Hatch cover opening jacking device and jacking method

Abstract

The present invention belongs to the field of ship technology and discloses a hatch cover opening and lifting device and a lifting method. The hatch cover opening and lifting device includes a lifting mechanism and a connecting mechanism. The connecting mechanism includes a lifting lever, a locking assembly and a supporting structure. The locking assembly is connected to the lifting lever and is detachably engaged with the hatch cover. One end of the lifting lever is cantilevered relative to the hatch cover and abuts against the output end of the lifting mechanism. The supporting structure is supported between the lifting lever and the hatch cover and is located on both sides of the locking assembly with the lifting mechanism. When the lifting mechanism lifts the cantilevered end of the lifting lever, it can drive the hatch cover to move upward through the locking assembly. The setting of the supporting structure can better and more evenly transmit the force of the lifting mechanism to the hatch cover, so that the force on the hatch cover during the lifting process is more balanced. After the lifting operation is completed, the locking assembly and the hatch cover can be separated. After separation, no repainting process is required, thereby improving the efficiency of hatch cover installation and commissioning. The connecting mechanism can be reused after removal, reducing the waste of construction materials.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and in particular to a hatch cover opening and lifting device and a lifting method. Background Art

[0002] At present, during the installation and commissioning of the hatch cover system of a ship, it is necessary to lift and open the hatch cover. In the existing technology, a hatch cover lifting workpiece is usually welded at the hatch cover side plate position. The welded hatch cover lifting workpiece provides a lifting action point. A lifting mechanism such as a lifting cylinder is used to act on the hatch cover lifting workpiece to lift the entire hatch cover, thereby facilitating the installation and commissioning of the hatch cover after it is put on board the ship.

[0003] To ensure the normal use of the hatch cover, the hatch cover jacking workpiece welded on the hatch cover needs to be removed after the hatch cover commissioning and installation is completed. After removal, the paint on the hatch cover is damaged and the hatch cover jacking workpiece is wasted. Subsequently, the welding position on the hatch cover needs to be repainted, which wastes manpower and material resources and reduces the efficiency of hatch cover installation and commissioning.

[0004] Therefore, there is an urgent need for a hatch cover opening and lifting device and a lifting method to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a hatch cover opening and lifting device and a hatch cover opening and lifting method, which are convenient for on-site construction personnel to use during construction and can be reused, thereby reducing the waste of labor and construction materials and improving the efficiency of hatch cover installation and commissioning.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In one aspect, a hatch cover opening and lifting device is provided, comprising:

[0008] Lifting mechanism,

[0009] The connecting mechanism includes a lifting lever, a locking assembly and a supporting structure,

[0010] The locking assembly is connected to the lifting lever and is detachably engaged with the hatch cover. One end of the lifting lever cantilevers out relative to the hatch cover and abuts against the output end of the lifting mechanism. The supporting structure is supported between the lifting lever and the hatch cover, and the supporting structure and the lifting mechanism are respectively located on both sides of the locking assembly.

[0011] As a preferred solution of the hatch cover opening and lifting device provided by the present invention, the locking assembly is rotatably provided on the lifting lever to be engaged with or separated from the hatch cover.

[0012] As a preferred solution of the hatch cover opening and lifting device provided by the present invention, the locking assembly includes a locking rod, a strip-shaped locking plate and a locking nut;

[0013] The locking rod is rotatable and axially movably arranged on the lifting lever, the strip locking plate is connected to the lower end of the locking rod, and a connecting box seat is provided on the hatch cover. The connecting box seat is provided with a guide cavity and a locking cavity that are connected from top to bottom. A step locking structure is formed between the guide cavity and the locking cavity. The strip locking plate can enter the locking cavity through the guide cavity and be hooked on the step locking structure after rotation. The locking nut is threadedly sleeved on the upper end of the locking rod.

[0014] As a preferred solution of the hatch cover opening and lifting device provided by the present invention, a pad is provided between the locking nut and the lifting lever.

[0015] As a preferred solution of the hatch cover opening and lifting device provided by the present invention, a rotation limiting structure is provided between the strip locking plate and the stepped locking structure, and the rotation limiting structure is used to limit the rotation of the strip locking plate around the locking rod axis.

[0016] As a preferred solution of the hatch opening and lifting device provided by the present invention, the rotation limiting structure includes a limiting protrusion and a limiting slot that are engaged with each other, one of the limiting protrusion and the limiting slot is arranged on the strip locking plate, and the other of the limiting protrusion and the limiting slot is arranged on the step locking structure.

[0017] As a preferred solution of the hatch cover opening and lifting device provided by the present invention, a walking mechanism is provided at the bottom of the lifting lever, and the walking mechanism includes an elastic telescopic component and a movable roller, and the end of the elastic telescopic component away from the movable roller is provided on the bottom surface of the lifting lever.

[0018] As a preferred solution of the hatch cover opening and lifting device provided by the present invention, at least one of the walking mechanisms is provided on both sides of the locking assembly on the lifting lever.

[0019] As a preferred solution of the hatch cover opening and lifting device provided by the present invention, a lifting ring structure is provided on the top surface of the lifting lever.

[0020] On the other hand, a hatch cover opening and lifting method is provided, which is applied to the hatch cover opening and lifting device described above, comprising the following steps:

[0021] S1. symmetrically arrange four connecting mechanisms and four lifting mechanisms at the four corners of the hatch cover;

[0022] S2. Engaging the locking assembly with the hatch cover, and placing the support structure between the lifting lever and the hatch cover;

[0023] S3. The four lifting mechanisms synchronously lift the corresponding lifting levers until the hatch cover reaches a preset height.

[0024] Beneficial effects of the present invention:

[0025] The present invention provides a hatch cover opening and lifting device and a lifting method, in which four connecting mechanisms and four lifting mechanisms are symmetrically arranged at the four corners of the hatch cover. The four connecting mechanisms are used to engage with the corresponding positions of the hatch cover to achieve the connection between the lifting lever and the hatch cover. When the lifting mechanism lifts the cantilevered end of the lifting lever, the hatch cover can be driven upward by the locking assembly. Moreover, a support structure is provided between the end of the lifting lever away from the lifting mechanism and the hatch cover, so that the force of the lifting mechanism can be better and more evenly transmitted to the hatch cover, thereby preventing the lifting lever from being subjected to an eccentric load moment, making the force on the hatch cover more balanced during the lifting process, and improving the stability of the lifting process. In addition, the four lifting mechanisms synchronously lift the four corners of the hatch cover to ensure that the hatch cover always remains horizontal. After the lifting operation is completed, the locking assembly and the hatch cover can be separated. No welding process is required throughout the process, and no paint re-coating process is required after separation, thereby improving the efficiency of hatch cover installation and debugging. The connecting mechanism and the lifting mechanism can be reused after removal, reducing the waste of construction materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the distribution of four connecting mechanisms provided in a specific embodiment of the present invention;

[0027] Figure 2 2. It is a schematic diagram of a hatch cover opening and lifting device provided in a specific embodiment of the present invention;

[0028] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0029] Figure 4 is an exploded schematic diagram of a locking assembly provided in a specific embodiment of the present invention;

[0030] Figure 5 is a schematic diagram of a strip-shaped locking plate provided in a specific embodiment of the present invention in a locked position and an unlocked position;

[0031] Figure 6 It is a side view of the connection mechanism provided in a specific embodiment of the present invention.

[0032] In the picture:

[0033] 1. Lifting mechanism; 2. Connecting mechanism; 3. Connecting box seat;

[0034] 21. Lifting lever; 22. Locking assembly; 23. Support structure; 24. Travel mechanism; 25. Lifting ring structure;

[0035] 221, locking rod; 222, strip locking plate; 223, locking nut; 224, backing plate; 225, rotation limiting structure;

[0036] 241. Elastic telescopic component; 242. Moving roller;

[0037] 31. Guide cavity; 32. Locking cavity; 33. Step locking structure;

[0038] 100. Hatch cover; 200. Lifting workpiece. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0040] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0041] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0043] At present, in the installation and commissioning of the ship hatch cover system, it is necessary to lift and open the hatch cover 100. In the prior art, Figure 1 As shown, jacking workpieces 200 are typically welded to the side panels of the hatch cover 100. Specifically, a jacking workpiece 200 is welded to each of the four corners of the hatch cover 100. The welded jacking workpieces 200 provide jacking points. A jacking mechanism, such as a jacking cylinder, acts on the jacking workpieces 200 to lift the entire hatch cover 100, facilitating installation and commissioning of the hatch cover 100 on board the vessel.

[0044] To ensure the normal use of the hatch cover 100, the jacking workpiece 200 welded on the hatch cover 100 needs to be removed after the hatch cover 100 is debugged and installed. After removal, the paint on the hatch cover 100 is damaged and the jacking workpiece 200 of the hatch cover 100 is wasted. Subsequently, the welding position on the hatch cover 100 needs to be repainted, etc., which wastes manpower and material resources and reduces the installation and debugging efficiency of the hatch cover 100.

[0045] Based on the above problems, Figure 2 As shown, this embodiment provides a hatch cover opening and lifting device, including a lifting mechanism 1 and a connecting mechanism 2. Specifically, four connecting mechanisms 2 and four lifting mechanisms 1 are symmetrically arranged at the four corners of the hatch cover 100. The four connecting mechanisms 2 are all connected to the hatch cover 100, and the distribution method is as follows: Figure 1 As shown, the four lifting mechanisms 1 lift the hatch cover 100 through the four connecting mechanisms 2 in a one-to-one correspondence.

[0046] Specifically, the connecting mechanism 2 includes a lifting lever 21, a locking assembly 22 and a supporting structure 23. The locking assembly 22 is connected to the lifting lever 21 and is detachably engaged with the hatch cover 100. One end of the lifting lever 21 cantilevers out relative to the hatch cover 100 and abuts against the output end of the lifting mechanism 1. The supporting structure 23 is supported between the lifting lever 21 and the hatch cover 100, and the supporting structure 23 and the lifting mechanism 1 are respectively located on both sides of the locking assembly 22.

[0047] Four connecting mechanisms 2 engage corresponding positions on the hatch cover 100 to connect the lifting lever 21 to the hatch cover 100. When the lifting mechanism 1 raises the overhanging end of the lifting lever 21, the locking assembly 22 drives the hatch cover 100 upward. Furthermore, a support structure 23, located between the end of the lifting lever 21 facing away from the lifting mechanism 1 and the hatch cover 100, ensures better and more even transmission of the lifting mechanism 1's force to the hatch cover 100, preventing eccentric torque on the lifting lever 21. This ensures more balanced force on the hatch cover 100 during the lifting process, improving stability. Furthermore, the four lifting mechanisms 1 simultaneously lift the four corners of the hatch cover 100, ensuring that the hatch cover 100 remains level. After the lifting operation is completed, the locking assembly 22 can be separated from the hatch cover 100, eliminating the need for welding or repainting. This improves the efficiency of hatch cover 100 installation and commissioning. The connecting mechanisms 2 and lifting mechanism 1 can be reused after removal, reducing construction material waste.

[0048] The lifting lever 21 is a square steel structure, and the supporting structure 23 is a supporting block (rectangular block or cylindrical block). The lifting point of the lifting mechanism 1 on the lifting lever 21, the locking assembly 22 and the supporting structure 23 are in the same straight line to ensure that the lifting lever 21 is not subjected to a large eccentric load moment.

[0049] Optionally, the locking assembly 22 is rotatably provided on the lifting lever 21 to engage or disengage with the hatch cover 100. By rotating the locking assembly 22, the hatch cover 100 can be engaged or disengaged, which is convenient and quick to operate, and can improve the installation and commissioning efficiency of the hatch cover 100.

[0050] Specifically, see Figure 2 、 Figure 3 as well as Figure 4 The locking assembly 22 includes a locking rod 221, a strip-shaped locking plate 222, and a locking nut 223. The locking rod 221 is rotatably and axially movable through the lifting lever 21. The strip-shaped locking plate 222 is connected to the lower end of the locking rod 221. The hatch cover 100 is provided with a connecting box seat 3. The connecting box seat 3 is provided with a guide cavity 31 and a locking cavity 32 that are connected from top to bottom. A stepped locking structure 33 is formed between the guide cavity 31 and the locking cavity 32. The strip-shaped locking plate 222 can enter the locking cavity 32 through the guide cavity 31 and hook onto the stepped locking structure 33 after rotation. The locking nut 223 is threadedly sleeved on the upper end of the locking rod 221. Furthermore, a pad 224 is provided between the locking nut 223 and the lifting lever 21. When the locking nut 223 is tightened, the lifting lever 21 is in close contact with the upper surface of the connection box seat 3, and the locking nut 223 is pressed against the upper surface of the lifting lever 21 through the pad 224. The provision of the pad 224 can increase the contact area between the locking nut 223 and the lifting lever 21 to prevent stress concentration.

[0051] See also Figure 5 The strip locking plate 222 has a locking position and an unlocking position. When the strip locking plate 222 enters the locking cavity 32 and hooks on the stepped locking structure 33, it is in the locking position. When the jacking is completed, loosen the locking nut 223 and rotate the strip locking plate 222 again through the locking rod 221 to make the strip locking plate 222 completely face the guide cavity 31. After pulling up the locking rod 221, the strip locking plate 222 can enter the guide cavity 31 from the locking cavity 32, completing the separation of the locking assembly 22 and the connecting box seat 3.

[0052] In this embodiment, the strip-shaped locking plate 222 is a rectangular plate with rounded corners. It requires 90-degree rotation to switch between the locked and unlocked positions. After entering the locking cavity 32, the strip-shaped locking plate 222 rotates 90 degrees to engage with the stepped locking structure 33. Similarly, after rotating 90 degrees from the locked position, it can be smoothly removed from the guide cavity 31.

[0053] Exemplarily, the locking rod 221 is a long screw, which is welded to the strip locking plate 222 as a whole, and the locking nut 223 is welded to the backing plate 224 as a whole. A circular through-hole is provided on the lifting lever 21, and the locking rod 221 passes through the circular through-hole from the bottom to the top, and is locked by the locking nut 223 and the backing plate 224. When the connecting mechanism 2 is moved to the top of the connecting box seat 3, the strip locking plate 222 is placed into the locking cavity 32 by the locking rod 221 to complete the locking, and then the locking nut 223 is tightened. While tightening the locking nut 223, the support structure 23 is placed in place. After tightening the locking nut 223, it is ensured that the upper surface of the connecting box seat 3 and the lifting lever 21 are in full contact, to prevent the locking nut 223 from being subjected to excessive rotational force due to excessive gap, thereby causing a malfunction.

[0054] A rotation limiting structure 225 is provided between the strip locking plate 222 and the stepped locking structure 33 , and the rotation limiting structure 225 is used to limit the strip locking plate 222 from rotating around the axis of the locking rod 221 , thereby preventing the strip locking plate 222 in the locked position from rotating to the unlocked position.

[0055] Specifically, the rotation limiting structure 225 includes a limiting protrusion and a limiting slot, one of which is provided on the strip-shaped locking plate 222, and the other of which is provided on the stepped locking structure 33. When the limiting protrusion and the limiting slot engage, the rotation of the strip-shaped locking plate 222 is limited.

[0056] For example, a limiting protrusion can be set on the upper surface of the strip locking plate 222, and a limiting slot can be set at the corresponding position of the stepped locking structure 33. After the strip locking plate 222 is rotated to the locking position, the locking rod 221 is lifted to complete the engagement of the limiting protrusion and the limiting slot, and then the locking nut 223 is tightened.

[0057] See also Figure 2 and Figure 6 A travel mechanism 24 is provided at the bottom of the lifting lever 21 to facilitate transport to the hatch cover 100. The travel mechanism 24 includes an elastic telescopic assembly 241 and a movable roller 242. The end of the elastic telescopic assembly 241, away from the movable roller 242, is disposed on the bottom surface of the lifting lever 21. When the locking nut 223 is tightened, the lifting lever 21 moves downward, and the elastic telescopic assembly 241 adaptively compresses, ensuring good contact between the lifting lever 21, the connecting box seat 3, and the support structure 23. Exemplarily, the elastic telescopic assembly 241 includes a spring cylinder.

[0058] In this embodiment, at least one walking mechanism 24 is provided on both sides of the locking assembly 22 of the lifting lever 21 to ensure the stability of the lifting lever 21 .

[0059] Optionally, a lifting ring structure 25 is provided on the top surface of the lifting lever 21 so that the connecting mechanism 2 can be quickly loaded onto and unloaded from the ship and quickly lifted to a designated location by a lifting device.

[0060] This embodiment further provides a hatch cover opening and lifting method, which is applied to the hatch cover opening and lifting device described above, and includes the following steps:

[0061] S1. Four connecting mechanisms 2 and four lifting mechanisms 1 are symmetrically arranged at the four corners of the hatch cover 100;

[0062] S2. Engage the locking assembly 22 with the hatch cover 100 and place the support structure 23 between the lifting lever 21 and the hatch cover 100;

[0063] S3. The four lifting mechanisms 1 simultaneously lift the corresponding lifting levers 21 until the hatch cover 100 reaches a preset height.

[0064] Four connecting mechanisms 2 engage corresponding positions on the hatch cover 100 to connect the lifting lever 21 to the hatch cover 100. When the lifting mechanism 1 raises the overhanging end of the lifting lever 21, the locking assembly 22 drives the hatch cover 100 upward. Furthermore, a support structure 23, located between the end of the lifting lever 21 facing away from the lifting mechanism 1 and the hatch cover 100, ensures better and more even transmission of the lifting mechanism 1's force to the hatch cover 100, preventing eccentric torque on the lifting lever 21. This ensures more balanced force on the hatch cover 100 during the lifting process, improving stability. Furthermore, the four lifting mechanisms 1 simultaneously lift the four corners of the hatch cover 100, ensuring that the hatch cover 100 remains level. After the lifting operation is completed, the locking assembly 22 can be separated from the hatch cover 100, eliminating the need for welding or repainting. This improves the efficiency of hatch cover 100 installation and commissioning. The connecting mechanisms 2 and lifting mechanism 1 can be reused after removal, reducing construction material waste.

[0065] Furthermore, in step S3, whether there is a gap between the lifting lever 21 and the connection box seat 3 is monitored in real time. When a gap occurs, it is necessary to stop lifting to deal with the hidden danger. Specifically, a distance sensor can be set between the lifting lever 21 and the connection box seat 3 to detect whether there is a gap between the lifting lever 21 and the connection box seat 3.

[0066] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. The hatch cover opening and lifting device is characterized by: include: Lifting mechanism (1), The connecting mechanism (2) includes a lifting lever (21), a locking assembly (22) and a supporting structure (23), The locking assembly (22) is connected to the lifting lever (21) and is detachably engaged with the hatch cover (100); one end of the lifting lever (21) is cantilevered relative to the hatch cover (100) and abuts against the output end of the lifting mechanism (1); the supporting structure (23) is supported between the lifting lever (21) and the hatch cover (100), and the supporting structure (23) and the lifting mechanism (1) are respectively located on both sides of the locking assembly (22); The locking assembly (22) is rotatably arranged on the lifting lever (21) to be engaged with or separated from the hatch cover (100); The locking assembly (22) includes a locking rod (221), a strip-shaped locking plate (222), and a locking nut (223); The locking rod (221) is rotatably and axially movable through the lifting lever (21), the strip-shaped locking plate (222) is connected to the lower end of the locking rod (221), the hatch cover (100) is provided with a connecting box seat (3), and the connecting box seat (3) is provided with a guide cavity (31) and a locking cavity (32) that are connected from top to bottom, and a stepped locking structure (33) is formed between the guide cavity (31) and the locking cavity (32), and the strip-shaped locking plate (222) can enter the locking cavity (32) through the guide cavity (31) and be hooked on the stepped locking structure (33) after rotation, and the locking nut (223) is threadedly sleeved on the upper end of the locking rod (221).

2. The hatch cover opening and lifting device according to claim 1, characterized in that: A backing plate (224) is provided between the locking nut (223) and the lifting lever (21).

3. The hatch cover opening and lifting device according to claim 1, characterized in that: A rotation limiting structure (225) is provided between the strip-shaped locking plate (222) and the stepped locking structure (33), and the rotation limiting structure (225) is used to limit the rotation of the strip-shaped locking plate (222) around the axis of the locking rod (221).

4. The hatch cover opening and lifting device according to claim 3, characterized in that: The rotation limiting structure (225) comprises a limiting protrusion and a limiting slot that engage with each other, one of the limiting protrusion and the limiting slot being provided on the strip-shaped locking plate (222), and the other of the limiting protrusion and the limiting slot being provided on the stepped locking structure (33).

5. The hatch cover opening and lifting device according to any one of claims 1 to 4, characterized in that: A walking mechanism (24) is provided at the bottom of the lifting lever (21), and the walking mechanism (24) includes an elastic telescopic component (241) and a moving roller (242), and an end of the elastic telescopic component (241) away from the moving roller (242) is provided on the bottom surface of the lifting lever (21).

6. The hatch cover opening and lifting device according to claim 5, characterized in that: At least one walking mechanism (24) is provided on both sides of the locking assembly (22) on the lifting lever (21).

7. The hatch cover opening and lifting device according to any one of claims 1 to 4, characterized in that: The top surface of the lifting lever (21) is provided with a lifting ring structure (25).

8. A hatch cover opening and lifting method, characterized in that: The hatch cover opening and lifting device according to any one of claims 1 to 7 comprises the following steps: S1, symmetrically arranging four connecting mechanisms (2) and four lifting mechanisms (1) at the four corners of the hatch cover (100); S2, clamping the locking assembly (22) to the hatch cover (100), and placing the supporting structure (23) between the lifting lever (21) and the hatch cover (100); S3. The four lifting mechanisms (1) synchronously lift corresponding lifting levers (21) until the hatch cover (100) reaches a preset height.

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