Anti-swing control device of crane sling for hydropower station and port

Abstract

The invention discloses a crane sling anti-swing control device for a hydropower station and a port, which comprises a tray, an extrusion column is movably arranged in a first piston cylinder, when a heavy object to be lifted is placed on a placing disc, the gravity center of the placing disc shifts and inclines, and the placing disc inclines to extrude the extrusion column, so that the heavy object can be lifted. The positions of the driving column and the supporting column are driven in a transmission mode through the first piston cylinder and the second piston cylinder, so that the position of the containing disc is changed in the adjusting groove, the gravity center of the containing disc containing heavy objects is changed, the tray is in a horizontal state when being lifted, and the driving column can be locked when the tray moves upwards. The lifting device is suitable for lifting heavy objects with different weights and shapes, when the heavy objects are placed on the placing disc, the placing disc is automatically adjusted by utilizing unbalanced weight distribution of the heavy objects, the problem of swinging of the lifted objects caused by overweight of the goods is effectively solved, and the lifting stability and safety are improved.

Description

Technical Field

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

[0002] The phenomenon of crane hoist swinging during use may be caused by many factors. For example, improper operation: starting or braking too quickly or too hard: when the crane's trolley or car starts or brakes, if the speed changes too quickly, the load will maintain its original state of motion due to inertia, causing swinging. Unskilled operation: The operator's lack of skill in controlling the crane may also cause the load to swing greatly during starting or braking. However, this factor can be solved by repeated practice and attention of the operator.

[0003] However, for example, improper placement: if the weight is placed on one side of the pallet, the load will sway during the lifting process, and 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, 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, two lifting ropes are wound around the main drums, and four anti-sway drums are provided in the middle of the trolley frame.

[0004] The above-mentioned prior art cannot help to balance the sling loaded with cargo before lifting. Although the swaying is suppressed by anti-sway pulleys and drums, 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 swaying and cargo sliding.

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

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A sling anti-sway control device for cranes used in hydropower stations and ports comprises a tray, an upper end of the tray is provided with an adjustment groove, a support column is movably connected in the adjustment groove, a universal shaft is installed on the upper end of the support column, a placement plate located in the adjustment groove and movable in the adjustment groove is fixed on the upper end of the universal shaft, an adjustment mechanism capable of adjusting the positions of the support column and the placement plate is installed in the adjustment groove, the adjustment mechanism comprises a first piston cylinder and a second piston cylinder installed in the adjustment groove, an extrusion column is movably provided in the first piston cylinder, the extrusion column is initially abutted against the bottom of the placement plate and the upper end of the extrusion column is arranged in an arc shape, a driving column capable of driving the support column to move is movably connected in the second piston cylinder, when a heavy object to be lifted is placed on the placement plate, the center of gravity of the placement plate will be offset and tilted, the placement plate tilts and squeezes the extrusion column, the first piston cylinder and the second piston cylinder drive the driving column and the position of the support column, so that the position of the placement plate changes in the adjustment groove, the center of gravity of the placement plate with the heavy object placed changes, the tray is in a horizontal state when being lifted, and the driving column can be locked when the tray moves upward.

[0008] 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.

[0009] Preferably, a mounting block is fixedly connected to the bottom of the support column, and a plurality of balls are installed at the bottom of the mounting block.

[0010] Preferably, the inner bottom of the adjusting groove is rotatably connected with a short rod, the first piston cylinder is fixed on the short rod, the first movable piston is slidably connected inside the first piston cylinder, a return spring is fixed to the bottom of the first movable piston, 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.

[0011] 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.

[0012] 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, and the connecting rod is rotatably installed on the T-block.

[0013] 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 abuts against the rack plate.

[0014] Preferably, four return springs are fixed to the upper end of the movable plate, and 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. A through groove communicating with the inner cavity is penetrated through the bottom of the tray, and the extrusion plate penetrates the through groove and is slidably arranged.

[0015] Preferably, the center of the arc-shaped groove coincides with the axis of the short rod.

[0016] Preferably, the adjustment groove is connected with the inner cavity through a strip groove, the connecting rod is arranged to penetrate the strip groove, and the connecting rod can move forward, backward, left, right, and up and down in the strip groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. When a heavy object is placed on the placement plate, its center of gravity is automatically detected and adjusted. Through the coordinated action of the extrusion column, the first piston cylinder, the second piston cylinder and the driving column, the placement plate is dynamically adjusted in the adjustment slot to ensure that the pallet is in a horizontal state when it is lifted. This function effectively solves the problem of swaying of the hanging object caused by the overweight of the cargo and improves the stability and safety of the lifting.

[0018] 2. When the pallet is ready to be lifted, the movable plate and the squeeze plate will reset under the action of the return spring, driving the linkage rod and the rack plate to move downward, and then closing the valve to lock the hydraulic oil in the first piston cylinder and the second piston cylinder. This locking mechanism ensures the stability of the position of the plate and the pallet during the lifting process and prevents swaying caused by the movement of the hydraulic oil.

[0019] 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.

[0020] 4. Compared with the traditional method that requires operators 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 skill level of the operator.

[0021] In summary, the present invention is suitable for lifting heavy objects of different weights and shapes. When the heavy objects are placed on the placing plate, the placing plate is automatically adjusted due to the unbalanced weight distribution of the heavy objects, which effectively solves the problem of swaying of the hanging objects caused by the heavy cargo and improves the stability and safety of the lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of an anti-sway control device for crane hoisting equipment used in hydropower stations and ports proposed by the present invention; Figure 2 A bottom view of an anti-sway control device for crane spreaders used in hydropower stations and ports proposed by the present invention; Figure 3 A cross-sectional view of an anti-sway control device for crane spreaders used in hydropower stations and ports proposed by the present invention; Figure 4 This is a schematic diagram of the interior of an adjustment tank in an anti-sway control device for crane hoisting equipment used in a hydropower station and a port proposed by the present invention; Figure 5 A sectional front view of an anti-sway control device for crane spreaders used in hydropower stations and ports proposed by the present invention; Figure 6 A schematic diagram of an adjustment slot in an anti-sway control device for crane hoisting equipment used in a hydropower station and a port proposed by the present invention; Figure 7 This is a schematic structural diagram of the splitting of the first piston cylinder and the second piston cylinder in the anti-sway control device for crane hoisting equipment used in hydropower stations and ports proposed by the present invention; Figure 8 The present invention is a schematic structural diagram of a movable plate in an anti-sway control device for crane hoisting equipment used in hydropower stations and ports.

[0023] 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 shaft, 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

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present 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 can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. 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.

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0026] Reference Figure 1-Figure 8 A sway control device for crane hoisting equipment used in hydropower stations and ports comprises a tray 1, wherein a protective fence 2 is installed at the upper end of the tray 1, a switch door that can be opened is provided on the protective fence 2, and a lifting buckle 3 connected to the crane is installed on the protective fence 2. An adjustment groove 4 is provided at the upper end of the tray 1, a support column 8 is movably connected in the adjustment groove 4, a mounting block 12 is fixedly connected to the bottom of the support column 8, and a plurality of balls 13 are installed at the bottom of the mounting block 12, which can support the mounting block 12 through the balls 13, and also facilitate the movement of the mounting block 12, so as to adjust the mounting block 12 later.

[0027] A universal shaft 15 is installed at the upper end of the support column 8, and a placement plate 5 located in the adjusting groove 4 and movable in the adjusting groove 4 is fixed to the upper end of the universal shaft 15. An adjusting mechanism capable of adjusting the positions of the support column 8 and the placement plate 5 is installed in the adjusting groove 4. The adjusting mechanism includes a first piston cylinder 6 and a second piston cylinder 11 installed in the adjusting groove 4. An extrusion column 16 is movably provided in the first piston cylinder 6. In the initial state, the extrusion column 16 abuts against the bottom of the placement plate 5 and the upper end of the extrusion column 16 is arranged in an arc shape. A short rod 7 is rotatably connected to the inner bottom of the adjusting groove 4, and the first piston cylinder 6 is fixed on the short rod 7. The arrangement of the short shaft 7 provides conditions for the rotation direction required for subsequent adjustment of the position of the placement plate 5.

[0028] 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 , and the first piston cylinder 6 is connected to the second piston cylinder 11 through a delivery pipe 21 .

[0029] 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 meshed on 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.

[0030] The bottom of the rack plate 24 is fixedly connected with a linkage rod 18 . The adjustment slot 4 is connected with the inner cavity 9 through the strip slot 17 . The linkage rod 18 passes through the strip slot 17 and can move forward, backward, left, right, up and down in the strip slot 17 .

[0031] An inner cavity 9 is provided on the tray 1, and a movable plate 10 capable of being 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 penetrated at the bottom of the tray 1, and the extrusion plate 32 penetrates the through groove 31 and is slidably arranged.

[0032] 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, so that the movable plate 10 and the extrusion plate 32 slide into the inner cavity 9. The rack plate 24 is driven by the linkage rod 18 to move up. The rack plate 24 moves up and drives the gear 23 to turn the valve 22 to open. The heavy objects to be lifted are 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 then the rack plate 24 is driven to move down so that the gear 23 drives 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, and then the placement plate 5 will not move when it is lifted and moved.

[0033] Four T-shaped arc grooves 30 are provided at the upper end of the movable plate 10, 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.

[0034] A driving column 14 capable of driving the support column 8 to move is movably connected inside the second piston cylinder 11, a second movable piston 28 is slidably connected inside 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.

[0035] 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 drives the driving column 14 and the support column 8 through the first piston cylinder 6 and the second piston cylinder 11, 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 on it 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.

[0036] When a heavy object needs to be placed on the tray 5, the crane sling anti-sway control device will start a series of dynamic adjustment processes to ensure that the tray 1 can remain horizontal when being lifted. The following is a detailed description: Before placing any heavy objects, the placing plate 5, the supporting 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, so that the hydraulic oil can flow between the first piston cylinder 6 and the second piston cylinder 11.

[0037] Once a heavy object is placed on the placement plate 5, the placement plate 5 will tilt due to the weight of the heavy object and possible center of gravity deviation. This tilting will cause the universal shaft 15 at the bottom of the placement plate 5 to rotate and squeeze the squeezing column 16 connected thereto. The movement of the squeezing column 16 will push the first moving piston 19 in the first piston cylinder 6 to move downward, compressing the return spring 20.

[0038] At the same time, the hydraulic oil in the first piston cylinder 6 will flow to the second piston cylinder 11 through the delivery pipe 21, and the inflow of the hydraulic oil will push the second movable piston 28 to move forward. The movement of the second movable piston 28 will drive the driving column 14 fixed thereon to move. The driving column 14 is connected to the mounting block 12 through the connecting shaft 29, so the movement of the driving column 14 will drive the supporting column 8 and the entire placement plate 5 to move in the adjustment groove 4.

[0039] As the placement tray 5 moves in the adjustment slot 4, its center of gravity will gradually change. This change will continue until the placement tray 5 reaches a new equilibrium state, that is, the tray 1 can maintain a horizontal state when it is lifted.

[0040] When the pallet 1 is ready to be lifted, as the pallet 1 gradually leaves the ground, the movable plate 10 and the squeeze plate 32 will be reset under the action of the return spring 33. The reset of the squeeze plate 32 will drive the linkage rod 18 and the rack plate 24 to move downward, thereby driving the gear 23 to rotate and close the valve 22. The closing of the valve 22 will lock the hydraulic oil in the first piston cylinder 6 and the second piston cylinder 11 to prevent them from moving after the pallet 1 is lifted.

[0041] In this way, the positions of the placement plate 5 and the tray 1 are locked in a horizontal state, ensuring stability and safety during the lifting process.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope 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), an adjustment mechanism capable of adjusting the positions of the support column (8) and the placement plate (5) is installed in the adjustment groove (4), and the adjustment mechanism comprises 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 abutted against the bottom of the placement plate (5) and the extrusion column (11) is arranged on the upper end of the support column (8). 6) 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 shift and tilt. The placement plate (5) tilts and squeezes the squeezing column (16). The first piston cylinder (6) and the second piston cylinder (11) drive the driving column (14) and the support column (8) to change the position of the placement plate (5) in the adjustment groove (4), so that 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 being lifted, and the driving column (14) can be locked when the tray (1) moves upward.

2. The anti-sway control device for crane hoisting equipment 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), a switch door that can be opened is provided on the protective fence (2), and a lifting buckle (3) connected to a crane is installed on the protective fence (2).

3. The anti-sway control device for crane hoisting equipment used in hydropower stations and ports according to claim 1, characterized in that: The bottom of the support column (8) is fixedly connected to a mounting block (12), and the bottom of the mounting block (12) is mounted with a plurality of balls (13).

4. The anti-sway control device for crane hoisting equipment used in hydropower stations and ports according to claim 3, characterized in that: 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), 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), and the first piston cylinder (6) is connected to the second piston cylinder (11) via a delivery pipe (21).

5. The anti-sway control device for crane hoisting equipment used in hydropower stations and ports according to claim 4, characterized in that: A second movable piston (28) is slidably connected inside 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).

6. The anti-sway control device for crane hoisting equipment used in hydropower stations and ports according to claim 4, characterized in that: The delivery pipe (21) is provided with a valve (22), the valve (22) is provided with a gear (23), the gear (23) can control the opening and closing of the valve (22) by rotation, the gear (23) is meshed with a rack plate (24), the bottom of the rack plate (24) is fixedly connected with 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), four T-shaped arc grooves (30) are provided at the upper end of the movable plate (10), 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).

7. The anti-sway control device for crane hoisting equipment used in hydropower stations and ports according to claim 6, characterized in that: A fixing block (25) is mounted on the second piston cylinder (11), and a limiting wheel (26) is rotatably connected to the fixing block (25), wherein the limiting wheel (26) abuts against the rack plate (24).

8. The anti-sway control device for crane hoisting equipment used in hydropower stations and ports according to claim 1, characterized in that: 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 penetrated through the bottom of the tray (1), and the extrusion plate (32) penetrates the through slot (31) and is slidably arranged.

9. The anti-sway control device for crane hoisting equipment used in hydropower stations and ports according to claim 6, characterized in that: The center of the arc-shaped groove (30) coincides with the axis of the short rod (7).

10. The anti-sway control device for crane hoisting equipment used in hydropower stations and ports according to claim 6, characterized in that: The adjustment groove (4) is connected to the inner cavity (9) via the strip groove (17); the linkage rod (18) is arranged to penetrate the strip groove (17); and the linkage rod (18) can move forward, backward, left, right, and up and down in the strip groove (17).

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