A special equipment detection device for testing the rigidity of cranes

Abstract

The present invention discloses a special equipment detection device for testing the rigidity of a crane, and relates to the technical field of special equipment detection. The present invention comprises a frame, a first traveling trolley, a second traveling trolley and an ultrasonic detection assembly. The first traveling trolley is arranged on both sides of the left and right sides of the frame, and the two first traveling trolleys support the boom. The first traveling trolley is slidably arranged on a first track, and the front end of the frame is provided with a second traveling trolley, and the second traveling trolley is slidably arranged on a second track. A plurality of ultrasonic detection assemblies distributed at equal intervals are arranged below the frame, and the ultrasonic detection assemblies are slidably arranged on a sliding frame, and the sliding frame is fixedly connected to the frame. The present invention provides a plurality of ultrasonic detection assemblies, so that the detection accuracy of the device is higher, the deformation of the four sides of the boom can be detected, and the deformation at each part of the boom can be monitored, which solves the problem that the existing detection device has general accuracy and insufficient comprehensiveness of detection.

Description

Technical Field

[0001] The invention belongs to the technical field of special equipment detection, and in particular relates to a special equipment detection device for testing the rigidity of a crane. Background Art

[0002] Crane refers to a multi-action lifting machine that can lift and carry heavy objects vertically and horizontally within a certain range. It is also called overhead crane, overhead crane, and crane. The working characteristic of lifting equipment is intermittent movement, that is, the corresponding mechanisms of taking materials, moving, unloading, etc. work alternately in one working cycle. The development and use of cranes in the market are becoming more and more extensive.

[0003] With the continuous development of the lifting industry, the performance requirements of cranes are getting higher and higher. The crane boom is one of the key components. Its stiffness can reflect the overall performance of the boom and is an important factor affecting its reliability and safety. It determines the overall safety and use effect of the crane. Therefore, it is necessary to use a crane stiffness detection device to detect the stiffness of the crane to ensure the safe use of the crane.

[0004] After searching, the announcement number CN214894106U and the announcement date 2021.11.26 disclose a special equipment detection device for testing the stiffness of a crane, which relates to the field of stiffness detection technology. The utility model includes a detection device and a fixing device, and the fixing device is arranged on the surface of the detection device. The utility model detects the stiffness of the crane through the detection device, and monitors the magnitude of the applied pressure and the magnitude of the deformation in real time, thereby improving the detection accuracy and facilitating the recording and observation of the detection personnel. The fixing device is suitable for clamping and fixing objects of different sizes to be detected, which greatly improves the fixing effect and prevents the object from being offset during the stiffness detection process, affecting the accuracy of the detection data. At the same time, it simplifies the structure of the device, reduces the cost, is simple to operate, and is convenient to use.

[0005] The patent has the following deficiencies:

[0006] 1. The detection device is not comprehensive enough, and it is difficult to conveniently test the stiffness of various parts of the boom;

[0007] 2. The detection device has general accuracy and is difficult to detect the deformation conditions of each surface of the boom.

[0008] Therefore, the existing special equipment detection devices cannot meet the needs in actual use, so the market is in urgent need of improved technologies to solve the above problems. Summary of the invention

[0009] The purpose of the present invention is to provide a special equipment detection device for testing the stiffness of a crane. By arranging multiple ultrasonic detection components, the detection accuracy of the device is higher, the deformation of the four sides of the crane arm can be detected, and the deformation of various parts of the crane arm can be monitored, thereby solving the problem that the existing detection devices have general accuracy and insufficient comprehensiveness of detection.

[0010] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0011] The present invention is a special equipment detection device for testing the rigidity of a crane, comprising a frame, a first walking trolley, a second walking trolley and an ultrasonic detection component, wherein the first walking trolley is arranged on both sides of the left and right sides of the frame, and the two first walking trolleys support the crane arm, the first walking trolley is slidably arranged on a first track, the front end of the frame is arranged with a second walking trolley, the second walking trolley is slidably arranged on the second track, a plurality of ultrasonic detection components distributed at equal intervals are arranged below the frame, the ultrasonic detection components are slidably arranged on a sliding frame, and the sliding frame is fixedly connected to the frame;

[0012] The ultrasonic detection assembly includes a first frame and a second frame, which are spliced ​​into a complete square frame. The lifting arm is arranged at the center of the square frame. Installation grooves are arranged on three inner side surfaces of the first frame and one inner side surface of the second frame. A plurality of ultrasonic detection sensors distributed at equal intervals are installed in the installation grooves. The ultrasonic detection sensors are arranged in the installation grooves to avoid collision damage.

[0013] Furthermore, a first support is disposed at the upper end of the first frame body, and a second support is disposed at the upper end of the second frame body. The first support is hinged to the second support and is locked by a first fastener.

[0014] Furthermore, two symmetrically distributed sliding sleeves are fixed on the top of the first frame, the sliding sleeves are slidably matched with the sliding frame and are locked by a second fastener, the sliding frame is provided with a slot hole, and the second fastener passes through the slot hole.

[0015] Furthermore, an actuator cylinder is fixed on the top of the frame, and a pressure block is fixed on the end of the piston rod of the actuator cylinder.

[0016] Furthermore, the first walking trolley includes a first walking frame, a first walking wheel and a first driving assembly. Four first walking wheels distributed in a matrix are arranged at the bottom of the first walking frame. The first walking wheel realizes automatic walking through the first driving assembly, and the first walking wheel cooperates with the first track.

[0017] Furthermore, the second walking trolley includes a second walking frame, second walking wheels and a second driving assembly. Four second walking wheels distributed in a matrix shape are arranged at the bottom of the second walking frame. The second walking wheels realize automatic walking through the second driving assembly. The second walking wheels cooperate with the second track. A hydraulic cylinder is fixed to the top center of the second walking frame. The piston rod of the hydraulic cylinder is fixedly connected to the bottom center of the top plate. Guide rods are fixed at the four corners of the bottom of the top plate. The guide rods are slidably matched with guide sleeves. The guide sleeves are fixed at the four corners of the top of the second walking frame. A limit strip is arranged on the top of the top plate. The limit strip can prevent the crane arm from falling off the top plate.

[0018] Furthermore, a clamping mechanism is provided on the top of the first walking trolley, and the clamping mechanism includes two clamping plates, and the two clamping plates are symmetrically arranged on both sides of the first walking frame, and the outer side surface of the clamping plate is fixedly connected to one end of the L-shaped connecting plate, and the other end of the L-shaped connecting plate is hinged to the connecting seat and locked by a third fastener.

[0019] Furthermore, the connecting seat is fixed on the top of the nut seat, the nut seat is movably sleeved on the screw rod, the screw rod is supported by two bearing seats, the end of the screw rod is fixed with a limiting block, the middle part of the screw rod is fixedly sleeved with a first gear, the first gear is meshed with the second gear, the second gear is fixedly sleeved on the output shaft of the motor, and the bearing seat and the motor are both fixed on the first walking frame.

[0020] Furthermore, the screw rod is configured as a bidirectional screw rod, and two nut seats are provided. The two nut seats are symmetrically arranged at different rotation directions of the screw rod. The setting of the bidirectional screw rod makes the two clamping plates have the same squeezing force on the crane arm, and the crane arm can always automatically align at the center.

[0021] The present invention has the following beneficial effects:

[0022] 1. The present invention provides a plurality of ultrasonic detection components, so that the detection accuracy of the device is higher. The ultrasonic detection sensors are distributed around the boom and can detect the deformation of the four sides of the boom. The plurality of ultrasonic detection components are distributed at equal intervals along the boom and can monitor the deformation of various parts of the boom and accurately calculate the stiffness based on the deformation.

[0023] 2. The present invention provides a first traveling trolley and a first track so that the detection of the device is more comprehensive. The distance between the two first traveling trolleys is adjustable, so as to adapt to the detection of crane arms of different lengths. After the detection of a certain part of the crane arm is completed, the two first traveling trolleys drive the crane arm to move as a whole, and perform stiffness detection on the next part, so that different parts of the crane arm can be detected.

[0024] 3. The present invention provides a second traveling trolley and a second track, so that the detection device is convenient for raising and lowering the lifting arm, and the lifting arm is not easy to collide with the detection device. The lifting arm to be detected is first lifted to the top of the second traveling trolley by a lifting device, and then the second traveling trolley moves along the second track, thereby driving the lifting arm to move to the bottom of the frame and overlapping it between the two first traveling trolleys. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure appearance of the present invention;

[0027] Figure 2 This is a schematic diagram of the distribution of the first walking trolley and the second walking trolley of the present invention;

[0028] Figure 3 It is a schematic diagram of the distribution of ultrasonic detection components of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the ultrasonic detection component of the present invention;

[0030] Figure 5 This is a schematic structural diagram of the first traveling trolley of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0032] Figure 7 This is a schematic structural diagram of the second walking trolley of the present invention;

[0033] Figure 8 It is a schematic diagram of the frame structure of the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] 1. Frame; 2. First traveling trolley; 3. First track; 4. Second traveling trolley; 5. Second track; 6. Ultrasonic detection assembly; 7. Sliding frame; 8. Clamping mechanism; 9. Lifting arm; 11. Executing cylinder; 12. Press block; 21. First traveling frame; 22. First traveling wheel; 23. First driving assembly; 41. Second traveling frame; 42. Second traveling wheel; 43. Second driving assembly; 44. Hydraulic cylinder; 45. Top plate; 46. Guide rod; 47. Guide sleeve; 48. Limit strip; 61, first frame; 62, second frame; 63, first support; 64, second support; 65, first fastener; 66, mounting groove; 67, ultrasonic detection sensor; 68, sleeve; 69, second fastener; 71, slot; 81, clamping plate; 82, L-shaped connecting plate; 83, connecting seat; 84, third fastener; 85, nut seat; 86, screw rod; 87, bearing seat; 88, limit block; 89, first gear; 810, second gear; 811, motor. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0037] See also Figure 1-3 As shown, the present invention is a special equipment detection device for testing the stiffness of a crane, comprising a frame 1, a first walking trolley 2, a second walking trolley 4 and an ultrasonic detection component 6. The first walking trolley 2 is arranged on both sides of the left and right sides of the frame 1, and the two first walking trolleys 2 support the lifting arm 9. The first walking trolley 2 is slidably arranged on the first track 3, and the second walking trolley 4 is arranged at the front end of the frame 1. The second walking trolley 4 is slidably arranged on the second track 5. A plurality of ultrasonic detection components 6 distributed at equal intervals are arranged below the frame 1, and the ultrasonic detection component 6 is slidably arranged on a sliding frame 7, and the sliding frame 7 is fixedly connected to the frame 1.

[0038] Among them Figure 3-4 As shown, the ultrasonic detection assembly 6 includes a first frame body 61 and a second frame body 62, which are spliced ​​into a complete square frame body. The lifting arm 9 is arranged at the center of the square frame body. Installation grooves 66 are arranged on the three inner side surfaces of the first frame body 61 and one inner side surface of the second frame body 62. A plurality of ultrasonic detection sensors 67 distributed at equal intervals are installed in the installation grooves 66. A first support 63 is arranged on the upper end of the first frame body 61, and a second support 64 is arranged on the upper end of the second frame body 62. The first support 63 and the second support 64 are hingedly connected and locked by a first fastener 65. Two symmetrically distributed sliding sleeves 68 are fixed to the top of the first frame body 61. The sliding sleeve 68 is slidably matched with the sliding frame 7 and locked by a second fastener 69. A slot 71 is arranged on the sliding frame 7, and the second fastener 69 passes through the slot 71.

[0039] When the ultrasonic detection component 6 is used, the spacing between multiple ultrasonic detection components 6 is adjusted based on the length of the lifting arm 9 to be detected. Specifically, the second fastener 69 is loosened, and the sliding sleeve 68 can slide freely along the sliding frame 7. After reaching the desired position, the second fastener 69 is tightened.

[0040] Loosen the first fastener 65 and rotate the second frame 62 to a horizontal state to ensure that the boom 9 can smoothly enter the frame of the ultrasonic detection component 6. After entering, reset the second frame 62. Use multiple ultrasonic detection sensors 67 to monitor the deformation of the boom 9 in all directions and at all parts, and calculate the stiffness based on the deformation.

[0041] Among them Figure 8 As shown, an actuator cylinder 11 is fixed on the top of the frame 1 , and a pressure block 12 is fixed to the end of the piston rod of the actuator cylinder 11 .

[0042] Among them Figure 5 As shown, the first walking trolley 2 includes a first walking frame 21, a first walking wheel 22 and a first driving assembly 23. Four first walking wheels 22 distributed in a matrix are arranged at the bottom of the first walking frame 21. The first walking wheel 22 realizes automatic walking through the first driving assembly 23, and the first walking wheel 22 cooperates with the first track 3.

[0043] Among them Figure 6 As shown, a clamping mechanism 8 is provided on the top of the first walking trolley 2, and the clamping mechanism 8 includes two clamping plates 81, and the two clamping plates 81 are symmetrically arranged on both sides of the first walking frame 21. The outer side surface of the clamping plate 81 is fixedly connected to one end of the L-shaped connecting plate 82, and the other end of the L-shaped connecting plate 82 is hinged to the connecting seat 83 and locked by a third fastener 84. The connecting seat 83 is fixed to the top of the nut seat 85, and the nut seat 85 is movably sleeved on the screw rod 86. The screw rod 86 is set as a two-way screw rod. There are two nut seats 85, and the two nut seats 85 are symmetrically arranged in different rotation directions of the screw rod 86. The screw rod 86 is supported by two bearing seats 87. The end of the screw rod 86 is fixed with a limiting block 88. The middle part of the screw rod 86 is fixedly sleeved with a first gear 89, and the first gear 89 is meshed with the second gear 810. The second gear 810 is fixedly sleeved on the output shaft of the motor 811, and the bearing seat 87 and the motor 811 are both fixed on the first walking frame 21.

[0044] When the clamping mechanism 8 is used specifically, when it is necessary to move the boom 9 between the two clamping plates 81, first loosen the third fastener 84, rotate the clamping plate 81 and the L-shaped connecting plate 82 to a horizontal position to avoid blocking the boom 9. When the boom 9 moves to above the first walking trolley 2 through the second walking trolley 4, control the hydraulic cylinder 44 to descend so that the boom 9 is placed between the two first walking trolleys 2. Then the clamping plate 81 and the L-shaped connecting plate 82 are reset, and the motor 811 is started. The motor 811 drives the second gear 810 to rotate, and the second gear 810 drives the first gear 89 to rotate. The first gear 89 drives the screw rod 86 to rotate, and the screw rod 86 drives the two nut seats 85 to move at the same time. The two nut seats 85 respectively drive their respective connecting seats 83, L-shaped connecting plates 82, and clamping plates 81 to move, thereby clamping the boom 9 through the two clamping plates 81.

[0045] Among them Figure 7 As shown, the second walking trolley 4 includes a second walking frame 41, second walking wheels 42 and a second driving assembly 43. Four second walking wheels 42 distributed in a matrix are arranged at the bottom of the second walking frame 41. The second walking wheels 42 are automatically walked by the second driving assembly 43. The second walking wheels 42 cooperate with the second track 5. A hydraulic cylinder 44 is fixed to the top center of the second walking frame 41. The piston rod of the hydraulic cylinder 44 is fixedly connected to the bottom center of the top plate 45. Guide rods 46 are fixed at the four corners of the bottom of the top plate 45. The guide rods 46 are slidably matched with guide sleeves 47. The guide sleeves 47 are fixed at the four corners of the top of the second walking frame 41. A limiting strip 48 is arranged on the top of the top plate 45.

[0046] A specific application of this embodiment is:

[0047] S1: Based on the length of the boom 9 to be detected, adjusting the distance between the two first walking carriages 2 and adjusting the distance between the multiple ultrasonic detection components 6;

[0048] S2: The crane arm 9 to be inspected is hoisted to the top of the second traveling trolley 4 by means of a hoisting device, and then the second driving assembly 43 is started, and the second driving assembly 43 drives the second traveling wheel 42 to move along the second track 5, so that the second traveling trolley 4 drives the crane arm 9 to move to the bottom of the frame 1;

[0049] S3: Control the hydraulic cylinder 44 to descend so that the boom 9 is placed between the two first traveling carriages 2, and then the boom 9 is clamped by the clamping mechanism 8;

[0050] S4: Control the actuator cylinder 11 to apply pressure to the boom 9, monitor the deformation of the boom 9 in various directions and at various locations through a plurality of ultrasonic detection sensors 67, and calculate the stiffness based on the deformation;

[0051] S5: After a certain part of the boom 9 is tested, the two first traveling carriages 2 drive the boom 9 to move as a whole, and perform a stiffness test on the next part.

[0052] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments, any equivalent replacement of some of the technical features therein, and any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A special equipment detection device for testing the rigidity of a crane, comprising a frame (1), a first traveling trolley (2), a second traveling trolley (4) and an ultrasonic detection component (6), characterized in that: A first walking trolley (2) is provided on both sides of the left and right sides of the frame (1), and the two first walking trolleys (2) support the lifting arm (9), and the first walking trolley (2) is slidably arranged on a first track (3). A second walking trolley (4) is provided at the front end of the frame (1), and the second walking trolley (4) is slidably arranged on a second track (5). A plurality of ultrasonic detection components (6) distributed at equal intervals are provided below the frame (1), and the ultrasonic detection components (6) are slidably arranged on a sliding frame (7), and the sliding frame (7) is fixedly connected to the frame (1); The ultrasonic detection assembly (6) comprises a first frame (61) and a second frame (62), wherein the first frame (61) and the second frame (62) are spliced ​​into a complete square frame, the lifting arm (9) is arranged at the center of the square frame, and mounting grooves (66) are arranged on three inner side surfaces of the first frame (61) and one inner side surface of the second frame (62), and a plurality of ultrasonic detection sensors (67) distributed at equal intervals are installed in the mounting grooves (66).

2. A special equipment detection device for testing the rigidity of a crane according to claim 1, characterized in that: The upper end of the first frame (61) is provided with a first support (63), and the upper end of the second frame (62) is provided with a second support (64). The first support (63) and the second support (64) are hinged and locked by a first fastener (65).

3. A special equipment detection device for testing the rigidity of a crane according to claim 2, characterized in that: Two symmetrically distributed sliding sleeves (68) are fixed on the top of the first frame (61); the sliding sleeves (68) are slidably matched with the sliding frame (7) and are locked by a second fastener (69); a slot hole (71) is provided on the sliding frame (7); and the second fastener (69) passes through the slot hole (71).

4. A special equipment detection device for testing the rigidity of a crane according to claim 3, characterized in that: An actuating cylinder (11) is fixed on the top of the frame (1), and a pressing block (12) is fixed on the end of the piston rod of the actuating cylinder (11).

5. A special equipment detection device for testing the rigidity of a crane according to claim 4, characterized in that: The first walking trolley (2) comprises a first walking frame (21), first walking wheels (22) and a first driving assembly (23); four first walking wheels (22) distributed in a matrix are arranged at the bottom of the first walking frame (21); the first walking wheels (22) are automatically moved by the first driving assembly (23); and the first walking wheels (22) cooperate with the first track (3).

6. A special equipment detection device for testing the rigidity of a crane according to claim 5, characterized in that: The second walking trolley (4) comprises a second walking frame (41), second walking wheels (42) and a second driving assembly (43). Four second walking wheels (42) distributed in a matrix are arranged at the bottom of the second walking frame (41). The second walking wheels (42) are automatically walked by the second driving assembly (43). The second walking wheels (42) cooperate with the second track (5). A hydraulic cylinder (44) is fixed at the top center of the second walking frame (41). The piston rod of the hydraulic cylinder (44) is fixedly connected to the bottom center of the top plate (45). Guide rods (46) are fixed at the four corners of the bottom of the top plate (45). The guide rods (46) are slidably matched with guide sleeves (47). The guide sleeves (47) are fixed at the four corners of the top of the second walking frame (41). A limit strip (48) is arranged at the top of the top plate (45).

7. A special equipment detection device for testing the rigidity of a crane according to claim 6, characterized in that: A clamping mechanism (8) is provided on the top of the first walking trolley (2), and the clamping mechanism (8) includes two clamping plates (81). The two clamping plates (81) are symmetrically arranged on both sides of the first walking frame (21), and the outer side surface of the clamping plate (81) is fixedly connected to one end of an L-shaped connecting plate (82), and the other end of the L-shaped connecting plate (82) is hinged to a connecting seat (83) and locked by a third fastener (84).

8. A special equipment detection device for testing the rigidity of a crane according to claim 7, characterized in that: The connecting seat (83) is fixed on the top of the nut seat (85), and the nut seat (85) is movably sleeved on the screw rod (86). The screw rod (86) is supported by two bearing seats (87). A limit block (88) is fixed at the end of the screw rod (86). A first gear (89) is fixedly sleeved in the middle of the screw rod (86). The first gear (89) is meshed with a second gear (810). The second gear (810) is fixedly sleeved on the output shaft of the motor (811). The bearing seat (87) and the motor (811) are both fixed on the first walking frame (21).

9. A special equipment detection device for testing the rigidity of a crane according to claim 8, characterized in that: The screw rod (86) is configured as a bidirectional screw rod, and two nut seats (85) are provided. The two nut seats (85) are symmetrically arranged at different rotation directions of the screw rod (86).

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