A wharf hose specialist boom

By introducing a rack and pinion extension assembly and a balancing assembly into the flexible boom, the problem of boom deformation caused by excessive torque was solved, resulting in a larger working radius and improved boom stability.

CN224377517UActive Publication Date: 2026-06-19MAOMING PORT CHANGXING PETROCHEMICAL TERMINAL CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
MAOMING PORT CHANGXING PETROCHEMICAL TERMINAL CO LTD
Filing Date
2025-04-07
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

When lifting heavy objects, the existing flexible boom may deform or break due to excessive torque, especially when the second boom extends more than halfway.

Method used

A specialized boom for dock hoses was designed. By setting an extension component with gear and rack meshing between the first and second booms, along with a balancing component and a limiting structure, the boom length and center of gravity can be adjusted to prevent deformation caused by excessive torque.

Benefits of technology

It significantly increases the crane's operating radius, enabling it to cover a larger working area, and counteracts overturning moments through balancing components, preventing the crane from tipping over and improving the stability and safety of the boom.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

This utility model provides a professional boom for dock hoses, including a base, a steering structure rotatably connected to the base, a support column fixedly connected inside the steering structure, a first reinforcing connector fixedly connected to the outside of the support column, a first boom fixedly connected to the first reinforcing connector, the other end of the support arm fixedly connected to the upper surface of the first boom, a boom sleeve installed on the outer rear end of the first boom, a second boom slidably connected to the outer front end of the first boom, an extension component provided between the first and second booms, and a balancing component provided on the upper surface of the boom sleeve. This utility model, by setting a second boom at the front end of the first boom, and by incorporating gears and racks within both booms, extends the boom length, significantly increasing the crane's operating radius and enabling it to cover a larger working area. The length can be adjusted according to specific task requirements to adapt to different operating environments and lifting requirements.
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Description

Technical Field

[0001] This utility model relates to the field of flexible hose boom technology, specifically a dock flexible hose boom. Background Technology

[0002] A flexible hose boom is used in docks, oil depots, and other similar locations. Through the extension, retraction, and rotation of the boom, it connects a hose to a ship and dock storage tanks, enabling the safe and efficient transport of liquids. Its flexible design allows it to adapt to different ship and dock conditions, and it is equipped with safety devices to prevent leaks and accidents, making it a key piece of equipment for handling liquid cargo in ports.

[0003] A search revealed that application number CN202223435158.0 discloses a tower crane boom, comprising a first boom, with a mounting plate fixedly connected to one end face of the first boom. A telescopic cavity is provided inside the first boom, and a second servo motor is located at one corner of the front end face of the first boom. The output end of the second servo motor extends into the telescopic cavity and is fixedly connected to a gear. Sliding grooves are provided on both sides of the upper end of the telescopic cavity. In this boom, a second boom is slidably connected inside the first boom. The second servo motor is located on one side of the first boom, and the output end of the second servo motor is fixedly connected to a gear. The gear meshes with a rack at the upper end of the second boom. By rotating the gear driven by the second servo motor, the sliding of the second boom within the first boom can be controlled, thereby changing the length of the boom, reducing the working radius, and mitigating the limitations of tower crane operation.

[0004] However, when the above equipment is in use, the first lifting arm and the second lifting arm are connected through a telescopic cavity. The second lifting arm can extend to the top of the telescopic cavity. However, when the second lifting arm extends forward more than halfway, the torque generated by the load will increase significantly. The lifting arm and the support structure may not be able to withstand the excessive torque, resulting in deformation or even breakage. Utility Model Content

[0005] The purpose of this utility model is to provide a professional dock hose crane to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A specialized dock hose crane includes:

[0008] A base is rotatably connected to a steering structure. A support column is fixedly connected inside the steering structure. A first reinforcing connector and a second reinforcing connector are fixedly connected to the outside of the support column. A support arm is fixedly connected to the second reinforcing connector. A first boom is fixedly connected to the first reinforcing connector. The other end of the support arm is fixedly connected to the upper end face of the first boom. A boom sleeve is installed on the outer rear end of the first boom. A second boom is slidably connected to the outer front end of the first boom. An extension component is provided between the first boom and the second boom. A balancing component is provided on the upper end face of the boom sleeve.

[0009] Preferably, the extension assembly includes a rack, which is fixedly connected to the lower end face of the first boom, the rack meshes with a gear, the gear is rotatably connected to a shaft, and the shaft is rotatably connected to the bottom of the second boom.

[0010] Preferably, the rotating shaft passes through the inner wall of the second boom and is rotatably connected to the second drive box fixedly connected to the outer side of the second boom. A second counterweight box is also fixedly connected to the outer side of the second boom, and the second boom and the second counterweight box are symmetrically arranged.

[0011] Preferably, a second limiting plate is provided at the middle and top of the first boom, and a guide rod is fixedly connected between the second limiting plates, with the first limiting plate fixedly connected in the middle of the guide rod.

[0012] Preferably, an extension block is slidably connected to the guide rod between the first limiting plate and the second limiting plate. The extension block has a guide hole and is slidably connected to the guide rod. The extension block is fixedly connected to the inner side of the second boom.

[0013] Preferably, the balancing component includes a counterweight block, which is slidably connected in a groove on the upper end face of the boom sleeve. One end of the groove is fixedly connected to a limiting block, and the other end is fixedly connected to a traction motor.

[0014] Preferably, the output end of the traction motor is rotatably connected to a lead screw, which passes through the counterweight and is rotatably connected to the limit block.

[0015] Preferably, a connecting plate is provided on the lower end face of the boom sleeve, and a roller is rotatably connected between the connecting plates. A first drive box is fixedly connected to the outside of the connecting plate, and a first counterweight box is also fixedly connected to the outside of the connecting plate. The first counterweight box and the first drive box are symmetrically arranged.

[0016] Preferably, a pull cable is provided on the roller, the pull cable passes through a fixing ring provided on the lower end face of the boom jacket and the lower end face of the second boom, and a hook is fixedly connected to the top end of the pull cable.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention provides a second boom at the front end of the first boom, and gears and racks are installed in the first and second booms to extend the boom length, significantly increasing the crane's working radius and enabling it to cover a larger working area. The length can be adjusted according to specific task requirements to adapt to different working environments and lifting requirements.

[0019] This invention relates to a balancing component installed on the outer sleeve of the boom. The balancing component has a counterweight block that slides in a groove. The traction motor controls the lead screw to adjust the position of the counterweight block in conjunction with the second boom, thereby adjusting the center of gravity of the boom. When the second boom extends forward, the counterweight block generates a counterbalancing torque in the opposite direction, which counteracts the outward overturning torque generated by the heavy object and prevents the crane from overturning. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a three-dimensional schematic diagram of the overall structure of this utility model from another perspective;

[0022] Figure 3 This is a schematic diagram of the extension of the second boom of this utility model;

[0023] Figure 4 This is a three-dimensional schematic diagram of the balancing component of this utility model;

[0024] Figure 5 This is a three-dimensional schematic diagram of the second boom and the first boom of this utility model;

[0025] Figure 6 This is a three-dimensional schematic diagram of the first boom of this utility model;

[0026] Figure 7 This is a three-dimensional schematic diagram of the connection between the first boom and the second boom of this utility model.

[0027] In the diagram: 1-Base; 2-Steering structure; 3-Support column; 4-First reinforcing connector; 5-Second reinforcing connector; 6-Support arm; 7-First boom; 701-First limiting plate; 702-Second limiting plate; 703-Guide rod; 704-Rack; 8-Boom outer sleeve; 9-Balance counterweight; 901-Traction motor; 902-Limiting block; 903-Screw rod; 904-Slide groove; 10-First drive box; 11-First counterweight box; 12-Second boom; 1201-Rotating shaft; 1202-Gear; 1203-Extension block; 1204-Guide hole; 13-Second drive box; 14-Second counterweight box; 15-Roller; 1501-Connecting plate; 16-Pull cable; 17-Hook; 18-Fixing ring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example:

[0030] Please see Figures 1 to 7 This utility model provides a technical solution:

[0031] A specialized dock hose crane includes:

[0032] A base 1 is rotatably connected to a steering structure 2. A support column 3 is fixedly connected inside the steering structure 2. A first reinforcing connector 4 and a second reinforcing connector 5 are fixedly connected to the outside of the support column 3. A support arm 6 is fixedly connected to the second reinforcing connector 5. A first boom 7 is fixedly connected to the first reinforcing connector 4. The other end of the support arm 6 is fixedly connected to the upper end face of the first boom 7. A boom sleeve 8 is installed on the outer rear end of the first boom 7. A second boom 12 is slidably connected to the outer front end of the first boom 7. An extension component is provided between the first boom 7 and the second boom 12. A balancing component is provided on the upper end face of the boom sleeve 8.

[0033] In this embodiment, the first boom 7 is connected to the support column 3 via the first reinforcing connector 4. The front outer side of the first boom 7 has a second boom 12, and the rear outer side has a boom sleeve 8. The second boom 12 is provided with a second drive box 13 and a second counterweight box 14 on both sides. The second drive box 13 contains a drive motor, and the output end of the drive motor is rotatably connected to a rotating shaft 1201. The rotating shaft 1201 passes through the bottom of the second boom 12 and is rotatably connected to the other side of the second boom 12. Gears 1202 are coaxially arranged on both sides of the rotating shaft 1201. When the rotating shaft 1201 rotates, the gears 1202 on both sides rotate synchronously. The gears 1202 mesh with the rack 704. The rack 704 is fixedly connected to the lower end face of the first boom 7. Since the first boom 7 is connected inside the second boom 12 and is fixedly connected to the support column 3, the rotation of the rotating shaft 1201 drives the gears 1202 to rotate. The gears 1202 move forward along the rack 704, thereby driving the second boom 12 to extend forward.

[0034] In this embodiment, second limiting plates 702 are provided at the middle and top of the first boom 7, and a guide rod 703 is fixedly connected between the second limiting plates 702. A first limiting plate 701 is provided at the middle of the guide rod 703. Extension blocks 1203 are provided on both sides of the inner wall of the second boom 12. A guide hole 1204 passes through the interior of the extension block 1203. The extension block 1203 is slidably connected to the guide rod 703 between the middle second limiting plate 702 and the first limiting plate 701 through the guide hole 1204. When the second boom 12 extends to the front end through the rack 704 and the gear 1202, the guide rod 703 guides the extension direction of the second boom 12. The extension block 1203 is connected to the guide rod 703, which provides more support for the second boom 12 and increases the rated lifting capacity of the second boom 12. The extension block 1203 is connected to the guide rod 703 between the middle second limiting plate 702 and the first limiting plate 701. When the second boom 12 extends forward, the extension block 1203 on the inner side of the second boom 12 is limited between the first limiting plate 701 and the second limiting plate 702. When the extension block 1203 touches the first limiting plate 701, the second boom 12 stops extending to prevent the boom from being too long and the boom and support structure from being unable to withstand excessive torque, resulting in deformation or even breakage.

[0035] Specifically, the extension assembly includes a rack 704, which is fixedly connected to the lower end face of the first boom 7. The rack 704 meshes with a gear 1202, which is rotatably connected to a rotating shaft 1201. The rotating shaft 1201 is rotatably connected to the bottom of the second boom 12.

[0036] Specifically, the rotating shaft 1201 passes through the inner wall of the second boom 12 and is rotatably connected to the second drive box 13 fixedly connected to the outer side of the second boom 12. The second counterweight box 14 is also fixedly connected to the outer side of the second boom 12. The second boom 12 and the second counterweight box 14 are symmetrically arranged. The second counterweight box 14 has a counterweight block inside to balance the weight of the second drive box 13 and maintain the balance of the boom.

[0037] Specifically, a second limiting plate 702 is provided at the middle and top of the first boom 7, and a guide rod 703 is fixedly connected between the second limiting plates 702. The first limiting plate 701 is fixedly connected in the middle of the guide rod 703.

[0038] Specifically, an extension block 1203 is slidably connected to the guide rod 703 between the first limiting plate 701 and the second limiting plate 702. The extension block 1203 has a guide hole 1204 and is slidably connected to the guide rod 703. The extension block 1203 is fixedly connected to the inner side of the second boom 12.

[0039] In this embodiment, a sliding groove 904 is provided on the outer sleeve 8 of the boom. A counterweight 9 is slidably connected in the sliding groove 904. A traction motor 901 and a limiting block 902 are fixedly connected to both sides of the sliding groove 904, respectively. The output end of the traction motor 901 is rotatably connected to a lead screw 903, which passes through the counterweight 9. The counterweight is threadedly connected to the lead screw 903. When the lead screw 903 rotates, since the position of the lead screw 903 is fixed between the traction motor 901 and the limiting block 902, the counterweight is driven by the lead screw 903 to slide in the sliding groove 904, thereby changing the position of the counterweight and adjusting the center of gravity of the boom. When the second boom 12 extends forward, the counterweight 9 generates a reverse balancing torque to counteract the outward overturning torque generated by the heavy object and prevent the crane from overturning.

[0040] Specifically, the balancing component includes a counterweight 9, which is slidably connected in a groove 904 on the upper end face of the boom sleeve 8. One end of the groove 904 is fixedly connected to a limiting block 902, and the other end is fixedly connected to a traction motor 901.

[0041] Specifically, the output end of the traction motor 901 is rotatably connected to a lead screw 903, which passes through the counterweight 9 and is rotatably connected to the limit block 902.

[0042] In this embodiment, a winding roller 15 is installed under the outer sleeve 8 of the boom. The winding roller 15 is used to wind up the cable 16. At the same time, the cable 16 is supported and guided by the fixing ring 18 so that the hook 17 is located at the top of the second boom 12. When the second boom 12 extends forward, the cable 16 extends forward with the second boom 12. The first drive box 10 can control the rotation of the winding roller 15 to wind up and unwind the cable 16, thereby controlling the height of the hook 17.

[0043] Specifically, a connecting plate 1501 is provided on the lower end face of the boom sleeve 8, and a roller 15 is rotatably connected between the connecting plates 1501. A first drive box 10 is fixedly connected to the outside of the connecting plate 1501, and a first counterweight box 11 is also fixedly connected to the outside of the connecting plate 1501. The first counterweight box 11 and the first drive box 10 are symmetrically arranged.

[0044] Specifically, a pull cable 16 is provided on the roller 15. The pull cable 16 passes through the lower end face of the boom sleeve 8 and the lower end face of the second boom 12, and the top end of the pull cable 16 is fixedly connected to the hook 17.

[0045] In use, the first boom 7 is connected to the support column 3 via the first reinforcing connector 4. The front outer side of the first boom 7 has a second boom 12, and the rear outer side has a boom sleeve 8. A second drive box 13 and a second counterweight box 14 are respectively installed on both sides of the second boom 12. The second drive box 13 contains a drive motor, the output of which is rotatably connected to a rotating shaft 1201. The rotating shaft 1201 passes through the bottom of the second boom 12 and is rotatably connected to the other side of the second boom 12. Gears 1202 are coaxially arranged on both sides of the rotating shaft 1201. When the rotating shaft 1201 rotates, the two... The side gear 1202 rotates synchronously and meshes with the rack 704. The rack 704 is fixedly connected to the lower end face of the first boom 7. Since the first boom 7 is connected inside the second boom 12 and is fixedly connected to the support column 3, the rotation of the shaft 1201 drives the gear 1202 to rotate. The gear 1202 moves forward along the rack 704, thereby driving the second boom 12 to extend forward, significantly increasing the working radius of the crane, enabling it to cover a larger working area. The length can be adjusted according to specific task requirements to adapt to different working environments and lifting requirements.

[0046] Second limiting plates 702 are provided at the middle and top of the first boom 7. A guide rod 703 is fixedly connected between the second limiting plates 702. A first limiting plate 701 is provided at the middle of the guide rod 703. Extension blocks 1203 are provided on both sides of the inner wall of the second boom 12. A guide hole 1204 passes through the interior of the extension block 1203. The extension block 1203 is slidably connected to the guide rod 703 between the middle second limiting plate 702 and the first limiting plate 701 through the guide hole 1204. When the second boom 12 extends to the front end through the rack 704 and the gear 1202, the guide rod 703 guides the extension direction of the second boom 12. At the same time, the extension blocks... 1203 is connected to guide rod 703, which provides more support for the second boom 12 and increases the rated lifting capacity of the second boom 12. Extension block 1203 is connected to guide rod 703 between the middle second limiting plate 702 and the first limiting plate 701. When the second boom 12 extends forward, the extension block 1203 on the inner side of the second boom 12 is limited between the first limiting plate 701 and the second limiting plate 702. When extension block 1203 touches the first limiting plate 701, the second boom 12 stops extending to prevent the boom from being too long and the boom and support structure from being unable to withstand excessive torque, resulting in deformation or even breakage.

[0047] The boom sleeve 8 has a groove 904, and a counterweight 9 is slidably connected in the groove 904. A traction motor 901 and a limit block 902 are fixedly connected to both sides of the groove 904, respectively. The output end of the traction motor 901 is rotatably connected to a lead screw 903, which passes through the counterweight 9 and is threadedly connected to the lead screw 903. When the lead screw 903 rotates, since the position of the lead screw 903 is fixed between the traction motor 901 and the limit block 902, the counterweight is driven by the lead screw 903 to slide in the groove 904, thereby changing the position of the counterweight and adjusting the center of gravity of the boom. When the second boom 12 extends forward, the counterweight 9 generates a counterbalancing torque to counteract the outward overturning torque generated by the heavy object and prevent the crane from overturning.

[0048] A winding roller 15 is installed under the outer sleeve 8 of the boom. The winding roller 15 is used to wind up the cable 16. At the same time, the cable 16 is supported and guided by the fixing ring 18 so that the hook 17 is located at the top of the second boom 12. When the second boom 12 extends forward, the cable 16 extends forward with the second boom 12. The first drive box 10 can control the rotation of the winding roller 15 to wind up and unwind the cable 16, thereby controlling the height of the hook 17.

[0049] All other parts of this utility model not described herein are the same as existing technology, or are known technology, or can be implemented using existing technology, and will not be described in detail here.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A specialized boom for dock hoses, characterized in that, include: A base (1) is rotatably connected to a steering structure (2). A support column (3) is fixedly connected inside the steering structure (2). A first reinforcing connector (4) and a second reinforcing connector (5) are fixedly connected to the outside of the support column (3). A support arm (6) is fixedly connected to the second reinforcing connector (5). A first boom (7) is fixedly connected to the first reinforcing connector (4). The other end of the support arm (6) is fixedly connected to the upper end face of the first boom (7). A boom sleeve (8) is installed on the outer rear end of the first boom (7). A second boom (12) is slidably connected to the outer front end of the first boom (7). An extension component is provided between the first boom (7) and the second boom (12). A balance component is provided on the upper end face of the boom sleeve (8).

2. The specialized boom for dock hoses according to claim 1, characterized in that: The extension assembly includes a rack (704) which is fixedly connected to the lower end face of the first boom (7). The rack (704) meshes with a gear (1202), which is rotatably connected to a rotating shaft (1201). The rotating shaft (1201) is rotatably connected to the bottom of the second boom (12).

3. A specialized dock hose crane according to claim 2, characterized in that: The rotating shaft (1201) passes through the inner wall of the second boom (12) and is rotatably connected to the second drive box (13) which is fixedly connected to the outer side of the second boom (12). The second counterweight box (14) is also fixedly connected to the outer side of the second boom (12). The second boom (12) and the second counterweight box (14) are symmetrically arranged.

4. A specialized dock hose crane according to claim 2, characterized in that: The first boom (7) is provided with a second limiting plate (702) in the middle and at the top. A guide rod (703) is fixedly connected between the second limiting plates (702). The first limiting plate (701) is fixedly connected in the middle of the guide rod (703).

5. A specialized dock hose crane according to claim 4, characterized in that: An extension block (1203) is slidably connected to the guide rod (703) between the first limiting plate (701) and the second limiting plate (702). A guide hole (1204) is opened on the extension block (1203) and slidably connected to the guide rod (703). The extension block (1203) is fixedly connected to the inner side of the second boom (12).

6. A specialized dock hose crane according to claim 1, characterized in that: The balancing component includes a counterweight (9), which is slidably connected in a groove (904) on the upper end face of the boom sleeve (8). One end of the groove (904) is fixedly connected to a limiting block (902), and the other end is fixedly connected to a traction motor (901).

7. A specialized dock hose crane according to claim 6, characterized in that: The output end of the traction motor (901) is rotatably connected to a lead screw (903), which passes through the counterweight (9) and is rotatably connected to the limit block (902).

8. A specialized dock hose crane according to claim 1, characterized in that: A connecting plate (1501) is provided on the lower end face of the boom jacket (8). A roller (15) is rotatably connected between the connecting plates (1501). A first drive box (10) is fixedly connected to the outside of the connecting plate (1501). A first counterweight box (11) is also fixedly connected to the outside of the connecting plate (1501). The first counterweight box (11) and the first drive box (10) are symmetrically arranged.

9. A specialized dock hose crane according to claim 8, characterized in that: A cable (16) is provided on the roller (15). The cable (16) passes through the lower end face of the boom jacket (8) and the lower end face of the second boom (12) and is fixedly connected to the hook (17).