Ultrasonic detection device for port hoisting steel wire rope

Abstract

The utility model discloses an ultrasonic detection device for a port hoisting steel wire rope, which comprises a fixed box and a detection component, the detection component comprises a movable box, an ultrasonic detector and a bent strip, the ultrasonic detector is arranged in the movable box, and a detection head of the ultrasonic detector extends out from the side wall of the movable box. The movable box is connected with a bent strip through a connecting plate on the same side edge as the detection head of the ultrasonic detector, and the concave surface of the bent strip faces the detection head of the ultrasonic detector; a retracting mechanism is arranged in the fixed box, the upper end of the moving box is connected with the output end of the retracting mechanism, and the retracting mechanism is used for driving the moving box to move up and down. According to the utility model, through the arrangement of the moving box, the ultrasonic detector and the bent strip in the detection component, the detection component can be sleeved on the rope by utilizing the distance between the bent strip and the detection head of the ultrasonic detector, and the up-and-down movement of the detection component can be controlled by utilizing the retracting and releasing mechanism in the fixed box; therefore, the ultrasonic detector is used for detecting along the rope.

Description

Technical Field

[0001] The utility model relates to the technical field of rope detection devices, in particular to an ultrasonic detection device for a steel wire rope used for port hoisting. Background Art

[0002] The steel wire ropes used for port hoisting carry important goods and equipment, such as containers, mechanical equipment, etc. Therefore, the safety of the steel wire ropes must be ensured. During daily operations, testing the steel wire ropes used for port hoisting can help discover potential wear, breakage, deformation and other problems of the ropes, so that the ropes can be replaced or repaired in time to ensure the safety and reliability of the lifting operation.

[0003] In the prior art, when inspecting steel wire ropes for port lifting, force sensors or angular displacement sensors are usually installed to monitor the use of the steel wire ropes. The force or displacement of the steel wire ropes is detected in real time and sent to a controller to obtain whether the steel wire ropes are worn, broken, deformed, etc. However, in actual use, when the steel wire ropes are subjected to heavy objects, the force conditions will change or the ropes will be offset due to the force, which may cause the detection data of the steel wire ropes to be easily deviated by the sensors, making the use inconvenient.

[0004] Therefore, there is an urgent need for an ultrasonic detection device for steel wire ropes used for port hoisting to solve the problem that measurement deviations are easily generated when detecting steel wire ropes through sensors. Utility Model Content

[0005] The utility model aims at the deficiencies in the prior art and provides an ultrasonic detection device for a steel wire rope used for port hoisting, so as to solve the problem that measurement deviation is easy to occur when the steel wire rope is detected by a sensor.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An ultrasonic detection device for a steel wire rope used for port lifting, characterized in that it comprises a fixed box and a detection component, the detection component comprises a moving box, an ultrasonic detector and a bent bar, the moving box is provided with an ultrasonic detector inside, the detection head of the ultrasonic detector extends from the side wall of the moving box, the moving box is connected to a bent bar through a connecting plate on the same side as the detection head of the ultrasonic detector, the concave surface of the bent bar is arranged toward the detection head of the ultrasonic detector, and a space is reserved between the bent bar and the detection head of the ultrasonic detector for the rope to pass up and down; a retracting mechanism is provided inside the fixed box, the upper end of the moving box is connected to the output end of the retracting mechanism and is suspended below the fixed box, and the retracting mechanism is used to drive the moving box to move up and down.

[0008] To optimize the above technical solutions, the specific measures taken also include:

[0009] Furthermore, the detection component also includes a U-shaped turn lock, and a U-shaped turn lock is provided at the top of the movable box and on the same side as the detection head of the ultrasonic detector through a connecting plate, and a bent bar is connected through the bottom end of the U-shaped turn lock, and the U-shaped turn lock located at the upper end of the bent bar has space for the rope to pass through.

[0010] Furthermore, the detection component also includes a cylinder and a mounting tube. The cylinder is laterally installed inside the movable box, the mounting tube is installed at the movable end of the cylinder, and the mounting tube extends through one side of the movable box and is slidably connected to the side wall of the movable box. The ultrasonic detector is installed inside the mounting tube, and the detection head of the ultrasonic detector faces the concave surface of the bent bar.

[0011] Furthermore, the retracting and releasing mechanism includes a motor, a rotating shaft and a cable. The bottom end of the fixed box is provided with a through bottom groove, the interior of the fixed box is movably equipped with a rotating shaft, the outer surface of the fixed box is equipped with a motor, the output end of the motor is connected to the rotating shaft for driving the rotating shaft to rotate, the outer surface of the rotating shaft is wrapped with a cable, and one end of the cable passes through the bottom groove and is connected to the movable box.

[0012] Furthermore, the bottom groove is strip-shaped, and the long side direction is consistent with the axial direction of the rotating shaft.

[0013] Furthermore, it also includes a reminder component, which includes an external frame installed on the outer surface of the fixed box, a single-chip microcomputer and a buzzer are installed inside the external frame, the ultrasonic detector is electrically connected to the single-chip microcomputer, and the single-chip microcomputer is electrically connected to the buzzer.

[0014] Furthermore, a dustproof net is installed on the outer side of the external frame.

[0015] Furthermore, the cable is an electric wire, a channel connected to the outer wall of the fixed box is opened inside the rotating shaft, and an opening connected to the channel is opened on the outer surface of the rotating shaft, one end of the electric wire extends from the bottom groove and is electrically connected to the ultrasonic detector in the movable box, and the other end of the electric wire is wound around the rotating shaft, passes through the channel from the opening, and after passing through the channel, is electrically connected to the single-chip computer in the external frame.

[0016] Furthermore, a rubber ring is installed inside the opening.

[0017] Furthermore, it also includes a fixing component, which includes a top plate fixedly mounted on the upper end of the fixing box and an inner rotating shaft movably mounted on the side wall of the top plate, an outer rotating cylinder is movably mounted on the outer side of the inner rotating shaft, and one end of the outer rotating cylinder is movably mounted on the side wall of the top plate, a connecting strip is installed on the outer side of the outer rotating cylinder and the inner rotating shaft, and a clamping bent strip is provided on the connecting strip, the arc-shaped opening ends of the two clamping bent strips are arranged opposite to each other, and the middle ends of the two connecting strips are provided with threaded holes, which are fixedly connected by bolts.

[0018] The beneficial effects of the utility model are:

[0019] The utility model can constrain the rope between the bent bar and the detection head of the ultrasonic detector by coordinating the fixed box and the detection component and utilizing the settings of the movable box, the ultrasonic detector and the bent bar in the detection component, that is, the detection component is sleeved on the rope using the spacing between the bent bar and the detection head of the ultrasonic detector. When in use, the up and down movement of the detection component can be controlled by utilizing the retracting and extending mechanism in the fixed box, thereby achieving the effect of detecting along the rope using the ultrasonic detector, and can effectively detect and survey whether the rope is worn, broken, deformed, etc. at a close distance. At the same time, whether the rope is in a working state does not affect the detection operation of the device, thereby ensuring the accuracy and work efficiency of the detection.

[0020] The utility model is operated by a motor. When the rotating shaft rotates, the detection component moves down along the rope, the cylinder is extended, and the rope is constrained by the installation tube and the ultrasonic detector. The ultrasonic detector performs ultrasonic detection on the rope, and the ultrasonic detector transmits the ultrasonic detection data to the single-chip microcomputer through the wire. When the detection data is abnormal, the single-chip microcomputer controls the buzzer to operate, and the buzzer is used to remind the operator.

[0021] The utility model uses two groups of clamping bent bars to circle the hanging object suspended by the rope, the two groups of connecting bars are fitted together, and bolts are threadedly connected in the middle of the two groups of connecting bars to fix the position of the connecting bars. The ultrasonic detection structure is located on one side of the rope, which is convenient for the ultrasonic detector to perform ultrasonic detection on the rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of an ultrasonic detection device for a steel wire rope used for port hoisting proposed by the utility model;

[0023] Figure 2 This is a structural schematic diagram of a fixing box and a reminder component of an ultrasonic detection device for a steel wire rope for port hoisting proposed by the utility model;

[0024] Figure 3 This is a schematic structural diagram of a fixing component of an ultrasonic detection device for a steel wire rope for port hoisting proposed by the utility model;

[0025] Figure 4 The utility model is a schematic structural diagram of a detection component of an ultrasonic detection device for a steel wire rope for port hoisting.

[0026] 1. Ultrasonic detection structure; 11. Fixed box; 111. Bottom groove; 112. Motor; 113. Rotating shaft; 114. Wire; 115. Opening; 116. Rubber ring; 12. Fixed member; 121. Top plate; 122. Outer rotating cylinder; 123. Inner rotating shaft; 124. Connecting strip; 125. Clamping bent strip; 126. Bolt; 13. Reminding member; 131. External frame; 132. Dustproof net; 133. Single chip microcomputer; 134. Buzzer; 14. Detection member; 141. Moving box; 142. U-shaped turn lock; 143. Cylinder; 144. Mounting tube; 145. Bend strip; 146. Ultrasonic detector. DETAILED DESCRIPTION

[0027] The utility model is described in detail below with reference to the accompanying drawings.

[0028] As attached Figure 1 and attached Figure 4 As shown, an ultrasonic detection device for a steel wire rope for port lifting according to an embodiment of the utility model comprises an ultrasonic detection structure 1, wherein the ultrasonic detection structure 1 comprises a fixed box 11 and a detection component 14, wherein the detection component 14 comprises a movable box 141, an ultrasonic detector 146 and a bent bar 145, wherein an ultrasonic detector 146 is arranged inside the movable box 141, wherein a detection head of the ultrasonic detector 146 extends from a side wall of the movable box 141, wherein the movable box 141 is connected with a bent bar 145 through a connecting plate on the same side as the detection head of the ultrasonic detector 146, wherein a concave surface of the bent bar 145 is arranged toward the detection head of the ultrasonic detector 146, and a space is reserved between the bent bar 145 and the detection head of the ultrasonic detector 146 for the rope to pass through up and down; wherein a retracting and releasing mechanism is arranged inside the fixed box 11, wherein the upper end of the movable box 141 is connected to the output end of the retracting and releasing mechanism, and is suspended below the fixed box 11, and the retracting and releasing mechanism is used for driving the movable box 141 to move up and down.

[0029] The utility model can constrain the rope between the bending bar 145 and the detection head of the ultrasonic detector 146 by coordinating the fixed box 11 and the detection component 14, and utilizing the settings of the movable box 141, the ultrasonic detector 146 and the bending bar 145 in the detection component 14, that is, the detection component 14 is sleeved on the rope using the spacing between the bending bar 145 and the detection head of the ultrasonic detector 146. When in use, the retracting and extending mechanism in the fixed box 11 can be used to control the up and down movement of the detection component 14, thereby achieving the effect of using the ultrasonic detector 146 to detect along the rope, and can effectively detect and investigate whether the rope is worn, broken, deformed, etc. at a close distance. At the same time, whether the rope is in working use does not affect the detection operation of the device, thereby ensuring the accuracy and work efficiency of the detection.

[0030] In another specific embodiment, the detection component 14 further includes a U-shaped turn lock 142. The U-shaped turn lock 142 is provided at the top of the mobile box 141 and on the same side as the detection head of the ultrasonic detector 146 through a connecting plate, and a curved bar 145 is connected to the bottom end of the U-shaped turn lock 142. The U-shaped turn lock 142 located at the upper end of the curved bar 145 has a space for the rope to pass through. In this embodiment, when one end of the U-shaped turn lock 142 is stretched, the other end is unlocked and separated, and the stretchable end is rotated to quickly assemble the curved bar 145 and the rope. After assembly, the other end is re-locked to limit the rope between the curved bar 145 and the detection head of the ultrasonic detector 146, so that the detection component 14 and the rope can be easily installed detachably.

[0031] In another specific embodiment, the detection component 14 further includes a cylinder 143 and a mounting tube 144. The cylinder 143 is transversely mounted inside the moving box 141. The mounting tube 144 is mounted on the moving end of the cylinder 143. The mounting tube 144 extends through one side of the moving box 141 and is slidably connected to the side wall of the moving box 141. An ultrasonic detector 146 is mounted inside the mounting tube 144, and the detection head of the ultrasonic detector 146 faces the concave surface of the curved strip 145. In this way, when in use, the mounting tube 144 can be driven by the cylinder 143 to drive the ultrasonic detector 146 to extend and retract forward and backward as needed, thereby realizing the contraction protection of the ultrasonic detector 146 when it is not needed, and, when it is necessary to locate the position of special situations such as rope wear, breakage, deformation, etc., the ultrasonic detector 146 can be driven by driving the mounting tube 144 to extend forward to cooperate with the curved strip 145 to clamp the rope.

[0032] As attached Figure 2 As shown, in another specific embodiment, the retractable mechanism includes a motor 112, a rotating shaft 113 and a cable. The bottom end of the fixed box 11 is provided with a through bottom groove 111, the rotating shaft 113 is movably installed inside the fixed box 11, the outer surface of the fixed box 11 is installed with a motor 112, the output end of the motor 112 is connected to the rotating shaft 113, and is used to drive the rotating shaft 113 to rotate. The outer surface of the rotating shaft 113 is wound with a cable, and one end of the cable passes through the bottom groove 111 and is connected to the moving box 141. In this way, when in use, the rotating shaft 113 can be driven to rotate by the motor 112 to realize the retractable and retractable cable, thereby realizing the lifting and lowering adjustment of the moving box 141.

[0033] The bottom groove 111 is strip-shaped, and the long side direction is consistent with the axial direction of the rotating shaft 113. In this way, it is convenient to retract and release the cable along the axial direction of the rotating shaft 113. In this embodiment, a groove track can also be provided on the rotating shaft 113 as needed to constrain the retraction and release of the cable.

[0034] In a further embodiment, a reminder component 13 is further included, and the reminder component 13 includes an external frame 131 installed on the outer surface of the fixed box 11, and a single-chip computer 133 and a buzzer 134 are installed inside the external frame 131. The ultrasonic detector 146 is electrically connected to the single-chip computer 133, and the single-chip computer 133 is electrically connected to the buzzer 134. In this way, the detected data can be uploaded to the single-chip computer 133 through the ultrasonic detector 146, and then the single-chip computer 133 controls the buzzer 134 to warn according to the obtained data.

[0035] A dust screen 132 is installed on the outside of the external frame 131. In this way, the structure inside the external frame 131 can be effectively protected and heat dissipated.

[0036] Among them, in a further embodiment, the cable adopts an electric wire 114, and a channel connected to the outer wall of the fixed box 11 is opened inside the rotating shaft 113 along the central axis, and an opening 115 connected to the channel is opened on the outer surface of the rotating shaft 113. One end of the electric wire 114 extends from the bottom groove 111 and is electrically connected to the ultrasonic detector 146 in the mobile box 141. After the other end of the electric wire 114 is wound on the rotating shaft 113, it passes through the opening 115 into the channel, and after passing through the channel, it is electrically connected to the single-chip computer 133 in the external frame 131. In this way, the connection stability between the devices can be ensured by the electric wire 114, while ensuring the transmission of the signal and simplifying the structure. In this embodiment, the internal space of the channel is sufficient to ensure the curling phenomenon of the electric wire 114 during use.

[0037] A rubber ring 116 is installed inside the opening 115. Thus, the rubber ring 116 protects the outer surface of the electric wire 114 during the movement.

[0038] As attached Figure 3As shown, in another specific embodiment, it also includes a fixed component 12, the fixed component 12 includes a top plate 121 fixedly mounted on the upper end of the fixed box 11 and an inner rotating shaft 123 movably mounted on the side wall of the top plate 121, an outer rotating cylinder 122 is movably mounted on the outer side of the inner rotating shaft 123, and one end of the outer rotating cylinder 122 is movably mounted on the side wall of the top plate 121, a connecting strip 124 is installed on the outer side of the outer rotating cylinder 122 and the inner rotating shaft 123, and a clamping bent strip 125 is provided on the connecting strip 124, the arc-shaped opening ends of the two clamping bent strips 125 are arranged opposite to each other, and the middle ends of the two connecting strips 124 are provided with threaded holes, which are fixedly connected by bolts 126. In this embodiment, the length of the inner rotating shaft 123 can be longer than that of the outer rotating drum 122, so as to facilitate the installation of the connecting strip 124 and the clamping bent strip 125, and the two connecting strips 124 respectively connected to the inner rotating shaft 123 and the outer rotating drum 122 can be arranged on the same plane by adding an extension block. In this embodiment, the fixing member 12 can be provided with at least two groups to ensure the stability of the fixing. When the fixing member 12 is in use, the two clamping bent strips 125 of each group are clamped on other structures located at the output end of the rope to achieve relative fixation of the device.

[0039] A specific implementation of the utility model includes an ultrasonic detection structure 1, which includes a fixed box 11 and a fixed component 12 installed on the top of the fixed box 11. The fixed component 12 is provided with two groups, a reminder component 13 is installed on one side of the fixed box 11, and a detection component 14 is installed below the fixed box 11.

[0040] The detection component 14 includes a moving box 141 and a U-shaped turn lock 142 installed on one side of the top of the moving box 141, a bent bar 145 is installed at the bottom end of the U-shaped turn lock 142, a cylinder 143 is installed horizontally inside the moving box 141, a mounting tube 144 is installed at the moving end of the cylinder 143, and the mounting tube 144 passes through one side of the moving box 141, an ultrasonic detector 146 is installed inside the mounting tube 144, and the detection head of the ultrasonic detector 146 faces one side of the bent bar 145, the U-shaped turn lock 142 is used to insert the detection component 14 on one side of the rope, the cylinder 143 pushes the ultrasonic detector 146 to one side of the bent bar 145, and the rope is clamped by the ultrasonic detector 146 and the bent bar 145.

[0041] A bottom groove 111 is provided at the bottom end of the fixed box 11, a rotating shaft 113 is movably installed inside the fixed box 11, a motor 112 is installed on the outer surface of the fixed box 11, the rotating shaft 113 is installed at the output end of the motor 112, an electric wire 114 is wound around the outer surface of the rotating shaft 113, and one end of the electric wire 114 is installed inside the detection component 14. The detection component 14 is pulled by the electric wire 114, and the data detected by the ultrasonic detector 146 can also be transmitted.

[0042] The reminder component 13 includes an external frame 131 installed on the outer surface of the fixed box 11, and a single-chip computer 133 and a buzzer 134 are installed inside the external frame 131. One end of the wire 114 is connected to one end of the single-chip computer 133 to facilitate the transmission of the data detected by the ultrasonic detector 146 to the single-chip computer 133.

[0043] An opening 115 is formed through the outer surface of the rotating shaft 113 , a rubber ring 116 is installed inside the opening 115 , a dustproof net 132 is installed on the outer side of the external frame 131 for filtering impurities in the air entering the internal part of the external frame 131 , and the rubber ring 116 is provided for protecting the wires 114 .

[0044] In this embodiment, the fixing box 11 is hung on one side of the rope, the U-shaped turn lock 142 is opened, the rope is put into the lock hole of the U-shaped turn lock 142, the curved strip 145 is on one side of the rope, the U-shaped turn lock 142 is locked, the detection member 14 is placed on one side of the rope, the motor 112 is operated, and when the rotating shaft 113 rotates, the wire 114 wound on the outer surface of the rotating shaft 113 is rotated out, so that the detection member 14 moves down along the rope, the cylinder 143 is extended, and the installation cylinder 144 and the ultrasonic detector 146 move toward one side of the curved strip 145, and the installation cylinder 144 is used to install the ultrasonic detector 146. The ultrasonic detector 146 squeezes the rope, and the bent bar 145 is set to limit the movement of the rope, so that the ultrasonic detector 146 can perform ultrasonic detection on the rope. The ultrasonic detector 146 transmits the ultrasonic detection data to the single-chip computer 133 through the wire 114. When the detection data is abnormal, the single-chip computer 133 controls the buzzer 134 to operate, and the buzzer 134 is used to remind the operator. The dustproof net 132 is set to keep the inside of the external frame 131 clean. Before the detection component 14 moves downward, the cylinder 143 contracts to remove the clamping force on the rope, and one end of the wire 114 is inserted into the inside of the opening 115. The wire 114 is connected to one end of the single-chip computer 133. The rubber ring 116 inside the opening 115 protects the outer surface of the wire 114, and the connection of the wire 114 can be maintained when the shaft 113 rotates.

[0045] Another specific embodiment of the utility model, wherein the fixed component 12 includes a top plate 121 and an inner rotating shaft 123 movably installed on one side of the top plate 121, an outer rotating cylinder 122 is movably installed on the outer side of the inner rotating shaft 123, and one end of the outer rotating cylinder 122 is movably installed on one side of the top plate 121, and connecting strips 124 and clamping bent strips 125 are installed on the outer sides of the outer rotating cylinder 122 and the inner rotating shaft 123, and the two groups of connecting strips 124 and the clamping bent strips 125 are symmetrically installed about the vertical center line of the top plate 121.

[0046] The middle end of the connecting strip 124 is threadedly connected with a bolt 126 , and the threaded end of the bolt 126 is threadedly connected to the inside of the two groups of connecting strips 124 to fix the fixing component 12 .

[0047] In this embodiment: the connecting strips 124 and the clamping bent strips 125 respectively installed on the outer surfaces of the outer rotating drum 122 and the inner rotating shaft 123 are in an open state, and two groups of clamping bent strips 125 are used to circle the hanging objects suspended by the rope, and the two groups of connecting strips 124 are fitted together, and the bolts 126 are threadedly connected in the middle of the two groups of connecting strips 124 to fix the position of the connecting strips 124, and the ultrasonic detection structure 1 is on one side of the rope, which is convenient for the ultrasonic detector 146 to perform ultrasonic detection on the rope.

[0048] Working principle: the fixed box 11 is suspended on one side of the rope, the motor 112 is in operation, and when the rotating shaft 113 rotates, the detection component 14 moves down along the rope, the cylinder 143 is extended, and the installation tube 144 and the ultrasonic detector 146 are used to squeeze the rope. The ultrasonic detector 146 performs ultrasonic detection on the rope, and the ultrasonic detector 146 transmits the ultrasonic detection data to the single-chip computer 133 through the wire 114. When the detection data is abnormal, the single-chip computer 133 controls the buzzer 134 to operate, and the buzzer 134 is used to remind the operator.

[0049] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back", etc. used in the utility model are only for the convenience of description and are not used to limit the scope of implementation of the utility model. Changes or adjustments in their relative relationships should be regarded as the scope of implementation of the utility model without substantially changing the technical content.

[0050] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims

1. An ultrasonic detection device for a steel wire rope for port hoisting, characterized in that: The invention comprises a fixed box (11) and a detection component (14), wherein the detection component (14) comprises a movable box (141), an ultrasonic detector (146) and a bent bar (145); an ultrasonic detector (146) is arranged inside the movable box (141); a detection head of the ultrasonic detector (146) extends out from a side wall of the movable box (141); the movable box (141) is connected to a bent bar (145) on the same side as the detection head of the ultrasonic detector (146) via a connecting plate; a concave surface of the bent bar (145) is arranged toward the detection head of the ultrasonic detector (146); a space is reserved between the bent bar (145) and the detection head of the ultrasonic detector (146) for a rope to pass through upward and downward; a retracting mechanism is arranged inside the movable box (11); the upper end of the movable box (141) is connected to the output end of the retracting mechanism and is suspended below the fixed box (11); the retracting mechanism is used to drive the movable box (141) to move upward and downward.

2. The ultrasonic detection device for a steel wire rope for port hoisting according to claim 1 is characterized in that: The detection component (14) further comprises a U-shaped turn lock (142); a U-shaped turn lock (142) is provided at the top of the moving box (141) and on the same side as the detection head of the ultrasonic detector (146) via a connecting plate; a bent bar (145) is connected via the bottom end of the U-shaped turn lock (142); and a space is provided at the upper end of the U-shaped turn lock (142) for a rope to pass through.

3. The ultrasonic detection device for a steel wire rope for port hoisting according to claim 1 is characterized in that: The detection component (14) further comprises a cylinder (143) and a mounting tube (144); the cylinder (143) is transversely mounted inside the movable box (141); the mounting tube (144) is mounted on the movable end of the cylinder (143); the mounting tube (144) extends through one side of the movable box (141) and is slidably connected to the side wall of the movable box (141); the ultrasonic detector (146) is mounted inside the mounting tube (144); and the detection head of the ultrasonic detector (146) faces the concave surface of the bent strip (145).

4. The ultrasonic detection device for a steel wire rope for port hoisting according to claim 1 is characterized in that: The retractable mechanism comprises a motor (112), a rotating shaft (113) and a cable. A bottom groove (111) is provided at the bottom end of the fixed box (11). The rotating shaft (113) is movably installed inside the fixed box (11). The motor (112) is installed on the outer surface of the fixed box (11). The output end of the motor (112) is connected to the rotating shaft (113) for driving the rotating shaft (113) to rotate. The outer surface of the rotating shaft (113) is wound with a cable, and one end of the cable passes through the bottom groove (111) and is connected to the movable box (141).

5. The ultrasonic detection device for a steel wire rope for port hoisting according to claim 4, characterized in that: The bottom groove (111) is strip-shaped, and the long side direction is consistent with the axial direction of the rotating shaft (113).

6. The ultrasonic detection device for a steel wire rope for port hoisting according to claim 4, characterized in that: The invention also comprises a reminder component (13), the reminder component (13) comprising an external frame (131) mounted on the outer surface of the fixed box (11), a single-chip computer (133) and a buzzer (134) being mounted inside the external frame (131), the ultrasonic detector (146) being electrically connected to the single-chip computer (133), and the single-chip computer (133) being electrically connected to the buzzer (134).

7. The ultrasonic detection device for a steel wire rope for port hoisting according to claim 6, characterized in that: A dustproof net (132) is installed on the outer side of the external frame (131).

8. The ultrasonic detection device for a steel wire rope for port hoisting according to claim 6, characterized in that: The cable is an electric wire (114); a channel connected to the outer wall of the fixed box (11) is provided inside the rotating shaft (113); an opening (115) connected to the channel is provided on the outer surface of the rotating shaft (113); one end of the electric wire (114) extends from the bottom groove (111) and is electrically connected to an ultrasonic detector (146) in the movable box (141); the other end of the electric wire (114) is wound around the rotating shaft (113), passes through the opening (115) into the channel, and passes out of the channel to be electrically connected to the single-chip computer (133) in the external frame (131).

9. The ultrasonic detection device for a steel wire rope for port hoisting according to claim 8, characterized in that: A rubber ring (116) is installed inside the opening (115).

10. The ultrasonic detection device for a steel wire rope for port hoisting according to claim 1, characterized in that: The fixed box (11) further comprises a fixed component (12), wherein the fixed component (12) comprises a top plate (121) fixedly mounted on the upper end of the fixed box (11) and an inner rotating shaft (123) movably mounted on the side wall of the top plate (121); an outer rotating cylinder (122) is movably mounted on the outer side of the inner rotating shaft (123), and one end of the outer rotating cylinder (122) is movably mounted on the side wall of the top plate (121); a connecting strip (124) is mounted on the outer side of each of the outer rotating cylinder (122) and the inner rotating shaft (123); and a clamping bent strip (125) is provided on each of the connecting strips (124); arc-shaped opening ends of the two clamping bent strips (125) are arranged opposite to each other; and threaded holes are provided at the middle ends of the two connecting strips (124) and are fixedly connected by bolts (126).

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