Large folding arm crane dragging structure for ship

Abstract

The utility model discloses a large-scale folding arm crane dragging structure for a ship, and relates to the technical field of folding arm cranes, a support column is fixedly connected above a fixed seat, a hydraulic lifting upright column is fixedly connected above the support column, a lifting arm is arranged on one side of the top end of the hydraulic lifting upright column, one side of the lifting arm is connected with a folding arm in a matching manner, and the folding arm is connected with a hydraulic cylinder. A rectangular groove is formed in one end of the folding arm, a cylinder is fixed in the rectangular groove, a rotating wheel is installed on the cylinder in a matched mode, a steel wire rope is installed on the rotating wheel in a matched mode, a lifting hook fixing box is arranged at the lower end of the steel wire rope, and a lifting hook is installed at the lower end of the lifting hook fixing box in a matched mode. According to the utility model, the large-scale folding arm crane can safely and stably load and unload goods and the like under the condition of sea stormy waves, so that the reliability and the safety of operation of a ship under severe sea conditions are improved, and the probability of operation interruption or accidents caused by sea condition factors is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a large -scale folding arm crane dragging structure for ship, and specifically relates to a large -scale folding arm crane dragging structure for ship. BACKGROUND

[0002] In the field of ship transportation and offshore operation, loading and unloading and carrying of goods are crucial operation links, and with the continuous increase of ship tonnage and the increasing complexity of offshore engineering, higher requirements are put forward for the lifting capacity, operation flexibility and working efficiency of the lifting equipment on the ship; as the commonly used lifting equipment on the ship, the large -scale folding arm crane plays a key role in many aspects such as loading and unloading of goods on the ship, offshore platform supply, ship building and maintenance.

[0003] The utility model discloses a kind of ship folding arm cranes provided in Chinese patent announcement No.CN104843591A, the crane includes base, stand and telescopic boom controlled by first oil cylinder, telescopic boom lower end is equipped with lifting winch, telescopic boom extension end is provided with the metal shell of containment electromagnet, metal shell is equipped with the toggle switch electrically connected with electromagnet, toggle switch handle extends metal shell, switch oil cylinder is connected between the wall of telescopic boom and switch handle outer side;The inner arm of being controlled by third oil cylinder is hinged between the top of stand and telescopic boom, second oil cylinder for folding telescopic boom is arranged on the inner arm, and the two ends of second oil cylinder are respectively hinged to the two ends of inner arm, and the bottom of stand is connected with base through a rotary support.

[0004] The folding arm crane in the above patent has certain limitations when hoisting on the sea, and the ship will constantly sway and tilt in the sea wave environment; if the height of hydraulic lifting column cannot be dynamically adjusted, the gravity center position of the whole folding arm crane is difficult to adapt to the change of ship posture, which reduces the working efficiency of the whole hoisting operation and increases the probability of accidents during hoisting operation. SUMMARY

[0005] The utility model discloses a large -scale folding arm crane dragging structure for ship, in the hoisting operation process, when encountering storm, the gravity center and stress state of the whole structure can be dynamically adjusted by adjusting the height of hydraulic lifting column, the angle of boom and other ways, ensure that under the condition of sea storm, large -scale folding arm crane can safely, stably and continuously carry out the operation task such as goods loading and unloading, greatly improve the reliability and safety of ship operation in bad sea conditions, reduce the probability of operation interruption or accident caused by sea condition factors.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The utility model provides a large -scale folding arm of a ship is dragged and removes structure, including fixed seat, the fixed seat top fixedly connected with support column, the support column top fixedly connected with hydraulic lifting column, the hydraulic lifting column top one side is equipped with lifting arm, and lifting arm one side cooperation and connection has folding arm, the folding arm one end is equipped with rectangular groove, and the rectangular groove is equipped with cylinder, and the cylinder cooperation and installation has runner, the runner cooperation and installation has wire rope, and the wire rope lower extreme is equipped with lifting hook fixed box, lifting hook fixed box lower extreme cooperation and installation has lifting hook.

[0008] As a further technical scheme of the utility model, the support column is internally fixedly connected with a servo motor at the top, and the output shaft of the servo motor is fixedly connected with the bottom end of the hydraulic lifting column.

[0009] As a further technical scheme of the utility model, the hydraulic lifting column is internally fixedly connected with a servo motor at the top, and the output shaft of the servo motor is fixedly connected with the bottom end of the hydraulic lifting column.

[0010] As a further technical scheme of the utility model, the hydraulic lifting column is internally fixedly connected with a servo motor at the top, and the output shaft of the servo motor is fixedly connected with the bottom end of the hydraulic lifting column.

[0011] As a further technical scheme of the utility model, the hydraulic lifting column is internally fixedly connected with a servo motor at the top, and the output shaft of the servo motor is fixedly connected with the bottom end of the hydraulic lifting column.

[0012] As a further technical scheme of the utility model, the hydraulic lifting column is internally fixedly connected with a servo motor at the top, and the output shaft of the servo motor is fixedly connected with the bottom end of the hydraulic lifting column.

[0013] As a further technical scheme of the utility model, the hydraulic lifting column is internally fixedly connected with a servo motor at the top, and the output shaft of the servo motor is fixedly connected with the bottom end of the hydraulic lifting column.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The utility model discloses, in the operation process, even if the folding arm crane is in different working posture and load state, the hydraulic lifting stand can still be flexibly adjusted according to actual conditions self height, when hoisting heavy goods and the boom stretching range is bigger, through the proper reduction hydraulic lifting stand height, can dynamically compensate the gravity center deviation caused by load and boom stretching, maintains the overall gravity center of ship in a relatively reasonable stable range, ensures that under the sea wind and wave condition, large -scale folding arm crane can safely, stably and continuously carry out cargo handling etc. Operation task, greatly improve the reliability and safety of ship operation in the bad sea condition, reduce the probability that the operation is interrupted or the accident occurs because of the sea condition factor, and it has irreplaceable important significance to the guarantee of the smooth progress of the sea transportation and operation.

[0016] The utility model discloses, when the sea wind and wave are bigger and stop operation, the hydraulic lifting stand can contract the overall folding arm crane to the lower position, compared with the traditional higher and fixed boom structure, its gravity center is reduced obviously, and the lower gravity center makes the overall gravity center of ship also reduce, and when the ship after reducing the gravity center encounters the sea wave impact and strong wind, the swing range that produces will obviously reduce to enhance the stability of ship in the wind and wave.

[0017] The utility model discloses the design of folding arm and its movable connection with lifting arm, cooperate rotatable lifting hook, greatly increase the working range of crane, whether in horizontal direction or vertical direction, can cover greater area, reduce the situation that needs to move the ship frequently because of the limited working range of crane, improve the overall operation efficiency, especially suitable for the ship loading and unloading operation of busy port or the material transfer between the sea multiple platforms. ACCURACY OF DRAWINGS

[0018] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0019] Figure 2 It is the front view of the utility model Figure 1 .

[0020] Figure 3 It is the plan view of the utility model Figure 1 .

[0021] Figure 4 It is the left view of the utility model Figure 1 .

[0022] Figure 5 It is another perspective three-dimensional structure schematic diagram of the utility model Figure 1 .

[0023] Figure 6 It is the bottom perspective three-dimensional structure schematic diagram of the utility model Figure 1 .

[0024] In the figure: 1 - fixed seat, 2 - support column, 3 - hydraulic lifting column, 4 - ladder, 5 - operation room, 6 - lifting arm, 7 - first hydraulic rod, 8 - second hydraulic rod, 9 - folding arm, 10 - steel wire rope, 11 - hook fixing box, 12 - hook. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Please refer to Figures 1-6 In the embodiments of the utility model, a fixed seat 1 is provided, a support column 2 is fixedly connected above the fixed seat 1, a hydraulic lifting column 3 is fixedly connected above the support column 2, a lifting arm 6 is arranged at one side of the top end of the hydraulic lifting column 3, a folding arm 9 is connected in cooperation with one side of the lifting arm 6, a rectangular groove is formed in one end of the folding arm 9, a cylinder is fixed in the rectangular groove, a runner is installed in cooperation with the cylinder, a steel wire rope 10 is installed in cooperation with the runner, a hook fixing box 11 is arranged at the lower end of the steel wire rope 10, and a hook 12 is installed in cooperation with the lower end of the hook fixing box 11.

[0027] By adopting the above technical solution, the fixed seat 1 as the root of the whole folding arm crane is closely connected with the deck of the ship, can uniformly disperse and transmit various loads generated during the operation of the crane to the structure of the ship, and provides a solid starting point for the stable operation of subsequent components; during the lifting operation, the cooperative connection design between the hydraulic lifting column 3, the lifting arm 6 and the folding arm 9 enables the components to collaboratively bear the tension, pressure and torque during the lifting of heavy objects, improves the load-carrying capacity and structural reliability of the whole lifting arm system; even if the folding arm crane is in different working postures and load states, the hydraulic lifting column 3 can still flexibly adjust its height according to the actual situation, when heavy goods are lifted and the extension range of the lifting arm is large, by appropriately reducing the height of the hydraulic lifting column 3, the center of gravity shift caused by the load and the extension of the lifting arm can be dynamically compensated, the overall center of gravity of the ship is maintained within a relatively reasonable and stable range, and it is ensured that the large folding arm crane can safely, stably and continuously perform the cargo loading and unloading operation under the sea wave condition, greatly improves the reliability and safety of the ship operation under the bad sea condition, reduces the probability of operation interruption or accident caused by the sea condition factor, and has irreplaceable important significance for ensuring the smooth performance of the sea transportation and operation.

[0028] In the embodiment, the support column 2 is internally and upwardly fixedly connected with a servo motor, and the output shaft of the servo motor is in matching connection with the bottom end of the hydraulic lifting column 3.

[0029] By adopting the above technical scheme, the cooperation of the servo motor and the controller has high-precision control characteristics. After the cooperation of the servo motor and the controller with the bottom end of the hydraulic lifting column 3, the operator can accurately control the rotation angle of the servo motor through the corresponding control system, and then accurately adjust the rotation angle of the hydraulic lifting column 3. This makes the folding arm crane be able to flexibly and accurately position the lifting hook to the target position according to different loading and unloading position requirements, surrounding environment and the state of the ship itself (such as the docking angle, relative position with other ships or wharf, etc.) when the folding arm crane is working on the ship.

[0030] In the embodiment, the hydraulic lifting column 3 is provided with a rectangular groove in the upper portion, a cylindrical body is installed in matching connection above the rectangular groove, and the cylindrical body is in matching rotary connection with one side of the lifting arm 6. A first hydraulic rod 7 is arranged below the rectangular groove and is fixedly connected with the hydraulic lifting column 3 through a fixed shaft. One end of the cylinder head of the first hydraulic rod 7 is fixedly connected with the bottom end of the lifting arm 6.

[0031] By adopting the above technical scheme, the first hydraulic rod 7 is arranged to realize accurate control of the height of the lifting arm 6. The hydraulic system can accurately adjust the extension length of the first hydraulic rod 7 according to different operation requirements. For example, when hoisting different height cargos, whether the cargo is hoisted from the deck of the ship to a higher hatch or hoisted from a lower storage area to the deck, the operator can control the flow and pressure of the hydraulic oil to accurately extend or shorten the first hydraulic rod 7, so as to lift or lower the lifting arm 6 to the appropriate height, so as to ensure that the lifting hook can accurately reach the position of the cargo, thereby greatly improving the accuracy and efficiency of cargo loading and unloading.

[0032] In the embodiment, the hydraulic lifting column 3 is provided with an operation room 5 on the side perpendicular to the lifting arm 6 and is fixedly connected with the hydraulic lifting column 3.

[0033] By adopting the above technical scheme, the operation room 5 is fixedly connected with the hydraulic lifting column 3, so that the hydraulic lifting column 3 is lowered and the operation room 5 is also lowered at the same time, thereby creating a relatively independent and stable working space for the operator. When hoisting in the case of wind and wave, the operation room 5 can effectively reduce the interference of external sea waves, sea wind howling and ship self-shaking and other factors on the operator, so that the operator can focus on the control of the folding arm crane in a relatively stable environment, thereby more accurately executing various hoisting, moving and placing instructions of the cargo.

[0034] In the embodiment, the hydraulic lifting column 3 is provided with a ladder 4 on one side of the lifting arm 6, the upper end of the ladder 4 is fixedly connected with the hydraulic lifting column 3, the lower end is in a suspended state, and a protective guardrail is fixedly connected to the ladder 4.

[0035] By adopting the above technical scheme, the ladder 4 provides a channel for maintenance personnel to directly reach the hydraulic lifting column 3 and other key parts of the folding arm crane. In daily maintenance work, such as checking the pipeline connection of the hydraulic system, the oil cylinder sealing condition, or performing patrol and maintenance on the line of the electrical control system, the maintenance personnel can easily climb to the corresponding height position by means of the ladder 4, without the need for additional climbing equipment or complex operations such as erecting a scaffold, thereby improving the convenience and efficiency of the maintenance work. The protective guardrail effectively ensures the safety of the workers when climbing the ladder 4.

[0036] In the embodiment, the lifting arm 6 is fixedly connected with a second hydraulic rod 8 at the top, one end of the cylinder head of the second hydraulic rod 8 is fixedly connected to a support of the folding arm 9, an inner side of one end of the lifting arm 6 is fixedly connected with a shaft pin, the shaft pin is cooperatively installed with the folding arm 9, and the lifting arm 6 is movably connected with the folding arm 9.

[0037] By adopting the above technical scheme, the second hydraulic rod 8 is connected between the top of the lifting arm 6 and the support of the folding arm 9, so that the folding arm 9 can be flexibly adjusted in angle relative to the lifting arm 6. The operator can accurately change the inclination angle of the folding arm 9 by controlling the extension and retraction of the second hydraulic rod 8 according to the actual hoisting operation requirements. By adjusting the second hydraulic rod 8 to swing the folding arm 9 to a suitable angle, the hook can accurately reach the target position, thereby greatly improving the accuracy and flexibility of cargo hoisting in different space environments and adapting to various complex operation scenarios.

[0038] In the embodiment, a hole is formed in the bottom of the hook fixing box 11, and a hook 12 is arranged in the hole. An upper end of the hook 12 is provided with a fixed shaft, the top of the fixed shaft has a diameter larger than that of the hole, and the fixed shaft is rotatably connected with the hook fixing box 11.

[0039] By adopting the above technical scheme, the rotatable connection between the hook 12 and the hook fixing box 11 endows the hook 12 with the ability to freely rotate within a certain range, which better adapts to complex operation scenarios such as hoisting cargo in a narrow hatch or transferring cargo from a ship to a sea platform in actual hoisting operations. The hook 12 can adjust its angle by rotation according to specific hoisting space limitations and cargo placement requirements, which facilitates accurate placement and smooth lifting of the cargo, reduces operation difficulties caused by limited angle of the hook 12, and helps to improve the operation efficiency of the folding arm crane.

[0040] The working principle of the utility model is: the fixed seat 1 is the root of the whole folding arm crane, and is closely connected with the ship deck, can evenly disperse and transmit various loads generated during the crane operation to the ship structure, and provides a solid starting point for stable operation of subsequent parts; during hoisting operation, the cooperation and connection design between the hydraulic lifting column 3, the lifting arm 6 and the folding arm 9 enables the parts to cooperatively bear the tension, pressure and torque during lifting of heavy objects, improves the load bearing capacity and structural reliability of the whole lifting arm system; even if the folding arm crane is in different working postures and load states, the hydraulic lifting column 3 can still flexibly adjust its height according to the actual situation, when heavy goods are lifted and the lifting arm stretching range is large, by appropriately reducing the height of the hydraulic lifting column 3, the gravity center deviation caused by load and lifting arm stretching can be dynamically compensated, the overall gravity center of the ship is maintained within a relatively reasonable and stable range, ensuring that the large folding arm crane can safely, stably and continuously carry out cargo loading and unloading and other operation tasks under sea wave conditions, greatly improving the reliability and safety of ship operation in bad sea conditions, reducing the probability of operation interruption or accidents caused by sea condition factors, and having irreplaceable important significance for ensuring the smooth progress of sea transportation and operation.

[0041] The setting of the first hydraulic rod 7 realizes accurate control of the height of the lifting arm 6, and the hydraulic system can accurately adjust the extension length of the first hydraulic rod 7 according to different operation requirements, for example, when lifting goods of different heights, whether lifting from the ship deck to a higher hatch or from a lower storage area to the deck, the operator can control the flow and pressure of hydraulic oil to accurately extend or shorten the first hydraulic rod 7, so as to lift or lower the lifting arm 6 to the appropriate height, ensure that the lifting hook can accurately reach the position of the goods, and greatly improve the accuracy and efficiency of cargo loading and unloading.

[0042] The second hydraulic rod 8 is connected between the top of the lifting arm 6 and the support of the folding arm 9, so that the folding arm 9 can be flexibly adjusted in angle relative to the lifting arm 6. The operator can accurately change the inclination angle of the folding arm 9 by controlling the extension of the second hydraulic rod 8 according to the actual lifting operation requirements; by adjusting the second hydraulic rod 8 to swing the folding arm 9 to the appropriate angle, the lifting hook can accurately reach the target position, greatly improving the accuracy and flexibility of goods lifting in different space environments, and being suitable for various complex operation scenes.

[0043] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0044] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.

Claims

1. A large folding boom crane tractor structure for a ship, characterized by: Including fixed seat (1), fixed seat (1) top fixedly connected with support column (2), support column (2) top fixedly connected with hydraulic lifting column (3), the top of hydraulic lifting column (3) one side is equipped with lifting arm (6), lifting arm (6) one side is connected with folding arm (9) in coordination, the one end of folding arm (9) is equipped with rectangular slot, and the cylinder is fixed in rectangular slot, and the runner is installed on the cylinder in coordination, the steel wire rope (10) is installed on the runner in coordination, the lower end of steel wire rope (10) is equipped with lifting hook fixed box (11), the lower end of lifting hook fixed box (11) is equipped with lifting hook (12) in coordination.

2. A large knuckle boom crane tractor structure for a marine vessel as claimed in claim 1, characterised in that: The support column (2) is fixedly connected with a servo motor inside the top, and the output shaft of the servo motor is connected with the bottom of the hydraulic lifting column (3).

3. The large knuckle boom crane tractor structure for a marine vessel of claim 1, wherein: The hydraulic lifting column (3) is provided with a rectangular slot on the top, and a cylindrical body is installed on the top of the rectangular slot, and the cylindrical body is rotatably connected with one side of the lifting arm (6); the first hydraulic rod (7) is arranged below the rectangular slot and is fixedly connected with the hydraulic lifting column (3) through a fixed shaft, and one end of the cylinder head of the first hydraulic rod (7) is fixedly connected with the bottom of the lifting arm (6).

4. The large knuckle boom crane tractor- trailer structure for marine use according to claim 1, characterized in that: The hydraulic lifting column (3) is provided with an operating chamber (5) on the side perpendicular to the lifting arm (6) and is fixedly connected with the hydraulic lifting column (3).

5. The large knuckle boom crane tractor structure for a marine vessel of claim 1, wherein: The hydraulic lifting column (3) is provided with a ladder (4) on the side relative to the lifting arm (6), the upper end of the ladder (4) is fixedly connected with the hydraulic lifting column (3), the lower end is in a suspended state, and a protective rail is fixedly connected on the ladder (4).

6. The large knuckle boom crane tractor- trailer structure for marine use according to claim 1, wherein: The second hydraulic rod (8) is fixedly connected to the top of the lifting arm (6), and the cylinder head of the second hydraulic rod (8) is fixedly connected to the support of the folding arm (9); the shaft pin is fixedly connected to the inner side of the lifting arm (6), and the shaft pin is installed in cooperation with the folding arm (9), and the lifting arm (6) is movably connected with the folding arm (9).

7. The large knuckle boom crane tractor structure for a marine vessel of claim 1, wherein: The hole is formed in the bottom of the lifting hook fixed box (11), and the lifting hook (12) is arranged in the hole, the fixed shaft is arranged on the upper end of the lifting hook (12), the diameter of the top of the fixed shaft is greater than the diameter of the hole, and the fixed shaft is rotatably connected with the lifting hook fixed box (11).

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