Wharf loading and unloading frame and hoisting method
By designing the dock loading and unloading frame and two common rail gantry cranes to work in concert, the problem of insufficient lifting capacity of goods with a lifting weight of more than 50T on the marine engineering manufacturing base is solved, and efficient cargo lifting is achieved and cost reduction is reduced.
Patent Information
- Application Number
- CN202411179934.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2024-12-20
AI Technical Summary
The conventional shore lifting weight of marine engineering manufacturing bases is limited, resulting in the rental of expensive floating gondolas for goods with a lifting weight of more than 50T, which increases the loading and unloading costs.
A dock loading and unloading frame is designed, and two common rail gantry cranes work together. They are connected to the gantry crane through the hooks on the main body of the frame, upper car hoisting lugs and lower car hoisting lugs, and combined with the counterweight frame, to achieve efficient lifting of goods.
It effectively solved the problem of insufficient lifting capacity of goods with a lifting weight of more than 50T, reduced the lifting cost of loading and unloading goods at the front of the dock, and efficiently utilized the gantry crane resources.
Smart Images
Figure CN119160792A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of marine engineering, and in particular relates to a dock loading and unloading frame and a lifting method. Background Art
[0002] The loading and unloading method of cargo at the front of the dock of the offshore engineering manufacturing base is generally carried out by shore crane. The maximum lifting weight of conventional shore cranes at the front of the dock is generally around 50 tons. For cargo with a lifting weight of more than 50 tons, it is often necessary to rent a floating crane with expensive fees for loading and unloading.
[0003] In view of the resource advantage that marine engineering manufacturing bases are generally equipped with more than two gantry cranes, it is planned to use two common rail gantry cranes to coordinate the loading and unloading operations of cargo at the front of the dock. This can effectively solve the pain point that the hoisted cargo exceeds the lifting capacity of the dock's shore crane, and at the same time avoid the expensive cost expenditure caused by leasing a floating crane.
[0004] Therefore, it is urgent to design a dock loading and unloading framework and a lifting method to solve the above-mentioned problems. Summary of the invention
[0005] The purpose of the present invention is to provide a dock loading and unloading frame and lifting method, which has the advantages of efficiently utilizing the base gantry crane resources and greatly reducing the lifting cost of loading and unloading goods at the front of the dock, thereby solving the problems mentioned in the background technology.
[0006] To achieve the above-mentioned purpose, the specific technical scheme of a dock loading and unloading frame and a lifting method of the present invention is as follows: A dock loading and unloading frame comprises a frame body, a front end hook is provided on the frame body, the front end hook can be connected to the cargo through a sling, an upper trolley lifting lug is fixedly connected to the frame body, the upper trolley lifting lug can be connected to the upper trolley hook of a gantry crane through a sling, and a lower trolley lifting lug is fixedly connected to the frame body, the lower trolley lifting lug can be connected to the lower trolley hook of the gantry crane through the sling.
[0007] Furthermore, the front end of the frame body is connected to the front end hook through a sling.
[0008] Furthermore, a counterweight frame is provided at the tail of the frame body, and a counterweight block is placed in the counterweight frame.
[0009] Furthermore, the specific number of the upper trolley lifting eyes is four.
[0010] Furthermore, the specific number of the lower trolley lifting ears is two, and the two lower trolley lifting ears are located at the left and right ends of the frame body.
[0011] A method for lifting cargo for loading and unloading cargo at a dock, using a dock loading and unloading frame, comprises the following steps; S1. Move two gantry cranes to the designated lifting position at the dock; S2. Place the loading and unloading frame inside the two gantry cranes; S3, connect the loading and unloading frame with two gantry cranes; S4, connecting the loading and unloading frame with the cargo; S5. Two gantry cranes lift the goods to the designated location.
[0012] Further, in S1, the two gantry cranes share a common track, and the two gantry cranes are located on the gantry crane track, and then the two gantry cranes move to the designated lifting position of the dock through the gantry crane track.
[0013] Further, in S3, the upper trolley lifting lug on the loading and unloading frame is connected to the upper trolley hook of the gantry crane through a lifting sling, and the lower trolley lifting lug on the loading and unloading frame is connected to the lower trolley hook of the gantry crane through a lifting sling.
[0014] Further, in S4, the front end hook of the loading and unloading frame is connected to the cargo through a sling, and a counterweight block of a suitable size is placed in the counterweight frame at the rear end of the loading and unloading frame.
[0015] Further, the method includes S6, disconnecting the front end hook on the loading and unloading frame from the sling connecting the cargo.
[0016] The invention has the following advantages: the invention can effectively solve the problem that the hoisted cargo exceeds the hoisting capacity of the dock crane, and also avoid the expensive cost expenditure caused by renting a floating crane. The process can not only efficiently utilize the base gantry crane resources, but also greatly reduce the hoisting operation cost of loading and unloading cargo at the front of the dock. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the loading and unloading frame of the present invention; Figure 2 It is a schematic diagram of the lifting / hoisting position of the lifting method of the present invention; Figure 3 Schematic diagram of the lifting movement of the lifting method of the present invention Figure 1 ; Figure 4 Schematic diagram of the lifting movement of the lifting method of the present invention Figure 2 ; Explanation of marks in the figure: 1. Frame body; 11. Upper trolley lifting eye; 12. Lower trolley lifting eye; 13. Front end hook; 14. Counterweight frame; 15. Counterweight block; 16. Upper trolley hook; 17. Lower trolley hook; 18. Lifting rigging; 2. Gantry crane; 21. Gantry crane track; 22. Upper trolley; 23. Lower trolley; 3. Cargo; 31. Barge; 4. Wharf. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.
[0019] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.
[0020] Please refer to the attached Figure 1 To Attachment Figure 4 The invention describes a dock loading and unloading frame and a lifting method.
[0021] At present, the maximum lifting weight of conventional shore cranes at the front of the wharf is generally around 50 tons. For goods with a lifting weight of more than 50 tons, it is often necessary to rent expensive floating cranes for loading and unloading, which results in high lifting costs.
[0022] Therefore, the loading and unloading frame includes a frame body 1, on which is provided a front end hook 13, which can be connected to the cargo 3 through a sling 18, an upper trolley lifting ear 11 is fixedly connected to the frame body 1, and the upper trolley lifting ear 11 can be connected to the upper trolley hook 16 of the gantry crane 2 through the sling 18, and a lower trolley lifting ear 12 is fixedly connected to the frame body 1, and the lower trolley lifting ear 12 can be connected to the lower trolley hook 17 of the gantry crane 2 through the sling 18.
[0023] The upper trolley lifting eye 11 or the lower trolley lifting eye 12 fixed on the upper part of the loading and unloading frame is connected to the upper trolley hook 16 and the lower trolley hook 17 of the gantry crane 2 through a lifting sling 18. During the lifting process, the upper trolley hook 16 and the lower trolley hook 17 of the gantry crane 2 can be lifted, lowered or moved as needed to keep the loading and unloading frame under force balance and lift the cargo 3 to the designated location.
[0024] The front end hook 13 of the loading and unloading frame of the sling 18 can adjust the height difference between the front end hook 13 and the frame body 1 by adjusting the length of the sling 18.
[0025] A counterweight frame 14 is provided at the rear of the frame body 1 , and a counterweight block 15 is placed in the counterweight frame 14 , which can maintain the force balance of the loading and unloading frame through the hook lifting and hook releasing operations of the upper trolley 22 and the lower trolley 23 .
[0026] According to the weight of the hoisted cargo 3, a suitable counterweight can be loaded into the counterweight tray provided at the rear end of the loading and unloading frame to meet the requirements of the hoisting calculation force balance.
[0027] Preferably, the specific number of the upper trolley lifting ears 11 is four. In other embodiments of the present invention, the specific number of the upper trolley lifting ears 11 may be more than four, as long as the cargo 3 and the loading and unloading frame can maintain force balance when the upper trolley 22 and the lower trolley 23 are lifting and releasing the hook.
[0028] Preferably, the specific number of the lower trolley lifting ears 12 is two, and the two lower trolley lifting ears 12 are located at the left and right ends of the frame body 1. In other embodiments of the present invention, the specific number of the lower trolley lifting ears 12 may be more than two, as long as it can be ensured that the cargo 3 and the loading and unloading frame maintain force balance when the upper trolley 22 and the lower trolley 23 are lifting and releasing the hook.
[0029] A method for lifting cargo for loading and unloading cargo at a dock, using a dock loading and unloading frame, comprises the following steps; S1, move two gantry cranes 2 to the designated lifting position of the wharf 4; Specifically, the two gantry cranes 2 share a common track, and the two gantry cranes 2 are located on the gantry crane track 21 , and then the two gantry cranes 2 move to the designated lifting position of the dock 4 through the gantry crane track 21 .
[0030] S2, placing the loading and unloading frame on the inner side of the two gantry cranes 2; S3, connecting the loading and unloading frame to the two gantry cranes 2; Specifically, the upper trolley lifting lug 11 on the loading and unloading frame is connected to the upper trolley hook 16 of the gantry crane 2 through the sling 18, and the lower trolley lifting lug 12 on the loading and unloading frame is connected to the lower trolley hook 17 of the gantry crane 2 through the sling 18.
[0031] The upper trolley lifting eye 11 or the lower trolley lifting eye 12 fixed on the upper part of the loading and unloading frame is connected to the upper trolley hook 16 and the lower trolley hook 17 of the gantry crane 2 through a lifting sling 18. During the lifting process, the upper trolley hook 16 and the lower trolley hook 17 of the gantry crane 2 can be lifted, lowered or moved as needed to keep the force balance of the loading and unloading frame, and at the same time cooperate with the gantry crane 2 to move synchronously to lift the cargo 3 to the designated location.
[0032] S4, connecting the loading and unloading frame to the cargo 3; The front end hook 13 of the loading and unloading frame is connected to the cargo 3 through a sling 18, and a counterweight block 15 of a suitable size is placed in the counterweight frame 14 at the rear end of the loading and unloading frame.
[0033] The front end hook 13 of the loading and unloading frame can adjust the height difference between the front end hook 13 and the frame body 1 by adjusting the length of the sling 18 .
[0034] S5, two gantry cranes 2 lift the cargo 3 to the designated location; Specifically, the upper trolley 22 and the lower trolley 23 of the two gantry cranes 2 synchronously lift, move, and release the hook, and cooperate with the gantry cranes 2 to move synchronously to lift the cargo 3 to the designated location.
[0035] S6. Disconnect the front end hook 13 on the loading and unloading frame from the sling 18 connecting the cargo 3.
[0036] Specifically, after the front end hook 13 on the loading and unloading frame is disconnected from the sling 18 connecting the cargo 3, a lifting operation is completed.
[0037] If the next lifting operation is to be continued, steps S4 to S6 are repeated.
[0038] The present invention utilizes two gantry cranes 2 to be connected to a loading and unloading frame via a sling 18, and the front end hook 13 at the front end of the loading and unloading frame is connected to the cargo 3 via the sling 18. The two gantry cranes 2 are then synchronously hooked, walked, moved, and hooked, and the cargo 3 at the front of the barge 31 or the dock 4 is lifted to a designated location. After the connection between the front end of the loading and unloading frame and the cargo 3 is released, the next lifting operation can be repeated.
[0039] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.
Claims
1. A dock loading and unloading framework, characterized in that: It includes a frame body, which is provided with a front end hook, which can be connected to the cargo through a lifting sling, an upper trolley lifting lug is fixedly connected to the frame body, and the upper trolley lifting lug can be connected to the upper trolley hook of the gantry crane through the lifting sling, and a lower trolley lifting lug is fixedly connected to the frame body, and the lower trolley lifting lug can be connected to the lower trolley hook of the gantry crane through the lifting sling.
2. The dock loading and unloading frame according to claim 1, characterized in that: The front end of the frame body is connected with the front end hook through a sling.
3. The dock loading and unloading frame according to claim 1, characterized in that: A counterweight frame is arranged at the tail of the frame body, and a counterweight block is arranged in the counterweight frame.
4. The dock loading and unloading frame according to claim 1, characterized in that: The specific number of the upper trolley lifting eyes is four.
5. The dock loading and unloading frame according to claim 4, characterized in that: The specific number of the lower trolley lifting eyes is two, and the two lower trolley lifting eyes are located at the left and right ends of the frame body.
6. A method for lifting cargo for loading and unloading at a dock, characterized in that: Using the dock loading and unloading framework according to any one of claims 1 to 5 comprises the following steps; S1. Move two gantry cranes to the designated lifting position at the dock; S2. Place the loading and unloading frame inside the two gantry cranes; S3, connect the loading and unloading frame with two gantry cranes; S4, connecting the loading and unloading frame with the cargo; S5. Two gantry cranes lift the goods to the designated location.
7. The method for lifting cargo for loading and unloading cargo at a wharf according to claim 6, characterized in that: In S1, two gantry cranes share a common track and are located on the gantry crane track. The two gantry cranes are then moved to designated lifting positions at the dock via the gantry crane track.
8. The method for lifting cargo for loading and unloading cargo at a wharf according to claim 6, characterized in that: In S3, the upper trolley lifting lug on the loading and unloading frame is connected to the upper trolley hook of the gantry crane through a sling, and the lower trolley lifting lug on the loading and unloading frame is connected to the lower trolley hook of the gantry crane through a sling.
9. The method for lifting cargo for loading and unloading cargo at a wharf according to claim 6, characterized in that: In S4, the front end hook of the loading and unloading frame is connected to the cargo through a sling, and a counterweight block of a suitable size is placed in the counterweight frame at the rear end of the loading and unloading frame.
10. The method for lifting cargo for loading and unloading cargo at a wharf according to claim 9, characterized in that: The method further comprises S6, disconnecting the sling connecting the front end hook on the loading and unloading frame and the cargo.