Counterweight device capable of shifting on load and crane

Abstract

The utility model discloses a counter weight device capable of shifting with load and a crane, and relates to the technical field of cranes, the counter weight device comprises a rotary table connecting rotary arm, a rotary hinged shaft is arranged at the top of the rotary table connecting rotary arm, and two ends of the rotary hinged shaft are respectively and rotatably connected with the tops of two variable amplitude arms I; the bottom of each first variable-amplitude arm is connected with the bottom of the rotary arm through a first variable-amplitude power assembly connecting rotary table. The end, away from the rotary table and connected with the rotary arm, of the top of each first variable-amplitude arm is movably connected with one end of a second variable-amplitude arm through a fourth hinged shaft, and a hook is installed at the other end of the second variable-amplitude arm through a plug pin. The counterweight device capable of shifting on load and the crane can flexibly move in a specific range like a finger, realize flexible adjustment of counterweight amplitude and height, realize on-load shifting expansion and contraction under the condition of greatly reducing the weight of a structural member and an oil cylinder, effectively control the cost and improve the working efficiency. During rotation operation, the first variable-amplitude arm and the second variable-amplitude arm can cross obstacles conveniently, and the operation efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, specifically to a counterweight device and crane that can be repositioned under load. Background Technology

[0002] When a crane is lifting, a suitable counterweight needs to be placed behind the turntable to ensure the stability of the lifting operation. Traditional counterweight devices include components such as a counterweight frame, a turntable connecting boom, a telescopic frame, and a telescopic cylinder. The telescopic cylinder controls the telescopic frame and mounting base to extend and retract. However, this solution requires the counterweight frame to be disassembled when the counterweight is attached, which reduces the efficiency of the operation. This structure cannot adjust the height of the counterweight during operation, has low site adaptability, and the structural components and cylinders are heavy, resulting in high costs. Utility Model Content

[0003] The technical problem this utility model aims to solve is to overcome existing defects and provide a counterweight device and crane capable of load-bearing displacement. Luffing boom one and luffing boom two are hinged together by a rotary hinge shaft, and connected and fixed with the hinge points of luffing cylinder one and luffing cylinder two. Operating the extension and retraction movements of luffing cylinder one and luffing cylinder two allows each of the booms to move around its corresponding rotary hinge point. The counterweight device can move flexibly within a specific range, like a finger, achieving flexible adjustment of the counterweight amplitude and height. It can achieve load-bearing displacement and extension while significantly reducing the weight of structural components and cylinders, effectively controlling costs. Simultaneously, it facilitates the luffing booms overcoming obstacles during slewing operations, improving work efficiency. Compared to previous lifting-type counterweight systems, it is safer, more stable, and faster, with wider applicability, effectively solving the problems in the background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a counterweight device capable of load-bearing displacement, comprising a turntable connecting arm, wherein a rotating hinge shaft is mounted on the top of the turntable connecting arm, and the two ends of the rotating hinge shaft are respectively rotatably connected to the top of two luffing arms, and the bottom of each luffing arm is respectively connected to the bottom of the turntable connecting arm through a luffing power assembly.

[0005] The top of each luffing arm one is connected to one end of the luffing arm two via a hinge shaft four. The other end of the luffing arm two is equipped with a hook via a pin. The bottom of each luffing arm two is connected to the corresponding luffing arm one via a luffing power assembly two.

[0006] The turntable connecting boom is installed at the rear of the turntable on the crane. The luffing power assembly one is used to control the movement of the luffing boom one relative to the turntable connecting boom, and the luffing power assembly two is used to control the movement of the luffing boom two relative to the luffing boom one, thereby changing the height of the hook and the distance from the turntable. The pin is used to install the hook at the end of the luffing boom two. The hook is used to hang the counterweight load, so that it can move flexibly within a specific range like a finger, realizing flexible adjustment of the counterweight amplitude and height.

[0007] Furthermore, the luffing power assembly includes a hinge shaft, a luffing cylinder, and a hinge shaft. The bottom end of each luffing arm, away from the turntable connecting arm, is movably connected to one end of the luffing cylinder via the hinge shaft. The other end of each luffing cylinder is movably connected to the turntable connecting arm via the hinge shaft. When the luffing cylinder extends, it causes the luffing arm to rotate clockwise around the hinge shaft, raising the end of the luffing arm away from the turntable connecting arm, thus lifting the mounted counterweight. When the luffing cylinder shortens, it causes the luffing arm to rotate counterclockwise around the hinge shaft, lowering the end of the luffing arm away from the turntable connecting arm, thus lowering the mounted counterweight and changing its height. This alters both the counterweight's amplitude and height, facilitating the turntable's rotation over obstacles.

[0008] Furthermore, the luffing power assembly two includes a luffing cylinder two, a hinge shaft three, and a hinge shaft five. The bottom end of each luffing arm one, near the turntable, is movably connected to one end of the luffing cylinder two via hinge shaft five. The other end of each luffing cylinder two is movably connected to the bottom of the corresponding luffing arm two via hinge shaft three. When the luffing cylinder two extends, it causes the luffing arm two to rotate clockwise around hinge shaft four, raising the hook and the attached counterweight. When the luffing cylinder two shortens, it causes the luffing arm two to rotate counterclockwise around hinge shaft four, lowering the hook and the attached counterweight. This allows for changes in the counterweight's amplitude and height, and also facilitates the turntable's movement over obstacles during rotation.

[0009] Furthermore, it also includes copper sleeves. Each luffing boom is fitted with a copper sleeve on its top. The copper sleeves are rotatably connected to the end of the rotary hinge shaft. The copper sleeves make the connection between the luffing boom and the rotary hinge shaft more stable.

[0010] Furthermore, it also includes a crossbar and a flange. Two flanges are fixedly connected to each end of the crossbar, and the two flanges are respectively fixed to the adjacent sides of the two luffing arms by bolts. The crossbar and flanges fix the two luffing arms together, allowing them to move synchronously. An elastic gasket is also provided between the flanges and the luffing arms to ensure a stable connection.

[0011] Furthermore, it also includes a second crossbar and a second flange. Two flanges are fixedly connected to each end of the second crossbar, and the two flanges are respectively fixed to the adjacent sides of the two luffing arms by bolts. The second crossbar and the second flanges fix the two luffing arms together to form a whole, allowing the two luffing arms to move synchronously. An elastic gasket is provided between the second flange and the second luffing arm to improve the stability of the connection between the second flange and the luffing arm.

[0012] A crane includes a turntable and a counterweight device that can be repositioned under load, wherein the turntable-connected boom of the repositionable counterweight device is mounted on top of the turntable.

[0013] Compared with existing technologies, the advantages of this load-bearing displacement counterweight device and crane are:

[0014] 1. The luffing boom one and luffing boom two are hinged by a rotary hinge shaft, and are connected and fixed with the hinge points of luffing cylinder one and luffing cylinder two. By operating the extension and retraction movements of luffing cylinder one and luffing cylinder two, luffing boom one and luffing boom two can each move around their corresponding rotary hinge points. The counterweight device can move flexibly within a specific range like a finger, realizing flexible adjustment of the counterweight amplitude and height.

[0015] 2. It can achieve load-bearing displacement and extension while significantly reducing the weight of structural components and hydraulic cylinders, which can effectively control costs. At the same time, it facilitates the luffing boom one and luffing boom two to cross obstacles during slewing operations.

[0016] 3. It helps improve work efficiency. Compared with the previous lifting type of counterweight, it is safer, more stable and faster, and the counterweight has a wide range of applications. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a partial structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the second luffing arm and the first luffing arm after folding.

[0020] Figure 4 This is a schematic diagram of the structure of this utility model after the counterweight is attached;

[0021] In the diagram: 1 Turntable, 2 Turntable connecting arm, 3 Copper sleeve, 4 Hinge shaft one, 5 Luffing cylinder one, 6 Hinge shaft two, 7 Luffing cylinder two, 8 Hinge shaft three, 9 Luffing arm two, 10 Pin, 11 Hook, 12 Crossbar two, 13 Flange two, 14 Hinge shaft four, 15 Crossbar one, 16 Flange one, 17 Rotary hinge shaft, 18 Hinge shaft five, 19 Luffing arm one, 20 Counterweight load. Detailed Implementation

[0022] 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.

[0023] Example 1, please refer to Figures 1 to 4 This utility model provides a technical solution: a counterweight device that can be loaded and repositioned, including a turntable connecting arm 2, a rotating hinge shaft 17 is installed on the top of the turntable connecting arm 2, the two ends of the rotating hinge shaft 17 are respectively rotatably connected to the top of two luffing arms 19, and the bottom of each luffing arm 19 is respectively connected to the bottom of the turntable connecting arm 2 through a luffing power assembly.

[0024] The top of each luffing boom 19 is connected to one end of the luffing boom 2 away from the turntable via hinge shaft 4 14. The other end of the luffing boom 29 is equipped with a hook 11 via pin 10. The bottom of each luffing boom 29 is connected to the corresponding luffing boom 19 via luffing power assembly 2.

[0025] The luffing power assembly includes a hinge shaft 4, a luffing cylinder 5, and a hinge shaft 6. The bottom end of each luffing arm 19, away from the turntable and connected to the rotating arm 2, is movably connected to one end of the luffing cylinder 5 via hinge shaft 6. The other end of each luffing cylinder 5 is movably connected to the turntable and connected to the rotating arm 2 via hinge shaft 4. When the luffing cylinder 5 extends, it causes the luffing arm 19 to rotate clockwise around the pivot hinge 17, raising the end of the luffing arm 19 away from the turntable and connected to the rotating arm 2, thus lifting the mounted counterweight 20. When the luffing cylinder 5 shortens, it causes the luffing arm 19 to rotate counterclockwise around the pivot hinge 17, lowering the end of the luffing arm 19 away from the turntable and connected to the rotating arm 2, causing the mounted counterweight 20 to fall. This changes the height of the counterweight 20, simultaneously altering the counterweight amplitude and height, facilitating the rotation of the turntable over obstacles.

[0026] The luffing power assembly 2 includes a luffing cylinder 2 (7), a hinge shaft 3 (8), and a hinge shaft 5 (18). The bottom end of each luffing arm 19, near the turntable connecting arm 2, is movably connected to one end of the luffing cylinder 2 (7) via hinge shaft 5 (18). The other end of each luffing cylinder 2 (7) is movably connected to the bottom of the corresponding luffing arm 2 (9) via hinge shaft 3 (8). When the luffing cylinder 2 (7) extends, it causes the luffing arm 2 (9) to rotate clockwise around hinge shaft 4 (14), raising the hook 11 and the attached counterweight 20. When the luffing cylinder 2 (7) shortens, it causes the luffing arm 2 (9) to rotate counterclockwise around hinge shaft 4 (14), lowering the hook 11 and the attached counterweight 20. This allows for changes in the counterweight's amplitude and height, and also facilitates the turntable's movement over obstacles.

[0027] It also includes a copper sleeve 3, which is installed on the top of each luffing arm 19. The copper sleeve 3 is rotatably connected to the end of the rotary hinge shaft 17. The copper sleeve 3 makes the connection between the luffing arm 19 and the rotary hinge shaft 17 more stable.

[0028] Two copper sleeves 3 are each fitted with a baffle at their far ends by fastening screws. The baffles prevent the end of the rotating hinge 17 from disengaging from the copper sleeves 3.

[0029] It also includes a crossbar 15 and flanges 16. Two flanges 16 are fixedly connected to both ends of the crossbar 15. The two flanges 16 are respectively fixed to the adjacent sides of the two luffing arms 19 by bolts. The crossbar 15 and flanges 16 fix the two luffing arms 19 together, allowing them to move synchronously. An elastic gasket is also provided between the flanges 16 and the luffing arms 19 to ensure a stable connection.

[0030] It also includes a crossbar 12 and a flange 13. Two flanges 13 are fixedly connected to both ends of the crossbar 12. The two flanges 13 are respectively fixed to the adjacent sides of the two luffing arms 9 by bolts 2. The crossbar 12 and flanges 13 fix the two luffing arms 9 together to form a whole, allowing the two luffing arms 9 to move synchronously. An elastic gasket is provided between the flanges 13 and the luffing arms 9 to improve the stability of the connection between the flanges 13 and the luffing arms 9.

[0031] A locking nut and washer are installed at the end of hinge shaft 4 14 to prevent hinge shaft 4 14 from detaching and causing connection failure between luffing boom 2 9 and luffing boom 1 19. Locking nuts and washers are also installed at the ends of hinge shaft 1 4, hinge shaft 2 6, hinge shaft 3 8, and hinge shaft 5 18, with the same effect.

[0032] The turntable connecting boom 2 is installed at the rear of the turntable on the crane. The luffing power assembly one is used to control the movement of the luffing boom one 19 relative to the turntable connecting boom 2, and the luffing power assembly two is used to control the movement of the luffing boom two 9 relative to the luffing boom one 19, thereby changing the height of the hook 11 and the distance from the turntable. The pin 10 is used to install the hook 11 at the end of the luffing boom two 9. The hook 11 is used to hang the counterweight load 20, so that it can move flexibly within a specific range like a finger, realizing flexible adjustment of the counterweight amplitude and height.

[0033] Example 2, please refer to Figures 1 to 4 A crane includes a turntable 1 and a counterweight device that can be repositioned under load. The turntable connecting arm 2 of the counterweight device is installed on the top of the turntable 1. The turntable connecting arm 2 is installed at the top end of the turntable 1 by mounting bolts, which enables the crane to realize the function of repositioning the counterweight under load.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] 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 counterweight device capable of load-bearing displacement, characterized in that, The turntable connecting arm (2) is provided with a rotating hinge shaft (17) installed on the top of the turntable connecting arm (2). The two ends of the rotating hinge shaft (17) are respectively rotatably connected to the top of two luffing arms (19). The bottom of each luffing arm (19) is connected to the bottom of the turntable connecting arm (2) through a luffing power assembly. The top of each luffing arm one (19) is connected to one end of luffing arm two (9) via hinge shaft four (14) at the end away from the turntable connecting arm (2). The other end of the luffing arm two (9) is equipped with a hook (11) via a pin (10). The bottom of each luffing arm two (9) is connected to the corresponding luffing arm one (19) via luffing power assembly two.

2. The counterweight device capable of load displacement according to claim 1, characterized in that: The luffing power assembly includes a hinge shaft 1 (4), a luffing cylinder 1 (5) and a hinge shaft 2 (6). The bottom of each luffing arm 1 (19) is connected to one end of the luffing cylinder 1 (5) via the hinge shaft 2 (6) at the end away from the turntable connecting arm (2). The other end of each luffing cylinder 1 (5) is connected to the turntable connecting arm (2) via the hinge shaft 1 (4).

3. The counterweight device capable of load displacement according to claim 1, characterized in that: The luffing power assembly 2 includes a luffing cylinder 2 (7), a hinge shaft 3 (8) and a hinge shaft 5 (18). The bottom of each luffing arm 1 (19) is connected to one end of the luffing cylinder 2 (7) near the turntable and connected to the turntable arm (2) via the hinge shaft 5 (18). The other end of each luffing cylinder 2 (7) is connected to the bottom of the corresponding luffing arm 2 (9) via the hinge shaft 3 (8).

4. The counterweight device capable of load displacement according to claim 1, characterized in that: It also includes a copper sleeve (3), which is installed on the top of each luffing arm (19), and the copper sleeve (3) is rotatably connected to the end of the rotating hinge shaft (17).

5. The counterweight device capable of load displacement according to claim 1, characterized in that: It also includes a crossbar (15) and a flange (16). The two ends of the crossbar (15) are respectively fixedly connected to two flanges (16), and the two flanges (16) are respectively fixedly connected to the two luffing arms (19) on the side close to each other by bolts.

6. The counterweight device capable of load displacement according to claim 1, characterized in that: It also includes a crossbar 2 (12) and a flange 2 (13). The two ends of the crossbar 2 (12) are respectively fixedly connected to two flanges 2 (13). The two flanges 2 (13) are respectively fixedly connected to the two luffing arms 2 (9) on the side close to each other by bolts 2.

7. A crane, comprising a turntable (1), characterized in that, It also includes a counterweight device capable of being loaded and repositioned as described in any one of claims 1 to 6, wherein the turntable connecting arm (2) of the counterweight device capable of being loaded and repositioned is mounted on the top of the turntable (1).

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