Stable base for marine crane

Abstract

The invention relates to the related technical field of marine cranes, in particular to a stable base for a marine crane, which comprises a base body, a movable seat, walking pulleys and a traction trolley, the base body is fixedly mounted at the edge position of a clamping plate on a ship body, a rail groove is formed in the base body, and an open groove is formed in the upper side direction of the rail groove; the rail groove and the open groove are combined to form an inverted-T-shaped groove opening structure, the movable base is movably arranged in the rail groove, a receding groove is formed in the side wall of the movable base, a pulley installation shaft is integrally formed on the side wall of the receding groove, and a crane spindle is fixedly installed on the upper end face of the movable base. A crane cantilever is rotationally mounted at the upper side end of the crane main shaft through a rotating mechanism; the movable seat is dragged by the trailer wagon to move on the base body, so that the position of the main shaft of the crane can be adjusted very conveniently, and all positions of a ship body can be operated comprehensively while the size of the crane is controlled.

Description

Technical Field

[0001] The invention relates to the technical field related to ship cranes, and in particular to a stable base for ship cranes. Background Art

[0002] Crane refers to a multi-action lifting machine that can lift heavy objects vertically and move them horizontally within a certain range;

[0003] The existing Chinese patent document with the announcement number CN207434906U discloses a ship crane, which includes a hull, a cargo storage box is installed at the middle position of the top of the hull, an axle seat is installed on one side of the top of the hull, a rotating shaft is installed on the top of the axle seat, a mechanical arm is installed on the top of the rotating shaft, a mounting frame is installed on one end of the mechanical arm through a hinge, a wire control shaft is installed inside the mounting frame, a first wire hole is arranged at the middle position inside the mounting frame, a fixed frame is installed on one side of the mounting frame, a pulley is installed on one end of the fixed frame, a motor is installed on the top of the fixed frame, a wire take-up shaft is installed on the bottom of the fixed frame through a guard plate, a second hydraulic device is installed at the bottom of the mounting frame, a mechanical claw is installed at the bottom of the second hydraulic device, a second wire hole is arranged at the middle position of the mechanical claw, a suction cup is installed at the bottom of the mechanical claw, a wire rope is installed on the wire take-up shaft, and a self-detaching hook is installed at one end of the wire rope;

[0004] However, the base structure of the above-mentioned ship crane is relatively simple, and it is fixedly installed on the hull, and it is unable to cover the entire hull part of the hull. If a larger lifting equipment is set to cover the hull, the lifting equipment will be larger in size, thereby increasing the use cost of the lifting equipment. Therefore, the present invention proposes a stable base for a ship crane to solve the above-mentioned problem. Summary of the invention

[0005] The object of the present invention is to provide a stable base for a ship crane to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a stable base for a ship crane, comprising:

[0007] A base body, the base body is fixedly mounted at the edge of the clamping plate on the hull, a track groove is opened on the base body, an opening groove is opened on the upper side of the track groove, and the track groove and the opening groove are combined to form a convex notch structure;

[0008] Moving seat, the moving seat is movably arranged in the track groove, and an avoidance groove is formed on the side wall of the moving seat. A pulley mounting shaft is integrally formed on the side wall of the avoidance groove. The upper end surface of the moving seat is fixedly installed with a crane main shaft. The upper side end of the crane main shaft is rotatably installed with a crane boom through a rotating mechanism. A lifting mechanism is installed at the end of the crane boom;

[0009] Traveling pulley, the traveling pulley is rotatably installed on the pulley mounting shaft;

[0010] Traction trolley, the crane main shaft passes through the opening groove. A connecting seat is fixedly welded on the side wall of the crane main shaft. The traction trolley is movably installed on the clamping plate. The connecting seat is fixedly connected with the traction trolley through a bolt structure.

[0011] Preferably, the height value of the moving seat is less than the depth value of the track groove. The diameter value of the traveling pulley is less than the depth value of the track groove. When the traveling pulley is actually installed, the upper side of the traveling pulley is higher than the upper surface of the moving seat, and the lower side of the traveling pulley is lower than the lower surface of the moving seat. There is an overlapping area between the traveling pulley and the upper side of the track groove.

[0012] Preferably, an installation groove is formed on the traveling pulley. The installation groove does not completely penetrate the traveling pulley. The traveling pulley is sleeved and installed on the pulley mounting shaft through the installation groove. When the traveling pulley is actually installed, the end surface of the pulley mounting shaft is abutted against the bottom of the installation groove. At this time, the outer end surface of the traveling pulley is abutted against the side wall of the track groove.

[0013] Preferably, the end surface of the pulley mounting shaft is an arc surface convex in the middle. The outer end surface of the traveling pulley is an arc surface convex in the middle. The inner end of the traveling pulley is a circular ring structure with a semicircular cross section.

[0014] Preferably, a piston cavity and an oil storage tank are formed on the crane main shaft. The piston cavity and the oil storage tank are communicated through a connecting hole. The piston cavity penetrates the moving seat. A piston rod is movably installed in the piston cavity. The lower side end of the piston rod is hemispherical. The upper side end of the piston rod is connected with the bottom of the piston cavity through a connecting spring.

[0015] Preferably, an upper annular groove and a lower annular groove are formed on the side wall of the piston cavity. An oil guiding groove is formed on the side wall of the piston rod.

[0016] Preferably, a main oil groove and a secondary oil groove are formed in the moving seat. A set of the main oil groove and the secondary oil groove are symmetrically arranged. The main oil groove is communicated with the lower annular groove. The secondary oil groove is communicated with the end of the main oil groove and extends to the pulley mounting shaft. An oil outlet groove is formed in the pulley mounting shaft. The oil outlet grooves are uniformly arranged in multiple channels, and the inner ends of the oil outlet grooves are communicated with the secondary oil groove.

[0017] Preferably, force-bearing protrusions are formed at the bottom of the track groove. The force-bearing protrusions are rod-shaped protrusion structures with a semicircular cross-section, and the force-bearing protrusions and the traveling pulleys are arranged in a staggered manner. The piston rod is aligned with the force-bearing protrusions.

[0018] Preferably, when the piston rod and the force-bearing protrusions are in a staggered state, the piston rod abuts against the bottom surface of the track groove. At this time, the lower end of the oil guiding groove is communicated with the lower annular groove. When the piston rod abuts against the force-bearing protrusions, the piston rod moves upward. At this time, the upper end of the oil guiding groove is communicated with the upper annular groove. The distance between the upper annular groove and the lower annular groove is greater than the length of the oil guiding groove.

[0019] Preferably, liquid lubricating oil is stored in the oil storage tank, and a lubricating oil filling port is arranged at the upper end position of the oil storage tank. The port of the lubricating oil filling port is sealed by a sealing cover.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. By providing a stable base for a marine crane composed of a base body, a moving seat, traveling pulleys and a towing cart, the moving seat is towed by the towing cart to move on the base body, so that the position of the main shaft of the crane can be adjusted very conveniently. While controlling the size of the crane, it can comprehensively cover and operate on various positions of the hull.

[0022] 2. The traveling pulleys are sleeved and installed on the pulley mounting shaft through the installation grooves, so that the traveling pulleys can be conveniently replaced. The end faces of the pulley mounting shaft and the traveling pulleys are both outwardly convex arc surfaces, effectively reducing the friction force suffered by the moving seat during the moving process.

[0023] 3. By forming a piston cavity and an oil storage tank on the main shaft of the crane, an upper annular groove and a lower annular groove are formed on the side wall of the piston cavity, an oil guiding groove is formed on the side wall of the piston rod, and force-bearing protrusions are formed at the bottom of the track groove. Through the contact and separation process between the piston rod and the force-bearing protrusions, a small amount of lubricating oil is led out to lubricate between the pulley mounting shaft and the traveling pulleys, effectively reducing structural wear and achieving the purpose of improving the service life of the structure. Description of the Drawings

[0024] Figure 1 Structural schematic diagram of the present invention;

[0025] Figure 2 Structural schematic diagram of the base body of the present invention;

[0026] Figure 3 is Figure 2 Enlarged schematic diagram of the structure at position A in;

[0027] Figure 4 Half-sectional view of the base body of the present invention;

[0028] Figure 5 is Figure 4 Enlarged schematic diagram of the structure at position B in;

[0029] Figure 6 is Figure 5 Enlarged schematic diagram of the structure at position C in;

[0030] Figure 7 Structural schematic diagram of the moving seat of the present invention;

[0031] Figure 8 is Figure 7 Enlarged schematic diagram of the structure at position D in;

[0032] Figure 9 Half-sectional view of the moving seat of the present invention.

[0033] In the figure: base body 1, moving seat 2, traveling pulley 3, towing cart 4, hull 5, clamping plate 6, track groove 7, pulley mounting shaft 8, connecting seat 9, crane main shaft 10, crane boom 11, hoisting mechanism 12, piston cavity 13, oil storage tank 14, connecting hole 15, piston rod 16, connecting spring 17, upper annular groove 18, lower annular groove 19, oil guiding groove 20, main oil groove 21, secondary oil groove 22, oil outlet groove 23, force projection 24, lubricating oil filling port 25, sealing cover 26, opening groove 27. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1-9 , the present invention provides embodiments of the following three preferred solutions:

[0036] Embodiment 1: A stable base for a marine crane, comprising a base body 1, a moving seat 2, traveling pulleys 3 and a towing cart 4. The base body 1 is fixedly installed at the edge position of the upper clamping plate 6 of the hull 5. A track groove 7 is provided on the base body 1, and an opening groove 27 is provided in the upper side direction of the track groove 7. A convex-shaped notch structure is formed by combining the track groove 7 and the opening groove 27. The moving seat 2 is movably arranged in the track groove 7, and an avoidance groove is provided on the side wall of the moving seat 2. A pulley mounting shaft 8 is integrally formed on the side wall of the avoidance groove. The upper end surface of the moving seat 2 is fixedly installed with a crane main shaft 10. The upper side end of the crane main shaft 10 is rotatably installed with a crane boom 11 through a rotating mechanism. A hoisting mechanism 12 is installed at the end of the crane boom 11. The traveling pulleys 3 are rotatably installed on the pulley mounting shaft 8. The crane main shaft 10 passes through the opening groove 27. A connecting seat 9 is fixedly welded on the side wall of the crane main shaft 10. The towing cart 4 travels and is installed on the clamping plate 6. The connecting seat 9 is fixedly connected with the towing cart 4 through a bolt structure.

[0037] The height value of the moving seat 2 is less than the depth value of the track groove 7. The diameter value of the traveling pulley 3 is slightly less than the depth value of the track groove 7. When the traveling pulley 3 is actually installed, the upper side of the traveling pulley 3 is higher than the upper surface of the moving seat 2, and the lower side of the traveling pulley 3 is lower than the lower surface of the moving seat 2. There is an overlapping area between the traveling pulley 3 and the upper side of the track groove 7. By providing a stable base for a marine crane composed of the base body 1, the moving seat 2, the traveling pulleys 3 and the towing cart 4, the moving seat 2 is towed by the towing cart 4 to move on the base body 1, so that the position of the crane main shaft 10 can be adjusted very conveniently. While controlling the size of the crane, it can cover all positions of the hull 5 for operation.

[0038] Embodiment 2: On the basis of Embodiment 1, an installation groove is provided on the traveling pulley 3. The installation groove does not completely penetrate the traveling pulley 3. The traveling pulley 3 is sleeved and installed on the pulley mounting shaft 8 through the installation groove. When the traveling pulley 3 is actually installed, the end face of the pulley mounting shaft 8 abuts against the bottom of the installation groove. At this time, the outer end face of the traveling pulley 3 abuts against the side wall of the track groove 7. The end face of the pulley mounting shaft 8 is an arc-shaped surface convex in the middle. The outer end face of the traveling pulley 3 is an arc-shaped surface convex in the middle. The inner end of the traveling pulley 3 is a circular ring structure with a semicircular cross-section. The traveling pulley 3 is sleeved and installed on the pulley mounting shaft 8 through the installation groove, so that the traveling pulley 3 can be conveniently replaced. Moreover, the end faces of the pulley mounting shaft 8 and the traveling pulley 3 are both arc-shaped surfaces convex outward, so as to effectively reduce the friction force received by the moving seat 2 during the moving process.

[0039] Embodiment 3: On the basis of Embodiment 2, a piston chamber 13 and an oil storage tank 14 are provided on the crane main shaft 10. The piston chamber 13 and the oil storage tank 14 are communicated through a connecting hole 15. The piston chamber 13 penetrates through the moving seat 2, and a piston rod 16 is movably installed in the piston chamber 13. The lower end of the piston rod 16 is hemispherical, and the upper end of the piston rod 16 is connected to the bottom of the piston chamber 13 through a connecting spring 17. An upper annular groove 18 and a lower annular groove 19 are provided on the side wall of the piston chamber 13, and an oil guiding groove 20 is provided on the side wall of the piston rod 16.

[0040] The moving seat 2 is provided with a main oil groove 21 and a secondary oil groove 22. A set of main oil grooves 21 and secondary oil grooves 22 are symmetrically arranged. The main oil groove 21 is communicated with the lower annular groove 19. The secondary oil groove 22 is communicated with the end of the main oil groove 21, and the secondary oil groove 22 extends to the pulley mounting shaft 8. The pulley mounting shaft 8 is provided with oil outlet grooves 23. A plurality of oil outlet grooves 23 are evenly arranged, and the inner ends of the oil outlet grooves 23 are communicated with the secondary oil groove 22. A force-bearing protrusion 24 is provided at the bottom of the track groove 7. The force-bearing protrusion 24 is a rod-shaped protrusion structure with a semicircular cross-section, and the force-bearing protrusion 24 is misaligned with the traveling pulley 3. The piston rod 16 is aligned with the force-bearing protrusion 24.

[0041] When the piston rod 16 and the force-bearing protrusion 24 are in a staggered state, the piston rod 16 abuts against the bottom surface of the track groove 7. At this time, the lower end of the oil guiding groove 20 is communicated with the lower annular groove 19. When the piston rod 16 abuts against the force-bearing protrusion 24, the piston rod 16 moves upward. At this time, the upper end of the oil guiding groove 20 is communicated with the upper annular groove 18. The distance between the upper annular groove 18 and the lower annular groove 19 is greater than the length of the oil guiding groove 20. By providing the piston chamber 13 and the oil storage tank 14 on the crane main shaft 10, providing the upper annular groove 18 and the lower annular groove 19 on the side wall of the piston chamber 13, providing the oil guiding groove 20 on the side wall of the piston rod 16, and providing the force-bearing protrusion 24 at the bottom of the track groove 7, a small amount of lubricating oil is led out through the contact and separation process between the piston rod 16 and the force-bearing protrusion 24, so as to lubricate between the pulley mounting shaft 8 and the traveling pulley 3, effectively reducing structural wear and achieving the purpose of improving the service life of the structure.

[0042] The oil storage tank 14 stores liquid lubricating oil, and a lubricating oil filling port 25 is provided at the upper end position of the oil storage tank 14. The port of the lubricating oil filling port 25 is sealed by a sealing cover 26.

[0043] Although the above-described illustrative embodiments of the present application have been described so that those skilled in the art can understand the present application, the present application is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims, all inventions created using the concept of the present application are within the scope of protection.

Claims

1. A stable base for a marine crane, characterized in that: include: A base body (1), the base body (1) is fixedly mounted at the edge of a clamping plate (6) on a hull (5), a track groove (7) is provided on the base body (1), an opening groove (27) is provided on the upper side of the track groove (7), and the track groove (7) and the opening groove (27) are combined to form a convex notch structure; A movable seat (2), wherein the movable seat (2) is movably arranged in a track groove (7), and a side wall of the movable seat (2) is provided with an air avoidance groove, and a pulley mounting shaft (8) is integrally formed on the side wall of the air avoidance groove, and a crane main shaft (10) is fixedly mounted on the upper end surface of the movable seat (2), and a crane cantilever (11) is rotatably mounted on the upper side end of the crane main shaft (10) through a rotating mechanism, and a lifting mechanism (12) is mounted on the end of the crane cantilever (11); A walking pulley (3), wherein the walking pulley (3) is rotatably mounted on a pulley mounting shaft (8); A traction trolley (4), wherein the crane main shaft (10) is arranged through an opening slot (27), a connecting seat (9) is fixedly welded on the side wall of the crane main shaft (10), the traction trolley (4) is mounted on a clamping plate (6) for movement, and the connecting seat (9) is fixedly connected to the traction trolley (4) through a bolt structure.

2. A stable base for a marine crane according to claim 1, characterized in that: The height of the moving seat (2) is smaller than the depth of the track groove (7), the diameter of the walking pulley (3) is smaller than the depth of the track groove (7), and when the walking pulley (3) is actually installed, the upper side of the walking pulley (3) is higher than the upper surface of the moving seat (2), and the lower side of the walking pulley (3) is lower than the lower surface of the moving seat (2), and there is an overlapping area between the walking pulley (3) and the upper side of the track groove (7).

3. A stable base for a marine crane according to claim 2, characterized in that: The walking pulley (3) is provided with a mounting groove, which does not completely penetrate the walking pulley (3). The walking pulley (3) is mounted on the pulley mounting shaft (8) through the mounting groove. When the walking pulley (3) is actually installed, the end surface of the pulley mounting shaft (8) is arranged in contact with the bottom of the mounting groove, and at this time, the outer end surface of the walking pulley (3) is arranged in contact with the side wall of the track groove (7).

4. A stable base for a marine crane according to claim 3, characterized in that: The end surface of the pulley mounting shaft (8) is an arc-shaped surface with a convex middle portion, the outer end surface of the walking pulley (3) is an arc-shaped surface with a convex middle portion, and the inner end of the walking pulley (3) is a circular ring structure with a semicircular cross-section.

5. A stable base for a marine crane according to claim 4, characterized in that: The crane main shaft (10) is provided with a piston chamber (13) and an oil storage tank (14). The piston chamber (13) and the oil storage tank (14) are connected via a connecting hole (15). The piston chamber (13) passes through the movable seat (2), and a piston rod (16) is movably installed in the piston chamber (13). The lower side end of the piston rod (16) is arranged in a hemispherical shape, and the upper side end of the piston rod (16) is connected to the bottom of the groove of the piston chamber (13) via a connecting spring (17).

6. A stable base for a marine crane according to claim 5, characterized in that: An upper annular groove (18) and a lower annular groove (19) are provided on the side wall of the piston cavity (13), and an oil guide groove (20) is provided on the side wall of the piston rod (16).

7. A stable base for a marine crane according to claim 6, characterized in that: The movable seat (2) is provided with a main oil groove (21) and a secondary oil groove (22), and the main oil groove (21) and the secondary oil groove (22) are symmetrically arranged in a group, and the main oil groove (21) is connected to the lower annular groove (19), and the secondary oil groove (22) is connected to the end of the main oil groove (21), and the secondary oil groove (22) extends to the pulley mounting shaft (8), and the pulley mounting shaft (8) is provided with an oil outlet groove (23), and the oil outlet groove (23) is evenly arranged with a plurality of channels, and the inner side end of the oil outlet groove (23) is connected to the secondary oil groove (22).

8. A stable base for a marine crane according to claim 7, characterized in that: A force-bearing protrusion (24) is provided at the bottom of the track groove (7). The force-bearing protrusion (24) is a rod-shaped protrusion structure with a semicircular cross-section. The force-bearing protrusion (24) and the walking pulley (3) are offset, and the piston rod (16) and the force-bearing protrusion (24) are aligned.

9. A stable base for a marine crane according to claim 8, characterized in that: When the piston rod (16) and the force-bearing protrusion (24) are in a staggered state, the piston rod (16) abuts against the bottom surface of the track groove (7), and at this time, the lower side end of the oil guide groove (20) is connected to the lower annular groove (19); when the piston rod (16) abuts against the force-bearing protrusion (24), the piston rod (16) moves upward, and at this time, the upper side end of the oil guide groove (20) is connected to the upper annular groove (18), and the spacing value between the upper annular groove (18) and the lower annular groove (19) is greater than the length value of the oil guide groove (20).

10. A stable base for a ship crane according to claim 9, characterized in that: The oil storage tank (14) stores liquid lubricating oil, and a lubricating oil adding port (25) is provided at the upper end of the oil storage tank (14), and the port of the lubricating oil adding port (25) is sealed by a sealing cover (26).

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