Grab safety warning system based on big data

Abstract

The present application relates to grab bucket technology, used for solving the problem of low safety of grab bucket caused by exceeding the limit height, loosening of clamping and deviation of grab bucket during lifting of grab bucket, and particularly relates to a grab bucket safety warning system based on big data, which comprises a grab bucket travelling crane, a grab bucket base is slidably connected to the outer side of the grab bucket travelling crane, an equipment box is connected to the rear surface of the grab bucket base, and an audible and visual alarm is connected to one side of the outer side wall of the grab bucket base; during lifting of objects by the grab bucket, the grab bucket height limiting module, the grab bucket clamping module and the grab bucket swing module can respectively detect the change of the lifting height, the change of the clamping force of the grab bucket claw on the objects and whether the grab bucket swings during lifting of the objects, so that when the grab bucket lifts the objects, the problem of safety hazards caused by movement of the grab bucket beyond the safe range, loosening and falling of the clamped objects and swing of the grab bucket can be avoided.

Description

Technical Field

[0001] This invention relates to grab bucket technology, specifically a grab bucket safety warning system based on big data. Background Technology

[0002] A grab bucket is a special tool used by cranes to grab dry bulk goods. It consists of two or more bucket-shaped jaw plates that can be opened and closed to form a storage space. During loading, the jaw plates close in the material pile, and the material is grabbed into the storage space. During unloading, the jaw plates open while suspended above the material pile, and the material is scattered on the pile. The opening and closing of the jaw plates is generally controlled by the steel wire rope of the crane's hoisting mechanism.

[0003] During operation, the grab bucket mechanism may slide down naturally or be accidentally lowered without affecting the high-speed travel of the crane. As a result, crane operators may sometimes overlook the grab bucket. Due to operator negligence, the grab bucket may rise above the upper limit, causing damage to the upper part of the tank and the piping, thus creating a hidden danger to the safe operation of the electrolytic cell.

[0004] To address the aforementioned technical problems, this application proposes a solution. Summary of the Invention

[0005] The purpose of this invention is to enable the grab bucket height limiting module, grab bucket gripping module, and grab bucket swinging module to detect changes in the vertical movement height of the grab bucket during the lifting process, changes in the gripping force of the grab bucket claws on the object, and whether the grab bucket swings during the object lifting process. This ensures that when the grab bucket is grabbing an object, it will not cause safety hazards due to the grab bucket moving beyond the safe range, the gripped object loosening and falling, or the grab bucket swinging. This solves the problem of low grab bucket safety caused by exceeding the limit height, loosening of the grip, and grab bucket deviation during the lifting and lowering process, and proposes a grab bucket safety warning system based on big data.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A grab bucket safety warning system based on big data includes a grab bucket trolley, a grab bucket base slidably connected to the outer side of the grab bucket trolley, an equipment box connected to the rear surface of the grab bucket base, an audible and visual alarm connected to one side of the outer wall of the grab bucket base, a grab bucket top plate connected to the lower surface of the grab bucket base by a steel wire rope, a grab bucket chassis connected to the outer wall of the grab bucket top plate by grab bucket claws, and a grab bucket telescopic rod connected to the middle position of the upper surface of the grab bucket chassis. The system is characterized in that a rotating seat is integrally formed on one side of the inner wall of the grab bucket base, a steering plate is rotatably connected to the inner wall of the rotating seat by a screw, a crash barrier is connected to the lower end of the screw, and a traction spring is connected to one side of the outer wall of the steering plate.

[0008] The equipment box is equipped with a grab bucket height limiting module, a grab bucket gripping module, and a grab bucket swinging module.

[0009] The grab bucket height limit module is used to detect the distance between the grab bucket and the grab bucket base during the lifting and lowering process, process the detected distance value to obtain the height limit distance value H, compare the height limit distance value H with the preset distance range, and generate an alarm signal when the height limit distance value H is not within the preset distance range, and send it to the audible and visual alarm to trigger an alarm.

[0010] The grab gripping module is used to detect the pressure value between the grab gripper and the object after the object is stabilized and the pressure value between the grab gripper and the object during the movement of the object. The pressure value is processed to obtain the gripping pressure group Sa and the gripping pressure group Sb. The data of each group in the gripping pressure group Sa and the gripping pressure group Sb are compared with the data values ​​at the corresponding positions. When the comparison shows that the difference between the data in the gripping pressure group Sa and the gripping pressure group Sb is not within the preset pressure value range, the second warning signal is generated and sent to the audible and visual alarm to trigger an alarm.

[0011] The grab swing module is used to detect the winding angle value D generated by the wire rope winding device during the lifting and lowering of the grab bucket. The winding angle value D is processed to obtain the deflection angle J of the wire rope caused by external factors. The deflection angle J is compared with a preset angle value. When the comparison shows that the deflection angle J is equal to the preset angle value, a warning signal is generated and sent to the audible and visual alarm to trigger an alarm.

[0012] In a preferred embodiment of the present invention, four first infrared distance sensors are connected to the lower surface of the grab bucket base in four directions. The four first infrared distance sensors detect the vertical distance between the grab bucket base and the grab bucket top plate from four directions, and the average value of the vertical distance values ​​detected multiple times at the same position is calculated. The average value is recorded as the height limit distance value H.

[0013] In a preferred embodiment of the present invention, the grab claw consists of a grab claw support and a gripping plate. The grab claw support has a sliding hole. A sliding rod connected to the corresponding position of the sliding hole on the gripping plate can be inserted into the sliding hole and protrudes from the other end. A spring is connected to the outer wall of the protruding end. A pressure sensor connected at the gap between the grab claw support and the gripping plate can detect the pressure value between the grab claw support and the gripping plate. The pressure value detected on the corresponding grab claw is averaged multiple times, and the six pressure values ​​after processing are recorded as the gripping pressure group Sa (S1, S2, S3, S4, S5, S6). During the movement of the object by the grab claw, the six pressure values ​​detected between the grab claw support and the gripping plate are averaged multiple times and recorded as the gripping pressure group Sb (S1, S2, S3, S4, S5, S6).

[0014] In a preferred embodiment of the present invention, an angular velocity sensor is connected inside the equipment box at the position corresponding to the wire rope winding device. This sensor is used to detect the rotation angle during the winding process of the wire rope winding device and record the detected value as the winding angle value D. The wire rope layer-changing length generated when the wire rope is wound from the lower layer to the outer layer is a fixed value, which is detected by a measuring tape and recorded as the layer-changing length value Gc.

[0015] In a preferred embodiment of the present invention, the radius of the rotating shaft of the wire rope winding device is o, the radius of the wire rope is r, the length of one turn of the wire rope wound by the wire rope winding device corresponding to the number of layers is denoted as Gn, where n is a positive integer, the winding radius of the corresponding layer of wire rope is denoted as Rn = (o + nr), where n is a positive integer, the length of one turn of the corresponding layer of wire rope is Gn = 2πRn, that is, the length of one turn of the first layer of wire rope is G1 = 2πR1, the number of turns of wire rope that can be wound by the wire rope winding device in one layer is 5, then the length of the wire rope that can be wound by the wire rope winding device in one layer is 5Gn + Gc, and the total length of the wire rope is L = 5(G1 + G2 + G3 + G4 + G5) + 4Gc, which can be completely wound on the outside of the wire rope winding device in 5 layers.

[0016] In a preferred embodiment of the present invention, the grab swing module performs a detection step to determine whether skewness has occurred, as follows:

[0017] Step 1: Perform multiple tests on the vertical distance value detected by the first infrared distance sensor and take the average value. Record the average value as the height limit distance value H. During the lowering of the wire rope, the number of rotations of the wire rope winding device is the winding angle value D divided by the degree of a complete rotation, that is, the number of rotations C = (D / 360°).

[0018] Step 2: Divide the number of rotations C by the maximum number of rotations per layer, 5, to obtain the number of unwound layers of the wire rope. The total number of layers that can be wound on the outside of the wire rope winding device is 5, that is, the number of layers wound on the outside of the wire rope winding device is P = 5 - (C / 5), and the number of unwound layers is Q = (C / 5). The length of the wire rope that can be wound on the outside of the wire rope winding device is 5Gn + Gc. The value processing module can calculate the length g of the pulled-out wire rope through two methods: the number of outer winding layers P and the number of unwound layers Q.

[0019] Step 3: The value processing module compares the length of the pulled-out wire rope (g) with the height limit distance (H). When the length of the pulled-out wire rope (g) and the height limit distance (H) are equal, the grab bucket does not tilt. When the length of the pulled-out wire rope (g) is greater than the height limit distance (H), the grab bucket tilts. The tilt angle is specified in the calculation.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] During the lifting process, the grab bucket height limiting module, grab bucket gripping module, and grab bucket swinging module can detect changes in the vertical movement height of the grab bucket, changes in the gripping force of the grab bucket claws on the object, and whether the grab bucket swings during the lifting process. This ensures that the grab bucket does not cause safety hazards due to moving beyond the safe range, loosening and falling of the gripped object, or grab bucket swinging. Attached Figure Description

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a structural diagram of the main body of the present invention;

[0024] Figure 2 For the present invention Figure 1 A diagram of the structure viewed from below;

[0025] Figure 3 For the present invention Figure 2 Enlarged structural diagram of part A;

[0026] Figure 4 This is a flowchart of the present invention;

[0027] In the diagram: 1. Grab bucket crane; 2. Equipment box; 3. Grab bucket base; 4. Audible and visual alarm; 5. Grab bucket telescopic rod; 6. Grab bucket claw; 7. Grab bucket chassis; 8. Grab bucket top plate; 9. Traction spring; 10. Rotating seat; 11. Anti-collision baffle; 12. Screw; 13. Steering plate. Detailed Implementation

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1:

[0030] Please see Figure 1-4As shown, the grab bucket safety warning system based on big data includes a grab bucket trolley 1, a grab bucket base 3 slidably connected to the outside of the grab bucket trolley 1, an equipment box 2 connected to the rear surface of the grab bucket base 3, an audible and visual alarm 4 connected to one side of the outer wall of the grab bucket base 3, three red, yellow and green LED beads connected to the outside of the audible and visual alarm 4, a grab bucket top plate 8 connected to the lower surface of the grab bucket base 3 by a steel wire rope, a grab bucket base 7 connected to the outer wall of the grab bucket top plate 8 by a grab bucket claw 6, and a grab bucket telescopic rod 5 connected to the middle position of the upper surface of the grab bucket base 7. The system is characterized in that a rotating seat 10 is integrally formed on one side of the inner wall of the grab bucket base 3, a steering plate 13 is rotatably connected to the inner wall of the rotating seat 10 by a screw 12, an anti-collision baffle 11 is connected to the lower end of the screw 12, and a traction spring 9 is connected to one side of the outer wall of the steering plate 13.

[0031] The equipment box 2 is equipped with a grab bucket height limiting module, a grab bucket gripping module, and a grab bucket swinging module;

[0032] The grab bucket height limit module is used to detect the distance between the grab bucket and the grab bucket base 3 during the grab bucket's raising and lowering process, and to process the detected distance value to obtain the height limit distance value H. The height limit distance value H is compared with the preset distance range. When the comparison shows that the height limit distance value H is not within the preset distance range, an alarm signal is generated and sent to the audible and visual alarm 4 to trigger an alarm.

[0033] The grab gripping module is used to detect the pressure value between the grab gripper 6 and the object after the object is stabilized and the pressure value between the grab gripper 6 and the object during the movement of the object. The pressure value is processed to obtain the gripping pressure group Sa and the gripping pressure group Sb. The data of each group in the gripping pressure group Sa and the gripping pressure group Sb are compared according to the data value at the corresponding position. When the comparison shows that the difference between the data in the gripping pressure group Sa and the gripping pressure group Sb is not within the preset pressure value range, the second warning signal is generated and sent to the audible and visual alarm 4 to trigger an alarm.

[0034] The grab swing module is used to detect the winding angle value D generated by the wire rope winding device during the lifting and lowering of the grab bucket. The winding angle value D is processed to obtain the deflection angle J of the wire rope caused by external factors. The deflection angle J is compared with a preset angle value. When the comparison shows that the deflection angle J is equal to the preset angle value, a warning signal is generated and sent to the audible and visual alarm 4 to trigger an alarm.

[0035] The lower surface of the grab bucket base 3 is connected to four first infrared distance sensors in four directions. The four first infrared distance sensors detect the vertical distance between the grab bucket base 3 and the grab bucket top plate 8 from four directions, and calculate the average value of the vertical distance values ​​detected multiple times at the same position. The average value is recorded as the height limit distance value H.

[0036] In the process of collecting data detected by the four first infrared distance sensors, the grab bucket height limiting module collects multiple sets of data at the same time point. Each set of data contains four data points. The average of the four data points is calculated, and then the average of the multiple sets of data is calculated again to obtain the height limiting distance value H.

[0037] The minimum and maximum values ​​of the preset distance range are the distance values ​​between the upper limit position of the grab bucket and the lower limit position of the grab bucket and the first infrared distance sensor. Data between these two distance values ​​are all within the preset distance range.

[0038] If the height limit distance H is within the preset distance range, it means that the grab bucket's range of motion has not exceeded the upper and lower height limits, and the grab bucket's operation is unlikely to cause dangerous accidents.

[0039] If the height limit distance value H is not within the preset distance value range, it means that the movement of the grab bucket exceeds the safe range of movement. A warning signal is generated and sent to the audible and visual alarm 4 to issue an alarm. When the height limit distance value H is greater than the maximum value within the preset distance value range, the grab bucket exceeds the lower limit of the grab bucket movement. When the height limit distance value H is less than the minimum value within the preset distance value range, the grab bucket exceeds the upper limit of the grab bucket movement.

[0040] The timer inside the equipment box 2 detects the time taken during the lifting and lowering of the grab bucket and transmits the time data to the grab bucket height limit module. The grab bucket height limit module can obtain the height data of the grab bucket rising or falling at the same time intervals based on the time data. The height data value is divided by the time corresponding to the height data value to obtain the speed value of the grab bucket. The obtained speed value is compared with the preset speed value. The height limit distance value H corresponding to the speed value and the speed value are normalized and then the two values ​​are compared.

[0041] The preset speed value is the average speed at which the grab bucket rises or falls during normal operation.

[0042] If the processed speed value is greater than the preset speed value, and the ratio of the height limit distance H corresponding to the speed value to the speed value is less than 2, it means that the speed of the grab bucket is too fast during the lifting and lowering process, and it is about to collide with the upper limit of the grab bucket. A warning signal is generated and sent to the audible and visual alarm 4 to sound an alarm. The red light on the audible and visual alarm 4 will light up to inform the staff that the danger is high and an emergency stop operation should be performed.

[0043] If the processed speed value is greater than the preset speed value, and the ratio of the height limit distance H corresponding to the speed value to the speed value is greater than 2, it indicates that the speed of the grab bucket is relatively fast during the lifting and lowering process, and it will not collide with the upper limit of the grab bucket in a short time. A warning signal is generated and sent to the audible and visual alarm 4 to sound an alarm, and the yellow light on the audible and visual alarm 4 lights up to warn the staff to operate.

[0044] If the processed speed value is less than the preset speed value, and the ratio of the height limit distance H corresponding to the speed value to the speed value is less than 2, it means that the speed of the grab bucket is slow during the upward and downward process, but it is about to collide with the upper limit of the grab bucket. A warning signal is generated and sent to the audible and visual alarm 4 to sound an alarm. The green light on the audible and visual alarm 4 lights up to warn the staff.

[0045] The grab claw 6 consists of a grab claw support and a gripping plate. The grab claw support has a sliding hole. A sliding rod connected to the corresponding sliding hole on the gripping plate can be inserted into the sliding hole and protrudes from the other end. A spring is connected to the outer wall of the protruding end. A pressure sensor connected at the gap between the grab claw support and the gripping plate can detect the pressure value between the grab claw support and the gripping plate. The pressure value detected on the corresponding grab claw 6 is averaged multiple times, and the six pressure values ​​after processing are recorded as the gripping pressure group Sa (S1, S2, S3, S4, S5, S6). During the movement of the object by the grab claw 6, the six pressure values ​​detected between the grab claw support and the gripping plate are averaged multiple times and recorded as the gripping pressure group Sb (S1, S2, S3, S4, S5, S6).

[0046] After the grab gripper 6 stabilizes the object, the grab module collects pressure data through the pressure sensor between the grab gripper bracket and the gripping plate. During the collection process, multiple sets of data are collected at the same time point, and the pressure values ​​collected on each grab gripper 6 are averaged. Then, the pressure values ​​on each grab gripper 6 are collected and averaged during the movement of the grab. Finally, the data at the corresponding grab gripper 6 positions on the two gripping pressure groups Sa and Sb are compared.

[0047] If the data difference at position 6 of the gripper claw in gripping pressure group Sa and gripping pressure group Sb is within the preset range, it indicates that the gripper claw is gripping the object stably.

[0048] If the data difference between the gripper 6 position in the gripping pressure group Sa and the gripping pressure group Sb is not within the preset range, it indicates that the gripper has loosened at a certain point in the gripping of the object, the gripping force on the object has changed, and the object is in danger of falling off the gripper 6. A warning signal is generated and sent to the audible and visual alarm 4 to sound an alarm.

[0049] An angular velocity sensor is connected inside equipment box 2 at the location corresponding to the wire rope winding equipment. This sensor detects the rotation angle during the winding process and records the detected value as the winding angle value D. The wire rope layer-changing length generated when the wire rope changes layers from the lower to the outermost layer is a fixed value, measured with a measuring tape, and recorded as the layer-changing length value Gc. The radius of the wire rope winding equipment's shaft is o, the radius of the wire rope is r, and the length of one turn of the wire rope corresponding to the number of layers is recorded as Gn. Let n be a positive integer. The radius of the wire rope winding corresponding to the number of layers is denoted as Rn = (o + nr), where n is a positive integer. The length of one turn of the wire rope winding corresponding to the number of layers is Gn = 2πRn, that is, the length of one turn of the first layer of wire rope is G1 = 2πR1. The number of turns of wire rope that can be wound in one layer of the wire rope winding equipment is 5. Then the length of the wire rope that can be wound in one layer of the wire rope winding equipment is 5Gn + Gc. The total length of the wire rope is L = 5(G1 + G2 + G3 + G4 + G5) + 4Gc, which can be completely wound in 5 layers on the outside of the wire rope winding equipment.

[0050] The grab swing module performs the following steps to detect whether skew has occurred:

[0051] Step 1: Sum the vertical distance values ​​detected by the first infrared distance sensor and take the average value. Record the average value as the height limit distance value H. During the lowering of the wire rope, the number of rotations of the wire rope winding device is the winding angle value D divided by the degree of one full rotation, that is, the number of rotations C = (D / 360°).

[0052] Step 2: Divide the number of rotations C by the maximum number of rotations per layer, 5, to obtain the number of unwound layers of the wire rope. The total number of layers that can be wound on the outside of the wire rope winding device is 5, that is, the number of layers wound on the outside of the wire rope winding device is P = 5 - (C / 5), and the number of unwound layers is Q = (C / 5). The length of the wire rope that can be wound on the outside of the wire rope winding device is 5Gn + Gc. The value processing module can calculate the length g of the pulled-out wire rope through two methods: the number of outer winding layers P and the number of unwound layers Q.

[0053] The length g of the wire rope is determined based on the number of outer winding layers P:

[0054] If P≥4, then g=C×G5;

[0055] If P≥3 and P≤4, then g=(C-5)×G4+5G5+Gc;

[0056] If P≥2 and P≤3, then g=(C-10)×G3+5(G5+G4)+2Gc;

[0057] If P≥1 and P≤2, then g=(C-15)×G2+5(G5+G4+G3)+3Gc;

[0058] If P≤1, then g=(C-20)×G1+5(G5+G4+G3+G2)+4Gc;

[0059] The length g of the wire rope is obtained based on the number of layers Q that have been untied:

[0060] If Q≤1, then g=L-((C-20)×G1+5(G5+G4+G3+G2)+4Gc)=(25-C)×G1;

[0061] If Q≥1 and Q≤2, then g=L-((C-15)×G2+5(G5+G4+G3)+3Gc)=(20-C)×G2+5G1+Gc;

[0062] If Q≥2 and Q≤3, then g=L-((C-10)×G3+5(G5+G4)+2Gc)=(15-C)×G3+5(G1+G2)+2Gc;

[0063] If Q≥3 and Q≤4, then g=L-((C-5)×G4+5G5+Gc)=(10-C)×G4+5(G1+G2+G3)+3Gc;

[0064] If Q≥4, then g=L-(C×G5)=(5-C)×G5+5(G1+G2+G3+G4)+4Gc;

[0065] Step 3: The value processing module compares the length of the pulled-out wire rope (g) with the height limit distance (H). When the length of the pulled-out wire rope (g) and the height limit distance (H) are equal, the grab bucket does not tilt. When the length of the pulled-out wire rope (g) is greater than the height limit distance (H), the grab bucket tilts. The tilt angle is specified in the calculation.

[0066] When in use, the grab bucket height limiting module collects the grab bucket lifting height value detected by the first infrared distance sensor, and performs multiple average values ​​to obtain the height limiting distance value H. If the height limiting distance value H is within the grab bucket height limiting range, the grab bucket moves within the range between the upper and lower limits. If the grab bucket lifting height value is not within the preset distance range, an alarm signal is generated and sent to the audible and visual alarm 4 to alarm and inform the staff that there is a potential safety hazard during the grab bucket operation.

[0067] The grab gripping module collects the pressure value between the grab gripper bracket and the gripping plate after the object is stabilized by the pressure sensor on the grab gripper 6. The pressure value detected on the corresponding grab gripper 6 is averaged multiple times. After the value acquisition module transmits the pressure value collected during the grab lifting and movement to the value processing module, the six pressure values ​​detected between the grab gripper bracket and the gripping plate during the position movement of the grab gripper 6 are averaged multiple times. Then, the data at the corresponding grab gripper 6 positions on the two gripping pressure groups Sa and Sb are compared. If the comparison shows that the value change before and after is within the preset range, the gripping force of the grab gripper 6 has not loosened. If the comparison shows that the value change before and after is not within the preset range, the gripping force of the grab gripper 6 has loosened, and there is a risk that the object grabbed by the grab gripper will detach from the grab gripper. A second warning signal is generated and sent to the audible and visual alarm 4 to alert the staff that the object being gripped will fall.

[0068] The grab bucket swing module collects the angular velocity values ​​from the angular velocity sensor on the wire rope winding equipment. It then averages multiple angular velocity values ​​collected at the same time point to calculate the winding angle value D. Using existing formulas, it calculates the length g of the wire rope pulled out during the winding process. Finally, it calls the height limit distance H obtained from the grab bucket height limit module and compares the pulled-out wire rope length g with the height limit distance H representing the vertical height of the wire rope's descent. If the pulled-out wire rope length g equals the height limit distance H, then... If the grab bucket lifted by the wire rope does not shift position, but the length g of the pulled-out wire rope is greater than the height limit distance H, then the grab bucket will shift position, generating three warning signals and sending them to the audible and visual alarm 4 for alarm. Furthermore, the distance between the lower end of the wire rope and the center of gravity of the shift can be calculated using the Pythagorean theorem, and the angle of inclination J of the wire rope caused by external factors can be calculated by the ratio of the lengths of the three sides of the right triangle formed by the wire rope length, the distance of the center of gravity of the shift, and the vertical height distance.

[0069] If J≥0°, the grab swing module generates three warning signals and sends them to the audible and visual alarm 4 to sound an alarm. The green LED on the audible and visual alarm 4 will light up to warn the staff.

[0070] If J≥15°, the grab swing module generates three warning signals and sends them to the audible and visual alarm 4 to sound an alarm. The yellow LED on the audible and visual alarm 4 will light up to warn the staff to take action.

[0071] If J≥30°, the grab swing module generates three warning signals and sends them to the audible and visual alarm 4 to sound an alarm. The red LED on the audible and visual alarm 4 will light up to inform the staff that the danger is high and an emergency stop should be performed.

[0072] During the lifting and moving of objects, the grab bucket can intelligently detect the height of the grab bucket movement, the clamping force on the object, and the swing amplitude through the grab bucket height limiting module, grab bucket clamping module, and grab bucket swinging module. This makes the grabbing between teams more stable and safer during the lifting process, reducing the risk of accidents.

[0073] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A grab bucket safety warning system based on big data, comprising a grab bucket trolley (1), a grab bucket base (3) slidably connected to the outer side of the grab bucket trolley (1), an equipment box (2) connected to the rear surface of the grab bucket base (3), an audible and visual alarm (4) connected to one side of the outer wall of the grab bucket base (3), a grab bucket top plate (8) connected to the lower surface of the grab bucket base (3) by a steel wire rope, a grab bucket chassis (7) connected to the outer wall of the grab bucket top plate (8) by a grab bucket claw (6), and a grab bucket telescopic rod (5) connected to the middle position of the upper surface of the grab bucket chassis (7), characterized in that, The grab bucket base (3) has a rotating seat (10) integrally formed on one side of its inner wall. The rotating seat (10) has a steering plate (13) rotatably connected to its inner wall via a screw (12). The lower end of the screw (12) is connected to a crash baffle (11). The steering plate (13) has a traction spring (9) connected to one side of its outer wall. The equipment box (2) is equipped with a grab bucket height limiting module, a grab bucket clamping module and a grab bucket swinging module; The grab bucket height limit module is used to detect the distance between the grab bucket and the grab bucket base (3) during the grab bucket's ascent and descent, and to process the detected distance value to obtain the height limit distance value H. The height limit distance value H is compared with the preset distance range. When the comparison shows that the height limit distance value H is not within the preset distance range, an alarm signal is generated and sent to the audible and visual alarm (4) to trigger an alarm. The grab gripping module is used to detect the pressure value between the grab gripper (6) and the object after the object is stabilized and the pressure value between the grab gripper (6) and the object during the movement of the object. The pressure value is processed to obtain the gripping pressure group Sa and the gripping pressure group Sb respectively. The data of each group in the gripping pressure group Sa and the gripping pressure group Sb are compared according to the data value at the corresponding position. When the comparison shows that the difference between the data in the gripping pressure group Sa and the gripping pressure group Sb is not within the preset pressure value range, the second warning signal is generated and sent to the audible and visual alarm (4) to alarm. The grab swing module is used to detect the winding angle value D generated by the wire rope winding device during the lifting and lowering of the grab bucket. The winding angle value D is processed to obtain the deflection angle J of the wire rope caused by external factors. The deflection angle J is compared with the preset angle value. When the comparison shows that the deflection angle J is equal to the preset angle value, a warning signal is generated and sent to the sound and light alarm (4) to trigger an alarm.

2. The grab bucket safety warning system based on big data according to claim 1, characterized in that, The grab claw (6) consists of a grab claw support and a gripping plate. The grab claw support has a sliding hole. The sliding rod connected to the corresponding sliding hole on the gripping plate can be inserted into the sliding hole and protruded from the other end. A spring is connected to the outer wall of the protruding end. The pressure sensor connected at the gap between the grab claw support and the gripping plate can detect the pressure value between the grab claw support and the gripping plate. The pressure value detected on the corresponding grab claw (6) is averaged multiple times, and the six pressure values ​​after processing are recorded as the gripping pressure group Sa (S1, S2, S3, S4, S5, S6). The six pressure values ​​detected between the grab claw support and the gripping plate during the movement of the grab claw (6) gripping the object are averaged multiple times and recorded as the gripping pressure group Sb (S1, S2, S3, S4, S5, S6).

3. The grab bucket safety warning system based on big data according to claim 2, characterized in that, An angular velocity sensor is connected inside the equipment box (2) at the position corresponding to the wire rope winding equipment. It is used to detect the rotation angle during the winding process of the wire rope winding equipment and record the detected value as the winding angle value D. The wire rope layer change length generated when the wire rope is wound from the lower layer to the outer layer is a fixed value. It is detected by a tape measure and the detected length value is recorded as the layer change length value Gc.

4. The grab bucket safety warning system based on big data according to claim 3, characterized in that, The radius of the rotating shaft of the wire rope winding equipment is o, the radius of the wire rope is r, the length of one turn of the wire rope wound by the wire rope winding equipment corresponding to the number of layers is denoted as Gn, where n is a positive integer, the winding radius of the corresponding layer of wire rope is denoted as Rn = (o + nr), where n is a positive integer, the length of one turn of the corresponding layer of wire rope is Gn = 2πRn, that is, the length of one turn of the first layer of wire rope is G1 = 2πR1. The number of turns of wire rope that can be wound by the wire rope winding equipment in one layer is 5, then the length of the wire rope that can be wound by the wire rope winding equipment in one layer is 5Gn + Gc, and the total length of the wire rope is L = 5(G1 + G2 + G3 + G4 + G5) + 4Gc, which can be completely wound on the outside of the wire rope winding equipment in 5 layers.

5. The grab bucket safety warning system based on big data according to claim 4, characterized in that, The grab swing module performs the following steps to detect whether skew has occurred: Step 1: Perform multiple tests on the vertical distance value detected by the first infrared distance sensor and take the average value. Record the average value as the height limit distance value H. During the lowering of the wire rope, the number of rotations of the wire rope winding device is the winding angle value D divided by the degree of a complete rotation, that is, the number of rotations C = (D / 360°). Step 2: Divide the number of rotations C by the maximum number of rotations per layer, 5, to obtain the number of unwound layers of the wire rope. The total number of layers that can be wound on the outside of the wire rope winding device is 5, that is, the number of layers wound on the outside of the wire rope winding device is P = 5 - (C / 5), and the number of unwound layers is Q = (C / 5). The length of the wire rope that can be wound on the outside of the wire rope winding device is 5Gn + Gc. The value processing module can calculate the length g of the pulled-out wire rope through two methods: the number of outer winding layers P and the number of unwound layers Q. Step 3: The value processing module compares the length of the pulled-out wire rope (g) with the height limit distance (H). When the length of the pulled-out wire rope (g) and the height limit distance (H) are equal, the grab bucket does not tilt. When the length of the pulled-out wire rope (g) is greater than the height limit distance (H), the grab bucket tilts. The tilt angle is specified in the calculation. .

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