Crane telescopic arm with turnover fly jib and crane

Abstract

The utility model relates to the technical field of cranes, in particular to a crane telescopic boom with a turnover fly jib and a crane, the telescopic boom comprises a telescopic boom body, a fly jib, a turnover driving component and a turnover shaft component, one end of the turnover driving component is rotatably connected to the side wall of the telescopic boom body, and the other end of the turnover driving component is rotatably connected to the fly jib. The turnover shaft assembly is arranged on the side, close to the bottom wall, of the side wall of the telescopic arm body, the turnover shaft assembly is rotationally and detachably connected with one side edge of the auxiliary arm, and the two sides of the tail end of the auxiliary arm are each provided with a clamping groove plate. The two sides of the tail end of the telescopic arm body are each provided with a hoisting shaft, and after the auxiliary arm is overturned to the position below the telescopic arm body, the two hoisting shafts are just located in the two clamping groove plates. According to the utility model, a new turnover mode is used in a specific working environment to solve the problem that the turnover of the fly jib occupies space, the operation is flexible, and meanwhile, the overall stability and safety of a mechanical device are kept.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, and particularly provides a telescopic boom of a crane with a rotatable jib and a crane. Background Art

[0002] Cranes are widely used in the field of engineering hoisting. When working in a narrow space, the traditional working mode of the crane, which rotates around the side of the boom with the boom tip as the center of the circle, cannot be used normally. During operation, the jib may be damaged due to contact affected by the working environment, which affects the project progress and increases the project cost. Content of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a telescopic boom of a crane with a rotatable jib and a crane.

[0004] The utility model is implemented as follows. A telescopic boom of a crane with a rotatable jib is provided, which includes a telescopic boom body, a jib, a flipping drive assembly, and a flipping shaft assembly. One end of the flipping drive assembly is rotatably connected to the side wall of the telescopic boom body, and the other end is rotatably and detachably connected to the side wall of the jib. The flipping shaft assembly is arranged on the side of the telescopic boom body close to the bottom wall. The flipping shaft assembly is rotatably and detachably connected to a side edge position of the jib. The flipping drive assembly drives the jib to flip from the side of the telescopic boom body to below the telescopic boom body around the flipping shaft assembly. A clamping groove plate is respectively arranged on both sides of the end of the jib, and a load-bearing shaft is respectively arranged on both sides of the end of the telescopic boom body. After the jib flips to below the telescopic boom body, the two load-bearing shafts are exactly located in the two clamping groove plates.

[0005] Preferably, the flipping drive assembly includes a drive seat, a first flipping seat, a flipping oil cylinder, and a first flipping shaft. The drive seat is fixedly connected to the telescopic boom body. The first flipping seat is fixedly connected to the side of the jib. The first flipping seat is rotatably connected to one end of the drive seat close to the bottom wall of the telescopic boom body through the first flipping shaft. The non-extensible end of the flipping oil cylinder is rotatably connected to one end of the drive seat away from the bottom wall of the telescopic boom body, and the extensible end is rotatably connected to the first flipping seat through an oil cylinder connecting shaft.

[0006] The flipping shaft assembly includes a second flipping seat and a second flipping shaft. The second flipping seat is fixedly arranged on the telescopic boom body, and the second flipping seat is rotatably connected to the jib through the second flipping shaft.

[0007] Further preferably, the second flipping shaft is a power pin controlled by a power pin oil cylinder.

[0008] Further preferably, when the auxiliary boom is flipped to the state below the telescopic boom body, a pull plate assembly is further provided on the side wall of the auxiliary boom away from the telescopic boom body. An ear plate is provided at the end of the telescopic boom body. After the auxiliary boom is separated from the flipping drive assembly and the flipping shaft assembly and rotates around the load hanging shaft to the target working position, the pull plate assembly is connected to the ear plate.

[0009] Further preferably, the pull plate assembly includes a first pull plate and a second pull plate. The first pull plate is rotatably connected to the auxiliary boom. The second pull plate is adjustably connected to the first pull plate, and the second pull plate is detachably connected to the ear plate.

[0010] The utility model further provides a crane, which is provided with the telescopic boom of the crane with a flipable auxiliary boom as described above.

[0011] Compared with the prior art, the advantages of the utility model are as follows:

[0012] The utility model provides a telescopic boom of a crane with a flipable auxiliary boom and a crane, which can solve the problem of the space occupied by the flipping of the auxiliary boom by using a new flipping method in a specific working environment according to the user's choice without changing the original overall design, with flexible operation, and at the same time maintaining the overall stability and safety of the mechanical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following further describes the utility model in detail with reference to the drawings and embodiments:

[0014] Figure 1 It is a schematic top view of the auxiliary boom in the state on the side of the telescopic boom body;

[0015] Figure 2 It is a schematic front view of the auxiliary boom in the state flipped below the telescopic boom body;

[0016] Figure 3 It is a schematic diagram of the flipping drive assembly in the state when the auxiliary boom is on the side of the telescopic boom body;

[0017] Figure 4 It is a schematic diagram of the flipping drive assembly in the state when the auxiliary boom is flipped below the telescopic boom body;

[0018] Figure 5 It is a schematic diagram of the flipping shaft assembly in the state when the auxiliary boom is on the side of the telescopic boom body;

[0019] Figure 6 It is a schematic diagram of the flipping shaft assembly in the state when the auxiliary boom is flipped below the telescopic boom body;

[0020] Figure 7 It is a schematic diagram of a working angle of the auxiliary boom. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] Embodiment 1:

[0023] Referring to Figures 1 - 7 , the present utility model provides a telescopic boom of a crane provided with a rotatable auxiliary boom, including a telescopic boom body 1, an auxiliary boom 2, a flipping drive assembly and a flipping shaft assembly. One end of the flipping drive assembly is rotatably connected to the side wall of the telescopic boom body 1, and the other end is rotatably and detachably connected to the side wall of the auxiliary boom 2. The flipping shaft assembly is arranged on one side of the side wall of the telescopic boom body 1 close to the bottom wall, and the flipping shaft assembly is rotatably and detachably connected to a side edge position of the auxiliary boom 2. The flipping drive assembly drives the auxiliary boom 2 to flip from the side of the telescopic boom body 1 to below the telescopic boom body 1 around the flipping shaft assembly. A clamping groove plate 3 is respectively arranged on both sides of the end of the auxiliary boom 2, and a load-bearing shaft 4 is respectively arranged on both sides of the end of the telescopic boom body 1. After the auxiliary boom 2 flips to below the telescopic boom body 1, the two load-bearing shafts 4 are exactly located in the two clamping groove plates 3.

[0024] In the daily working state, the auxiliary boom 2 is contracted and positioned by the flipping drive assembly, and the auxiliary boom 2 is fixed to one side of the telescopic boom body 1 by using the flipping drive assembly and the flipping shaft assembly. This design ensures that the auxiliary boom 2 can be compactly stored in the mechanical device when not in use to save space.

[0025] When the auxiliary boom 2 needs to be used, the flipping drive assembly works to push the auxiliary boom 2, and the auxiliary boom 2 flips around the flipping shaft assembly. This process continues until the auxiliary boom 2 flips from the side of the telescopic boom body 1 to below the bottom surface. At this time, the two clamping groove plates 3 at the end of the auxiliary boom 2 are positioned by the two load-bearing shafts 4 to ensure the accurate position of the auxiliary boom 2.

[0026] In order to enable the auxiliary boom 2 to be fully extended and enter the working state, the next step is to separate the auxiliary boom 2 from the flipping drive assembly and the flipping shaft assembly. This operation makes the auxiliary boom 2 break away from the control of the flipping drive assembly and can only rotate around the two load-bearing shafts 4.

[0027] Finally, insert the limit shafts on the clamping groove plates 3, and the auxiliary boom 2 rotates around the two load-bearing shafts 4 to the target working position and is fixed to reach its final working state. At this time, the auxiliary boom 2 is fully extended and ready to perform its designed functions, such as hoisting, supporting or other related operations.

[0028] To facilitate the full deployment of the auxiliary boom 2 to the target working position, the auxiliary boom 2 can also be pulled by a guide rope passing around a guide pulley 15, a hoisting pulley 16, and an auxiliary boom pulley 17 (not clearly marked in the figure). The design of this series of pulleys is intended to help the auxiliary boom 2 deploy smoothly and finally straighten it.

[0029] As a specific implementation of the flipping drive assembly and the flipping shaft assembly, the flipping drive assembly includes a drive seat 5, a first flipping seat 6, a flipping oil cylinder 7, and a first flipping shaft 9. The drive seat 5 is fixedly connected to the telescopic boom body 1. The first flipping seat 6 is fixedly connected to the side of the auxiliary boom 2. The first flipping seat 6 and one end of the drive seat 5 close to the bottom wall of the telescopic boom body 1 are rotatably connected by the first flipping shaft 9. The non-telescopic end of the flipping oil cylinder 7 is rotatably connected to one end of the drive seat 5 away from the bottom wall of the telescopic boom body 1, and the telescopic end is rotatably connected to the first flipping seat 6 through an oil cylinder connecting shaft 8.

[0030] The flipping shaft assembly includes a second flipping seat 10 and a second flipping shaft 11. The second flipping seat 10 is fixedly arranged on the telescopic boom body 1. The second flipping seat 10 and the auxiliary boom 2 are rotatably connected by the second flipping shaft 11.

[0031] During the process of driving the auxiliary boom 2 to flip, the flipping oil cylinder 7 acts to push the auxiliary boom 2 to flip and rotate around the first flipping shaft 9 and the second flipping shaft 11 until the auxiliary boom 2 is pushed below the telescopic boom body 1 to complete the flipping.

[0032] Preferably, the second flipping shaft 11 is a power pin controlled by a power pin oil cylinder.

[0033] To fix the auxiliary boom 2 in the working position, as an improvement of the technical solution, when the auxiliary boom 2 is in the state of being flipped below the telescopic boom body 1, a pull plate assembly is further provided on the side wall of the auxiliary boom 2 away from the telescopic boom body 1. An ear plate 12 is provided at the end of the telescopic boom body 1. After the auxiliary boom 2 is separated from the flipping drive assembly and the flipping shaft assembly and rotates around the load hanging shaft 4 to the target working position, the pull plate assembly is connected to the ear plate 12.

[0034] When the auxiliary boom 2 reaches the target working position, the pull plate assembly is pulled to extend the pull plate assembly, and the other end of the pull plate assembly is connected to the ear plate 12 to complete the fixation of the working position of the auxiliary boom 2.

[0035] As a specific implementation of the pull plate assembly, the pull plate assembly includes a first pull plate 13 and a second pull plate 14. The first pull plate 13 is rotatably connected to the auxiliary boom 2. The second pull plate 14 is connected to the first pull plate 13 with adjustable position, and the second pull plate 14 is detachably connected to the ear plate 12.

[0036] The position-adjustable connection method is as follows: a long strip hole is provided on the first pull plate 13, and a plurality of adjusting bolt and nut structures are provided on the second pull plate 14. When adjusting the length of the pull plate assembly, loosen the bolt and nut structure, pull the second pull plate 14, and after reaching the appropriate position, tighten the bolt and nut structure to achieve the adjustment of the length of the pull plate assembly.

[0037] Embodiment 2:

[0038] This embodiment provides a crane, which is provided with the telescopic boom of the crane with a rotatable auxiliary boom described in Embodiment 1.

[0039] The above has made a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A telescopic crane arm with a reversible auxiliary arm, characterized in that: The invention comprises a telescopic arm body (1), a secondary arm (2), a flipping drive assembly and a flipping shaft assembly, wherein one end of the flipping drive assembly is rotatably connected to the side wall of the telescopic arm body (1), and the other end is rotatably and detachably connected to the side wall of the secondary arm (2); the flipping shaft assembly is arranged on a side of the side wall of the telescopic arm body (1) close to the bottom wall; the flipping shaft assembly is rotatably and detachably connected to a side edge of the secondary arm (2); the flipping drive assembly drives the secondary arm (2) to flip and rotate from the side of the telescopic arm body (1) to the bottom of the telescopic arm body (1) around the flipping shaft assembly; a slot plate (3) is provided on both sides of the end of the secondary arm (2); a weight-lifting shaft (4) is provided on both sides of the end of the telescopic arm body (1); after the secondary arm (2) flips to the bottom of the telescopic arm body (1), the two weight-lifting shafts (4) are just located in the two slot plates (3).

2. The crane telescopic arm with a reversible auxiliary arm according to claim 1, characterized in that: The turning drive assembly comprises a driving seat (5), a first turning seat (6), a turning oil cylinder (7) and a first turning shaft (9); the driving seat (5) is fixedly connected to the telescopic arm body (1); the first turning seat (6) is fixedly connected to the side of the auxiliary arm (2); the first turning seat (6) is rotationally connected to an end of the driving seat (5) close to the bottom wall of the telescopic arm body (1) via the first turning shaft (9); the non-telescopic end of the turning oil cylinder (7) is rotationally connected to an end of the driving seat (5) away from the bottom wall of the telescopic arm body (1); the telescopic end is rotationally connected to the first turning seat (6) via the oil cylinder connecting shaft (8); The flip shaft assembly comprises a second flip seat (10) and a second flip shaft (11); the second flip seat (10) is fixedly arranged on the telescopic arm body (1); the second flip seat (10) is rotationally connected to the auxiliary arm (2) via the second flip shaft (11).

3. The crane telescopic arm with a reversible auxiliary arm according to claim 2, characterized in that: The second turning shaft (11) is a power pin shaft controlled by a power pin shaft cylinder.

4. The crane telescopic arm with a reversible auxiliary arm according to claim 1, characterized in that: When the auxiliary arm (2) is flipped to the bottom of the telescopic arm body (1), a pull plate assembly is provided on the side wall of the auxiliary arm (2) away from the telescopic arm body (1), and an ear plate (12) is provided at the end of the telescopic arm body (1). After the auxiliary arm (2) is separated from the flipping drive assembly and the flipping shaft assembly and rotated around the lifting shaft (4) to the target working position, the pull plate assembly is connected to the ear plate (12).

5. The crane telescopic arm with a reversible auxiliary arm according to claim 4, characterized in that: The pull plate assembly comprises a first pull plate (13) and a second pull plate (14); the first pull plate (13) is rotatably connected to the auxiliary arm (2); the second pull plate (14) is positionally adjustable to the first pull plate (13); and the second pull plate (14) is detachably connected to the ear plate (12).

6. A crane, characterized in that: A crane telescopic arm with a flippable jib as claimed in any one of claims 1 to 5 is provided.

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