An anti-sway control device for crane spreaders used in hydropower stations and ports

Abstract

The present invention discloses an anti-sway control device for crane hoists used in hydropower stations and ports. The device comprises a tray, wherein a first piston cylinder is movably provided with an extrusion column. When a heavy object to be lifted is placed on the tray, the center of gravity of the tray is shifted and tilted. The tray tilts and squeezes the extrusion column. The first and second piston cylinders drive the drive column and the support column to move, thereby changing the center of gravity of the tray on which the heavy object is placed. The tray is horizontal when being lifted, and the drive column can be locked when the tray moves upward. The present invention is suitable for lifting heavy objects of different weights and shapes. When a heavy object is placed on the tray, the tray is automatically adjusted by utilizing the unbalanced weight distribution of the heavy object, effectively solving the problem of swaying of the load caused by the unbalanced weight of the load and improving the stability and safety of the lifting.

Description

Technical Field

[0001] The present invention relates to the technical field of dental comprehensive treatment machines, in particular to an anti-sway control device for crane hoists used in hydropower stations and ports. Background Art

[0002] Crane spreader swaying during operation can be caused by a variety of factors. These include improper operation, starting or braking too quickly or too harshly. When the crane's trolley or carriage starts or brakes, if the speed changes too quickly, the load will maintain its original motion due to inertia, causing sway. Inexperienced operators can also cause the load to sway significantly during starting or braking. However, these factors can be resolved through repeated practice and careful operator attention.

[0003] However, if it is placed improperly: if the weight is placed on one side of the pallet, the load will swing during the lifting process, and even skilled operators cannot effectively solve this problem. For example, the Chinese patent application with the prior art publication number CN218708568U discloses a precise anti-sway structure for a crane sling, which includes a trolley frame, a sling frame, four lifting pulleys and four anti-sway pulleys. Two main drums are provided at both ends of the trolley frame, and two lifting ropes are wound around the main drums. Four anti-sway drums are provided in the middle of the trolley frame.

[0004] The above-mentioned prior art cannot help balance the sling loaded with cargo before lifting. Although the anti-sway pulley and drum are used to suppress the swing, the problem of overload leveling before lifting is not solved. It belongs to "correction after the fact" rather than "prevention before the fact", which can easily cause the sling to be in a tilted state when lifting, thereby causing swinging and cargo sliding.

[0005] To this end, the present application proposes an anti-sway control device for crane spreaders used in hydropower stations and ports. Summary of the Invention

[0006] The purpose of the present invention is to solve the above technical problems and to propose an anti-sway control device for crane spreaders used in hydropower stations and ports.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A sway control device for crane hoists used in hydropower stations and ports includes a tray, an adjustment slot provided at an upper end of the tray, a support column movably connected within the adjustment slot, a universal shaft mounted on the upper end of the support column, a placement plate located in the adjustment slot and movable within the adjustment slot fixed to the upper end of the universal shaft, and four adjustment mechanisms mounted in the adjustment slot for adjusting the positions of the support column and the placement plate. The adjustment mechanism includes a first piston cylinder and a second piston cylinder mounted in the adjustment slot, a squeeze column movably disposed within the first piston cylinder, the squeeze column initially abutting against the bottom of the placement plate, and an upper end of the squeeze column being arranged in an arc shape, a drive column movably connected within the second piston cylinder for driving the support column to move, and when a heavy object to be lifted is placed on the placement plate, the placement plate's center of gravity shifts and tilts. The placement plate tilts and squeezes the squeeze column, and the first and second piston cylinders drive the drive column and the support column to move, thereby changing the center of gravity of the placement plate with the heavy object placed thereon, so that the tray is horizontal when lifted, and locking the drive column when the tray moves upward.

[0009] Preferably, a protective fence is installed on the upper end of the pallet, a switch door that can be opened is provided on the protective fence, and a lifting buckle connected to a crane is installed on the protective fence.

[0010] Preferably, a mounting block is fixedly connected to the bottom of the support column, and a plurality of balls are installed on the bottom of the mounting block.

[0011] Preferably, the inner bottom of the adjusting groove is rotatably connected to a short rod, the first piston cylinder is fixed on the short rod, the first movable piston is slidably connected in the first piston cylinder, the bottom of the first movable piston is fixed with a return spring, the lower end of the return spring is fixedly connected to the inner bottom of the first piston cylinder, and the first piston cylinder is connected to the second piston cylinder through a delivery pipe.

[0012] Preferably, a second movable piston is slidably connected in the second piston cylinder, the driving column is fixed on the second movable piston, the end of the driving column is rotatably connected to a connecting shaft, and the connecting shaft is fixed on the mounting block.

[0013] Preferably, a valve is installed on the delivery pipe, and a gear is installed on the valve. The rotation of the gear can control the opening and closing of the valve. A rack plate is meshed on the gear, and a connecting rod is fixedly connected to the bottom of the rack plate. An inner cavity is provided on the tray, and a movable plate that can be reset is slidably connected in the inner cavity. Four T-shaped arc grooves are provided on the upper end of the movable plate, and a T-block is slidably connected in the arc groove. The connecting rod is rotatably installed on the T-block.

[0014] Preferably, a fixing block is installed on the second piston cylinder, and a limiting wheel is rotatably connected to the fixing block, and the limiting wheel is against the rack plate.

[0015] Preferably, four return springs are fixed to the upper end of the movable plate, the return springs are fixed to the inner top of the inner cavity, the bottom of the movable plate is fixedly connected to an extrusion plate, the bottom of the tray is penetrated by a through slot connected to the inner cavity, and the extrusion plate penetrates the through slot and is slidably arranged.

[0016] Preferably, the center of the arc-shaped groove coincides with the axis of the short rod.

[0017] Preferably, the adjustment groove is connected to the inner cavity through a strip groove, the connecting rod is arranged to pass through the strip groove, and the connecting rod can move forward, backward, left, right, and up and down in the strip groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. When a heavy object is placed on the pallet, its center of gravity is automatically detected and adjusted. The squeeze column, first and second piston cylinders, and drive column work together to dynamically adjust the pallet within the adjustment slot, ensuring the pallet remains level when lifted. This function effectively eliminates the problem of swaying objects caused by heavy loads and improves the stability and safety of lifting operations.

[0020] 2. When the pallet is ready to be lifted, the movable plate and squeeze plate return to their original position due to the return spring, driving the linkage rod and rack plate downward, which in turn closes the valve and locks the hydraulic oil in the first and second piston cylinders. This locking mechanism ensures the stable position of the tray and pallet during lifting, preventing swaying caused by the movement of hydraulic oil.

[0021] 3. The present invention is suitable for lifting heavy objects of different weights and shapes. By dynamically adjusting the positions of the support columns and the placement plates, it can adapt to various weight imbalances and ensure stability during the lifting process.

[0022] 4. Compared with the traditional method that requires the operator to manually adjust the balance of the spreader, the present invention realizes automatic adjustment, greatly simplifies the operation process, and reduces the requirements on the operator's skill level.

[0023] In summary, the present invention is suitable for lifting heavy objects of different weights and shapes. When the heavy objects are placed on the placement plate, the placement plate is automatically adjusted due to the unbalanced weight distribution of the heavy objects, which effectively solves the problem of swaying of the objects caused by the unbalanced weight of the goods and improves the stability and safety of the lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of an anti-sway control device for crane spreaders used in hydropower stations and ports proposed by the present invention;

[0025] Figure 2 This is a bottom view of an anti-sway control device for crane spreaders used in hydropower stations and ports proposed by the present invention;

[0026] Figure 3 This is a cross-sectional view of an anti-sway control device for crane spreaders used in hydropower stations and ports proposed by the present invention;

[0027] Figure 4 This is a schematic diagram of the interior of an adjustment tank in an anti-sway control device for crane spreaders used in hydropower stations and ports proposed by the present invention;

[0028] Figure 5 This is a front cross-sectional view of an anti-sway control device for crane spreaders used in hydropower stations and ports proposed by the present invention;

[0029] Figure 6 This is a schematic diagram of an adjustment slot in an anti-sway control device for crane spreaders used in hydropower stations and ports proposed by the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the first piston cylinder and the second piston cylinder in the anti-sway control device for crane spreaders used in hydropower stations and ports proposed by the present invention;

[0031] Figure 8 This is a structural schematic diagram of a movable plate in an anti-sway control device for crane spreaders used in hydropower stations and ports proposed by the present invention.

[0032] In the figure: 1 tray, 2 protective fence, 3 hanging buckle, 4 adjustment groove, 5 placement plate, 6 first piston cylinder, 7 short rod, 8 support column, 9 inner cavity, 10 movable plate, 11 second piston cylinder, 12 mounting block, 13 ball, 14 driving column, 15 universal joint, 16 extrusion column, 17 strip groove, 18 connecting rod, 19 first movable piston, 20 return spring, 21 delivery pipe, 22 valve, 23 gear, 24 rack plate, 25 fixed block, 26 limiting wheel, 27 T-block, 28 second movable piston, 29 connecting shaft, 30 arc groove, 31 through groove, 32 extrusion plate, 33 return spring. DETAILED DESCRIPTION

[0033] It should be noted that the terms "first," "second," etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and that the objects distinguished by "first," "second," etc. are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Reference Figures 1-8 A device for controlling the sway of crane spreaders used in hydropower stations and ports includes a tray 1, with a protective fence 2 mounted on its upper end. The fence 2 is equipped with an openable switch door and a lifting hook 3 mounted on the fence 2 for connection to the crane. An adjustment slot 4 is provided at the upper end of the tray 1, within which a support column 8 is movably connected. A mounting block 12 is fixedly connected to the bottom of the support column 8. Multiple ball bearings 13 are mounted on the bottom of the mounting block 12. These ball bearings 13 support the mounting block 12 and facilitate its movement for subsequent adjustment.

[0036] A universal joint 15 is installed at the upper end of the support column 8, and a placement plate 5 located in the adjustment groove 4 and movable in the adjustment groove 4 is fixed to the upper end of the universal joint 15. Four adjustment mechanisms capable of adjusting the positions of the support column 8 and the placement plate 5 are installed in the adjustment groove 4. The adjustment mechanism includes a first piston cylinder 6 and a second piston cylinder 11 installed in the adjustment groove 4. An extrusion column 16 is movably provided in the first piston cylinder 6. In its initial state, the extrusion column 16 is abutted against the bottom of the placement plate 5 and the upper end of the extrusion column 16 is arranged in an arc shape. The inner bottom of the adjustment groove 4 is rotatably connected to a short rod 7, and the first piston cylinder 6 is fixed on the short rod 7. The setting of the short shaft 7 provides conditions for the subsequent rotation direction required for adjusting the position of the placement plate 5.

[0037] A first movable piston 19 is slidably connected inside the first piston cylinder 6. A return spring 20 is fixed to the bottom of the first movable piston 19. The lower end of the return spring 20 is fixedly connected to the inner bottom of the first piston cylinder 6. The first piston cylinder 6 is connected to the second piston cylinder 11 through a delivery pipe 21.

[0038] A valve 22 is installed on the delivery pipe 21, and a gear 23 is installed on the valve 22. The rotation of the gear 23 can control the opening and closing of the valve 22. A rack plate 24 is engaged with the gear 23. In order to ensure that the rack plate 24 moves up and down more stably, a fixed block 25 is installed on the second piston cylinder 11. The fixed block 25 is rotatably connected to a limiting wheel 26, and the limiting wheel 26 is against the rack plate 24.

[0039] The bottom of the rack plate 24 is fixedly connected with a connecting rod 18 . The adjustment slot 4 is connected to the inner cavity 9 through the strip slot 17 . The connecting rod 18 passes through the strip slot 17 and can move forward, backward, left, right, and up and down in the strip slot 17 .

[0040] An inner cavity 9 is provided on the tray 1, and a movable plate 10 that can be reset is slidably connected in the inner cavity 9. Four return springs 33 are fixed to the upper end of the movable plate 10, and the return springs 33 are fixed to the inner top of the inner cavity 9. An extrusion plate 32 is fixedly connected to the bottom of the movable plate 10. A through groove 31 communicating with the inner cavity 9 is provided through the bottom of the tray 1, and the extrusion plate 32 passes through the through groove 31 and is slidably arranged.

[0041] Further explanation: The first piston cylinder 6 and the second piston cylinder 11 contain hydraulic oil. The tray 1 is placed on the ground. The extrusion plate 32 is squeezed by the gravity of the tray 1, causing the movable plate 10 and the extrusion plate 32 to slide into the inner cavity 9. The rack plate 24 is driven by the connecting rod 18 to move upward. The upward movement of the rack plate 24 drives the gear 23 to rotate the valve 22 to open. The heavy object to be lifted is placed on the placement plate 5. After the automatic adjustment of the entire device is completed, the tray 1 is lifted off the ground by the crane. Under the action of the return spring 33, the movable plate 10 and the extrusion plate 32 are reset, and the rack plate 24 is driven downward, causing the gear 23 to drive the valve 22 to close. In this way, the hydraulic oil in the first piston cylinder 6 and the second piston cylinder 11 can be locked, making it difficult to move. As a result, the placement plate 5 will not move when it is lifted.

[0042] The upper end of the movable plate 10 is provided with four T-shaped arc grooves 30, and the center of the arc groove 30 coincides with the axis of the short rod 7; a T-block 27 is slidably connected in the arc groove 30, and the connecting rod 18 is rotatably installed on the T-block 27; therefore, when the movable plate 10 moves up and down, it can drive the T-block 27 and the connecting rod 18 to move up and down, and the up and down movement of the connecting rod 18 drives the rack plate 24 to move up and down, thereby driving the gear 23 to rotate, and the rotation of the gear 23 can control the opening and closing of the valve 22.

[0043] A driving column 14 capable of driving the support column 8 to move is movably connected in the second piston cylinder 11, and a second movable piston 28 is slidingly connected in the second piston cylinder 11. The driving column 14 is fixed on the second movable piston 28, and the end of the driving column 14 is rotatably connected to a connecting shaft 29, which is fixed on the mounting block 12.

[0044] When a heavy object that needs to be lifted is placed on the placement plate 5, the center of gravity of the placement plate 5 will shift and tilt. The placement plate 5 tilts and squeezes the squeezing column 16, which is driven by the first piston cylinder 6 and the second piston cylinder 11 to drive the driving column 14 and the support column 8 to move, so that the position of the placement plate 5 changes in the adjustment groove 4, and the center of gravity of the placement plate 5 with the heavy object placed thereon changes, so that the tray 1 is in a horizontal state when it is lifted, and the driving column 14 can be locked when the tray 1 moves up.

[0045] When a heavy object needs to be placed on the tray 5, the crane sling anti-sway control device will initiate a series of dynamic adjustment processes to ensure that the tray 1 can remain horizontal when it is lifted. The following is a detailed description:

[0046] Before a heavy object is placed on the tray 5, the support column 8, and the entire tray 1 system are in a relatively balanced state. The hydraulic oil in the first piston cylinder 6 and the second piston cylinder 11 is also in a static state, and the valve 22 is in an open state, allowing the hydraulic oil to flow between the first piston cylinder 6 and the second piston cylinder 11.

[0047] Once a heavy object is placed on the placement plate 5, the weight of the object and the possible shift in its center of gravity will cause the placement plate 5 to tilt. This tilt causes the universal shaft 15 at the bottom of the placement plate 5 to rotate, squeezing the connected squeezing rod 16. The movement of the squeezing rod 16 pushes the first movable piston 19 in the first piston cylinder 6 downward, compressing the return spring 20.

[0048] At the same time, the hydraulic oil in the first piston cylinder 6 flows through the delivery pipe 21 to the second piston cylinder 11. This influx of hydraulic oil pushes the second movable piston 28 forward. The movement of the second movable piston 28 drives the drive column 14 fixed to it. The drive column 14 is connected to the mounting block 12 via the connecting shaft 29. Therefore, the movement of the drive column 14 drives the support column 8 and the entire placement plate 5 to move within the adjustment slot 4.

[0049] As the tray 5 moves in the adjustment slot 4, its center of gravity will gradually change. This change will continue until the tray 5 reaches a new equilibrium state, where the pallet 1 remains horizontal when it is lifted.

[0050] When pallet 1 is ready to be lifted, as it gradually leaves the ground, movable plate 10 and squeeze plate 32 return to their original positions under the action of return spring 33. The return of squeeze plate 32 drives linkage rod 18 and rack plate 24 downward, which in turn drives gear 23 to rotate and close valve 22. Closing valve 22 locks the hydraulic oil in first and second piston cylinders 6 and 11, preventing them from moving after pallet 1 is lifted.

[0051] In this way, the positions of the placement plate 5 and the pallet 1 are locked in a horizontal state, ensuring stability and safety during the lifting process.

[0052] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An anti-sway control device for crane spreaders used in hydropower stations and ports, comprising a tray (1), characterized in that: The upper end of the tray (1) is provided with an adjustment groove (4), a support column (8) is movably connected in the adjustment groove (4), a universal shaft (15) is installed on the upper end of the support column (8), a placement plate (5) located in the adjustment groove (4) and movable in the adjustment groove (4) is fixed on the upper end of the universal shaft (15), and four adjustment mechanisms capable of adjusting the positions of the support column (8) and the placement plate (5) are installed in the adjustment groove (4), and the adjustment mechanism includes a first piston cylinder (6) and a second piston cylinder (11) installed in the adjustment groove (4), an extrusion column (16) is movably provided in the first piston cylinder (6), and the extrusion column (16) is initially against the bottom of the placement plate (5) and the extrusion column (16) The upper end is arranged in an arc shape, and a driving column (14) capable of driving the support column (8) to move is movably connected in the second piston cylinder (11). When a heavy object to be lifted is placed on the placement plate (5), the center of gravity of the placement plate (5) will be offset and tilted. The placement plate (5) tilts and squeezes the squeezing column (16), and the first piston cylinder (6) and the second piston cylinder (11) drive the driving column (14) and the support column (8) to move, so that the position of the placement plate (5) changes in the adjustment groove (4), and the center of gravity of the placement plate (5) with the heavy object placed thereon changes, so that the tray (1) is in a horizontal state when it is lifted, and the driving column (14) can be locked when the tray (1) moves upward; The bottom of the support column (8) is fixedly connected to a mounting block (12), and a plurality of balls (13) are mounted on the bottom of the mounting block (12); The inner bottom of the regulating groove (4) is rotatably connected to a short rod (7), the first piston cylinder (6) is fixed on the short rod (7), the first movable piston (19) is slidably connected in the first piston cylinder (6), the bottom of the first movable piston (19) is fixed with a return spring (20), the lower end of the return spring (20) is fixedly connected to the inner bottom of the first piston cylinder (6), and the first piston cylinder (6) is connected to the second piston cylinder (11) through a delivery pipe (21); A second movable piston (28) is slidably connected in the second piston cylinder (11), the driving column (14) is fixed on the second movable piston (28), and the end of the driving column (14) is rotatably connected to a connecting shaft (29), and the connecting shaft (29) is fixed on the mounting block (12); The delivery pipe (21) is provided with a valve (22), the valve (22) is provided with a gear (23), the gear (23) is rotated to control the opening and closing of the valve (22), the gear (23) is meshed with a rack plate (24), the bottom of the rack plate (24) is fixedly connected to a linkage rod (18), the tray (1) is provided with an inner cavity (9), a movable plate (10) capable of being reset is slidably connected in the inner cavity (9), the upper end of the movable plate (10) is provided with four T-shaped arc grooves (30), a T-block (27) is slidably connected in the arc groove (30), and the linkage rod (18) is rotatably mounted on the T-block (27); Four return springs (33) are fixed to the upper end of the movable plate (10), and the return springs (33) are fixed to the inner top of the inner cavity (9). The bottom of the movable plate (10) is fixedly connected to an extrusion plate (32). A through slot (31) communicating with the inner cavity (9) is provided through the bottom of the tray (1), and the extrusion plate (32) passes through the through slot (31) and is slidably arranged. The center of the arc-shaped groove (30) coincides with the axis of the short rod (7); The adjustment groove (4) is connected to the inner cavity (9) through the strip groove (17), and the connecting rod (18) is arranged to pass through the strip groove (17), and the connecting rod (18) can move forward, backward, left, right, and up and down in the strip groove (17).

2. The anti-sway control device for crane spreaders used in hydropower stations and ports according to claim 1, characterized in that: A protective fence (2) is installed at the upper end of the pallet (1), an openable switch door is provided on the protective fence (2), and a lifting hook (3) connected to a crane is installed on the protective fence (2).

3. The anti-sway control device for crane spreaders used in hydropower stations and ports according to claim 1, characterized in that: A fixed block (25) is mounted on the second piston cylinder (11), and a limiting wheel (26) is rotatably connected to the fixed block (25), and the limiting wheel (26) abuts against the rack plate (24).

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