the rotating arm 4 to rotate in the opposite direction. The lower limit block of the rotating arm 4 can prevent the encoder wheel 5 from colliding with the auxiliary wheel 7 when the steel wire rope is not installed due to excessive downward rotation angle, and can also prevent problems such as installation difficulties, thus improving practicality.

[0026] Reference Figure 1-3 The auxiliary wheel 7 is a U-shaped pulley, and the thickness of the auxiliary wheel 7 is greater than that of the encoder wheel 5, so as to avoid the wire rope from shaking left and right and separating from the auxiliary wheel 7 and the encoder wheel 5, thus improving the stability of use.

[0027] The encoder wheel 5 is located above and between the gripper 8 and the auxiliary wheel 7. The encoder wheel 5 is positioned on the side of the auxiliary wheel 7 facing the gripper 8, so that when the wire rope vibrates downwards, the fixedly installed auxiliary wheel 7 can help stabilize the wire rope; while when the wire rope vibrates upwards, the tension spring 14 ensures that the encoder wheel 5 remains in contact with the wire rope, improving stability. The encoder wheel 5 is positioned on the side of the gripper 8 facing the auxiliary wheel 7 to improve space utilization and prevent the gripper 8 from interfering with the rotation of the encoder wheel 5.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wire rope defect locating device, comprising an upper mounting cylinder (1) and a lower mounting cylinder (2) hinged together, characterized in that, Both the upper mounting cylinder (1) and the lower mounting cylinder (2) are fixedly connected to one end of the inner side of a magnetic leakage detection assembly (3). The outer side of the upper mounting cylinder (1) is provided with an encoder assembly for measuring the movement of the wire rope, located on one side of the magnetic leakage detection assembly (3). The encoder assembly includes a rotating arm (4) hinged to one end of the upper mounting cylinder (1). The end of the rotating arm (4) away from the upper mounting cylinder (1) is rotatably connected to an encoding wheel (5). The end face of the upper mounting cylinder (1) is also provided with an elastic assembly that drives the rotating arm (4) to rotate towards the lower mounting cylinder (2). The end face of the lower mounting cylinder (2) is fixedly connected to a fixed frame (6) located directly below the encoder assembly. The end of the fixed frame (6) away from the lower mounting cylinder (2) is rotatably connected to an auxiliary wheel (7). The two sides of the top center of the fixed frame (6) are provided with grippers (8) that cooperate with the wire rope. The fixed frame (6) is provided with a drive assembly that drives the two grippers (8) to move in opposite directions.

2. The wire rope defect locating device according to claim 1, characterized in that, The top surface of the fixed frame (6) is provided with two movable grooves (9) on both sides. The bottom surfaces of the two movable grooves (9) are provided with a mounting groove (10). The driving component includes a left and right rotating screw (11) rotatably disposed in the mounting groove (10). The two grippers (8) are respectively threaded onto the two ends of the left and right rotating screws (11), and the top of the grippers (8) extends to the top surface of the fixed frame (6).

3. The wire rope defect locating device according to claim 1, characterized in that, Symmetrical tension springs (14) are fixedly connected to both sides of the rotating arm (4) and the end face of the upper mounting cylinder (1), and the tension springs (14) apply a vertical component force to the rotating arm (4) in the direction of rotation towards the lower mounting cylinder (2).

4. The wire rope defect locating device according to claim 3, characterized in that, The upper mounting cylinder (1) is fixedly connected to an upper limit block (12) and a lower limit block (13) that limit the rotation angle of the rotating arm (4).

5. A wire rope defect locating device according to claim 1, characterized in that, The auxiliary wheel (7) is a U-shaped pulley, and the thickness of the auxiliary wheel (7) is greater than the thickness of the coding wheel (5).

6. The wire rope defect locating device according to claim 1, characterized in that, The encoding wheel (5) is located above the gripper (8) and the auxiliary wheel (7).

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