A crane sling swing angle monitoring device
By adopting a combination of mechanical linkage structure and displacement sensors in the crane, real-time high-precision measurement of the sway angle of the spreader is achieved, solving the problems of the reduction in accuracy and high cost of inertial navigation devices in harsh environments in the prior art, and improving the measurement accuracy and service life of the wire rope.
Patent Information
- Application Number
- CN202520356760.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2035-03-04
AI Technical Summary
The existing crane spreader swing monitoring methods have reduced accuracy in harsh environments, and the inertial navigation device is expensive, complex installation, and difficult to maintain.
The mechanical linkage structure including a second mounting frame, a transverse slider, a longitudinal slider and a guide mechanism is adopted, and combined with the first displacement sensor and the second displacement sensor, the swing angle of the spreader is measured in real time with high accuracy and the angle is calculated through geometric relationships.
Real-time high-precision measurement of the swing angle of the spreader in various crane operation scenarios is achieved. The structure is simple and reliable, with strong anti-interference, and it reduces the swing and wear of the wire rope, improving the measurement accuracy and service life of the wire rope.
Smart Images
Figure CN222699880U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cranes, in particular to a device for monitoring the swing angle of a crane hoist. Background Art
[0002] During crane hoisting operations, the swing of the hoisting equipment has always been a major hidden danger affecting operational efficiency and safety. Existing hoisting equipment swing monitoring methods mostly use visual recognition or inertial navigation technology, but these solutions have the following defects: the visual recognition system relies on high-definition cameras and complex algorithms, which are easily disturbed in harsh environments such as rain, fog, and dust, resulting in reduced monitoring accuracy; the inertial navigation device requires high-precision gyroscopes and accelerometers, which are expensive, complex to install, and difficult to maintain. Therefore, there are still shortcomings and deficiencies in the existing technology. Utility Model Content
[0003] The utility model provides a crane hoist swing angle monitoring device to solve the problems raised in the background technology.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a crane hoist swing angle monitoring device, comprising a first installation frame, a horizontally arranged second installation frame is installed below the first installation frame, a vertical pole is fixedly connected between the second installation frame and the first installation frame, a guide mechanism for constraining the swing of the wire rope is arranged between the second installation frame and the first installation frame, a transverse slider is slidably connected in the second installation frame, a first through hole is vertically opened in the middle of the transverse slider, a longitudinal slider is slidably connected in the first through hole, and a second through hole is vertically opened on the longitudinal slider; a first displacement sensor corresponding to the side position of the transverse slider is installed in the second installation frame, and a second displacement sensor corresponding to the side position of the longitudinal slider is installed in the first through hole.
[0005] Preferably, two oppositely arranged transverse slideways are provided on the inner side wall of the second installation frame, and both ends of the transverse sliding block are located in the transverse slideways and are slidably connected to the transverse slideways.
[0006] Preferably, two longitudinal slideways arranged opposite to each other are provided on the inner side wall of the first through hole, the longitudinal slideways are perpendicular to the transverse slideways, and both ends of the longitudinal slide block are located in the longitudinal slideways and are slidably connected to the longitudinal slideways.
[0007] Preferably, a transverse limit block is provided at one end of the transverse slideway close to the first displacement sensor, and a longitudinal limit block is provided at one end of the longitudinal slideway close to the second displacement sensor.
[0008] Preferably, the guide mechanism includes a horizontally arranged mounting plate, which is fixedly connected to the vertical pole, a third through hole is vertically opened in the middle of the mounting plate, two oppositely arranged first fixed pulleys are rotatably connected in the third through hole, and a first gap is left between the two first fixed pulleys.
[0009] Preferably, two second fixed pulleys which are oppositely arranged are rotatably connected in the second through hole, and a second gap is left between the two second fixed pulleys.
[0010] The beneficial effects of the utility model are as follows: (1) the utility model realizes real-time and high-precision measurement of the swing angle of the sling through the mechanical linkage of the second mounting frame, the transverse slider and the longitudinal slider, combined with the guide mechanism. In addition, the displacement of the transverse slider and the longitudinal slider is directly monitored by the first displacement sensor and the second displacement sensor, and the angle is calculated based on the geometric relationship. The structure is simple and reliable, with strong anti-interference ability, and is suitable for various crane operation scenarios; (2) by setting the first gap, the position of the wire rope can be constrained, thereby reducing the swing of the wire rope when the drum is reeled in and out, thereby improving the measurement accuracy of the device; (3) by setting the second fixed pulley, the wear of the second through hole on the wire rope can be reduced, thereby extending the service life of the wire rope. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of the utility model;
[0012] Figure 2 This is a schematic diagram of the structure of the second installation frame of the utility model from a top view;
[0013] Figure 3 It is a schematic diagram of the structure of the utility model installed on the bottom surface of the lifting trolley.
[0014] Figure numerals: 1. first mounting frame, 2. second mounting frame, 3. vertical pole, 4. wire rope, 5. guide mechanism, 51. mounting plate, 52. third through hole, 53. first fixed pulley, 6. transverse slider, 7. transverse slide, 8. first through hole, 9. longitudinal slider, 10. longitudinal slide, 11. second through hole, 12. first displacement sensor, 13. second displacement sensor, 14. lifting trolley, 15. drum, 16. sling, 17. transverse limit block, 18. longitudinal limit block, 19. second fixed pulley. DETAILED DESCRIPTION
[0015] The utility model is further described below in conjunction with the accompanying drawings.
[0016] like Figure 1-3As shown, the utility model provides a crane hoist swing angle monitoring device, including a first installation frame 1, a second installation frame 2 arranged horizontally is installed below the first installation frame 1, a vertical pole 3 is fixedly connected between the second installation frame 2 and the first installation frame 1, a guide mechanism 5 for restricting the swing of a wire rope 4 is arranged between the second installation frame 2 and the first installation frame 1, a transverse sliding block 6 is slidably connected in the second installation frame 2, two oppositely arranged transverse sliding ways 7 are provided on the inner side wall of the second installation frame 2, two ends of the transverse sliding block 6 are located in the transverse sliding way 7 and are slidably connected to the transverse sliding way 7, a first through hole 8 is vertically provided in the middle of the transverse sliding block 6, a longitudinal sliding block 9 is slidably connected in the first through hole 8, and two oppositely arranged transverse sliding ways 7 are provided on the inner side wall of the first through hole 8 A longitudinal slide 10 is perpendicular to the transverse slide 7. Both ends of the longitudinal slider 9 are located in the longitudinal slide 10 and are slidably connected to the longitudinal slide 10. A second through hole 11 is vertically opened on the longitudinal slider 9. A first displacement sensor 12 corresponding to the side position of the transverse slider 6 is installed in the second installation frame 2. The first displacement sensor 12 is located at one end of the transverse slide 7. The first displacement sensor 12 adopts a micro laser sensor to monitor the displacement x of the transverse slider 6. A second displacement sensor 13 corresponding to the side position of the longitudinal slider 9 is installed in the first through hole 8. The second displacement sensor 13 is located at one end of the longitudinal slide 10. The second displacement sensor 13 adopts a micro laser sensor to monitor the displacement y of the longitudinal slider 9.
[0017] Specifically, Figure 3As shown, the first mounting frame 1 is fixed to the bottom surface of the lifting trolley 14 by bolts. After the wire rope 4 is led out from the drum 15 on the top of the lifting trolley 14, it passes through the second through hole 11 of the guide mechanism 5 in sequence, and is finally connected to the sling 16. The first displacement sensor 12 and the second displacement sensor 13 are connected to the crane control system through the CAN bus. The lifting trolley 14, the drum 15 and the crane control system are prior arts and are not described here in detail. When in use, when the sling 16 is stationary, the vertical distance h from the center of the longitudinal sliding block 9 to the guide mechanism 5 is measured. When the sling 16 swings left and right, the wire rope 4 pushes the transverse sliding block 6 to slide along the transverse sliding track 7 through the longitudinal sliding block 9. The first displacement sensor 12 monitors the displacement x. When the sling 16 swings back and forth, the wire rope 4 pushes the longitudinal sliding block 9 to slide along the longitudinal sliding track 10. The second displacement sensor 13 monitors the displacement y. After the h value is input into the crane control system, the control system can calculate the swing angle of the spreader 16 according to the data transmitted by the first displacement sensor 12 and the second displacement sensor 13. The left and right swing angle calculation formula is: α=arctan(x / h), and the front and rear swing angle calculation formula is: β=arctan(y / h). The utility model realizes real-time and high-precision measurement of the swing angle of the spreader 16 through the mechanical linkage of the second installation frame 2, the transverse sliding block 6 and the longitudinal sliding block 9 in combination with the guide mechanism 5. In addition, the displacement of the transverse sliding block 6 and the longitudinal sliding block 9 is directly monitored by the first displacement sensor 12 and the second displacement sensor 13, and the angle is calculated based on the geometric relationship. The structure is simple and reliable, and the anti-interference ability is strong. It is suitable for various crane operation scenarios.
[0018] In some embodiments, a transverse limit block 17 is provided at one end of the transverse slide 7 close to the first displacement sensor 12. The transverse limit block 17 can effectively limit the extreme displacement range of the transverse slider 6, thereby preventing the transverse slider 6 from colliding with the first displacement sensor 12 during movement, thereby ensuring the safety of the first displacement sensor 12 and the long-term stable operation of the device; a longitudinal limit block 18 is provided at one end of the longitudinal slide 10 close to the second displacement sensor 13. The longitudinal limit block 18 can effectively limit the extreme displacement range of the longitudinal slider 9, thereby preventing the longitudinal slider 9 from colliding with the second displacement sensor 13 during movement, thereby ensuring the safety of the second displacement sensor 13 and the long-term stable operation of the device.
[0019] In some embodiments, the guide mechanism 5 includes a horizontally arranged mounting plate 51, the mounting plate 51 is fixedly connected to the vertical pole 3, a third through hole 52 is vertically opened in the middle of the mounting plate 51, two first fixed pulleys 53 arranged opposite to each other are rotatably connected in the third through hole 52, and a first gap is left between the two first fixed pulleys 53. Specifically, the wire rope 4 will swing when the crane drum 15 is wound and unwound. When in use, the wire rope 4 is passed through the first gap, and the first gap can constrain the position of the wire rope 4, thereby reducing the swing of the wire rope 4, thereby improving the measurement accuracy of the device.
[0020] In some embodiments, two second fixed pulleys 19 arranged opposite to each other are rotatably connected in the second through hole 11, and a second gap is left between the two second fixed pulleys 19. Specifically, when in use, the steel wire rope 4 passes through the second gap, and the second fixed pulley 19 can reduce the wear of the steel wire rope 4 by the second through hole 11, thereby extending the service life of the steel wire rope 4.
[0021] The above embodiments can be combined with each other.
[0022] The above embodiments do not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.
Claims
1. A crane sling swing angle monitoring device, comprising a first mounting frame, characterized in that: A horizontally arranged second installation frame is installed below the first installation frame, a vertical pole is fixedly connected between the second installation frame and the first installation frame, a guide mechanism for restraining the swing of the wire rope is provided between the second installation frame and the first installation frame, a transverse slider is slidably connected in the second installation frame, a first through hole is vertically opened in the middle of the transverse slider, a longitudinal slider is slidably connected in the first through hole, and a second through hole is vertically opened on the longitudinal slider; a first displacement sensor corresponding to the side position of the transverse slider is installed in the second installation frame, and a second displacement sensor corresponding to the side position of the longitudinal slider is installed in the first through hole.
2. A crane sling swing angle monitoring device according to claim 1, characterized in that: Two oppositely arranged transverse slideways are provided on the inner side wall of the second installation frame, and two ends of the transverse sliding block are located in the transverse sliding slideways and are slidably connected to the transverse sliding slideways.
3. A crane sling swing angle monitoring device according to claim 2, characterized in that: Two longitudinal slideways are arranged opposite to each other on the inner side wall of the first through hole. The longitudinal slideways are perpendicular to the transverse slideways. Both ends of the longitudinal sliding block are located in the longitudinal slideways and are slidably connected to the longitudinal slideways.
4. A crane sling swing angle monitoring device according to claim 3, characterized in that: A transverse limit block is provided at one end of the transverse slideway close to the first displacement sensor, and a longitudinal limit block is provided at one end of the longitudinal slideway close to the second displacement sensor.
5. The crane sling swing angle monitoring device according to claim 1 is characterized in that: The guide mechanism includes a horizontally arranged mounting plate, which is fixedly connected to the vertical pole, a third through hole is vertically opened in the middle of the mounting plate, two first fixed pulleys arranged opposite to each other are rotatably connected in the third through hole, and a first gap is left between the two first fixed pulleys.
6. The crane sling swing angle monitoring device according to claim 1, characterized in that: Two second fixed pulleys which are arranged opposite to each other are rotatably connected in the second through hole, and a second gap is left between the two second fixed pulleys.