Static detection device for a truss hoisting apparatus

Abstract

This utility model relates to the field of truss crane maintenance technology, specifically to a static inspection device for truss crane equipment. It includes an ultrasonic flaw detector and a probe assembly. In this utility model, after aligning the nozzle with the weld area, pressing the trigger along the extension rod axis moves the second rack towards the limit switch, simultaneously driving the movable frame to move the nozzle and cleaning assembly towards the distal end of the probe body's detection end. When the second rack contacts and triggers the limit switch, the feed pump delivers coupling agent to the nozzle, precisely spraying the coupling agent onto the weld. Simultaneously, a servo motor drives the rotating plate and sponge cloth to rotate, wiping the probe's detection end surface, effectively removing residual coupling agent from the probe's detection end surface during the inspection process. This achieves synchronized coupling agent spraying and probe cleaning, reducing the safety risks and implementation difficulties associated with alternating multi-process operations in high-altitude environments.

Description

Technical Field

[0001] This utility model relates to the field of truss crane maintenance technology, and more specifically, to a static detection device for truss crane equipment. Background Technology

[0002] A truss crane is a lifting device that uses a truss structure. Assessing the structural safety and integrity of a truss crane in a static state to ensure that it meets design specifications and safety standards is an important task. Specific inspection contents include: checking for cracks, loosening or corrosion in weld points, bolt connections, etc., to ensure that the connections are firm, and using non-destructive testing (NDT) methods (such as ultrasonic and magnetic particle testing) to evaluate the quality of welds.

[0003] In existing technologies, when using ultrasonic flaw detectors for weld inspection, a coupling agent needs to be applied to the smooth weld surface to ensure effective contact between the probe and the workpiece. After the probe's detection end contacts the workpiece, coupling agent will adhere to the probe. After the inspection is completed, the residual coupling agent on the probe's detection end must be removed in a timely manner to avoid affecting the accuracy of subsequent inspections due to the adhesion of coupling agent. Due to the large structure of gantry cranes, the inspection of some high-altitude welds requires operators to perform suspended high-altitude operations, and their working conditions are unstable. Under such conditions, operations such as applying coupling agent and cleaning the probe's detection end involve multiple steps, which not only increases the difficulty of implementing high-altitude operations, but also significantly increases safety risks due to limited operating space and complex process connections. Utility Model Content

[0004] The purpose of this invention is to provide a static testing device for truss lifting equipment to solve the problems mentioned in the background art.

[0005] When operators perform suspended high-altitude operations, the processes of applying coupling agent and cleaning the probe detection end involve multiple steps, making the operations difficult and posing significant safety risks.

[0006] To address the above problems, the present invention aims to provide a static inspection device for truss lifting equipment, comprising an ultrasonic flaw detector and a probe assembly. The probe assembly includes a probe body, and the ultrasonic flaw detector is electrically connected to the probe body via a cable. A handle is fixed on the probe body at a position away from the detection end. A movable frame is horizontally arranged on the side of the handle near the detection end of the probe body. The movable frame is slidably mounted on the probe body. A nozzle is fixed at the end of the movable frame near the detection end of the probe body. A cleaning component is provided on one side of the nozzle. A displacement mechanism is provided on the handle for driving the movable frame to move horizontally. When the nozzle moves with the movable frame to the far end of the detection end of the probe body, the cleaning component cleans the detection end of the probe body.

[0007] As a further improvement to this technical solution, the displacement mechanism includes a mounting groove opened on the side of the handle near the probe body. A gear is rotatably arranged inside the mounting groove. A first rack and a second rack are respectively meshed on the upper and lower sides of the gear. The first rack is fixed to the end of the movable frame away from the nozzle. One end of the second rack extends to the outside of the mounting groove and is fixed with a trigger.

[0008] As a further improvement to this technical solution, the displacement mechanism also includes an extension rod horizontally fixed to the side of the trigger near the grip. An inner groove is provided on the side of the grip near the trigger, corresponding to the position of the extension rod. The other end of the extension rod slides through the side wall of the inner groove and is threaded with a nut. A spring is provided between the side wall of the inner groove and the trigger, and is sleeved on the extension rod. The spring pushes the trigger away from the grip.

[0009] As a further improvement to this technical solution, the cleaning component includes a servo motor fixedly installed on one side of the movable frame. The output shaft end of the servo motor is fixed with a rotating plate via a spline. A sponge cloth is fixedly installed on the side of the rotating plate near the servo motor. When the nozzle moves to the far end of the probe body's detection end, the servo motor drives the sponge cloth to wipe the detection end of the probe body.

[0010] As a further improvement to this technical solution, a feed pump is fixedly installed on one side of the grip, and the discharge port of the feed pump is connected to the nozzle through a hose. A limit switch is fixedly installed on the bottom side inside the mounting groove, and both the feed pump and the servo motor are electrically connected to the limit switch.

[0011] As a further improvement to this technical solution, when the trigger approaches the grip, the second rack moves with the trigger to the position of triggering the limit switch, at which point the nozzle moves to the far end of the probe body's detection end.

[0012] As a further improvement to this technical solution, a T-shaped block is slidably arranged inside the movable frame, and the T-shaped block is fixed to the side wall of the probe body by bolts.

[0013] As a further improvement to this technical solution, a cavity is provided at the bottom of the grip, and a storage battery is fixedly installed inside the cavity. The feed pump and the servo motor are both electrically connected to the storage battery through limit switches.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. The static detection device used in this truss lifting equipment, after aligning the nozzle with the weld area, presses the trigger along the axis of the extension rod. The trigger drives the second rack to move towards the limit switch, synchronously driving the movable frame to move the nozzle and cleaning assembly as a whole towards the far end of the probe body's detection end. When the second rack contacts and triggers the limit switch, the feed pump delivers the coupling agent into the nozzle, which then precisely sprays the coupling agent onto the weld. At the same time, the servo motor drives the rotating plate and sponge cloth to rotate, wiping the surface of the probe detection end, effectively removing the coupling agent remaining on the probe detection end surface during the detection process. This achieves the sequential coordination of coupling agent spraying and probe cleaning, ensuring that weld surface pretreatment and probe maintenance are completed simultaneously in a single operation process, reducing the safety risks and implementation difficulties of multiple alternating operations in high-altitude working environments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the probe assembly of this utility model;

[0018] Figure 3 This is a cross-sectional view of the probe assembly of this utility model;

[0019] Figure 4 This is a partial structural schematic diagram of the probe assembly of this utility model.

[0020] The meanings of the labels in the diagram are as follows:

[0021] 1. Ultrasonic flaw detector;

[0022] 2. Probe assembly; 21. Probe body; 22. Handle; 23. Movable frame; 231. T-block;

[0023] 24. Displacement mechanism; 241. First rack; 242. Gear; 243. Trigger; 244. Second rack; 245. Extension rod; 246. Spring; 247. Nut;

[0024] 25. Nozzle; 26. Feed pump;

[0025] 27. Cleaning components; 271. Servo motor; 272. Rotary plate; 273. Sponge cloth;

[0026] 28. Limit switch; 29. ​​Storage battery. Detailed Implementation

[0027] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] Please see Figure 1 As shown, the purpose of this embodiment is to provide a static inspection device for truss lifting equipment, including an ultrasonic flaw detector 1 and a probe assembly 2. The probe assembly 2 includes a probe body 21. The ultrasonic flaw detector 1 is electrically connected to the probe body 21 via a cable. Both the ultrasonic flaw detector 1 and the probe body 21 are commercially available mature products, and their specific technical parameters meet the requirements of relevant industry standards. During the inspection, the operator contacts the detection end of the probe body 21 with the surface of the truss weld. The internal quality of the weld is non-destructively inspected through the ultrasonic reflection principle. This technology can effectively identify defects such as cracks and pores in the weld. Its detection principle is a mature existing technology and will not be elaborated further in this article. During the inspection process, attention should be paid to maintaining the coupling effect between the probe and the detection surface to ensure the accuracy of the inspection data.

[0030] Reference Figure 2 To facilitate operation, a handle 22 is fixed on the probe body 21 at a position away from the detection end. The operator can easily pick up the probe body 21 by holding the handle 22. A movable frame 23 is horizontally arranged on the side of the handle 22 near the detection end of the probe body 21. The movable frame 23 is slidably arranged on the probe body 21. A T-shaped block 231 is slidably arranged inside the movable frame 23. The T-shaped block 231 is fixed to the side wall of the probe body 21 by bolts. The T-shaped block 231 restricts the position of the movable frame 23, so that the movable frame 23 can only move horizontally along the axis of the T-shaped block 231. At the same time, when the other side of the movable frame 23 contacts one end of the T-shaped block 231, the T-shaped block 231 blocks the movement distance of the movable frame 23, ensuring the stable sliding of the movable frame 23 on the T-shaped block 231.

[0031] To precisely adjust the position of the movable frame 23, a displacement mechanism 24 is provided on the handle 22 to drive the movable frame 23 to move horizontally. A nozzle 25 is fixed at one end of the movable frame 23 near the detection end of the probe body 21. The nozzle 25 sprays the coupling agent away from the movable frame 23. In the initial state, the nozzle 25 is located on the side of the probe body 21. At the same time, a feed pump 26 is fixedly installed on one side of the handle 22. The discharge port of the feed pump 26 is connected to the nozzle 25 through a hose, and the suction port of the feed pump 26 is connected to a portable coupling agent storage tank (which is designed to be carried around) through a hose.

[0032] When the operator directs the nozzle 25 toward the weld, the operator controls the displacement mechanism 24 to move the movable frame 23 closer to the detection end of the probe body 21. During this process, the nozzle 25 moves together with the movable frame 23. When the movable frame 23 stops moving, the nozzle 25 moves out from the underside of the probe body 21. At this time, the feed pump 26 delivers the coupling agent from the coupling agent tank to the nozzle 25, causing the nozzle 25 to spray the coupling agent onto the weld. Since the nozzle 25 is located on the side of the probe body 21 away from the handle 22 at this time, the coupling agent will not splash back and contaminate the surface of the probe body 21. After the coupling agent spraying in the weld area is completed, the operator resets the nozzle 25 to the initial position through the displacement mechanism 24. At this time, the detection end of the probe body 21 can contact the weld surface without obstruction for detection operations.

[0033] The structure of displacement mechanism 24 is detailed below, referring to... Figure 3 The displacement mechanism 24 includes a mounting groove on the side of the handle 22 near the probe body 21. A gear 242 is rotatably arranged inside the mounting groove. A first rack 241 and a second rack 244 are respectively meshed on the upper and lower sides of the gear 242. The first rack 241 is fixed to the end of the movable frame 23 away from the nozzle 25. One end of the second rack 244 extends to the outside of the mounting groove and is fixed with a trigger 243. The displacement mechanism 24 also includes an extension rod 245 horizontally fixed to the side of the trigger 243 near the handle 22. An embedded groove is provided on the side of the handle 22 near the trigger 243 corresponding to the position of the extension rod 245. The other end of the extension rod 245 slides through the side wall of the embedded groove and is threaded with a nut 247. The nut 247 prevents the extension rod 245 from disengaging from the handle 22. At the same time, a spring 246 is provided between the side wall of the embedded groove and the trigger 243 and sleeved on the extension rod 245. The spring 246 pushes the trigger 243 away from the handle 22.

[0034] When the device is in its initial state, the nozzle 25 is located to the side of the probe body 21, and there is a gap between the trigger 243 and the handle 22.

[0035] During use, the operator presses the trigger 243, causing it to move closer to the handle 22 along the axis of the extension rod 245. During this process, the distance between the trigger 243 and the side wall of the recessed groove shortens, causing the trigger 243 to compress and store energy in the spring 246. Simultaneously, as the trigger 243 moves, it drives the second rack 244 to move away from the nozzle 25. The moving second rack 244 drives the gear 242 to rotate. The rotating gear 242 drives the first rack 241 and the movable frame 23 to move horizontally in the opposite direction to the second rack 244, causing the nozzle 25 to extend from the lower side of the probe body 21. A limit switch 28 is fixedly installed on the bottom side inside the mounting groove. The device is positioned with the handle 22 away from the nozzle 25, and the feed pump 26 is electrically connected to the limit switch 28. When the spring 246 is compressed to its limit, the movable frame 23 moves the nozzle 25 to the lower side of the probe body 21 and extends it out. At this time, the second rack 244 triggers the limit switch 28, which energizes the limit switch 28 to make the feed pump 26 work. The working feed pump 26 delivers the coupling agent and sprays it out from the nozzle 25. After the coupling agent is sprayed, the operator releases the trigger 243, and the spring 246 releases its elastic potential energy to reset the movable frame 23, the nozzle 25, and the second rack 244. The feed pump 26 stops working when the second rack 244 disengages from the limit switch 28.

[0036] To clean residual coupling agent from the detection end of the probe body 21 before weld inspection, a cleaning component 27 is provided on one side of the nozzle 25. When the nozzle 25 moves with the movable frame 23 to the distal position of the detection end of the probe body 21, the cleaning component 27 cleans the detection end of the probe body 21. Figure 4 The cleaning component 27 includes a servo motor 271 fixedly mounted on one side of the movable frame 23. The servo motor 271 is also electrically connected to the limit switch 28. A rotating plate 272 is fixed to the end of the output shaft of the servo motor 271 via a spline. A sponge cloth 273 is fixedly disposed on the side of the rotating plate 272 near the servo motor 271. When the nozzle 25 moves out from below the detection end of the probe body 21, the side of the sponge cloth 273 near the servo motor 271 is on the same plane as the detection end of the probe body 21. The servo motor 271 drives the sponge cloth 273 to move against the probe body 21. The detection end is wiped. When the coupling agent is sprayed from the nozzle 25, the servo motor 271 drives the rotating plate 272 to swing once via the electrical connection of the limit switch 28. The rotation angle of the servo motor 271 can be set in advance. This set angle is existing technology and will not be improved in this solution, so it will not be described in detail. By driving the rotating plate 272 to swing once, the sponge cloth 273 wipes the surface of the probe detection end back and forth, effectively removing the coupling agent accumulated at the detection end of the probe body 21 during the detection process.

[0037] The meaning of a single swing of the rotating plate 272 is: the rotating plate 272 rotates from one side of the detection end of the probe body 21, so that the sponge cloth 273 wipes the detection end of the probe body 21. After the sponge cloth 273 rotates to the other side of the detection end of the probe body 21, the rotating plate 272 rotates in the opposite direction, so that the rotating plate 272 returns to its original position.

[0038] Meanwhile, a cavity is provided at the bottom of the handle 22, and a storage battery 29 is fixedly installed inside the cavity. The feed pump 26 and the servo motor 271 are both electrically connected to the storage battery 29 through the limit switch 28. The storage battery 29 supplies power to the feed pump 26 and the servo motor 271, eliminating the trouble of external power cords and improving the portability of this device. The storage battery 29 can adopt a quick-release structure for easy replacement or charging.

[0039] When using this device, the operator first aligns the nozzle 25 with the weld area, then presses the trigger 243 along the axis of the extension rod 245 towards the handle 22, causing the nozzle 25 and cleaning assembly 27 to move as a whole towards the distal end of the probe body 21. When the second rack 244 contacts and triggers the limit switch 28, the feed pump 26 starts immediately, delivering the coupling agent into the nozzle 25. The coupling agent is then precisely sprayed onto the weld through the nozzle 25. The servo motor 271 synchronously drives the rotating plate 272 to perform a single-stroke reciprocating swing at a preset angle, using the mechanism fixed to the rotating plate 272. The sponge cloth 273 on the surface of the probe mechanically wipes the surface of the probe detection end to remove the coupling agent adhering to the detection end of the probe body 21. After the coupling agent is sprayed on the weld, the operator contacts the detection end of the probe body 21 with the weld, and the ultrasonic flaw detection of the weld can be performed by this device. The above method realizes the timing coordination of coupling agent spraying and probe cleaning, ensuring that the pretreatment and maintenance of the detection surface are completed simultaneously, thereby reducing the complexity of the operator's work at height and facilitating the operator's inspection of the truss welding position.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A static testing device for truss lifting equipment, comprising an ultrasonic flaw detector (1) and a probe assembly (2), wherein the probe assembly (2) comprises a probe body (21), and the ultrasonic flaw detector (1) is electrically connected to the probe body (21) via a cable, characterized in that: A handle (22) is fixed on the probe body (21) at a position away from the detection end. A movable frame (23) is horizontally arranged on the side of the handle (22) near the detection end of the probe body (21). The movable frame (23) is slidably arranged on the probe body (21). A nozzle (25) is fixed on the end of the movable frame (23) near the detection end of the probe body (21). A cleaning component (27) is arranged on one side of the nozzle (25). A displacement mechanism (24) is arranged on the handle (22) for driving the movable frame (23) to move horizontally. When the nozzle (25) moves with the movable frame (23) to the far end of the detection end of the probe body (21), the cleaning component (27) cleans the detection end of the probe body (21).

2. The static detection device for a truss crane according to claim 1, characterized in that: The displacement mechanism (24) includes a mounting groove on the side of the handle (22) near the probe body (21). A gear (242) is rotatably arranged inside the mounting groove. A first rack (241) and a second rack (244) are respectively meshed on the upper and lower sides of the gear (242). The first rack (241) is fixed at the end of the movable frame (23) away from the nozzle (25). One end of the second rack (244) extends to the outside of the mounting groove and is fixed with a trigger (243).

3. The static detection device for a truss crane according to claim 2, characterized in that: The displacement mechanism (24) further includes an extension rod (245) horizontally fixed on the side of the trigger (243) near the grip (22). The grip (22) near the trigger (243) has an inner groove at the position corresponding to the extension rod (245). The other end of the extension rod (245) slides through the side wall of the inner groove and is threaded with a nut (247). A spring (246) is provided between the side wall of the inner groove and the trigger (243) and sleeved on the extension rod (245). The spring (246) pushes the trigger (243) away from the grip (22).

4. The static detection device for a truss crane according to claim 2, characterized in that: The cleaning assembly (27) includes a servo motor (271) fixedly installed on one side of the movable frame (23). The output shaft end of the servo motor (271) is fixed with a rotating plate (272) via a spline. A sponge cloth (273) is fixedly installed on the side of the rotating plate (272) near the servo motor (271). When the nozzle (25) moves to the far end of the detection end of the probe body (21), the servo motor (271) drives the sponge cloth (273) to wipe the detection end of the probe body (21).

5. The static detection device for a truss crane according to claim 4, characterized in that: A feed pump (26) is fixedly installed on one side of the grip (22). The discharge port of the feed pump (26) is connected to the nozzle (25) through a hose. A limit switch (28) is fixedly installed on the bottom side inside the mounting groove. The feed pump (26) and the servo motor (271) are both electrically connected to the limit switch (28).

6. The static detection device for a truss crane according to claim 5, characterized in that: When the trigger (243) approaches the handle (22), the second rack (244) moves with the trigger (243) to the position of triggering the limit switch (28), at which time the nozzle (25) moves to the far end of the detection end of the probe body (21).

7. The static detection device for a truss crane apparatus according to claim 1, characterized by: The movable frame (23) has a T-shaped block (231) that is slidably disposed inside, and the T-shaped block (231) is fixed to the side wall of the probe body (21) by bolts.

8. The static detection device for a truss crane according to claim 5, characterized in that: The bottom of the grip (22) has a cavity, and a storage battery (29) is fixedly installed inside the cavity. The feed pump (26) and the servo motor (271) are both electrically connected to the storage battery (29) through a limit switch (28).

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