Support structure for a marine heavy-duty jack

Abstract

This utility model relates to the field of jack technology, specifically a support structure for a marine heavy-duty jack. It includes a support base, a first hydraulic cylinder fixedly connected to the center of the upper surface of the support base, a support platform fixedly connected to the upper end of the piston rod in the first hydraulic cylinder, and a fixed frame fixedly connected to the side of the first hydraulic cylinder near its upper end. A support arm is provided between the support platform and the fixed frame. The support arm includes a first connecting block, a second connecting block, a lower support rod, positioning teeth, an upper support rod, a fixed shaft, a rotating sleeve, a contact plate, an adjusting plate, a second hydraulic cylinder, and a pushing block. The piston rod in the first hydraulic cylinder pushes the support platform upwards to support the hull, while the support arm provides rigid support to both ends of the support platform, effectively improving the load-bearing capacity and stability of the support platform. The structure is relatively simple, easy to operate, and has low production and maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of jack technology, specifically to a support structure for a marine heavy-duty jack. Background Technology

[0002] A jack, also known as a lifting device, is a small, lightweight lifting device that uses a rigid lifting component as its working device to lift heavy objects within its stroke through a top support or bottom claw. Jacks consist of an adjusting screw, a U-shaped sealing ring, a rectangular sealing ring, etc., and are mainly classified as screw jacks, rack and pinion jacks, and hydraulic jacks. They are primarily used in factories, mines, transportation, and other sectors for vehicle repair and other lifting and support work. Their structure is lightweight, sturdy, flexible, and reliable, and can be carried and operated by one person. Heavy-duty jacks are often required for ship repair and the support of large machinery, especially in environments such as docks or wharves, where the stability and load-bearing capacity of the jack are crucial. With the increase in ship tonnage and maintenance needs, the requirements for the load-bearing capacity and stability of jack support structures are also becoming increasingly stringent.

[0003] In the existing technology, the marine jack support structure mainly adopts a single-arm support structure, which achieves lifting and lowering through a single hydraulic cylinder or screw. The structure is simple and easy to transport and use. However, in actual use, the load-bearing capacity is limited, and the support platform is prone to tilting when the force is uneven during the support process, resulting in low stability.

[0004] Therefore, it is necessary to invent a support structure for a marine heavy-duty jack to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a support structure for a marine heavy-duty jack, in order to solve the problems of limited load-bearing capacity and low stability caused by uneven force on the support platform during the support process.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a support structure for a marine heavy-duty jack, comprising a support base, a first hydraulic cylinder fixedly connected to the middle of the upper surface of the support base, a support platform fixedly connected to the upper end of the piston rod in the first hydraulic cylinder, a fixed frame fixedly connected to the side of the first hydraulic cylinder near the upper end, a support arm provided between the support platform and the fixed frame, the support arm comprising a first connecting block, a second connecting block, a lower support rod, a positioning chuck, an upper support rod, a fixed shaft, a rotating sleeve, an abutment plate, an adjusting plate, a second hydraulic cylinder, and a pushing block.

[0007] By adopting the above technical solution, the piston rod in the first hydraulic cylinder pushes the support platform upward to support the hull, while the support arm provides rigid support to the left and right ends of the support platform, effectively improving the stability and load-bearing capacity of the support platform.

[0008] Optionally, a first connecting block is fixedly connected to both the left and right sides of the upper surface of the fixing frame, and a second connecting block is fixedly connected to both the left and right sides of the lower surface of the support platform.

[0009] Optionally, the upper end of the lower support rod is rotatably connected to the lower end of the upper support rod, the lower end of the lower support rod is rotatably connected to the first connecting block, and the upper end of the upper support rod is rotatably connected to the second connecting block.

[0010] By adopting the above technical solution, during the lifting process of the support platform, the lower end of the lower support rod rotates around the first connecting block, the upper end of the upper support rod rotates around the second connecting block, and the upper end of the lower support rod rotates around the lower end of the upper support rod, thus unfolding the support arm to support the support platform.

[0011] Optionally, the positioning teeth are fixedly connected to the side surface of the lower support rod near the first hydraulic cylinder.

[0012] By adopting the above technical solution, the positioning teeth and the support rod are integrally formed, which effectively improves the support strength of the positioning teeth.

[0013] Optionally, the fixed shaft is fixedly connected to the inner wall of the upper support rod near the lower end, the rotating sleeve is rotatably connected to the fixed shaft, the abutment plate is fixedly connected to the side of the rotating sleeve, and the adjusting plate is fixedly connected to the upper end of the abutment plate.

[0014] By adopting the above technical solution, the rotating sleeve rotates around the fixed shaft, which in turn drives the adjusting plate and the abutment plate to rotate around the rotating sleeve. The lower end of the abutment plate is locked onto the surface of the positioning teeth, which supports the unfolded support arm, so that the support arm can support the support platform.

[0015] Optionally, the second hydraulic cylinder is fixedly installed on the inner side of the upper support rod near the upper end, and the push block is a cylinder, with the side of the push block fixedly connected to the lower end of the piston rod in the second hydraulic cylinder.

[0016] By adopting the above technical solution, when the support arm needs to be folded inward, the piston rod in the second hydraulic cylinder pushes the push block downward, causing the adjusting plate, the abutment plate and the rotating sleeve to rotate around the fixed axis, so that the lower end of the abutment plate disengages from the surface of the positioning teeth, making the support arm foldable.

[0017] Optionally, multiple sets of side support plates are fixedly connected at the connection between the first hydraulic cylinder and the support base.

[0018] By adopting the above technical solution, the side support plate improves the stability of the lower end of the first hydraulic cylinder.

[0019] Optionally, diagonal braces are fixedly connected to both the left and right sides of the fixing frame.

[0020] By adopting the above technical solution, the diagonal brace supports the fixed frame, improving the stability of the fixed frame and the upper end of the first hydraulic cylinder.

[0021] The technical effects and advantages provided by this utility model in the above technical solution are as follows: This utility model uses the piston rod in the first hydraulic cylinder to push the support platform upward to support the hull. At the same time, the support arm provides rigid support to the left and right ends of the support platform, which effectively improves the load-bearing capacity of the support platform, meets the support requirements of heavy marine equipment, and improves the stability of the support platform. It is not easy to tilt due to uneven force. Moreover, the structure is relatively simple, easy to operate, and has low production and maintenance costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the fixing frame structure of this utility model; Figure 3 This is a schematic diagram of the support arm structure of this utility model; Figure 4 This is a schematic diagram of the lower support rod structure of this utility model; Figure 5 This is a schematic diagram of the upper support rod structure of this utility model.

[0023] Explanation of reference numerals in the attached figures: 1. Support base; 11. First hydraulic cylinder; 12. Support platform; 13. Side support plate; 14. Fixing frame; 15. Diagonal brace; 16. First connecting block; 17. Second connecting block; 2. Support arm; 21. Lower support rod; 22. Positioning chuck; 23. Upper support rod; 24. Fixed shaft; 25. Rotating sleeve; 26. Abutment plate; 27. Adjusting plate; 28. Second hydraulic cylinder; 29. ​​Push block. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model provides, for example Figures 1 to 5The support structure of a marine heavy-duty jack shown includes a support base 1. A first hydraulic cylinder 11 is fixedly connected to the middle of the upper surface of the support base 1. Multiple sets of side support plates 13 are fixedly connected to the connection between the first hydraulic cylinder 11 and the support base 1. A support platform 12 is fixedly connected to the upper end of the piston rod in the first hydraulic cylinder 11. A fixing frame 14 is fixedly connected to the side of the first hydraulic cylinder 11 near the upper end. Diagonal braces 15 are fixedly connected to both the left and right sides of the fixing frame 14. A support arm 2 is provided between the support platform 12 and the fixing frame 14. The support arm 2 includes a first connecting block 16, a second connecting block 17, a lower support rod 21, a positioning tooth 22, an upper support rod 23, a fixing shaft 24, a rotating sleeve 25, an abutment plate 26, an adjusting plate 27, a second hydraulic cylinder 28, and a pushing block 29.

[0026] The base is made of Q345B steel plate with a thickness of 20mm, the support arm is made of high-strength alloy steel, the first hydraulic cylinder 11 is a double-acting hydraulic cylinder with a rated load of 50 tons, and the support platform 12 is made of steel plate with anti-slip texture on the surface to increase friction with the supported object, avoid slippage, and improve stability.

[0027] During operation, the first hydraulic cylinder 11 pushes the piston rod upward, and the piston rod pushes the support platform 12 upward. At this time, the lower support rod 21 and the upper support rod 23 rotate and unfold, thereby unfolding the support arm 2 to support the support platform 12. With the cooperation of the abutment plate 26 and the positioning tooth 22, the support platform 12 can be raised and lowered smoothly. The symmetrically arranged support arm 2 and the rigid structure further improve the load-bearing capacity and stability of the support platform 12.

[0028] Furthermore, during the process of supporting the load, the side support plate 13 effectively improves the stability of the first hydraulic cylinder 11, the diagonal support rod 15 improves the support capacity of the fixed frame 14, and in conjunction with the support arm 2, further improves the load-bearing capacity and stability of the support platform 12.

[0029] See Figures 2 to 5The upper surface of the fixed frame 14 is fixedly connected to the left and right sides of the first connecting block 16, and the lower surface of the support platform 12 is fixedly connected to the left and right sides of the second connecting block 17. The upper end of the lower support rod 21 is rotatably connected to the lower end of the upper support rod 23. The lower end of the lower support rod 21 is rotatably connected to the first connecting block 16, and the upper end of the upper support rod 23 is rotatably connected to the second connecting block 17. The positioning tooth 22 is fixedly connected to the side surface of the lower support rod 21 near the first hydraulic cylinder 11. The fixed shaft 24 is fixedly connected to the inner wall of the upper support rod 23 near the lower end. The rotating sleeve 25 is rotatably connected to the fixed shaft 24. The abutment plate 26 is fixedly connected to the side of the rotating sleeve 25. The adjusting plate 27 is fixedly connected to the upper end of the abutment plate 26. The second hydraulic cylinder 28 is fixedly installed on the inner side of the upper support rod 23 near the upper end. The pushing block 29 is a cylinder, and the side of the pushing block 29 is fixedly connected to the lower end of the piston rod in the second hydraulic cylinder 28.

[0030] Specifically, during the ascent of the support platform 12, the lower end of the lower support rod 21 rotates around the first connecting block 16, causing the upper end of the lower support rod 21 to rotate upwards. The upper end of the upper support rod 23 rotates around the second connecting block 17, causing the lower end of the upper support rod 23 to rotate downwards. Consequently, the lower end of the upper support rod 23 rotates around the upper end of the lower support rod 21. At this time, the support arm 2 unfolds. As the support arm 2 unfolds, the lower end of the abutment plate 26 will press against the surface of the positioning teeth 22 and gradually climb upwards. When the support platform 12 is subjected to uneven force, the lower end of the abutment plate 26 will abut against the groove between the positioning teeth 22, providing rigid support for the support platform 12 and preventing the support platform 12 from tilting to one side, thereby improving the stability of the support platform 12.

[0031] At the same time, when the support is lifted to the designated height, the height of the support platform 12 is finely adjusted by the first hydraulic cylinder 11 so that the lower end of the abutment plate 26 is locked in the groove between the positioning teeth 22. At this time, the support arm 2 cooperates with the first hydraulic cylinder 11 to support the support, thereby effectively improving the load-bearing capacity of the jack. It has a simple structure, is easy to operate, and has a low production cost.

[0032] In addition, when the support platform 12 needs to be lowered, the second hydraulic cylinder 28 is activated first. The second hydraulic cylinder 28 pushes the piston rod downward, which in turn pushes the push block 29 downward. The push block 29 pushes the upper end of the adjusting plate 27 to rotate around the fixed shaft 24, which in turn causes the rotating sleeve 25 and the abutment plate 26 to rotate around the fixed shaft 24. This causes the lower end of the abutment plate 26 to disengage from the groove between the positioning teeth 22. Without the limiting effect of the abutment plate 26, the lower support rod 21 and the upper support rod 23 can be rotated and folded, thereby allowing the support platform 12 to move downward smoothly.

[0033] The working principle of this utility model is as follows: the piston rod in the first hydraulic cylinder 11 pushes the support platform 12 upward to support the hull. At the same time, the support arm 2 provides rigid support to the left and right ends of the support platform 12, which effectively improves the load-bearing capacity of the support platform 12, meets the support requirements of marine heavy equipment, and improves the stability of the support platform 12. It is not easy to tilt due to uneven force. Moreover, the structure is relatively simple, easy to operate, and has low production and maintenance costs.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A support structure for a marine heavy-duty jack, comprising a support base (1), characterized in that: A first hydraulic cylinder (11) is fixedly connected to the middle of the upper surface of the support base (1). A support platform (12) is fixedly connected to the upper end of the piston rod in the first hydraulic cylinder (11). A fixing frame (14) is fixedly connected to the side of the first hydraulic cylinder (11) near the upper end. A support arm (2) is provided between the support platform (12) and the fixing frame (14). The support arm (2) includes a first connecting block (16), a second connecting block (17), a lower support rod (21), a positioning tooth (22), an upper support rod (23), a fixing shaft (24), a rotating sleeve (25), an abutment plate (26), an adjusting plate (27), a second hydraulic cylinder (28), and a pushing block (29).

2. A support structure of a heavy-duty marine jack according to claim 1, characterized in that: The upper surface of the fixed frame (14) is fixedly connected to the left and right sides of the first connecting block (16), and the lower surface of the support platform (12) is fixedly connected to the left and right sides of the second connecting block (17).

3. The support structure for a marine heavy-duty jack according to claim 2, characterized in that: The upper end of the lower support rod (21) is rotatably connected to the lower end of the upper support rod (23), the lower end of the lower support rod (21) is rotatably connected to the first connecting block (16), and the upper end of the upper support rod (23) is rotatably connected to the second connecting block (17).

4. The support structure for a marine heavy-duty jack according to claim 1, characterized in that: The positioning teeth (22) are fixedly connected to the side surface of the lower support rod (21) near the first hydraulic cylinder (11).

5. The support structure for a marine heavy-duty jack according to claim 1, characterized in that: The fixed shaft (24) is fixedly connected to the inner wall of the upper support rod (23) near the lower end. The rotating sleeve (25) is rotatably connected to the fixed shaft (24). The abutting plate (26) is fixedly connected to the side of the rotating sleeve (25). The adjusting plate (27) is fixedly connected to the upper end of the abutting plate (26).

6. The support structure for a marine heavy-duty jack according to claim 1, characterized in that: The second hydraulic cylinder (28) is fixedly installed on the inner side of the upper support rod (23) near the upper end. The push block (29) is a cylinder, and the side of the push block (29) is fixedly connected to the lower end of the piston rod in the second hydraulic cylinder (28).

7. The support structure for a marine heavy-duty jack according to claim 1, characterized in that: Multiple sets of side support plates (13) are fixedly connected at the connection between the first hydraulic cylinder (11) and the support base (1).

8. The support structure for a marine heavy-duty jack according to claim 1, characterized in that: The left and right sides of the fixed frame (14) are fixedly connected with diagonal braces (15).

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