Intelligent lifting appliance leveling device for crane and operation method of intelligent lifting appliance leveling device

Abstract

The invention belongs to the technical field of lifting appliances of cranes, and particularly relates to an intelligent lifting appliance leveling device of a crane and an operation method of the intelligent lifting appliance leveling device. First grooves are formed in the two sides of the transverse frame; an adjusting plate is slidably connected into the first groove; a lifting hook is arranged at the bottom end of the end part of the adjusting plate; first sliding grooves are formed in the side walls of the two sides of the first groove. Rack plates are fixedly connected into the first sliding grooves. A first through groove is formed in a plate, close to the bottom of the first groove, of the adjusting plate; a pair of symmetrically-distributed first gears is rotationally connected into the first through groove, and the pair of first gears are meshed with each other. The pair of first gears is engaged with the rack plates in the first sliding grooves in the two sides correspondingly. A pair of sliding through grooves which are symmetrically distributed about the center point of the transverse frame are formed in the top end of the transverse frame, and the sliding through grooves communicate with the first groove; the problem that an object cannot be kept balanced and stable when lifted by a lifting appliance is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of crane lifting appliances, and specifically relates to an intelligent leveling device for a crane lifting appliance and an operation method thereof. Background Art

[0002] A crane refers to a multi-action lifting machine that vertically lifts and horizontally transports heavy objects within a certain range. Among them, a lifting appliance is a key device used for grasping, fixing, and transporting heavy objects during lifting operations.

[0003] In the prior art, when an item is generally lifted by a lifting appliance, after the item is tied with ropes, the weights at both ends of the item are not balanced, which will cause the item to be in an unbalanced state. Some non-fixed sundries inside the item will also slide. If the sundries are fragile, they will break. At the same time, the sliding of the sundries will also cause the lifting appliance to shake after being lifted, affecting the overall lifting balance.

[0004] Therefore, the present invention provides an intelligent leveling device for a crane lifting appliance and an operation method thereof. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve the problem that the lifting appliance cannot keep the object balanced and stable when lifting an object, the present invention proposes an intelligent leveling device for a crane lifting appliance and an operation method thereof.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: An intelligent leveling device for a crane lifting appliance according to the present invention includes a cross frame; first grooves are provided on both sides of the cross frame; a regulating plate is slidably connected in the first grooves; a hook is provided at the bottom end of the end of the regulating plate; first sliding grooves are provided on the side walls of both sides of the first grooves; a rack plate is fixedly connected in each of the first sliding grooves; a first through groove is provided in the plate of the regulating plate close to the bottom of the first groove; a pair of symmetrically distributed first gears are rotatably connected in the first through groove, and the pair of first gears mesh with each other; the pair of first gears respectively mesh with the rack plates in the first sliding grooves on both sides; a pair of sliding through grooves symmetrically distributed about the center point of the cross frame are provided at the top of the cross frame, and the sliding through grooves communicate with the first grooves; a pair of first servo motors symmetrically distributed about the center point of the cross frame are provided on the cross frame. The first servo motor is fixedly connected to the regulating plate through a connecting column, and the output of the first servo motor is provided with a first rotating shaft. The first rotating shaft is rotatably connected to the regulating plate through the sliding through groove, and the bottom end of the first rotating shaft is connected to the first gear; a horizontal regulator is provided on the regulating plate; a hanging plate is provided at the top of the cross frame, and a set of lifting ropes are provided on the hanging plate, and the positions of the set of lifting ropes are arranged in a square shape.

[0007] Preferably, the horizontal adjuster includes a second groove; a second groove is formed at the top end of the adjusting plate; a glass plate is fixedly connected to the opening of the second groove; the cross-section between the glass plate and the second groove is circular; a rolling ball slides between the glass plate and the second groove; pressure sensors are fixedly connected to the side walls on both sides of the second groove; a distance sensor is fixedly connected to the bottom of the first groove; the top view cross-section and the front view cross-section of the first groove are both convex; a set of rollers are provided on both side walls of the adjusting plate close to the bottom of the first groove, and the rollers are in contact with the side walls of the first groove.

[0008] Preferably, a concave cavity is formed in the end of the adjusting plate away from the bottom of the first groove; second through grooves are formed on both side walls of the second groove; the second through grooves communicate with the concave cavity; U-shaped plates are fixedly connected to both side walls of the concave cavity through springs, and the openings of a pair of U-shaped plates are arranged oppositely; the position of the upper horizontal plate of the U-shaped plate corresponds to the position of the second through groove; a pressing plate is slidably connected to both side walls of the concave cavity, and the pressing plate is located between a pair of U-shaped plates; the bottom end of the pressing plate is fixedly connected to the bottom end of the concave cavity through a spring; a pressing block is fixedly connected to the bottom end of the pressing plate; the top end of the hook extends into the concave cavity and is installed on the pressing block; the pressing plate pushes the U-shaped plate to move through a pushing unit.

[0009] Preferably, the pushing unit includes a pushing plate; an inverted right trapezoidal groove is formed at the top end of the lower horizontal plate of the U-shaped plate; a pair of pushing plates symmetrically distributed with respect to the pressing block are fixedly connected to the pressing plate; the bottom end of the pushing plate is arc-shaped, and the bottom end of the pushing plate is located in the inverted right trapezoidal groove and is in contact with the inner inclined surface of the inverted right trapezoidal groove.

[0010] Preferably, a pair of symmetrically distributed inverted T-shaped sliding grooves are formed at the top end of the cross frame; the hanging plate is inverted U-shaped; the bottom ends on both sides of the hanging plate slide in the corresponding inverted T-shaped sliding grooves, and the bottom view of the bottom end of the hanging plate is inverted T-shaped; a set of positioning grooves are formed at the top end of the cross frame; an inverted U-shaped column is provided at the top end of the hanging plate, and the inverted U-shaped column penetrates through the hanging plate; a threaded column is rotatably connected to the middle of the hanging plate, and the threaded column is threadedly connected to the middle of the inverted U-shaped column.

[0011] Preferably, trapezoidal through grooves are formed at the four corners of the cross frame, and the inclined surface angle of the side wall of the trapezoidal through groove close to the center point of the cross frame is greater than the inclined surface angle of the side wall of the trapezoidal through groove away from the center point of the cross frame; a support rod is rotatably connected to the trapezoidal through groove through a rotating shaft; elastic ropes are fixedly connected to the four corners of the cross frame; the elastic ropes sleeved and limit the support rod.

[0012] Preferably, a mounting plate is provided on the side wall of the adjusting plate; a set of threaded grooves are formed in the mounting plate; a mounting block is provided at the side end of the adjusting plate; a second sliding groove is formed at the bottom end of the mounting block; a pair of symmetrically distributed first sliding blocks are slidably connected in the second sliding groove; a clamping plate is fixedly connected to the bottom end of the first sliding block; the mounting block is mounted in the threaded groove of the mounting plate through a bolt column; the pair of first sliding blocks move towards or away from each other through a power unit; the mounting plate and the pressing plate are connected to each other through a connecting unit.

[0013] Preferably, the power unit includes a lead screw; the lead screw is rotatably connected in the second groove; a second servo motor is mounted on the side wall of the mounting block; the second servo motor and the lead screw are connected to each other; the first sliding block is connected to the lead screw through a lead screw nut pair.

[0014] Preferably, the connecting unit includes a fourth groove; a pair of symmetrically distributed fourth grooves are formed on the side wall of the adjusting plate; the top view cross-section of the fourth groove is T-shaped; a T-shaped block is slidably connected up and down in the fourth groove, and the bottom end of the T-shaped block is fixedly connected to the bottom end of the fourth groove through a spring; the mounting plate is fixedly connected to the pair of T-shaped blocks, and the mounting plate is slidably connected to the side wall of the adjusting plate; a transverse through groove is formed in the adjusting plate, and the pair of fourth grooves communicate with each other through the transverse through groove; a vertical through groove is formed on the side wall of the transverse through groove, and the vertical through groove communicates with the concave cavity; a transverse plate is slidably connected in the transverse through groove, and both ends of the transverse plate are fixedly connected to the T-shaped block; a connecting plate is fixedly connected to the transverse plate, and the connecting plate extends into the concave cavity through the vertical through groove and is fixedly connected to the side wall of the pressing plate.

[0015] An operation method of an intelligent leveling device for a crane sling, which is applicable to the above-mentioned intelligent leveling device for a crane sling, is as follows: S1: When lifting an item tied by ropes, let the ropes at both ends be hung on the hooks at both ends, and then lift the hanging plate and the cross frame through the lifting ropes. S2: After the item leaves the ground, at this time, drive a pair of first servo motors to work through the horizontal adjuster. The work of the first servo motor will drive the first gear to rotate. Then, through the meshing of the first gear and the rack plate, the rotation of the first gear drives the overall movement of the adjusting plate, so that the torques on both sides of the hanging plate are equal, and then the item is lifted as a whole in balance.

[0016] The beneficial effects of the present invention are as follows: 1. An intelligent leveling device for a crane sling and its operation method according to the present invention. The hanging plate can be regarded as the invariant center point of the lever. The distances between the end hooks of the adjusting plates on both sides and the hanging plate can be regarded as the lengths of the force arms. The product of the gravity of the object on the hook and the length of the force arm is regarded as the torque. By making the torques on both sides of the hanging plate equal, the horizontal state of the cross frame can be effectively maintained. At the same time, it can ensure that the entire lifting device will not slide in the air and can also prevent the sliding of impurities inside the object, thereby ensuring the overall stable state.

[0017] 2. An intelligent leveling device for a crane sling and its operation method according to the present invention. When the hook does not hook the object or the hook does not lift the object, at this time, a pair of U-shaped plates will clamp the rolling ball through the second through groove under the action of the spring force, so that the rolling ball will not roll, which is convenient for manual control of the first servo motor for adjustment. When the hook lifts the object and the object is away from the ground, at this time, the hook is stressed and moves downward, driving the pressing plate to move downward through the pressing block. The downward movement of the pressing plate will drive the pushing plate to move downward. The pushing plate will pass through the inclined surface of the inverted right trapezoidal groove, and then make a pair of U-shaped plates move away from each other, no longer clamping and limiting the rolling ball. Through the cooperation of the rolling ball and the pressure sensor, leveling processing is carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 is a three-dimensional view of the present invention; Figure 2 is a partial cross-sectional view of the cross frame Figure 1 ; Figure 3 is Figure 2 a partial enlarged view of part A in Figure 4 is a side cross-sectional view of the cross frame; Figure 5 is a partial cross-sectional view of the cross frame Figure 2 ; Figure 6 is a partial cross-sectional view of the cross frame Figure 3 ; Figure 7 is Figure 6 a partial enlarged view of part B in Figure 8 is a three-dimensional view of the hanging plate; Figure 9 is a three-dimensional view of the mounting block; Figure 10 is an exploded view of the cross frame; Figure 11 is a three-dimensional view of the first gear; Figure 12 is a partial exploded view of the adjusting plate.

[0020] ]In the figure: 1. Horizontal frame; 11. First groove; 12. Adjusting plate; 13. Hanging plate; 14. Suspension rope; 15. First through groove; 16. First servo motor; 17. First gear; 18. First sliding groove; 19. Rack plate; 2. Hook; 21. Sliding through groove; 22. Second groove; 23. Ball; 24. Glass plate; 25. Pressure sensor; 26. Distance sensor; 27. Roller; 3. Concave cavity; 31. U-shaped plate; 32. Second through groove; 33. Pressing plate; 34. Pressing block; 35. Inverted right trapezoidal groove; 36. Pushing plate; 42. Inverted T-shaped sliding groove; 43. Positioning groove; 44. Inverted U-shaped column; 45. Threaded column; 46. Trapezoidal through groove; 47. Support rod; 48. Elastic rope; 5. Mounting plate; 51. Threaded groove; 52. Bolt column; 53. Mounting block; 54. Second servo motor; 55. Lead screw; 56. Second sliding groove; 57. First slider; 58. Clamping plate; 6. Fourth groove; 61. Horizontal through groove; 62. Vertical through groove; 63. Connecting plate; 64. T-shaped block; 65. Horizontal plate. Detailed implementation manner

[0021] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with the specific implementation manners.

[0022] Such as Figures 1 to 12As shown in the figure, an intelligent leveling device for a crane spreader according to an embodiment of the present invention includes a cross frame 1; first grooves 11 are formed on both sides of the cross frame 1; a regulating plate 12 is slidably connected in the first grooves 11; a hook 2 is provided at the bottom end of the end of the regulating plate 12; first sliding grooves 18 are formed on the side walls of both sides of the first groove 11; a rack plate 19 is fixedly connected in each of the first sliding grooves 18; a first through groove 15 is formed in the plate of the regulating plate 12 close to the bottom of the first groove 11; a pair of symmetrically distributed first gears 17 are rotatably connected in the first through groove 15, and the pair of first gears 17 are meshed with each other; the pair of first gears 17 are respectively meshed with the rack plates 19 in the first sliding grooves 18 on both sides; a pair of sliding through grooves 21 symmetrically distributed about the center point of the cross frame 1 are formed at the top end of the cross frame 1, and the sliding through grooves 21 communicate with the first grooves 11; a pair of first servo motors 16 symmetrically distributed about the center point of the cross frame 1 are provided on the cross frame 1, the first servo motors 16 are fixedly connected to the regulating plate 12 through connecting columns, the output of the first servo motors 16 is provided with a first rotating shaft, and the first rotating shaft is rotatably connected to the regulating plate 12 through the sliding through grooves 21, and the bottom end of the first rotating shaft is connected to the first gear 17; a horizontal adjuster is provided on the regulating plate 12; a hanging plate 13 is provided at the top end of the cross frame 1, and a set of lifting ropes 14 are formed on the hanging plate 13, and the positions of the set of lifting ropes 14 are arranged in a square shape; in the prior art, when an item is generally lifted by a spreader, since the weights of the two ends of the item are not balanced after being tied by ropes, the item will be in an unbalanced state, and some sundries that are not in a fixed state inside the item will also slide. If the sundries are fragile items, they will be broken. At the same time, the sliding of the sundries will also cause the spreader to shake after being lifted, affecting the overall lifting balance; for this reason, when the present invention works, when lifting an item tied by ropes, the tying ropes at both ends are hung on the hooks 2 at both ends, and then the hanging plate 13 and the cross frame 1 are lifted by the lifting ropes 14. After the item leaves the ground, at this time, the horizontal adjuster drives the pair of first servo motors 16 to work. The work of the first servo motors 16 will drive the first gears 17 to rotate. Then, through the meshing of the first gears 17 and the rack plates 19, the rotation of the first gears 17 drives the overall movement of the regulating plate 12. Since the hanging plate 13 is in a state of being pulled by the lifting ropes 14, the hanging plate 13 can be regarded as a constant lever center point, and the distances between the hooks 2 at the ends of the regulating plates 12 on both sides and the hanging plate 13 can be regarded as the lengths of the force arms. The product of the gravity of the item on the hook 2 and the length of the force arm is regarded as the moment, so that the moments on both sides of the hanging plate 13 are equal, that is, the horizontal state of the cross frame 1 is effectively maintained, and at the same time, it is ensured that the entire lifting device will not slide in the air, and the sliding of the sundries inside the item can also be avoided, thereby ensuring the overall stable state.

[0023] The horizontal adjuster includes a second groove 22; a second groove 22 is formed at the top end of the adjusting plate 12; a glass plate 24 is fixedly connected to the opening of the second groove 22; the cross-section between the glass plate 24 and the second groove 22 is circular; a rolling ball 23 slides between the glass plate 24 and the second groove 22; pressure sensors 25 are fixedly connected to the side walls on both sides of the second groove 22; a distance sensor 26 is fixedly connected to the bottom of the first groove 11; the top view cross-section and the front view cross-section of the first groove 11 are both convex; a set of rollers 27 are formed on the side walls of the adjusting plate 12 near the bottom of the first groove 11, and the rollers 27 are in contact with the side walls of the first groove 11; during operation, after the binding ropes are hung on the two hooks 2 on both sides, at this time, the two first servo motors 16 are manually controlled first, and then the distance between the hook 2 on the adjusting plate 12 on both sides and the hanging plate 13 is adjusted. Since the distance is adjusted manually through subjective factors at this time, the accuracy cannot be guaranteed. After the manual adjustment, at this time, the hook 2 and the cross frame 1 move upward as a whole, and after the article is initially lifted off the ground, since the torques between the two hooks 2 on both sides are not exactly equal, the cross frame 1 will shift, which will cause the rolling ball 23 in the second groove 22 to roll. The rolling ball 23 will come into contact with the pressure sensor 25 on the side wall of the second groove 22. In which direction the rolling ball 23 fits with the pressure sensor 25, the first servo motor 16 on the adjusting plate 12 will drive the adjusting plate 12 to move in the opposite direction, so that the force arm is increased or shortened, thereby making the torques between the two hooks 2 equal, and then completing the overall balance of the cross frame 1 and completing the leveling process. At the same time, the distance sensor 26 can measure the distance between the adjusting plate 12 and the bottom of the first groove 11. There is a minimum and a maximum distance. After the distance sensor 26 measures, the first servo motor 16 of the adjusting plate 12 will no longer move. At the same time, there is a self-locking mechanism (prior art) in the first servo motor 16, and the adjusting plate 12 can effectively ensure stability. At the same time, the square setting of a set of suspension ropes 14 can ensure the balance of the cross frame 1 in the initial state. When the forces on the two adjusting plates 12 on both sides do not differ greatly, the setting of the suspension ropes 14 can ensure the balance of the cross frame 1. Only when there is a large difference in the forces on both sides of the adjusting plate 12, the cross frame 1 will shift and the horizontal adjuster needs to be adjusted. At the same time, the position of the second groove 22 inside the end of the adjusting plate 12 is such that when the angle deviates, the farther it is from the hanging plate 13, the greater the height difference between the rolling ball 23 and the horizontal plane, and the more sensitive the rolling ball 23 is.

[0024] The adjusting plate 12 is provided with a concave cavity 3 in the end portion away from the bottom of the first groove 11; a second through groove 32 is provided on both side walls of the second groove 22; the second through groove 32 and the concave cavity 3 are connected to each other; a U-shaped plate 31 is fixedly connected to the side walls of the concave cavity 3 on both sides by a spring, and the openings of a pair of U-shaped plates 31 are arranged opposite to each other; the upper horizontal plate position of the U-shaped plate 31 corresponds to the position of the second through groove 32; a pressure plate 33 is slidably connected to the side walls of the concave cavity 3 on both sides, and the pressure plate 33 is located between the pair of U-shaped plates 31; the bottom end of the pressure plate 33 is fixedly connected to the bottom end of the concave cavity 3 by a spring; the bottom end of the pressure plate 33 is fixedly connected to a pressure block 34; the top end of the hook 2 extends into the concave cavity 3 and is mounted on the pressure block 34; the pressure plate 33 pushes the U-shaped plate 31 to move by the pushing unit; The pushing unit includes a pushing plate 36; an inverted right-angled trapezoidal groove 35 is formed on the top of the lower horizontal plate of the U-shaped plate 31; a pair of pushing plates 36 are fixed to the pressing plate 33 and are symmetrically distributed about the pressing block 34; the bottom ends of the pushing plates 36 are arc-shaped, and the bottom ends of the pushing plates 36 are located in the inverted right-angled trapezoidal groove 35 and contact the inclined surfaces of the inverted right-angled trapezoidal groove 35; During operation, when the hook 2 does not hook the object or the hook 2 does not lift the object, the pair of U-shaped plates 31 will clamp the ball 23 through the second through slot 32 under the action of the spring force, so that the ball 23 will not roll, which can facilitate manual control of the first servo motor 16 for adjustment. After the hook 2 lifts the object and the object is away from the ground, the hook 2 is forced to move downward, and the pressure plate 33 is driven downward by the pressure block 34. The downward movement of the pressure plate 33 will drive the push plate 36 to move downward, and the push plate 36 will pass through the inclined surface of the inverted right-angled trapezoidal groove 35, thereby allowing the pair of U-shaped plates 31 to move away from each other, and no longer clamp the ball 23 to limit the position. Leveling is performed through the cooperation of the ball 23 and the pressure sensor 25.

[0025] The top of the cross frame 1 is provided with a pair of symmetrically distributed inverted T-shaped slide grooves 42; the hanging plate 13 is inverted U-shaped; the bottom ends on both sides of the hanging plate 13 slide in the corresponding inverted T-shaped slide grooves 42, and the bottom end of the hanging plate 13 is inverted T-shaped when viewed from above; a group of positioning grooves 43 are provided on the top of the cross frame 1; the top of the hanging plate 13 is provided with an inverted U-shaped column 44, and the inverted U-shaped column 44 passes through the hanging plate 13; the middle part of the hanging plate 13 is rotatably connected with a threaded column 45, and the threaded column 45 is threadedly connected to the middle part of the inverted U-shaped column 44; during work, because the moving distance of the adjustment plate 12 is limited, in extreme cases, the inverted U-shaped column 44 can be disengaged from the positioning groove 43 by rotating the threaded column 45, and then the hanging plate 13 or the cross frame 1 is moved, thereby adjusting the position of the hanging plate 13, that is, the center point of the lever, thereby increasing the scope of application of this device.

[0026] Trapezoidal through grooves 46 are formed at the four corners of the cross frame 1, and the inclined surface angle of the side wall of the trapezoidal through groove 46 close to the center point of the cross frame 1 is greater than the inclined surface angle of the side wall of the trapezoidal through groove 46 far from the center point of the cross frame 1; a support rod 47 is rotatably connected in the trapezoidal through groove 46 through a rotating shaft; elastic ropes 48 are fixedly connected at the four corners of the cross frame 1; the elastic ropes 48 perform slip limiting on the support rod 47; during operation, when the position of the hanging plate 13 needs to be adjusted, at this time, the elastic ropes 48 can be disengaged from the limit on the support rod 47, so that the support plate fits on the inclined surface of the trapezoidal through groove 46 close to the end of the adjusting plate 12, and then the whole cross frame 1 is moved downward to support the cross frame 1, which is convenient for moving the hanging plate 13. At the same time, the support rod 47 supports outward, which can effectively ensure the support performance and will not cause instability.

[0027] An installation plate 5 is provided on the side wall of the adjusting plate 12; a group of threaded grooves 51 are formed in the installation plate 5; an installation block 53 is provided at the side end of the adjusting plate 12; a second chute 56 is formed at the bottom end of the installation block 53; a pair of symmetrically distributed first sliders 57 are slidably connected in the second chute 56; a clamping plate 58 is fixedly connected to the bottom end of the first slider 57; the installation block 53 is installed in the threaded groove 51 of the installation plate 5 through a bolt column 52; the pair of first sliders 57 move towards or away from each other through a power unit; the installation plate 5 is connected to the pressing plate 33 through a connecting unit; The power unit includes a lead screw 55; the lead screw 55 is rotatably connected in the second groove 22; a second servo motor 54 is installed on the side wall of the installation block 53; the second servo motor 54 is connected to the lead screw 55; the first slider 57 is connected to the lead screw 55 through a lead screw 55 nut pair; During operation, when lifting an item, generally the hook 2 cannot be applied to items in the full range. Therefore, the installation plate 5 is provided. The installation block 53 can be installed on the installation plate 5 through the bolt column 52 and the threaded groove 51 to install other lifting tools. For example, the lifting tool with the clamping plate 58 installed in the present invention (other lifting tools can also be installed). The second servo motor 54 drives the lead screw 55 to rotate, and then drives the pair of clamping plates 58 to move to lift the item suitable for this lifting tool.

[0028] The connecting unit includes a fourth groove 6; a pair of symmetrically distributed fourth grooves 6 are formed in the side walls of the adjusting plate 12; the top view cross-section of the fourth groove 6 is T-shaped; a T-shaped block 64 is slidably connected up and down in the fourth groove 6, and the bottom end of the T-shaped block 64 is fixedly connected to the bottom end of the fourth groove 6 through a spring; the mounting plate 5 is fixedly connected to a pair of T-shaped blocks 64, and the mounting plate 5 is slidably connected to the side wall of the adjusting plate 12; a horizontal through groove 61 is formed in the adjusting plate 12, and a pair of fourth grooves 6 communicate with each other through the horizontal through groove 61; a vertical through groove 62 is formed in the side wall of the horizontal through groove 61, and the vertical through groove 62 communicates with the concave cavity 3; a horizontal plate 65 is slidably connected to the horizontal through groove 61, and both ends of the horizontal plate 65 are fixedly connected to the T-shaped block 64; a connecting plate 63 is fixedly connected to the horizontal plate 65, and the connecting plate 63 extends into the concave cavity 3 through the vertical through groove 62 and is fixedly connected to the side wall of the pressing plate 33; during operation, after installing other types of lifting tools, in order to ensure the application of the horizontal adjuster, the T-shaped block 64 and the connecting plate 63 are provided. When operating the lifting tool through the clamping plate 58, only when the clamping plate 58 lifts the item off the ground, the lifting tool of the clamping plate 58 will drive the entire mounting plate 5 to move downward. The downward movement of the mounting plate 5 will drive the T-shaped block 64 and the horizontal plate 65 to move downward, causing the connecting plate 63 to drive the pressing plate 33 to move downward, thereby completing the release of the limit of the rolling ball 23, ensuring the operation of the horizontal adjuster and the application of other lifting tools.

[0029] An operation method of an intelligent lifting tool leveling device for a crane, which is applicable to the above-mentioned intelligent lifting tool leveling device for a crane. The method is as follows: S1: When lifting an item tied with ropes, hang the ropes at both ends on the hooks 2 at both ends, and then lift the hanging plate 13 and the cross frame 1 through the lifting ropes 14. S2: After the item is lifted off the ground, at this time, the horizontal adjuster drives a pair of first servo motors 16 to work. The first servo motor 16 drives the first gear 17 to rotate. Then, through the meshing of the first gear 17 and the rack plate 19, the rotation of the first gear 17 drives the entire adjusting plate 12 to move, so that the torques on both sides of the hanging plate 13 are equal, and then the item is lifted as a whole in balance.

[0030] Working principle: When lifting items tied with ropes, let the binding ropes at both ends hang on the hooks 2 at both ends, and then lift the hanging plate 13 and the cross frame 1 through the ropes 14. After the items are off the ground, the horizontal adjuster drives a pair of first servo motors 16 to work. The operation of the first servo motor 16 will drive the first gear 17 to rotate, and then through the engagement of the first gear 17 and the rack plate 19, the rotation of the first gear 17 drives the adjustment plate 12 to move as a whole. Because the hanging plate 13 is in a state of being pulled by the ropes 14, the hanging plate 13 can be regarded as an unchanging lever center point. The distance between the hooks 2 and the hanging plate 13 at the ends of the adjustment plates 12 on both sides can be regarded as the length of the lever arm. The gravity of the items on the hook 2 The product of the length of the lever arm is regarded as a torque, and the torque on both sides of the hanging plate 13 is made equal, that is, the horizontal state of the cross frame 1 is effectively maintained, and at the same time, it is ensured that the entire lifting device will not slide in the air, and the sliding of impurities inside the items can be avoided, thereby ensuring the overall stability; after the binding ropes are hung on the hooks 2 on both sides, the two first servo motors 16 are manually controlled at this time to adjust the distance between the adjustment plates 12 12 and the hanging plates 13 on both sides. At this time, the distance is adjusted manually through subjective factors, and the accuracy cannot be guaranteed. After the manual adjustment, the hooks 2 and the cross frame 1 move up as a whole, and after the items are initially lifted off the ground, the torque between the hooks 2 on both sides is not completely equal. When the cross frame 1 is offset, the ball 23 in the second groove 22 will roll, and the ball 23 will contact the pressure sensor 25 on the side wall of the second groove 22. The first servo motor 16 on the adjustment plate 12 will drive the adjustment plate 12 to move in the opposite direction when the ball 23 touches the pressure sensor 25, so that the force arm increases or decreases, thereby completing the equalization of the torque between the two hooks 2, and completing the overall balance of the cross frame 1 and the leveling process. At the same time, the distance sensor 26 can measure the distance between the adjustment plate 12 and the bottom of the first groove 11, of which there is a minimum and maximum distance. After the distance sensor 26 measures, the first servo motor 16 of the adjustment plate 12 is It will not move anymore. At the same time, there is a self-locking mechanism in the first servo motor 16 (existing technology). The adjustment plate 12 can effectively ensure stability. At the same time, the square setting of a group of hanging ropes 14 can ensure the balance of the horizontal frame 1 in the initial state. When the forces on the adjustment plates 12 on both sides are not significantly different, the setting of the hanging ropes 14 can ensure the balance of the horizontal frame 1. Only when there is a large difference in the forces on both sides of the adjustment plate 12, the horizontal frame 1 will deviate and the horizontal adjuster will need to be adjusted. At the same time, the second groove 22 is located in the end of the adjustment plate 12. When the angle deviates, the farther it is from the hanging plate 13, the greater the height difference between the ball 23 and the horizontal plane, and the more sensitive the ball 23 is.When the lifting hook 2 does not hook an object or does not lift an object, at this time, a pair of U-shaped plates 31 will clamp the rolling ball 23 through the second through groove 32 under the action of spring force, so that the rolling ball 23 will not roll, which is convenient for manual control of the first servo motor 16 for adjustment. When the lifting hook 2 lifts the object and the object is far from the ground, at this time, the lifting hook 2 is stressed and moves downward, drives the pressing plate 33 to move downward through the pressing block 34, and the downward movement of the pressing plate 33 will drive the pushing plate 36 to move downward. The pushing plate 36 will pass through the inclined surface of the inverted right trapezoidal groove 35, so that a pair of U-shaped plates 31 move away from each other, and no longer clamp and limit the rolling ball 23. Through the cooperation of the rolling ball 23 and the pressure sensor 25, leveling processing is carried out.

[0031] The above front, back, left, right, up, and down are all based on the Figure 1 description in the accompanying drawings of the specification. Taking the perspective of the person observing as the standard, the side of the device facing the observer is defined as the front, and the left side of the observer is defined as the left, and so on.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent leveling device for a crane spreader, characterized in that: It includes a cross frame (1); on both sides of the cross frame (1), first grooves (11) are provided; a regulating plate (12) is slidably connected in the first grooves (11); a hook (2) is provided at the bottom end of the end of the regulating plate (12); on both side walls of the first grooves (11), first chutes (18) are provided; rack plates (19) are fixedly connected in the first chutes (18); a first through groove (15) is provided in the plate of the regulating plate (12) close to the bottom of the first groove (11); a pair of symmetrically distributed first gears (17) are rotatably connected in the first through groove (15), and the pair of first gears (17) are meshed with each other; the pair of first gears (17) are respectively meshed with the rack plates (19) in the first chutes (18) on both sides; at the top of the cross frame (1), a pair of sliding through grooves (21) symmetrically distributed about the center point of the cross frame (1) are provided, and the sliding through grooves (21) are communicated with the first grooves (11); on the cross frame (1), a pair of first servo motors (16) symmetrically distributed about the center point of the cross frame (1) are provided. The first servo motors (16) are fixedly connected to the regulating plate (12) through connecting columns, and the output of the first servo motors (16) is provided with a first rotating shaft. The first rotating shaft is rotatably connected to the regulating plate (12) through the sliding through grooves (21), and the bottom end of the first rotating shaft is connected to the first gear (17); a horizontal regulator is provided on the regulating plate (12); a hanging plate (13) is provided at the top of the cross frame (1), and a group of suspension ropes (14) are provided on the hanging plate (13), and the positions of the group of suspension ropes (14) are arranged in a square shape.

2. The intelligent leveling device for the crane spreader according to claim 1, wherein: The horizontal regulator includes a second groove (22); a second groove (22) is provided at the top of the regulating plate (12); a glass plate (24) is fixedly connected at the opening of the second groove (22); the cross section between the glass plate (24) and the second groove (22) is circular; a rolling ball (23) slides between the glass plate (24) and the second groove (22); pressure sensors (25) are fixedly connected to both side walls of the second groove (22); a distance sensor (26) is fixedly connected to the bottom of the first groove (11); the top view cross section and the front view cross section of the first groove (11) are both convex; a group of rollers (27) are provided on both side walls of the regulating plate (12) close to the bottom of the first groove (11), and the rollers (27) are in contact with the side wall of the first groove (11).

3. The intelligent leveling device for the crane spreader according to claim 2, characterized in that: A concave cavity (3) is formed in the end of the adjusting plate (12) away from the bottom of the first groove (11); second through grooves (32) are formed in the side walls on both sides of the second groove (22); the second through grooves (32) communicate with the concave cavity (3); U-shaped plates (31) are fixedly connected to the side walls on both sides of the concave cavity (3) through springs, and the openings of a pair of U-shaped plates (31) are arranged oppositely; the upper horizontal plate position of the U-shaped plate (31) corresponds to the position of the second through groove (32); a pressing plate (33) is slidably connected to the side walls on both sides of the concave cavity (3), and the pressing plate (33) is located between a pair of U-shaped plates (31); the bottom end of the pressing plate (33) is fixedly connected to the bottom end of the concave cavity (3) through a spring; a pressing block (34) is fixedly connected to the bottom end of the pressing plate (33); the top end of the hook (2) extends into the concave cavity (3) and is installed on the pressing block (34); the pressing plate (33) pushes the U-shaped plate (31) to move through a pushing unit.

4. The intelligent leveling device for the crane spreader according to claim 3, characterized in that: The pushing unit includes a pushing plate (36); an inverted right trapezoidal groove (35) is formed in the top end of the lower horizontal plate of the U-shaped plate (31); a pair of pushing plates (36) symmetrically distributed about the pressing block (34) are fixedly connected to the pressing plate (33); the bottom end of the pushing plate (36) is arc-shaped, and the bottom end of the pushing plate (36) is located in the inverted right trapezoidal groove (35) and is in contact with the inclined surface of the inverted right trapezoidal groove (35).

5. The intelligent leveling device for a crane spreader according to claim 4, characterized in that: A pair of symmetrically distributed inverted T-shaped sliding grooves (42) are formed in the top end of the cross frame (1); the hanging plate (13) is inverted U-shaped; the bottom ends on both sides of the hanging plate (13) slide in the corresponding inverted T-shaped sliding grooves (42), and the bottom end top view of the hanging plate (13) is inverted T-shaped; a group of positioning grooves (43) are formed in the top end of the cross frame (1); an inverted U-shaped column (44) is arranged at the top end of the hanging plate (13), and the inverted U-shaped column (44) penetrates through the hanging plate (13); a threaded column (45) is rotatably connected to the middle of the hanging plate (13), and the threaded column (45) is threadedly connected to the middle of the inverted U-shaped column (44).

6. The intelligent leveling device for the crane spreader according to claim 5, wherein: Trapezoidal through grooves (46) are formed at the four corners of the cross frame (1), and the inclined surface angle of the side wall of the trapezoidal through groove (46) close to the center point of the cross frame (1) is greater than the inclined surface angle of the side wall of the trapezoidal through groove (46) away from the center point of the cross frame (1); a support rod (47) is rotatably connected to the trapezoidal through groove (46) through a rotating shaft; elastic ropes (48) are fixedly connected to the four corners of the cross frame (1); the elastic ropes (48) perform sleeve sliding limit on the support rod (47).

7. The intelligent leveling device for the crane spreader according to claim 6, characterized in that: A mounting plate (5) is provided on the side wall of the adjusting plate (12); a set of threaded grooves (51) are formed in the mounting plate (5); a mounting block (53) is provided at the side end of the adjusting plate (12); a second sliding groove (56) is formed at the bottom end of the mounting block (53); a pair of symmetrically distributed first sliding blocks (57) are slidably connected in the second sliding groove (56); a clamping plate (58) is fixedly connected to the bottom end of the first sliding block (57); the mounting block (53) is installed in the threaded groove (51) of the mounting plate (5) through a bolt column (52); the pair of first sliding blocks (57) move towards or away from each other through a power unit; the mounting plate (5) and the pressing plate (33) are connected to each other through a connecting unit.

8. An intelligent leveling device for a crane spreader according to claim 7, characterized in that: The power unit includes a lead screw (55); the lead screw (55) is rotatably connected in the second groove (22); a second servo motor (54) is installed on the side wall of the mounting block (53); the second servo motor (54) and the lead screw (55) are connected to each other; the first sliding block (57) is connected to the lead screw (55) through a lead screw nut pair.

9. The intelligent leveling device for the crane spreader according to claim 8, characterized in that: The connecting unit includes a fourth groove (6); a pair of symmetrically distributed fourth grooves (6) are formed on the side wall of the adjusting plate (12); the top view section of the fourth groove (6) is T-shaped; a T-shaped block (64) is slidably connected up and down in the fourth groove (6), and the bottom end of the T-shaped block (64) is fixedly connected to the bottom end of the fourth groove (6) through a spring; the mounting plate (5) is fixedly connected to the pair of T-shaped blocks (64), and the mounting plate (5) is slidably connected to the side wall of the adjusting plate (12); a transverse through groove (61) is formed in the adjusting plate (12), and the pair of fourth grooves (6) are communicated with each other through the transverse through groove (61); a vertical through groove (62) is formed on the side wall of the transverse through groove (61), and the vertical through groove (62) is communicated with the concave cavity (3); a transverse plate (65) is slidably connected in the transverse through groove (61), and both ends of the transverse plate (65) are fixedly connected to the T-shaped block (64); a connecting plate (63) is fixedly connected to the transverse plate (65), and the connecting plate (63) extends into the concave cavity (3) through the vertical through groove (62) and is fixedly connected to the side wall of the pressing plate (33).

10. An operating method for a leveling device of an intelligent spreader of a crane, which is applicable to the leveling device of the intelligent spreader of the crane described in claim 9 above, characterized in that: The method is as follows: S1: When lifting an item tied with a rope, hang the tying ropes at both ends on the hooks (2) at both ends, and then lift the hanging plate (13) and the cross frame (1) through the lifting rope (14). S2: After the item leaves the ground, at this time, drive a pair of first servo motors (16) to work through the horizontal adjuster. The work of the first servo motor (16) will drive the first gear (17) to rotate. Then, through the meshing of the first gear (17) and the rack plate (19), the rotation of the first gear (17) drives the overall movement of the adjusting plate (12), so that the torques on both sides of the hanging plate (13) are equal, and then the item is lifted as a whole in balance.

Images