Crack and fatigue life detection device for crane girder

Abstract

The invention discloses a crane girder crack and fatigue life detection device, and relates to the technical field of crane girders, the crane girder crack and fatigue life detection device comprises a device body, the middle position of the top surface of the device body is fixedly connected with a bracket, two sides of the bracket are detachably provided with baffle plates, one side of the device body is fixedly connected with a bracket, and the bracket is fixedly connected with the bracket. The device body is fixedly connected with two groups of first shaft seats, and a sliding rod is fixedly connected between the first shaft seats; the main beam detection device further comprises a sliding assembly, a detection assembly and a driving assembly, the sliding assembly is arranged on the sliding rod for cooperative use, the detection assembly is arranged on the sliding assembly and used for detecting a main beam, and the driving assembly is arranged on the support and used in cooperation with the sliding assembly. The device is reasonable in structure, simulative actual use conditions of the main beam are tested through the sliding assembly detection assembly, then the sliding assembly enables the driving assembly to move back and forth, and the detection efficiency of the main beam is improved.

Description

Technical Field

[0001] The invention relates to the technical field of crane main beams, in particular to a device for detecting cracks and fatigue life of crane main beams. Background Art

[0002] A crane is an electromechanical device used to move heavy objects vertically or horizontally. It is primarily used in construction, logistics, and industry, utilizing components such as robotic arms and hooks to facilitate material handling, equipment installation, and specialized process operations. The following are its core uses and classifications: Construction uses primarily involve lifting construction materials (such as rebar, concrete slabs, and steel structures) and equipment to improve efficiency and ensure safety, and installing large building components, such as tower cranes, in high-rise building construction. Port logistics involves loading and unloading containers, bulk cargo, and heavy equipment, achieving efficient cargo transfer through vertical and horizontal movement.

[0003] Existing cranes are all equipped with a main beam, which is slid by motor equipment on the main beam to facilitate the lifting of objects. Since the main beam is used for a long time, it needs to be tested for fatigue life during processing. Most of the existing tests on the crane main beam are carried out through chemical analysis or mechanical tests to test the hardness, yield strength, tensile strength, impact toughness and corrosion resistance of the main beam steel. The test results cannot match the actual working intensity of the main beam. Summary of the Invention

[0004] The purpose of this application is to provide a device for detecting cracks and fatigue life of a crane main beam, which realizes the testing of the main beam by simulating the actual use conditions through a sliding component detection component, and then the sliding component enables the driving component to move back and forth, thereby improving the detection efficiency of the main beam.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a device for detecting cracks and fatigue life of a crane main beam, comprising a device body, a bracket fixedly connected to the middle position of the top surface of the device body, baffles detachably installed on both sides of the bracket, a bracket fixedly connected to one side of the device body, two groups of first axle seats fixedly connected to the device body, and sliding rods fixedly connected between the first axle seats; further comprising a sliding assembly, a detection assembly and a drive assembly, the sliding assembly being arranged on the sliding rod for coordinated use, the detection assembly being arranged on the sliding assembly for detecting the main beam, and the drive assembly being arranged on the bracket for coordinated use with the sliding assembly.

[0006] Preferably, the sliding assembly includes a pair of sleeves mounted on the sliding rod, the pair of sleeves are fixedly connected to a frame, the other end of the frame is fixedly connected to a docking plate, the middle position of one side of the docking plate is fixedly connected to a side plate, and a tooth plate is fixedly installed on the side plate.

[0007] Preferably, both ends of the docking plate are fixedly connected with pins, an arm plate is rotatably connected to the pin, and the other end of the arm plate is rotatably connected to a roller.

[0008] Preferably, the detection component includes a through slot opened on the arm plate, a pulley is slidably connected to the inside of the through slot, the pulley is rotatably connected to the cross plate, a docking seat is fixedly connected to the middle position of one side of the cross plate, a threaded rod is rotatably connected to the docking seat, a turntable is fixedly connected to the top of the threaded rod, a sleeve is threadedly connected to the threaded rod, and the sleeve is fixedly installed in the middle position of the docking plate.

[0009] Preferably, the surface of the arm plate is fixedly connected to a limiting column, a linkage plate is rotatably connected to the limiting column, a first spring is sleeved on the limiting column, two ends of the first spring are respectively fixedly connected to one side of the arm plate and one side of the linkage plate, one end of the linkage plate is fixedly connected to a rod body, one end of the rod body is rotatably connected to a detection wheel, and a sensor is fixedly installed on the surface of the linkage plate.

[0010] Preferably, the driving assembly includes a first hinged seat fixedly installed at the bottom surface of the bracket, a pair of movable plates are rotatably connected to the first hinged seat, the other ends of the pair of movable plates are rotatably connected to the main shaft, the two ends of the main shaft are fixedly connected to gears, the gears and the gear plates are engaged with each other, and the middle position of the main shaft is fixedly connected to a first pulley.

[0011] Preferably, a cross bar is fixedly connected between a pair of movable plates, a telescopic rod is rotatably connected to the cross bar, the other end of the telescopic rod is rotatably connected to a second hinge seat, and the second hinge seat is fixedly installed on the bottom surface of the bracket.

[0012] Preferably, a servo motor is fixedly installed at the top position of the bracket, the output end of the servo motor is fixedly connected to a transmission rod, one end of the transmission rod is fixedly connected to a second pulley, a transmission belt is sleeved on the second pulley, one side of the transmission belt is sleeved on the third pulley, and the bottom end of the transmission belt is sleeved on the first pulley.

[0013] Preferably, the third pulley is rotatably connected to the column, one end of the column is fixedly connected to the sleeve block, the sleeve block is slidably connected to the limit rod, one end of the limit rod is fixedly connected to a sleeve ring, and a second spring is sleeved on the limit rod, and both ends of the second spring are respectively fixedly connected to one side of the sleeve ring and one side of the sleeve block.

[0014] Preferably, the other end of the limit rod is fixedly connected to the second shaft seat, the second shaft seat is fixedly installed at the bottom position of the bracket, the servo motor is fixedly connected to a positioning plate, the positioning plate is slidably connected to a slider, and the slider is fixedly installed on the sleeve block.

[0015] In summary, the present invention has the following beneficial effects:

[0016] When the height of the roller needs to be adjusted, the turntable is rotated, and the rotation of the turntable drives the threaded rod to rotate. A sleeve is threadedly connected to the threaded rod, and the bottom end of the threaded rod is rotatably connected to the docking seat. The rotation of the threaded rod moves the cross plate on the docking seat upward. The movement of the cross plate causes the pulley to slide inside the through groove, thereby facilitating the rotation of the arm plate to adjust the height of the roller. The rotation of the roller causes the detection wheel on the rod body to slide on the main beam. When the detection wheel encounters an uneven place, the linkage plate will rotate, and the damaged part of the main beam can be detected by the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the device body when viewed from above;

[0020] Figure 3 Schematic diagram of the three-dimensional structure of the slider;

[0021] Figure 4 Schematic diagram of the three-dimensional structure of the docking plate;

[0022] Figure 5 Schematic diagram of the three-dimensional structure of the arm plate;

[0023] Figure 6 Schematic diagram of the three-dimensional structure of the bracket;

[0024] Figure 7 Schematic diagram of the three-dimensional structure of the movable plate;

[0025] Figure 8 for Figure 7 Enlarged structural diagram at point A in the middle.

[0026] In the figure: 1. Device body; 101. Bracket; 102. Baffle; 103. Bracket; 104. First shaft seat; 105. Slide rod; 2. Sleeve; 201. Frame; 202. Docking plate; 203. Side plate; 204. Tooth plate; 205. Pin; 206. Arm plate; 207. Roller; 3. Through slot; 301. Pulley; 302. Cross plate; 303. Docking seat; 304. Threaded rod; 305. Turntable; 306. Sleeve; 307. Limiting column; 308. Linkage plate; 309. First spring; 310. Rod body; 311. 1. Detection wheel; 312. Sensor; 4. First articulated seat; 401. Movable plate; 402. Main shaft; 403. Gear; 404. First pulley; 405. Cross bar; 406. Telescopic rod; 407. Second articulated seat; 408. Servo motor; 409. Transmission rod; 410. Second pulley; 411. Transmission belt; 412. Third pulley; 413. Column; 414. Bushing; 415. Limit rod; 416. Ring; 417. Second spring; 418. Second shaft seat; 419. Positioning plate; 420. Slider. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example: Reference Figure 1 - Figure 8 The device for detecting cracks and fatigue life of a crane main beam shown includes a device body 1, a bracket 101 is fixedly connected to the middle position of the top surface of the device body 1, baffles 102 are detachably installed on both sides of the bracket 101, a bracket 103 is fixedly connected to one side of the device body 1, two groups of first axle seats 104 are fixedly connected to the device body 1, and slide rods 105 are fixedly connected between the first axle seats 104; it also includes a sliding assembly, a detection assembly and a driving assembly, the sliding assembly is arranged on the slide rod 105 for coordinated use, the detection assembly is arranged on the sliding assembly for detecting the main beam, and the driving assembly is arranged on the bracket 103 for use in conjunction with the sliding assembly.

[0029] Specifically, it should be noted that the sensor 312 and the servo motor 408 are electrically connected to the control unit via wires, and the specific working principles therebetween are referenced from the existing technology and will not be elaborated on herein.

[0030] As an implementation method in this embodiment, the sliding assembly includes a pair of sleeves 2 mounted on the sliding rod 105, the pair of sleeves 2 are fixedly connected to a frame 201, the other end of the frame 201 is fixedly connected to a docking plate 202, a side plate 203 is fixedly connected to the middle position of one side of the docking plate 202, a tooth plate 204 is fixedly installed on the side plate 203, both ends of the docking plate 202 are fixedly connected to pins 205, the pins 205 are rotatably connected to an arm plate 206, and the other end of the arm plate 206 is rotatably connected to a roller 207.

[0031] Specifically, when the roller 207 needs to move back and forth on the main beam for detection, the tooth plate 204 is driven to move by the driving assembly, and the movement of the tooth plate 204 drives the docking plate 202 to move through the side plate 203. The two ends of the docking plate 202 are fixedly connected with pins 205, and the pins 205 are rotatably connected to the arm plate 206, and the other end of the arm plate 206 is rotatably connected to the roller 207. The movement of the docking plate 202 simulates the actual use strength of the main beam through the roller 207 on the arm plate 206.

[0032] As an implementation method in this embodiment, the detection component includes a through slot 3 opened on the arm plate 206, the interior of the through slot 3 is slidably connected to a pulley 301, the pulley 301 is rotatably connected to the cross plate 302, a docking seat 303 is fixedly connected to the middle position of one side of the cross plate 302, a threaded rod 304 is rotatably connected to the docking seat 303, the top of the threaded rod 304 is fixedly connected to a turntable 305, the threaded rod 304 is threadedly connected to a sleeve 306, and the sleeve 306 is fixedly mounted on the docking plate At the middle position of 202, the surface of the arm plate 206 is fixedly connected to the limiting column 307, and the limiting column 307 is rotatably connected to the linkage plate 308. The limiting column 307 is sleeved with a first spring 309, and the two ends of the first spring 309 are respectively fixedly connected to one side of the arm plate 206 and one side of the linkage plate 308. One end of the linkage plate 308 is fixedly connected to the rod body 310, and one end of the rod body 310 is rotatably connected to the detection wheel 311. The surface of the linkage plate 308 is fixedly installed with a sensor 312.

[0033] Specifically, when the height of the roller 207 needs to be adjusted, the turntable 305 is rotated, and the rotation of the turntable 305 drives the threaded rod 304 to rotate. The threaded rod 304 is threadedly connected to a sleeve 306, which is rotatably connected to the docking seat 303 at the bottom end of the threaded rod 304. The rotation of the threaded rod 304 moves the cross plate 302 on the docking seat 303 upward. The movement of the cross plate 302 causes the pulley 301 to slide inside the through groove 3, thereby facilitating the rotation of the arm plate 206 to adjust the height of the roller 207. The rotation of the roller 207 causes the detection wheel 311 on the rod body 310 to slide on the main beam. When the detection wheel 311 encounters an uneven place, the linkage plate 308 will rotate, and the damaged part of the main beam can be detected by the sensor 312.

[0034] As an implementation method in this embodiment, the driving assembly includes a first articulated seat 4 fixedly mounted on the bottom surface of the bracket 103, a pair of movable plates 401 are rotatably connected to the first articulated seat 4, the other end of the pair of movable plates 401 is rotatably connected to the main shaft 402, both ends of the main shaft 402 are fixedly connected to gears 403, the gears 403 and the toothed plate 204 are meshed with each other, the middle position of the main shaft 402 is fixedly connected to a first pulley 404, a cross bar 405 is fixedly connected between the pair of movable plates 401, a telescopic rod 406 is rotatably connected to the cross bar 405, the other end of the telescopic rod 406 is rotatably connected to the second articulated seat 407, the second articulated seat 407 is fixedly mounted on the bottom surface of the bracket 103, a servo motor 408 is fixedly mounted on the top position of the bracket 103, the output end of the servo motor 408 is fixedly connected to a transmission rod 409, and one end of the transmission rod 409 is fixedly connected to the second belt The second pulley 410 is provided with a transmission belt 411, one side of the transmission belt 411 is provided on the third pulley 412, the bottom end of the transmission belt 411 is provided on the first pulley 404, the third pulley 412 is rotatably connected to the column 413, one end of the column 413 is fixedly connected to the sleeve block 414, the sleeve block 414 is slidably connected to the limit rod 415, one end of the limit rod 415 is fixedly connected to the collar 416, the limit rod 415 is provided with a second spring 417, the two ends of the second spring 417 are respectively fixedly connected to one side of the collar 416 and one side of the sleeve block 414, the other end of the limit rod 415 is fixedly connected to the second shaft seat 418, the second shaft seat 418 is fixedly installed at the bottom position of the bracket 103, the servo motor 408 is fixedly connected to a positioning plate 419, the positioning plate 419 is slidably connected to a slider 420, and the slider 420 is fixedly installed on the sleeve block 414.

[0035] Specifically, the telescopic rod 406 pushes the cross bar 405, thereby facilitating the downward movement of the third pulley 412 on the movable plate 401. The movement of the third pulley 412 causes the column 413 to engage with the tooth plate 204, and then the servo motor 408 operates to rotate the transmission rod 409. The rotation of the transmission rod 409 drives the second pulley 410 to rotate. The second pulley 410 is provided with a transmission belt 411, and the other end of the transmission belt 411 is mounted on the first pulley 404. The movement of the third pulley 412 of the main shaft 402 will be moved by the elastic force of the second spring 417 to prevent the transmission belt 411 from falling off. The rotation of the second pulley 410 drives the gear 403 on the main shaft 402 to rotate through the transmission belt 411, thereby facilitating the gear 403 to move the tooth plate 204.

[0036] The working principle of the present invention is as follows: when the roller 207 needs to be moved back and forth on the main beam for testing, the tooth plate 204 is driven to move by the driving assembly, and the movement of the tooth plate 204 drives the docking plate 202 to move through the side plate 203. The two ends of the docking plate 202 are fixedly connected with pins 205, and the pins 205 are rotatably connected to the arm plate 206, and the other end of the arm plate 206 is rotatably connected to the roller 207. The movement of the docking plate 202 simulates the actual use strength of the main beam through the roller 207 on the arm plate 206.

[0037] When the height of the roller 207 needs to be adjusted, the turntable 305 is rotated, and the rotation of the turntable 305 drives the threaded rod 304 to rotate. The threaded rod 304 is threadedly connected to a sleeve 306, which is rotatably connected to the docking seat 303 at the bottom end of the threaded rod 304. The horizontal plate 302 on the docking seat 303 moves upward through the rotation of the threaded rod 304. The movement of the horizontal plate 302 causes the pulley 301 to slide inside the through groove 3, thereby facilitating the rotation of the arm plate 206 to adjust the height of the roller 207. The rotation of the roller 207 causes the detection wheel 311 on the rod body 310 to slide on the main beam. When the detection wheel 311 encounters an uneven place, the linkage plate 308 will rotate, and the damaged part of the main beam can be detected by the sensor 312.

[0038] The telescopic rod 406 pushes the cross bar 405, so that the third pulley 412 on the movable plate 401 moves downward. The movement of the third pulley 412 causes the column 413 to mesh with the tooth plate 204, and then the servo motor 408 operates to rotate the transmission rod 409. The rotation of the transmission rod 409 drives the second pulley 410 to rotate. The second pulley 410 is provided with a transmission belt 411, and the other end of the transmission belt 411 is sleeved on the first pulley 404. The movement of the third pulley 412 of the main shaft 402 will be moved by the elastic force of the second spring 417 to prevent the transmission belt 411 from falling off. The rotation of the second pulley 410 drives the gear 403 on the main shaft 402 to rotate through the transmission belt 411, so that the gear 403 facilitates the movement of the tooth plate 204.

[0039] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for detecting cracks and fatigue life of crane main beams, characterized in that: include: A device body (1), wherein a bracket (101) is fixedly connected to the middle of the top surface of the device body (1), baffles (102) are detachably mounted on both sides of the bracket (101), a bracket (103) is fixedly connected to one side of the device body (1), two groups of first shaft seats (104) are fixedly connected to the device body (1), and sliding rods (105) are fixedly connected between the first shaft seats (104); It also includes a sliding assembly, a detection assembly and a driving assembly, wherein the sliding assembly is arranged on the sliding rod (105) for use in conjunction with the detection assembly, the detection assembly is arranged on the sliding assembly for detecting the main beam, and the driving assembly is arranged on the bracket (103) for use in conjunction with the sliding assembly.

2. The device for detecting cracks and fatigue life of a crane main beam according to claim 1, characterized in that: The sliding assembly comprises a pair of sleeves (2) sleeved on the sliding rod (105), a frame (201) being fixedly connected to the pair of sleeves (2), a docking plate (202) being fixedly connected to the other end of the frame (201), a side plate (203) being fixedly connected to the middle position of one side of the docking plate (202), and a tooth plate (204) being fixedly mounted on the side plate (203).

3. The device for detecting cracks and fatigue life of a crane main beam according to claim 2, characterized in that: The two ends of the docking plate (202) are fixedly connected with pins (205), the pins (205) are rotatably connected with arm plates (206), and the other end of the arm plates (206) is rotatably connected with rollers (207).

4. The device for detecting cracks and fatigue life of a crane main beam according to claim 3, characterized in that: The detection component comprises a through slot (3) provided on the arm plate (206); a pulley (301) is slidably connected inside the through slot (3); the pulley (301) is rotatably connected to the transverse plate (302); a docking seat (303) is fixedly connected to the middle position of one side of the transverse plate (302); a threaded rod (304) is rotatably connected to the docking seat (303); a top end of the threaded rod (304) is fixedly connected to a turntable (305); a sleeve (306) is threadedly connected to the threaded rod (304); and the sleeve (306) is fixedly installed at the middle position of the docking plate (202).

5. The device for detecting cracks and fatigue life of a crane main beam according to claim 4, characterized in that: The surface of the arm plate (206) is fixedly connected to a limiting column (307), a linkage plate (308) is rotatably connected to the limiting column (307), a first spring (309) is sleeved on the limiting column (307), two ends of the first spring (309) are respectively fixedly connected to one side of the arm plate (206) and one side of the linkage plate (308), one end of the linkage plate (308) is fixedly connected to a rod body (310), one end of the rod body (310) is rotatably connected to a detection wheel (311), and a sensor (312) is fixedly installed on the surface of the linkage plate (308).

6. The device for detecting cracks and fatigue life of a crane main beam according to claim 2, characterized in that: The driving assembly comprises a first hinge seat (4) fixedly mounted on the bottom surface of the bracket (103); a pair of movable plates (401) are rotatably connected to the first hinge seat (4); the other ends of the pair of movable plates (401) are rotatably connected to a main shaft (402); gears (403) are fixedly connected to both ends of the main shaft (402); the gears (403) and the toothed plate (204) are meshed with each other; and a first pulley (404) is fixedly connected to the middle of the main shaft (402).

7. The device for detecting cracks and fatigue life of a crane main beam according to claim 6, characterized in that: A cross bar (405) is fixedly connected between a pair of movable plates (401), a telescopic rod (406) is rotatably connected to the cross bar (405), the other end of the telescopic rod (406) is rotatably connected to a second hinge seat (407), and the second hinge seat (407) is fixedly installed on the bottom surface of the bracket (103).

8. The device for detecting cracks and fatigue life of a crane main beam according to claim 7, characterized in that: A servo motor (408) is fixedly installed at the top position of the bracket (103), the output end of the servo motor (408) is fixedly connected to a transmission rod (409), one end of the transmission rod (409) is fixedly connected to a second pulley (410), a transmission belt (411) is sleeved on the second pulley (410), one side of the transmission belt (411) is sleeved on the third pulley (412), and the bottom end of the transmission belt (411) is sleeved on the first pulley (404).

9. The device for detecting cracks and fatigue life of a crane main beam according to claim 8, characterized in that: The third pulley (412) is rotatably connected to the column (413), one end of the column (413) is fixedly connected to the sleeve (414), the sleeve (414) is slidably connected to the limit rod (415), one end of the limit rod (415) is fixedly connected to the collar (416), the limit rod (415) is sleeved with a second spring (417), and the two ends of the second spring (417) are respectively fixedly connected to one side of the collar (416) and one side of the sleeve (414).

10. The device for detecting cracks and fatigue life of a crane main beam according to claim 9, characterized in that: The other end of the limiting rod (415) is fixedly connected to the second shaft seat (418), and the second shaft seat (418) is fixedly installed at the bottom position of the bracket (103). The servo motor (408) is fixedly connected to a positioning plate (419), and the positioning plate (419) is slidably connected to a slider (420), and the slider (420) is fixedly installed on the sleeve block (414).

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