Grab bucket dredger overload working method, server and storage medium

Abstract

The application provides a grab bucket dredger overload working method, a server and a storage medium, and relates to the technical field of hoisting equipment.The grab bucket dredger overload working method closes a brake installed on a winch when the grab bucket dredger is in an overload working state of grabbing or lifting, the brake brakes and locks the winch, the winch stops winding the steel wire rope, then an overload working mechanism installed on the grab bucket dredger is opened, the overload working mechanism is elongated, the length of the steel wire rope wound on the overload working mechanism is increased, the length of the steel wire rope between the overload working mechanism and the grab bucket is shortened, the grabbing of the grab bucket can be closed or the grab bucket can be lifted, the problem that the static hydraulic transmission system cannot work under overload due to the low pressure tolerance of components is avoided, and the overload working needs of the grab bucket dredger during the grabbing and lifting of the grab bucket can be met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hoisting equipment, in particular to a grab bucket dredger overload working method, a server and a storage medium. BACKGROUND

[0002] In port dredging, developing deep water harbor basin and anchorage wharf engineering operations, one of the commonly used engineering machinery equipment is the grab bucket dredger, which is mainly applied to the regions and occasions where the cutter suction and rake suction dredgers are not suitable for deployment, and has the characteristics of small working radius, high flexibility, shallow draft and high positioning accuracy.

[0003] The grab bucket dredger mainly realizes excavation through the grabbing action of the grab bucket, and realizes the lifting and placement of the excavated materials of the grab bucket through the lifting and lowering action of the winch and steel wire rope. Therefore, the grabbing and lifting of the grab bucket are the main way for the grab bucket dredger to achieve the purpose of operation.

[0004] The grabbing and lifting of the grab bucket of the grab bucket dredger are mainly realized by the winding and unwinding of the steel wire rope by the winch. The working load of the winch is crucial to the realization of the grabbing and lifting of the grab bucket. However, the overload ratio that the winch of the grab bucket dredger using conventional static hydraulic transmission can achieve when winding and unwinding the steel wire rope is low. In some engineering operations, the grab bucket cannot realize overload operation, which is not conducive to the normal progress of engineering operations. SUMMARY

[0005] The problem solved by the present application is how to meet the overload working needs of the grab bucket dredger during the grabbing and lifting of the grab bucket.

[0006] To solve the above problems, on the one hand, the present application provides a grab bucket dredger overload working method, which is applied to a grab bucket dredger installed with an overload working mechanism, a winch, a steel wire rope and a grab bucket. The overload working mechanism is used to stretch and retract to adjust the length of the steel wire rope wound on the overload working mechanism. The winch is installed with a brake. The grab bucket dredger overload working method comprises:

[0007] Real-time monitoring whether the grab bucket meets the first overload working condition during grabbing or lifting, wherein the first overload working condition is that the pressure of the winch winding the steel wire rope is greater than the rated pressure;

[0008] If yes, it is determined that the overload working state is met, the brake is closed, and the winding of the steel wire rope by the winch is stopped;

[0009] Turning on the overload working mechanism, driving the overload working mechanism to elongate, increasing the length of the steel wire rope wound on the overload working mechanism, so as to reduce the length of the steel wire rope between the overload working mechanism and the grab bucket;

[0010] If no, it is determined that the normal working state.

[0011] Compared with the prior art, the beneficial effects of the grab bucket type dredger overload working method of the application include: for the grab bucket type dredger when the grab bucket is grabbing or lifting, the pressure of the winch winding the steel wire rope, that is, the lifting force of the grab bucket lifting or the closing force of the grab bucket grabbing, is monitored in real time, and whether the current grabbing or lifting work of the grab bucket type dredger is in an overload working state is determined by comparing the obtained pressure with the rated pressure. When the obtained pressure is greater than the rated pressure, it means that the driving force provided by the winch winding the steel wire rope cannot meet the needs of the grabbing or lifting of the grab bucket, and the overload operation of the grabbing or lifting of the grab bucket cannot be completed, so it can be determined that the grab bucket type dredger is in an overload working state. At this time, the brake installed on the winch is closed, the brake brakes and locks the winch, the winding of the steel wire rope by the winch stops, and the length of the steel wire rope outside the winch cannot change. Then the overload working mechanism installed on the grab bucket type dredger is turned on, the overload working mechanism is elongated, the length of the steel wire rope wound on the overload working mechanism is increased, and the length of the steel wire rope between the overload working mechanism and the grab bucket is shortened due to the unchanged length of the steel wire rope outside the winch, so that the grabbing of the grab bucket can be closed or the grab bucket can be lifted, the overload grabbing or overload lifting of the grab bucket is completed, and the problem that the static hydraulic transmission system cannot perform overload work due to the low pressure tolerance value of the components is avoided. The overload working needs of the grab bucket type dredger in the grabbing and lifting process of the grab bucket can be met.

[0012] Optionally, while monitoring in real time whether the grab bucket meets the first overload working condition in the grabbing or lifting process, the grab bucket type dredger overload working method further comprises:

[0013] monitoring in real time whether the grab bucket meets a second overload working condition in the grabbing or lifting process, wherein the second overload working condition is that the length of the steel wire rope wound by the winch is equal to a preset length;

[0014] If yes, it is determined that the grabbing or lifting process of the grab bucket is completed.

[0015] After it is determined that the grabbing or lifting process of the grab bucket is completed, whether the first overload working condition is met or not met, it is determined that the normal working state.

[0016] Optionally, in the overload working state, the grab bucket type dredger overload working method further comprises:

[0017] When the grab bucket is completed lifting and needs to unload the grabbed object, the overloading working mechanism is driven to retract, releasing the steel wire rope;

[0018] The grab bucket is opened, completing the unloading of the grabbed object.

[0019] Optionally, when the overloading working mechanism is retracted, the grab bucket is not fully opened, and the grab bucket overloading working method further comprises:

[0020] The brake is opened, releasing the winch, driving the steel wire rope to reset, and driving the grab bucket to fully open.

[0021] Optionally, after completing the unloading of the grabbed object, before the grab bucket is lowered again, the grab bucket overloading working method further comprises:

[0022] When the overloading working mechanism is retracted, the grab bucket is fully opened, and the telescopic drive is driven to reset to the initial state;

[0023] The brake is opened, releasing the winch, driving the steel wire rope to reset, and lowering the grab bucket.

[0024] Optionally, in the overloading working state, the grab bucket overloading working method further comprises:

[0025] If the extension value of the overloading working mechanism is equal to the maximum stroke value, the grab bucket is not fully closed or not lifted to the specified position, and the overloading working state is released;

[0026] The overloading working mechanism is driven to reset, and the brake is opened;

[0027] The winch is released, and the steel wire rope is driven to reset.

[0028] Optionally, the overloading working mechanism comprises a telescopic drive, a fixed pulley and a movable pulley, the fixed pulley is installed at the rodless end of the telescopic drive, the movable pulley is installed at the rod end of the telescopic drive, the steel wire rope is wound out from the winch, sequentially wound around the fixed pulley and the movable pulley, and led out from the movable pulley and connected with the grab bucket.

[0029] Optionally, the number of the fixed pulleys and the movable pulleys is multiple, the multiple fixed pulleys are arranged in parallel and concentrically at the rodless end, and the movable pulleys are arranged in parallel and concentrically at the rod end.

[0030] In another aspect, the present application also provides a server comprising a memory and a processor; the memory is used to store a computer program; the processor is used to realize the grab bucket overloading working method as described above when the computer program is executed.

[0031] With respect to the prior art, the server of the present application has the same beneficial effects as the clamshell dredger overload working method as described above, which will not be repeated here.

[0032] In still another aspect, the present application also provides a storage medium, which has a computer program stored thereon, and when the computer program is executed by a processor, the clamshell dredger overload working method as described above is realized.

[0033] With respect to the prior art, the storage medium of the present application has the same beneficial effects as the clamshell dredger overload working method as described above, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 The flowchart of the clamshell dredger overload working method in the embodiments of the present application. DETAILED DESCRIPTION

[0035] In order to make the above object, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0037] It should be noted that the reason why the overload ratio that can be achieved by the winch of the existing clamshell dredger working through the conventional hydrostatic transmission mode is relatively low is mainly that the pressure resistance value of the components in the conventional hydrostatic transmission system is relatively low. Therefore, in order to ensure the stability of the components of the conventional hydrostatic transmission system, there is a limit value of the driving force output of the conventional hydrostatic transmission system when driving the clamshell, thereby causing the need to be unable to achieve the overload working of the clamshell dredger with a large ratio, for example, 4 times or more.

[0038] To solve the above problems, in one aspect, an embodiment of the present application provides a clamshell dredger overload working method, applied to a clamshell dredger provided with an overload working mechanism, a winch, a steel wire rope and a clamshell bucket, the overload working mechanism is used to stretch or retract to adjust the length of the steel wire rope wound on the overload working mechanism, the winch is provided with a brake, and the clamshell dredger overload working method comprises: monitoring in real time whether the clamshell bucket meets a first overload working condition during grabbing or lifting, wherein the first overload working condition is that the pressure of the steel wire rope wound on the winch is greater than the rated pressure; if yes, it is determined that the overload working state is met, the brake is closed, and the winch is stopped from winding the steel wire rope; the overload working mechanism is opened, the overload working mechanism is driven to stretch, the length of the steel wire rope wound on the overload working mechanism is increased, and the length of the steel wire rope between the overload working mechanism and the clamshell bucket is reduced; if no, it is determined that the normal working state is met.

[0039] In the embodiment, as shown in S1 to S4, Figure 1 For the clamshell dredger during grabbing or lifting, the pressure of the steel wire rope wound on the winch, i.e. the lifting force of the clamshell bucket during lifting or the closing force of the clamshell bucket during grabbing, is monitored in real time, and whether the grabbing or lifting work of the clamshell dredger is in the overload working state is determined by comparing the obtained pressure with the rated pressure. When the obtained pressure is greater than the rated pressure, it indicates that the driving force provided by the steel wire rope wound on the winch cannot meet the needs of the grabbing or lifting of the clamshell bucket, and the overload work of the grabbing or lifting of the clamshell bucket cannot be completed, so it can be determined that the clamshell dredger is in the overload working state. At this time, the brake installed on the winch is closed, the brake brakes and locks the winch, the winding of the steel wire rope by the winch is stopped, and the length of the steel wire rope outside the winch cannot be changed. Then the overload working mechanism installed on the clamshell dredger is opened, the overload working mechanism is stretched, the length of the steel wire rope wound on the overload working mechanism is increased, and the length of the steel wire rope between the overload working mechanism and the clamshell bucket is shortened, so that the grabbing of the clamshell bucket can be closed or the clamshell bucket can be lifted, and the overload grabbing or overload lifting of the clamshell bucket is completed. The clamshell dredger overload working method of the embodiment avoids the problem that the static hydraulic transmission system cannot work in overload due to the low pressure tolerance of the components, and can meet the needs of the clamshell dredger in overload during grabbing and lifting of the clamshell bucket.

[0040] It should be noted that in the embodiment, the overload working mechanism is a force-extending oil cylinder, the winch is driven to rotate by a hydraulic motor, thus the pressure oil can be supplied by a hydraulic pump of a hydrostatic transmission system for supplying pressure oil to the winch, the flow direction of the pressure oil output by the hydraulic pump is controlled by an electromagnetic reversing valve, the input of the hydraulic motor or the force-extending oil cylinder is realized, and the oil pressure output by the hydraulic pump is adjusted by an electric proportional overflow valve or an electric proportional constant pressure valve of the hydraulic pump, so that the driving force output by the force-extending oil cylinder can be achieved, and the purpose of grabbing or lifting different grabbed objects can be achieved, and the pressure oil flow of the force-extending oil cylinder can be adjusted by a proportional flow valve or a proportional displacement valve of the hydraulic pump, so as to adjust the action speed of the force-extending oil cylinder. Of course, in other embodiments of the application, a constant-displacement hydraulic pump or a constant-pressure variable-displacement hydraulic pump matched with a proportional flow valve can be used for flow control, a proportional displacement pump can be used to realize output flow control by changing the displacement, or the overload working mechanism can be set as a force-extending air cylinder, a compressor is used to provide compressed air for the force-extending air cylinder, the air pressure of the compressed air can be adjusted by an electric proportional constant pressure valve, and the flow of the force-extending air cylinder can be adjusted by a proportional flow valve.

[0041] It should be noted that in the application, the overload working mechanism can be installed on the arm of the grab bucket dredger, on the rack or in the machine room, and the rack can be an A-shaped rack.

[0042] It should be noted that in the embodiment, the pressure of the steel wire rope wound by the winch is monitored in real time by the sensor.

[0043] It should be noted that in the embodiment, the brake installed on the winch includes a conventional static brake of the hydrostatic transmission system of the winch and an overload static brake installed outside the winch, so as to realize the braking and locking of the winch.

[0044] It should be noted that in the embodiment, in order to avoid damage to the grab bucket and the steel wire rope, the value of the driving force output by the overload working mechanism has an extreme value, the driving force output by the overload working mechanism is less than or equal to the maximum tension value of the steel wire rope, and when the driving force realizes the closing of the grab bucket through the steel wire rope, the closing force given to the grab bucket is less than or equal to the maximum impact force that can be borne by the grab bucket teeth.

[0045] It should be noted that considering that the grabbing or lifting of the grab bucket of the grab bucket dredger is realized by winding corresponding steel wire ropes by different winches, in the embodiment, different overload working mechanisms are arranged to correspond to different steel wire ropes.

[0046] Optionally, while monitoring in real time whether the grab bucket meets the first overload working condition during the grabbing or lifting process, the grab bucket excavator overload working method further comprises: monitoring in real time whether the grab bucket meets a second overload working condition during the grabbing or lifting process, wherein the second overload working condition is that the length of the winch winding steel wire rope is equal to a preset length; if yes, it is determined that the grabbing or lifting process of the grab bucket is completed; after determining that the grabbing or lifting process of the grab bucket is completed, if the first overload working condition is met or not met, it is determined as a normal working state.

[0047] In the embodiment, as shown in Figure 1 the length of the winch winding steel wire rope is equal to a preset length, which is considering that when the length of the winch winding steel wire rope is equal to the preset length, the grab bucket is completely closed during grabbing or has reached a specified position during lifting, at this time, it is not necessary to consider whether the pressure of the winch winding steel wire rope is greater than the rated pressure, that is, the grabbing or lifting of the grab bucket has been completed in the normal working state of the grab bucket excavator, only when the length of the winch winding steel wire rope is not equal to the preset length and the pressure of the winch winding steel wire rope is greater than the rated pressure, it can be determined that the grab bucket excavator is in an overload working state, the winch needs to be stopped and locked, and the movement of the steel wire rope is completed through the overload working mechanism to complete the grabbing or lifting of the grab bucket in the overload working state.

[0048] It should be noted that when monitoring the length of the winch winding steel wire rope, the rotation direction and the number of rotations of the winch can be obtained through a sensor, so that the length of the winch winding steel wire rope is calculated through the rotation direction and the number of rotations of the winch to obtain the monitoring value of the winch winding steel wire rope.

[0049] Optionally, in the overload working state, the grab bucket excavator overload working method further comprises: when the grab bucket completes the lifting and needs to unload the grabbed object, the overload working mechanism is driven to contract to release the steel wire rope; the grab bucket is opened to complete the unloading of the grabbed object.

[0050] In the embodiment, in the overload working state, when the grab bucket of the grab bucket excavator has completed the lifting of the grabbed object and needs to unload the grabbed object, the overload working mechanism is driven to contract, the length of the steel wire rope wound on the overload working mechanism is reduced, the released length is transferred to the steel wire rope between the overload working mechanism and the grab bucket, the steel wire rope is released, the grab bucket is opened, and the unloading of the grabbed object is realized.

[0051] It should be noted that in the embodiment, the contraction of the force-adding telescopic oil cylinder as the overload working mechanism is realized by releasing the pressure oil in the rodless cavity of the force-adding telescopic oil cylinder.

[0052] Optionally, when the overload working mechanism is retracted, the grab bucket is not fully opened, and the grab bucket excavator overload working method further comprises: opening the brake to release the winch, driving the steel wire rope to reset, and driving the grab bucket to fully open.

[0053] In the embodiment, considering that the overload working state is usually performed when the grab bucket is not fully closed, after the overload working mechanism is retracted to release the steel wire rope, the grab bucket is not fully opened, so that the grabbed object cannot be completely unloaded. At this time, the brake on the winch can be opened to release the lock of the brake on the winch, the winch naturally rotates under the driving of the self-weight of the grab bucket, the steel wire rope is completely released, and the grab bucket can be driven to fully open.

[0054] It should be noted that, in the embodiment, when the overload working mechanism is retracted, the grab bucket is not fully opened, specifically, when the telescopic rod of the force-adding telescopic cylinder as the overload working mechanism reaches the minimum stroke, the length of the steel wire rope outside the winch still does not reach the length of the steel wire rope when the grab bucket is fully opened.

[0055] Optionally, after the unloading of the grabbed object is completed, before the grab bucket is lowered again, the grab bucket excavator overload working method further comprises: when the overload working mechanism is retracted, the grab bucket is fully opened, the telescopic driving part is driven to reset to the initial state; the brake is opened to release the winch, and the steel wire rope is driven to reset to make the grab bucket descend.

[0056] In the embodiment, after the unloading of the grabbed object by the grab bucket is completed, the grab bucket needs to be lowered again for reciprocating grabbing and lifting operation. At this time, when the grabbed object is unloaded, the overload working mechanism is in the retracted state, i.e., retracted to the minimum stroke, and the steel wire rope for controlling the closing and opening of the grab bucket has been completely released under the driving of the self-weight of the grab bucket, and the grab bucket is fully opened. At this time, the overload working mechanism can be driven to reset to the initial state to ensure that the grabbing control of the grab bucket is in the initial state, and for the descent of the grab bucket, the brake can be opened to release the winch, the steel wire rope is driven to reset under the driving of the self-weight of the grab bucket, so that the grab bucket can descend.

[0057] It should be noted that, in the embodiment, the grabbing and lifting of the grab bucket of the grab bucket excavator are controlled by different winches and steel wire ropes, so that the unloading of the grabbed object by the grab bucket and the descent of the grab bucket are controlled by different overload working mechanisms and different winches and steel wire ropes.

[0058] Optionally, in the overload working state, the grab bucket excavator overload working method further comprises: if the extension value of the overload working mechanism is equal to the maximum stroke value, the grab bucket is not fully closed or not lifted to the specified position, the overload working state is released; the overload working mechanism is driven to reset, and the brake is released; the winch is released, and the steel wire rope is driven to reset.

[0059] In this embodiment, under the overload working state of the grab bucket dredger, due to the different objects being grabbed or lifted, there may be situations where the grab bucket cannot be fully closed or cannot be lifted to the designated position even under the overload working state. When the extension value of the overload working mechanism reaches the maximum stroke value, the grab bucket is not fully closed or has not been lifted to the designated position. At this time, the overload working mechanism can no longer drive the wire rope between the overload working mechanism and the grab bucket to shorten, that is, it cannot drive the grab bucket to continue to close or lift. Therefore, the grab or lift operation cannot be completed, and it is necessary to release the overload working state, drive the overload working mechanism to reset, release the brake, release the winch, and drive the wire rope to reset under the self-weight drive of the grab bucket, thus canceling the grab or lift operation.

[0060] Optionally, the overload working mechanism includes a telescopic drive, a fixed pulley, and a movable pulley. The fixed pulley is installed at the rodless end of the telescopic drive, and the movable pulley is installed at the rod end of the telescopic drive. The wire rope is wound out by a winch, sequentially wound around the fixed pulley and the movable pulley, and led out by the movable pulley to connect with the grab bucket.

[0061] In this embodiment, in order to ensure that the wire rope wound on the overload working mechanism can move smoothly when it stretches or shortens, a telescopic drive, a fixed pulley, and a movable pulley are provided. The fixed pulley is installed on the rodless end of the telescopic drive to support the wire rope, and the movable pulley is installed on the rod end of the telescopic drive. As the wire rope wound on it moves, the wire rope is wound out by the winch, wound around the fixed pulley and the movable pulley in sequence, and is led out by the movable pulley to connect with the grab bucket.

[0062] It should be noted that, in this embodiment, the telescopic drive component is a force-applying telescopic cylinder.

[0063] Optionally, there are multiple fixed pulleys and multiple movable pulleys, with multiple fixed pulleys arranged concentrically in parallel at the rodless end and multiple movable pulleys arranged concentrically in parallel at the rod end.

[0064] In this embodiment, in order to enable the loading mechanism to drive a longer wire rope to achieve length changes, multiple fixed pulleys and multiple movable pulleys are provided. The multiple fixed pulleys are arranged concentrically in parallel, and the multiple movable pulleys are arranged concentrically in parallel, so that the wire rope wound on the fixed pulleys and movable pulleys is longer.

[0065] On the other hand, one embodiment of the present invention provides a server, including a memory and a processor; the memory is used to store a computer program; the processor is used to implement the above-described overload operation method of a grab bucket dredger when the computer program is executed.

[0066] like Figure 1 As shown in S1 to S4, the technical effect of the server in this embodiment is similar to that of the above-mentioned overload working method of the grab bucket dredger, and will not be repeated here.

[0067] In still another aspect, an embodiment of the present application provides a storage medium, and the storage medium has a computer program stored thereon, and the computer program, when executed by a processor, implements the overload working method of the grab dredger.

[0068] As Figure 1 The technical effects of the storage medium in the embodiment are similar to those of the overload working method of the grab dredger, and will not be described here again.

[0069] Although the present application is disclosed by the above, the protection scope of the present application is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and these changes and modifications will fall within the protection scope of the present application.

Claims

1. A method of overloading a grab dredge, characterized in that, The application is applied to a grab bucket excavator equipped with an overload working mechanism, a winch, a steel wire rope and a grab bucket, the overload working mechanism is used to stretch out or retract to adjust the length of the steel wire rope wound on the overload working mechanism, the winch is equipped with a brake, and the grab bucket excavator overload working method comprises the following steps. Real-time monitoring whether the grab bucket meets a first overload working condition during grabbing or lifting, wherein the first overload working condition is that the pressure of the winch winding the steel wire rope is greater than the rated pressure; If yes, determining that the overload working state is reached, closing the brake, and stopping the winch from winding the steel wire rope; Opening the overload working mechanism, driving the overload working mechanism to stretch out, increasing the length of the steel wire rope wound on the overload working mechanism, and reducing the length of the steel wire rope between the overload working mechanism and the grab bucket; In the overload working state, the grab bucket excavator overload working method further comprises the following steps. When the grab bucket finishes lifting and needs to unload the grabbed object, driving the overload working mechanism to retract, and releasing the steel wire rope; The grab bucket is opened, and the unloading of the grabbed object is completed; If no, determining that the normal working state is reached; Real-time monitoring whether the grab bucket meets a second overload working condition during grabbing or lifting, wherein the second overload working condition is that the length of the winch winding the steel wire rope is equal to a preset length; If yes, determining that the grabbing or lifting process of the grab bucket is completed; When it is determined that the grabbing or lifting process of the grab bucket is completed, the first overload working condition is met or not met, and both are determined as the normal working state.

2. The clamshell dredge overloading method of claim 1, wherein, When the overload working mechanism retracts, the grab bucket is not completely opened, and the grab bucket excavator overload working method further comprises the following steps. Opening the brake, releasing the winch, driving the steel wire rope to reset, and driving the grab bucket to completely open.

3. The clamshell dredge overloading method of claim 1, wherein, After the unloading of the grabbed object is completed, before the grab bucket is lowered again, the grab bucket excavator overload working method further comprises the following steps. When the overload working mechanism retracts, the grab bucket is completely opened, and the stretchable driving member is driven to reset to an initial state; Opening the brake, releasing the winch, and driving the steel wire rope to reset, so that the grab bucket is lowered.

4. The clamshell dredge overloading method of claim 1, wherein, In the overload working state, the grab bucket excavator overload working method further comprises the following steps. If the lengthening value of the overload working mechanism is equal to the maximum stroke value, the grab bucket is not completely closed or lifted to a specified position, the overload working state is released; Driving the overload working mechanism to reset, and releasing the closing of the brake; Releasing the winch, and driving the steel wire rope to reset.

5. The clamshell dredge overloading method of claim 4, wherein, The overload working mechanism comprises a stretchable driving member, a fixed pulley and a movable pulley, the fixed pulley is installed at the rodless end of the stretchable driving member, the movable pulley is installed at the rod end of the stretchable driving member, the steel wire rope is wound on the fixed pulley and the movable pulley in sequence from the winch, and is led out from the movable pulley and connected with the grab bucket.

6. The grab dredge overloading method according to claim 5, characterized in that, The number of the fixed pulleys and the movable pulleys is multiple, the multiple fixed pulleys are arranged in parallel and concentrically at the rodless end, and the movable pulleys are arranged in parallel and concentrically at the rod end.

7. A server, characterized by The application also discloses a computer readable storage medium, which comprises a computer program.

8. A storage medium, characterized by The application also discloses a computer readable storage medium, which comprises a computer program.

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