A wave avoidance device for a chain bucket reclaiming system and a method of using the same

Abstract

The present invention relates to a wave avoidance device for a chain bucket reclaiming system and a use method thereof, comprising a chain bucket reclaiming system, a trolley is installed on the chain bucket reclaiming system, a connecting beam is installed on a supporting structure of the chain bucket reclaiming system, two ends of the connecting beam extend outward, and the connecting beam and the supporting structure form a cross form; two ends of the chain bucket reclaiming system are provided with relative fixed brackets, a single fixed bracket is in a "door"-shaped structure, a movable bracket is arranged inside the fixed bracket, and the movable bracket is lifted and lowered along the fixed bracket; two ends of the connecting beam are locked with the movable bracket by fasteners; two ends of the chain bucket reclaiming system are also respectively provided with lifting cylinders, the lifting cylinders are connected to the trolley, a pulley block is installed on the piston rod head of the lifting cylinder, a traction rope is wound around the pulley block, one end of the traction rope is fixed on the movable bracket, and the other end is fixed on the trolley, so as to work reliably.

Description

Technical Field

[0001] The invention relates to the technical field of continuous ship unloader equipment for bulk material docks, and in particular to a wave avoidance device for a chain bucket reclaiming system and a use method thereof. Background Art

[0002] Continuous ship unloader is a special machine that uses continuous conveying machinery to make a head that can lift bulk materials, or has the ability to take materials by itself, or is equipped with a material taking and feeding device to continuously take bulk materials out of the ship's cabin, and then unload them to the arm or frame and transport them to the main ground conveyor system on the shore. The use of ship unloaders can greatly improve the unloading efficiency, and the minimum dust pollution can keep the environment clean, which is efficient and environmentally friendly.

[0003] With the increasing requirements for high efficiency, environmental protection and energy saving of bulk cargo unloading equipment in ports, the current grab bucket ship unloaders can no longer meet this requirement. Chain bucket continuous ship unloaders are characterized by high efficiency, environmental protection and energy saving, but because the chain bucket reclaiming system is a rigid system operating in the cabin, there are problems such as uncontrollable excavation force of the chain bucket on the material pile, and the inability to safely and reliably clear the cabin and prevent surge protection. Summary of the invention

[0004] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a wave avoidance device for a chain bucket reclaiming system and a method of using the same, so that the device can conveniently avoid surges and has good working reliability.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A wave avoidance device for a chain bucket reclaiming system, comprising a chain bucket reclaiming system,

[0007] A trolley is installed on the chain bucket reclaiming system, and a connecting beam is installed on the supporting structure of the chain bucket reclaiming system. Both ends of the connecting beam extend outward, and the connecting beam and the supporting structure of the chain bucket reclaiming system form a cross-hinged form;

[0008] Relative fixed brackets are arranged at both ends of the chain bucket reclaiming system, and a single fixed bracket is in a "door"-shaped structure. A movable bracket is arranged inside the fixed bracket, and the movable bracket is lifted and lowered along the fixed bracket;

[0009] The two ends of the connecting beam are locked with the movable bracket by fasteners;

[0010] Lifting cylinders are installed at both ends of the chain bucket reclaiming system, which are connected to the trolley. A pulley block is installed at the head of the piston rod of the lifting cylinder, and a traction rope is wound around the pulley block. One end of the traction rope is fixed to the mobile bracket, and the other end is fixed to the trolley. Outer guide support wheels are installed at the upper outer sides of both ends of the fixed bracket, and inner guide support wheels are installed at the lower outer sides of both ends of the mobile bracket.

[0011] Its further technical solution is:

[0012] A force sensor is installed on the traction rope.

[0013] The traction rope is a flexible rope, and the traction rope releases the external pressure load.

[0014] The inner side of the mobile bracket is provided with a support frame through a support rod, and a pulley block is provided on the support frame through a support shaft.

[0015] A method for using a wave avoidance device of a chain bucket reclaiming system,

[0016] When the lifting cylinder is extended and retracted, the pulley block drives the free end of the traction rope to rise and fall, thereby driving the mobile bracket and the chain bucket reclaiming system to rise and fall as a whole.

[0017] The lifting speed of the chain bucket reclaiming system V = V 油缸 ×m

[0018] Where: m is the ratio of the pulley block;

[0019] During the tank cleaning operation, the working pressure of the lifting cylinder is adjusted according to the feedback value of the force sensor, so that the chain bucket reclaiming system and the remaining material layer are in a suspended contact state with low pressure to realize the tank cleaning operation of the chain bucket;

[0020] This force difference is ensured by the PLC system calculation through the working pressure of the lifting cylinder and the feedback data of the force sensor:

[0021] ΔF 1工作状态 =G 链斗系统 -F 提升油缸 ;

[0022] When there is a surge, the pile of materials in the cabin will generate an upward lifting force on the chain bucket reclaiming system. At this time, the force difference is:

[0023] ΔF 2工作状态 =G 链斗系统 -F 提升油缸 -F 料堆顶升力 ,

[0024] The chain bucket reclaiming system will move upward under the lifting force of the material pile. At this time, the flexible traction rope will actively release this lifting force, so that the chain bucket reclaiming system will automatically move upward with the material pile, and the mobile bracket will also move upward with the chain bucket reclaiming system. At the same time, the force sensor will transmit the force difference change signal to the PLC. The PLC will guide the lifting cylinder to extend quickly and put the flexible traction rope in a tensioned state to achieve a new balance, and accelerate the speed increase pulley group on the upper rod cavity of the lifting cylinder, so that the chain bucket reclaiming system can quickly break away from the material pile, thereby realizing anti-surge protection and avoiding damage to the chain bucket reclaiming system under the action of surge; when the surge disappears, the force sensor will send a signal again, and the lifting cylinder will retract quickly, so that the chain bucket will contact the material pile again and continue the reclaiming operation.

[0025] The beneficial effects of the present invention are as follows:

[0026] The present invention has a compact and reasonable structure and is easy to operate. The chain bucket material taking system is connected to the mobile bracket through a connecting beam, and the mobile bracket is connected to the lifting cylinder through a flexible traction rope. The lifting of the traction rope and the mobile bracket is driven by the extension and retraction of the lifting cylinder to drive the lifting of the chain bucket system. A force detection sensor is provided, and the contact pressure between the chain bucket and the material pile is adjusted through PLC calculation based on the feedback data of the force sensor. When the force difference change detected by the force sensor reaches the designed protection value, the lifting cylinder will quickly follow the action of the flexible traction rope and accelerate through the pulley block to achieve rapid avoidance of surges.

[0027] The main function of the present invention is to provide the chain bucket system with corresponding contact force between the chain bucket and the material pile according to different working material characteristics, so as to ensure that the chain bucket has sufficient positive excavation force on the material pile; and the feeding depth of the chain bucket can be controlled by lifting and lowering the mobile bracket, so as to realize layered material taking and floating cabin cleaning, and at the same time has the function of avoiding surge. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is the front view of the present invention.

[0029] Figure 2 for Figure 1 Side view of (the trolley is omitted).

[0030] Figure 3 for Figure 1 Top view of (the trolley is omitted).

[0031] Among them: 1. Mobile bracket; 2. Fixed bracket; 3. Outer guide support wheel; 4. Inner guide support wheel; 5. Lifting cylinder; 6. Support frame; 7. Force sensor; 8. Pulley block; 9. Traction rope; 10. Connecting beam; 11. Chain bucket reclaiming system; 12. Trolley. DETAILED DESCRIPTION

[0032] The specific implementation of the present invention is described below in conjunction with the accompanying drawings.

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, the wave avoidance device of the chain bucket reclaiming system of this embodiment includes a chain bucket reclaiming system 11,

[0034] A trolley 12 is installed on the chain bucket reclaiming system 11, and a connecting beam 10 is installed on the supporting structure of the chain bucket reclaiming system 11. Both ends of the connecting beam 10 extend outward, and the connecting beam 10 and the supporting structure of the chain bucket reclaiming system 11 form a cross-hinged form;

[0035] Relative fixed brackets 2 are arranged at both ends of the chain bucket reclaiming system 11. A single fixed bracket 2 is in a "door"-shaped structure. A movable bracket 1 is arranged inside the fixed bracket 2. The movable bracket 1 is lifted and lowered along the fixed bracket 2.

[0036] Both ends of the connecting beam 10 are locked with the movable bracket 1 by fasteners;

[0037] Lifting cylinders 5 are also installed at both ends of the chain bucket reclaiming system 11, which are connected to the trolley 12. A pulley block 8 is installed on the piston rod head of the lifting cylinder 5, and a traction rope 9 is wound around the pulley block 8. One end of the traction rope 9 is fixed to the mobile bracket 1, and the other end is fixed to the trolley 12; outer guide support wheels 3 are installed at the upper outer sides of both ends of the fixed bracket 2, and inner guide support wheels 4 are installed at the lower positions of both ends of the mobile bracket 1.

[0038] A force sensor 7 is installed on the traction rope 9.

[0039] The traction rope 9 is a flexible rope, and the traction rope 9 releases the external pressure load.

[0040] A support frame 6 is installed on the inner side of the mobile bracket 1 through a support rod, and a pulley block 8 is installed on the support frame 6 through a support shaft.

[0041] How to use the wave avoidance equipment of the chain bucket reclaiming system,

[0042] When the lifting cylinder 5 performs a telescopic action, the free end of the traction rope 9 is driven to rise and fall through the pulley block 8, thereby driving the mobile bracket 1 and the chain bucket reclaiming system 11 to rise and fall as a whole.

[0043] The lifting speed V of the chain bucket reclaiming system 11 is V 油缸 ×m

[0044] Where: m is the ratio of the pulley block 8;

[0045] During the tank cleaning operation, the working pressure of the lifting cylinder 5 is adjusted according to the feedback value of the force sensor 7, so that the chain bucket reclaiming system 11 and the remaining material layer are in a suspended contact state with a small pressure, so as to realize the tank cleaning operation of the chain bucket;

[0046] The force difference is ensured by the PLC system calculation through the working pressure of the lifting cylinder 5 and the feedback data of the force sensor 7:

[0047] ΔF 1工作状态 =G 链斗系统 -F 提升油缸 .

[0048] When there is a surge, the pile of materials in the cabin will generate an upward lifting force on the chain bucket system. At this time, the force difference is:

[0049] ΔF 2工作状态 =G 链斗系统 -F 提升油缸 -F 料堆顶升力 ,

[0050] The chain bucket reclaiming system 11 will move upward under the lifting force of the material pile. At this time, the flexible traction rope 9 will actively release this lifting force, so that the chain bucket reclaiming system 11 will automatically move upward with the material pile, and the mobile bracket 1 will also move upward with the chain bucket reclaiming system 11. At the same time, the force sensor 7 will transmit the force difference change signal to the PLC, and the PLC will guide the lifting cylinder 5 to extend quickly and make the flexible traction rope 9 in a tensioned state to achieve a new balance, and accelerate the upper speed increase pulley group 8 of the rod cavity of the lifting cylinder 5, so that the chain bucket reclaiming system 11 can quickly break away from the material pile, thereby realizing anti-surge protection and avoiding damage to the chain bucket reclaiming system 11 under the action of surge; when the surge disappears, the force sensor 7 will send a signal again, and the lifting cylinder 5 will retract quickly, so that the chain bucket will contact the material pile again and continue the material reclaiming operation.

[0051] The specific structure and functions of the present invention are as follows:

[0052] It mainly includes a movable bracket 1, a fixed bracket 2, an outer guide support wheel 3, an inner guide support wheel 4, a lifting cylinder 5, a support frame 6, a force sensor 7, a pulley block 8, a traction rope 9 and a connecting beam 10.

[0053] The mobile bracket 1 is sleeved in the fixed bracket 2, and the outer guide support wheel 3 and the inner guide support wheel 4 are respectively installed on the upper part of the fixed bracket 2 and the lower part of the mobile bracket 1;

[0054] The fixed end of the rodless chamber of the lifting cylinder 5 is installed on the chain bucket system 11 trolley through a hinge shaft, the pulley block 8 is installed on the head of the piston rod of the lifting cylinder 5, the traction rope 9 is wound around the pulley block 8, one end of the traction rope 9 is fixed on the mobile bracket 1, and the other end is fixed on the chain bucket system trolley through a connecting seat, and a force sensor 7 is installed.

[0055] In order to ensure that the oil cylinder does not deflect during the lifting process, a support frame 6 is provided, and the support shaft of the pulley block 8 at the head of the oil cylinder piston rod is sleeved in the oil cylinder guide frame to play a supporting and guiding role.

[0056] The connecting beam 10 is sleeved in the upper supporting structure of the chain bucket system through a hinge shaft connection to form a cross connection form, and is connected and fixed to the mobile bracket 1.

[0057] In actual use:

[0058] When the lifting cylinder 5 performs a telescopic action, the free end of the traction rope 9 is driven up and down through the pulley block 8, thereby driving the moving bracket 1 and the chain bucket system to rise and fall as a whole.

[0059] Chain bucket system lifting speed V = V 油缸 ×m

[0060] Wherein: m is the ratio of the pulley block 8, and the ratio of the pulley block 8 can be comprehensively considered according to factors such as the surge response speed in the operating area and the chain bucket lifting height.

[0061] The lifting speed of the chain bucket lifting system is increased by the pulley block 8, and the contact pressure between the chain bucket reclaiming system and the material pile is detected and fed back in real time by the force sensor 7, so as to adjust the feeding depth and digging force of the chain bucket system for materials with different characteristics, and keep the chain bucket and the material pile in a constant pressure contact state.

[0062] During the tank cleaning operation, the working pressure of the lifting cylinder 5 is adjusted according to the feedback value of the force sensor 7, so that the chain bucket system and the remaining material layer are in a suspended contact state with a small pressure to realize the tank cleaning operation of the chain bucket. At the same time, the small contact force can avoid damage to the cabin bottom plate when the chain bucket contacts the cabin bottom plate.

[0063] The chain bucket reclaiming system is a rigid system. When the chain bucket system is operating in the cabin, the hull rises and falls due to the surge, which in turn causes the pile of materials in the cabin and the chain bucket system to generate horizontal and vertical forces. This force will have an adverse effect on the safety of the chain bucket ship unloader and the hull. In order to ensure the safe operation of the chain bucket ship unloader, a relatively stable force difference will be formed between the chain bucket system and the pile of materials based on the surge data of the operating area and the characteristics of the operating materials. This force difference is guaranteed by the working pressure of the lifting cylinder 5 of the present invention and the feedback data of the force sensor 7 through the PLC system calculation:

[0064] ΔF 1工作状态 =G 链斗系统 -F 提升油缸 .

[0065] When there is a surge, the pile of materials in the cabin will generate an upward lifting force on the chain bucket system. At this time, the force difference is:

[0066] ΔF 2工作状态 =G 链斗系统 -F 提升油缸 -F 料堆顶升力 ,

[0067] The chain bucket reclaiming system 11 will move upward under the lifting force of the material pile. At this time, the flexible traction rope 9 will actively release this lifting force, so that the chain bucket system automatically moves upward with the material pile, and the mobile bracket 1 also moves upward with the chain bucket system. At the same time, the force sensor 7 transmits the force difference change signal to the PLC. The PLC will guide the lifting cylinder 5 to extend quickly and put the flexible traction rope 9 in a tensioned state to achieve a new balance, and accelerate the upper speed increase pulley group 8 of the rod cavity of the lifting cylinder 5, so that the chain bucket system can quickly break away from the material pile, thereby realizing anti-surge protection and avoiding damage to the chain bucket system under the action of surge. When the surge disappears, the force sensor 7 will send a signal again, and the lifting cylinder 5 will quickly retract, so that the chain bucket will contact the material pile again and continue the material reclaiming operation. The whole process responds quickly, safely and reliably, and does not affect the operating efficiency of the chain bucket reclaiming system 11.

[0068] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A wave avoidance device for a chain bucket reclaiming system, comprising a chain bucket reclaiming system (11), characterized in that: A trolley (12) is installed on the chain bucket reclaiming system (11), and a connecting beam (10) is installed on the supporting structure of the chain bucket reclaiming system (11), and both ends of the connecting beam (10) extend outwards, and the connecting beam (10) and the supporting structure of the chain bucket reclaiming system (11) form a cross-hinged form; Relative fixed supports (2) are arranged at both ends of the chain bucket reclaiming system (11), and a single fixed support (2) is in a "door"-shaped structure. A movable support (1) is arranged inside the fixed support (2), and the movable support (1) rises and falls along the fixed support (2); The two ends of the connecting beam (10) are locked with the movable bracket (1) via fasteners; Lifting cylinders (5) are respectively installed at both ends of the chain bucket reclaiming system (11), and the lifting cylinders (5) are connected to the trolley (12). A pulley block (8) is installed at the piston rod head of the lifting cylinder (5), and a traction rope (9) is wound around the pulley block (8). One end of the traction rope (9) is fixed to the mobile bracket (1), and the other end is fixed to the trolley (12); outer guide support wheels (3) are respectively installed at the upper positions of the outer sides of the two ends of the fixed bracket (2), and inner guide support wheels (4) are respectively installed at the lower positions of the two ends of the mobile bracket (1); a force sensor (7) is installed on the traction rope (9); the traction rope (9) adopts a flexible soft rope, and the traction rope (9) releases external pressure load; a support frame (6) is installed on the inner side of the mobile bracket (1) through a support rod, and a pulley block (8) is installed on the support frame (6) through a support shaft.

2. A method for using the wave avoidance device of the chain bucket reclaiming system according to claim 1, characterized in that: When the lifting cylinder (5) performs a telescopic action, the free end of the traction rope (9) is driven to rise and fall through the pulley block (8), thereby driving the movable bracket (1) and the chain bucket reclaiming system (11) to rise and fall as a whole. The lifting speed V of the chain bucket reclaiming system (11) is V 油缸 ×m Where: m is the ratio of the pulley block (8); During the tank cleaning operation, the working pressure of the lifting cylinder (5) is adjusted according to the feedback value of the force sensor (7), so that the chain bucket material taking system (11) and the remaining material layer are in a suspended contact state with a small pressure, thereby realizing the tank cleaning operation with the chain bucket; The force difference is ensured by the working pressure of the lifting cylinder (5) and the feedback data of the force sensor (7) through the PLC system calculation: ΔF 1工作状态 =G 链斗系统 -F 提升油缸 ; When there is a surge, the pile of materials in the cabin will generate an upward lifting force on the chain bucket reclaiming system (11). At this time, the force difference is: ΔF 2工作状态 =G 链斗系统 -F 提升油缸 -F 料堆顶升力 , The chain bucket reclaiming system (11) will move upward under the lifting force of the material pile. At this time, the flexible traction rope (9) will actively release the lifting force, so that the chain bucket reclaiming system (11) automatically moves upward with the material pile, and the mobile bracket (1) also moves upward with the chain bucket reclaiming system (11). At the same time, the force sensor (7) transmits the force difference change signal to the PLC, and the PLC will guide the lifting cylinder (5) to extend quickly and put the flexible traction rope (9) in a tensioned state again to achieve a new balance, and accelerate the upper speed increase pulley group (8) of the rod chamber of the lifting cylinder (5), so that the chain bucket reclaiming system (11) can quickly break away from the material pile, thereby realizing anti-surge protection and preventing the chain bucket reclaiming system (11) from being damaged under the action of surge; when the surge disappears, the force sensor (7) will send a signal again, and the lifting cylinder (5) will retract quickly, so that the chain bucket and the material pile will contact again, and the reclaiming operation will continue.

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