Marine crane jib structure convenient to install

Abstract

The utility model discloses a marine crane boom structure convenient to install, and relates to the technical field of crane booms. The device comprises a base, a main arm and a first hydraulic telescopic rod are rotationally installed at the top end of the base, a second hydraulic telescopic rod is rotationally installed at the side end of the base, the main arm is rotationally connected with the first hydraulic telescopic rod, and a first telescopic arm is rotationally installed at the top end of the main arm; a second telescopic arm is slidably mounted on the first telescopic arm, the top end of the second hydraulic telescopic rod is rotatably connected with the first telescopic arm, a first hydraulic pump and a second hydraulic pump are further fixedly mounted on the base, and the output end of the first hydraulic pump communicates with the input end of the first hydraulic telescopic rod. The output end of the second hydraulic pump is communicated with the input end of the second hydraulic telescopic rod, so that the space occupied by the suspension arm can be reduced, the gravity center is lowered, and the crane and a ship body cannot be influenced by swing of the suspension arm when stormy waves are large.

Description

Technical Field

[0001] The utility model belongs to the technical field of crane booms, and in particular relates to a marine crane boom structure which is convenient to install. Background Art

[0002] Marine cranes are devices and machinery used for loading and unloading cargo on ships, mainly including boom devices, deck cranes and other loading and unloading machinery. Marine cranes are special cranes that perform transportation operations in a marine environment, mainly used for important tasks such as the transportation and transfer of cargo between ships, marine replenishment, and the deployment and recovery of underwater operating equipment.

[0003] However, the poor stability of some ships on the water brings great inconvenience to the lifting of cargo, especially some small and medium-sized ships. Due to their small size, when the wind and waves are strong, the hull can easily shake greatly as the center of gravity of the boom changes, posing a great safety hazard.

[0004] Therefore, it is necessary to improve the deficiencies and defects of the prior art and provide a marine crane boom structure that is easy to install.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a conveniently installed marine crane boom structure that can overcome the above problems or at least partially solve the above problems.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is: a marine crane boom structure that is easy to install, including a base, a main arm and a first hydraulic telescopic rod are rotatably installed on the top of the base, a second hydraulic telescopic rod is rotatably installed on the side end of the base, the main arm and the first hydraulic telescopic rod are rotatably connected, the first telescopic arm is rotatably installed on the top of the main arm, the second telescopic arm is slidably installed on the first telescopic arm, the top of the second hydraulic telescopic rod is rotatably connected to the first telescopic arm, and a first hydraulic pump and a second hydraulic pump are also fixedly installed on the base, the output end of the first hydraulic pump is connected to the input end of the first hydraulic telescopic rod, and the output end of the second hydraulic pump is connected to the input end of the second hydraulic telescopic rod.

[0008] In order to control the sliding of the second telescopic arm within the first telescopic arm, preferably, a rotating motor is fixedly installed in the second telescopic arm, a threaded disk is rotatably installed at the tail end of the second telescopic arm, the threaded disk is fixedly connected to the output end of the rotating motor, and a threaded groove matching the threaded disk is provided in the first telescopic arm.

[0009] In order to support and fix the main arm when the main arm is not in use, preferably, a first support frame is fixedly mounted on the base.

[0010] In order to support and fix the first telescopic arm when the first telescopic arm is not in use, further, a second supporting frame is fixedly mounted on the main arm.

[0011] In order to rotate the boom according to usage requirements, preferably, the base is a rotating pedestal.

[0012] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model is a marine crane boom structure that is easy to install, and the main arm is controlled to rotate on the base by the extension and retraction of the first hydraulic telescopic rod, and the first telescopic arm is controlled to rotate on the main arm by the extension and retraction of the second hydraulic telescopic rod, so that the second telescopic arm slides on the first telescopic arm, and the control device is extended and stretched when in use, and folded and contracted when not in use, so that the space occupied by the boom is reduced and the center of gravity is lowered, so that the crane and the hull will not be affected by the swing of the boom when the wind and waves are strong.

[0013] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0015] In the attached picture:

[0016] Figure 1 It is a schematic diagram of the stretching structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the contraction structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the telescopic arm of the utility model.

[0019] In the figure: 1. base; 2. main arm; 3. first telescopic arm; 4. second telescopic arm; 5. first hydraulic telescopic rod; 6. second hydraulic telescopic rod; 7. first hydraulic pump; 8. second hydraulic pump; 9. first support frame; 10. second support frame; 11. rotating motor; 12. threaded disk.

[0020] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0022] Example:

[0023] Reference Figure 1-3 As shown, a marine crane boom structure that is easy to install includes a base 1, a main arm 2 and a first hydraulic telescopic rod 5 are rotatably installed on the top of the base 1, a second hydraulic telescopic rod 6 is rotatably installed on the side end of the base 1, the main arm 2 and the first hydraulic telescopic rod 5 are rotatably connected, a first telescopic arm 3 is rotatably installed on the top of the main arm 2, a second telescopic arm 4 is slidably installed on the first telescopic arm 3, the top of the second hydraulic telescopic rod 6 is rotatably connected to the first telescopic arm 3, a first hydraulic pump 7 and a second hydraulic pump 8 are also fixedly installed on the base 1, the output end of the first hydraulic pump 7 is connected to the input end of the first hydraulic telescopic rod 5, and the output end of the second hydraulic pump 8 is connected to the input end of the second hydraulic telescopic rod 6.

[0024] A rotating motor 11 is fixedly installed in the second telescopic arm 4, and a threaded disk 12 is rotatably installed at the tail end of the second telescopic arm 4. The threaded disk 12 is fixedly connected to the output end of the rotating motor 11. A threaded groove matching the threaded disk 12 is provided in the first telescopic arm 3. The rotation of the threaded disk 12 is controlled by the rotating motor 11, so that the threaded disk 12 spirally rotates forward and backward inside the first telescopic arm 3, thereby controlling the sliding of the second telescopic arm 4 inside the first telescopic arm 3.

[0025] A first support frame 9 is fixedly installed on the base 1, and a second support frame 10 is fixedly installed on the main arm 2. When the device is folded and contracted, the main arm 2 is fixed on the first support frame 9, and the first support frame 9 supports the main arm 2. The first telescopic arm 3 is fixed on the second support frame 10, and the second support frame 10 supports the first telescopic arm 3, thereby improving the stability of the device when folded and contracted.

[0026] The base 1 is a rotating platform. When the device is in use, the base 1 rotates, allowing the boom to rotate to the target position.

[0027] The utility model is applied to the technical field of crane booms, wherein the first hydraulic pump 7 is used to deliver hydraulic oil into the first hydraulic telescopic rod 5, so that the first hydraulic telescopic rod 5 is extended, thereby increasing the angle between the main arm 2 and the top surface of the base 1, and the second hydraulic pump 8 is used to deliver hydraulic oil into the second hydraulic telescopic rod 6, so that the second hydraulic telescopic rod 6 is extended, so that the angle between the main arm 2 and the first telescopic arm 3 is increased, and when the main arm 2 and the first telescopic arm 3 are extended to a preset position, the rotating motor 11 is started to rotate the threaded disk 12, and the second telescopic arm 4 is controlled to slide out from the first telescopic arm 3, so as to extend the first telescopic arm 3 and the second telescopic arm 4, until the main arm 2 and the first telescopic arm 3 are extended to a preset position. When the second telescopic arm 4 reaches the target position, the boom work is performed through the main arm 2, the first telescopic arm 3 and the second telescopic arm 4. When the work is completed, the rotating motor 11 is used to rotate in the opposite direction to allow the second telescopic arm 4 to slide into the first telescopic arm 3, and the second hydraulic pump 8 draws out the hydraulic oil in the second hydraulic telescopic rod 6 to shrink the second hydraulic telescopic rod 6, and the angle between the main arm 2 and the first telescopic arm 3 becomes smaller. The first hydraulic pump 7 draws out the hydraulic oil in the first hydraulic telescopic rod 5 to shrink the first hydraulic telescopic rod 5, and the angle between the main arm 2 and the base 1 becomes smaller, thereby realizing the folding and shrinking of the main arm 2, the first telescopic arm 3 and the second telescopic arm 4.

[0028] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0029] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. A marine crane boom structure that is easy to install, characterized in that: The invention comprises a base (1), a main arm (2) and a first hydraulic telescopic rod (5) are rotatably mounted on the top of the base (1), a second hydraulic telescopic rod (6) is rotatably mounted on the side end of the base (1), the main arm (2) and the first hydraulic telescopic rod (5) are rotatably connected, a first telescopic arm (3) is rotatably mounted on the top of the main arm (2), a second telescopic arm (4) is slidably mounted on the first telescopic arm (3), the top of the second hydraulic telescopic rod (6) is rotatably connected to the first telescopic arm (3), and a first hydraulic pump (7) and a second hydraulic pump (8) are also fixedly mounted on the base (1), the output end of the first hydraulic pump (7) is connected to the input end of the first hydraulic telescopic rod (5), and the output end of the second hydraulic pump (8) is connected to the input end of the second hydraulic telescopic rod (6).

2. The easy-to-install marine crane boom structure according to claim 1, characterized in that: A rotating motor (11) is fixedly installed in the second telescopic arm (4), a threaded disc (12) is rotatably installed at the tail end of the second telescopic arm (4), the threaded disc (12) is fixedly connected to the output end of the rotating motor (11), and a threaded groove matching the threaded disc (12) is provided in the first telescopic arm (3).

3. The easy-to-install marine crane boom structure according to claim 1, characterized in that: A first support frame (9) is fixedly mounted on the base (1).

4. The easy-to-install marine crane boom structure according to claim 3, characterized in that: A second support frame (10) is fixedly mounted on the main arm (2).

5. The easy-to-install marine crane boom structure according to claim 1, characterized in that: The base (1) is a rotating platform.

Images