Crane double-lifting double-amplitude system

Abstract

The utility model provides crane double hoisting double amplitude system, including two sets of hoisting mechanism, amplitude mechanism, amplitude dolly and hoisting mechanism, amplitude dolly includes upper pulley group, lower pulley group, double board, pin shaft, double board hole, arm root stop block and guide limiting device, upper pulley group is connected with amplitude dolly, lower pulley group is connected with hook group, double board is hinged connection with upper pulley group, and double board hole is set up on double board, and pin shaft is set up on lower pulley group, and pin shaft is matched with double board hole, the lower side surface of upper pulley group sets up guide limiting device, and guide limiting device is perpendicularly set up with upper pulley group, and the lower part of guide limiting device is equipped with the guide groove of opening, amplitude mechanism controls amplitude dolly through arm root stop block, can realize one crane to have two sets of independent hoisting system simultaneously, and can according to load automatic switching work ratio, thereby has reached the comprehensive innovation of operation efficiency, flexibility and hoisting performance.

Description

Technical Field

[0001] This utility model belongs to the field of crane technology, specifically a double-lifting and double-luffing crane system. Background Technology

[0002] In the field of lifting machinery technology, tower cranes, as an important vertical and horizontal transportation device, are widely used in various construction sites such as construction sites and port terminals. Traditional tower cranes typically employ a single hoisting mechanism and a single luffing mechanism, meaning that a single wire rope winding system drives a single hook for operation. While this classic structure is mature and reliable, its limitations are gradually becoming apparent when facing the demands of modern large-scale and complex construction projects.

[0003] Firstly, in the hoisting of large components, such as the installation of bridge segments and the assembly of large precast parts, it is often necessary to use two cranes working together to maintain the balance and stability of the components. Traditional single-hook cranes cannot meet this requirement, and often two cranes need to be configured to work simultaneously. This not only significantly increases equipment costs and space occupation, but also places extremely high demands on the coordination of operators, posing significant safety risks and management difficulties.

[0004] Secondly, the lifting ratio of a crane determines its lifting capacity and lifting speed performance characteristics. High-ratio mode offers a larger lifting capacity but slower speed, suitable for heavy-duty conditions; low-ratio mode offers a faster lifting speed but smaller lifting capacity, suitable for light loads or high-speed operation with an empty hook. In actual construction, working conditions are complex and varied, often requiring switching between different lifting ratios. Traditional cranes typically require manual intervention for ratio conversion, which is cumbersome, time-consuming, and may even require personnel to work at height, severely impacting work efficiency and creating safety hazards.

[0005] Therefore, there is an urgent need in this field for a novel crane structure that can achieve independent or coordinated operation of dual hooks without adding extra equipment, and can quickly and automatically complete the conversion of lifting ratio, thereby comprehensively improving the crane's operating efficiency, functional flexibility, and operational safety to meet increasingly demanding construction challenges. This utility model has emerged in response to this technological background. Utility Model Content

[0006] In view of the above problems, the purpose of this application is to provide a crane dual-lifting dual-luffing system, which enables a single crane to have two independent lifting systems at the same time, and can automatically switch the working ratio according to the load, thereby achieving a comprehensive innovation in operation efficiency, flexibility and lifting performance.

[0007] To achieve some or all of the above objectives or other objectives, this application provides the following technical solution: a crane double-lifting double-luffing system, including a tower body, a lower support, an upper support, a counterweight boom, a support frame, a lifting boom, a lifting mechanism, a luffing mechanism, a luffing trolley, and a lifting mechanism; the lower support is fixedly connected to the tower body, and the lower support and the upper support are rotatably connected; the counterweight boom and the lifting boom are respectively disposed on both sides of the upper support, the counterweight boom is fixed to one side of the upper support by a hinge point disposed at its root, and the lifting boom is fixed to the other side of the upper support by a hinge point disposed at its root, opposite to the counterweight boom; the luffing trolley includes an upper pulley block, a lower pulley block, a double-link plate, a pin shaft, a double-link plate hole, a boom root stop block, and a guide limiting device; the upper pulley block is connected to the luffing trolley; the lower pulley block is connected to the hook assembly; the double-link plate is connected to the hook assembly; the lower pulley block ... The upper pulley block is hinged, and a double-plate hole is opened on the double-plate. A pin is provided on the lower pulley block, and the pin matches the double-plate hole. A guide limiting device is provided on the lower side of the upper pulley block. The guide limiting device is perpendicular to the upper pulley block, and the lower part of the guide limiting device has an open guide groove, which matches the lower pulley block. The luffing mechanism controls the luffing trolley through the boom root stop block. The hoisting mechanism includes a first hoisting mechanism and a second hoisting mechanism. The luffing mechanism includes a first luffing mechanism and a second luffing mechanism. The luffing trolley includes a first luffing trolley and a second luffing trolley. The first hoisting mechanism and the second hoisting mechanism are mounted on the counterweight boom. The first luffing mechanism and the second luffing mechanism are mounted on the support frame. The first luffing trolley and the second luffing trolley are slidably connected to the support frame.

[0008] Furthermore, the luffing trolley also includes a guide cylinder; the upper part of the lower pulley group is provided with a guide cylinder, which contacts a guide limiting device; the guide limiting device is configured as a curved guide surface extending away from the upper pulley group, and the curved guide surface matches the cylindrical surface of the guide cylinder.

[0009] Furthermore, the boom root stop block is disposed at the root of the boom to limit the position of the luffing trolley. The boom root stop block interacts with the double-plate, and the boom root stop block causes the double-plate to open to release the pin.

[0010] Furthermore, the lower part of the double-plate is provided with a sloped structure, which guides the pin to slide into the double-plate hole; the double-plate hole includes an upper guide area and a lower locking area; the size of the upper guide area is larger than that of the pin, and the size of the lower locking area matches that of the pin.

[0011] Furthermore, stop plates are provided at both ends of the pin to prevent the pin from coming out.

[0012] Furthermore, the guide groove is V-shaped or U-shaped.

[0013] Furthermore, it also includes a first tie rod device and a second tie rod device; the first tie rod device is provided between the top of the support frame and the head of the lifting arm, and the second tie rod device is provided between the top of the support frame and the middle of the lifting arm.

[0014] Furthermore, a first hook and a second hook are respectively provided below the first luffing trolley and the second luffing trolley; the first luffing trolley is driven by the first luffing mechanism, and the first hook is driven by the first hoisting mechanism; the second luffing trolley is driven by the second luffing mechanism, and the second hook is driven by the second hoisting mechanism.

[0015] Furthermore, it also includes a rear tie rod device; the rear tie rod device is disposed between the support frame and the counterweight arm.

[0016] Furthermore, the first rope arrangement device and the second rope arrangement device are mounted on the counterweight arm, with the first rope arrangement device positioned close to the first lifting mechanism and the second rope arrangement device positioned close to the second lifting mechanism.

[0017] Compared with existing technologies, the advantages of this invention are as follows: By combining electronic control buttons and mechanical linkage, all ratio conversion operations can be completed remotely from the driver's cab, completely avoiding the risks of manual high-altitude operations and improving work efficiency. The precise cooperation between the guide limit device and the guide cylinder ensures that the lower pulley group automatically and accurately aligns with the upper pulley group during the ascent, greatly improving the success rate and reliability of pin insertion. Utilizing the mechanical trigger mechanism on the arm root stop block, the kinetic energy of the trolley's movement forcibly pushes open the double-plate, ensuring a positive and reliable unlocking action and effectively preventing accidental detachment or conversion failure due to incomplete unlocking.

[0018] The double-lifting, double-luffing structure of the crane provided by this utility model constitutes an efficient, flexible, safe and reliable crane solution that can perfectly adapt to the increasingly complex lifting needs of modern heavy industry and construction. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of two luffing trolleys located at the root of the crane boom; Figure 2 A schematic diagram of the structure of two luffing trolleys located at the head of the crane boom; Figure 3 A schematic diagram of the structure of the variable amplitude trolley in four-fold operating mode; Figure 4 A schematic diagram of the structure of the variable amplitude trolley in its double-rate working state; Figure 5 A schematic diagram illustrating the opening action of the double-plate trolley of the luffing trolley; Figure 6 This is a schematic diagram of the lower pulley block of the luffing trolley; Figure 7 This is a schematic diagram showing the interaction between the luffing trolley guide limit device and the guide cylinder. Figure 8 A new rope winding system for luffing trolleys; In the diagram: 1. Upper pulley block; 2. Lower pulley block; 3. Double-link plate; 4. Pin; 5. Double-link plate hole; 6. Arm root stop block; 7. Guide limiting device; 8. Guide cylinder; 9. Guide groove; 10. Curved guide surface; 11. Stop plate; 12. Inclined structure; 13. Drum; 14. Swing wheel; 15. No. 1 tower head pulley; 16. No. 2 tower head pulley; 17. Luffing trolley pulley; 18. Locking arm head; 19. Lifting pulley; 21. Tower body; 22. 23. Lower support; 24. Upper support; 25. Counterweight boom; 26. Support frame; 27. Lifting boom; 28. First lifting mechanism; 29. ​​Second lifting mechanism; 30. First luffing mechanism; 31. Second luffing mechanism; 32. First luffing trolley; 33. Second luffing trolley; 34. First hook; 35. Second hook; 36. First tie rod device; 37. First rope arrangement device; 38. Second rope arrangement device; 39. Rear tie rod device. Detailed Implementation

[0020] To make the structure and function of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0021] See appendix Figure 1-8The crane's double-lifting, double-luffing system includes a tower body 21, a lower support 22, an upper support 23, a counterweight boom 24, a support frame 25, a lifting boom 26, a lifting mechanism, a luffing mechanism, a luffing trolley, and a lifting mechanism. The lower support 22 is fixedly connected to the tower body 21, and the lower support 22 and the upper support 23 are rotatably connected. The counterweight boom 24 and the lifting boom 26 are respectively disposed on both sides of the upper support 23, and the counterweight boom 24 is fixed to the upper support by a hinge point located at its root. On one side of the upper support 23, the boom 26 is fixed to the other side of the upper support 23 via a hinge point located at its root, opposite to the counterweight boom 24; the luffing trolley includes an upper pulley block 1, a lower pulley block 2, a double-plate 3, a pin 4, a double-plate hole 5, a boom root stop block 6, and a guide limiting device 7; the upper pulley block 1 is connected to the luffing trolley; the lower pulley block 2 is connected to the hook assembly; the double-plate 3 is hinged to the upper pulley block 1, and the double-plate... A double-plate hole 5 is provided on plate 3, and a pin 4 is provided on the lower pulley group 2, which matches the double-plate hole 5; a guide limiting device 7 is provided on the lower side of the upper pulley group 1, which is perpendicular to the upper pulley group 1, and the lower part of the guide limiting device 7 is provided with an open guide groove 9, which matches the lower pulley group 2; the luffing mechanism controls the luffing trolley through the arm root stop block 6; the hoisting mechanism includes a first hoisting mechanism 27 and a second hoisting mechanism 28, the luffing mechanism includes a first luffing mechanism 29 and a second luffing mechanism 30, and the luffing trolley includes a first luffing trolley 31 and a second luffing trolley 32; the first hoisting mechanism 27 and the second hoisting mechanism 28 are provided on the balance arm 24, the first luffing mechanism 29 and the second luffing mechanism 30 are provided on the support frame 25, and the first luffing trolley 31 and the second luffing trolley 32 are slidably connected to the support frame 25.

[0022] The luffing trolley also includes a guide cylinder 8; the upper part of the lower pulley block 2 is provided with the guide cylinder 8, which is in contact with the guide limiting device 7; the guide limiting device 7 is a curved guide surface 10 extending away from the upper pulley block 1, and the curved guide surface 10 matches the cylindrical surface of the guide cylinder 8.

[0023] The boom root stop block 6 is located at the root of the boom and is used to limit the position of the luffing trolley. The boom root stop block 6 interacts with the double-plate 3, and the boom root stop block 6 causes the double-plate 3 to open to release the pin 4.

[0024] The lower part of the double-plate 3 is provided with a sloped structure 12, which guides the pin 4 to slide into the double-plate hole 5; the double-plate hole 5 includes an upper guide area and a lower locking area; the size of the upper guide area is larger than that of the pin 4, and the size of the lower locking area matches that of the pin 4.

[0025] The pin 4 is provided with stop plates 11 at both ends, and the stop plates 11 prevent the pin 4 from coming out.

[0026] The guide groove 9 is in the shape of a "V" or a "U".

[0027] It also includes a first tie rod device 35 and a second tie rod device 36; the first tie rod device 35 is provided between the top of the support frame 25 and the head of the lifting arm 26, and the second tie rod device 36 is provided between the top of the support frame 25 and the middle of the lifting arm 26.

[0028] Below the first luffing trolley 31 and the second luffing trolley 32, a first hook 33 and a second hook 34 are respectively provided; the first luffing trolley 31 is driven by the first luffing mechanism 29, and the first hook 33 is driven by the first hoisting mechanism 27; the second luffing trolley 32 is driven by the second luffing mechanism 30, and the second hook 34 is driven by the second hoisting mechanism 28.

[0029] The first lifting mechanism 27 and the second lifting mechanism 28 are symmetrically arranged on both sides of the counterweight arm 24.

[0030] It also includes a rear tie rod device 39; the rear tie rod device 39 is disposed between the support frame 25 and the counterweight arm 24.

[0031] The first rope arrangement device 37 and the second rope arrangement device 38 are mounted on the counterweight arm 24. The first rope arrangement device 37 is located near the first lifting mechanism 27, and the second rope arrangement device 38 is located near the second lifting mechanism 28.

[0032] The first amplitude-changing mechanism 29 and the second amplitude-changing mechanism 30 can be reliably connected.

[0033] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A crane dual-lifting dual-luffing system, characterized in that: It includes a tower body (21), a lower support (22), an upper support (23), a counterweight arm (24), a support frame (25), a lifting arm (26), a hoisting mechanism, a luffing mechanism, a luffing trolley, and a hoisting mechanism; the lower support (22) is fixedly connected to the tower body (21), and the lower support (22) and the upper support (23) are rotatably connected; The counterweight arm (24) and the lifting arm (26) are respectively disposed on both sides of the upper support (23). The counterweight arm (24) is fixed to one side of the upper support (23) by a hinge point disposed at its root. The lifting arm (26) is fixed to the other side of the upper support (23) by a hinge point disposed at its root, opposite to the counterweight arm (24). The luffing trolley includes an upper pulley block (1), a lower pulley block (2), a double-plate (3), a pin (4), a double-plate hole (5), a boom root stop block (6), and a guide limiting device (7); the upper pulley block (1) is connected to the luffing trolley; the lower pulley block (2) is connected to the hook assembly; the double-plate (3) is hinged to the upper pulley block (1), the double-plate (3) has a double-plate hole (5), the lower pulley block (2) has a pin (4), and the pin (4) matches the double-plate hole (5); the lower side of the upper pulley block (1) is provided with a guide limiting device (7), the guide limiting device (7) is perpendicular to the upper pulley block (1), and the lower part of the guide limiting device (7) has an open guide groove (9), the guide groove (9) matches the lower pulley block (2); The luffing mechanism controls the luffing trolley via the arm root stop block (6); The lifting mechanism includes a first lifting mechanism (27) and a second lifting mechanism (28), the luffing mechanism includes a first luffing mechanism (29) and a second luffing mechanism (30), and the luffing trolley includes a first luffing trolley (31) and a second luffing trolley (32). The first lifting mechanism (27) and the second lifting mechanism (28) are mounted on the counterweight arm (24), the first luffing mechanism (29) and the second luffing mechanism (30) are mounted on the support frame (25), and the first luffing trolley (31) and the second luffing trolley (32) are slidably connected to the support frame (25).

2. The crane dual-lifting dual-luffing system according to claim 1, characterized in that: The variable amplitude trolley also includes a guide cylinder (8); the upper part of the lower pulley group (2) is provided with a guide cylinder (8), and the guide cylinder (8) is in contact with the guide limiting device (7); the guide limiting device (7) is configured as a curved guide surface (10) extending away from the upper pulley group (1), and the curved guide surface (10) matches the cylindrical surface of the guide cylinder (8).

3. The crane dual-lifting dual-luffing system according to claim 1, characterized in that: The boom root stop block (6) is located at the root of the boom and is used to limit the position of the luffing trolley. The boom root stop block (6) interacts with the double-plate (3). The boom root stop block (6) causes the double-plate (3) to open to release the pin (4).

4. The crane dual-lifting dual-luffing system according to claim 1, characterized in that: The lower part of the double plate (3) is provided with a slope structure (12), which guides the pin (4) to slide into the double plate hole (5); the double plate hole (5) includes an upper guide area and a lower locking area; the size of the upper guide area is larger than that of the pin (4), and the size of the lower locking area matches that of the pin (4).

5. The crane dual-lifting dual-luffing system according to claim 1, characterized in that: The pin (4) is provided with stop plates (11) at both ends, and the stop plates (11) prevent the pin (4) from coming out.

6. The crane dual-lifting dual-luffing system according to claim 1, characterized in that: The guide groove (9) is V-shaped or U-shaped.

7. The crane dual-lifting dual-luffing system according to claim 1, characterized in that: It also includes a first tie rod device (35) and a second tie rod device (36); the first tie rod device (35) is provided between the top of the support frame (25) and the head of the lifting arm (26), and the second tie rod device (36) is provided between the top of the support frame (25) and the middle part of the lifting arm (26).

8. The crane dual-lifting dual-luffing system according to claim 1, characterized in that: Below the first luffing trolley (31) and the second luffing trolley (32), a first hook (33) and a second hook (34) are respectively provided; the first luffing trolley (31) is driven by the first luffing mechanism (29), and the first hook (33) is driven by the first hoisting mechanism (27); the second luffing trolley (32) is driven by the second luffing mechanism (30), and the second hook (34) is driven by the second hoisting mechanism (28).

9. The crane dual-lifting dual-luffing system according to claim 1, characterized in that: It also includes a rear tie rod device (39); the rear tie rod device (39) is disposed between the support frame (25) and the counterweight arm (24).

10. The crane dual-lifting dual-luffing system according to claim 1, characterized in that: It also includes a first rope arrangement device (37) and a second rope arrangement device (38); the first rope arrangement device (37) and the second rope arrangement device (38) are arranged on the balance arm (24), the first rope arrangement device (37) is arranged near the first lifting mechanism (27), and the second rope arrangement device (38) is arranged near the second lifting mechanism (28).

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