A deck transfer trolley

Abstract

The present application relates to a kind of deck transfer trolley, including portal beam, trolley frame, lifting mechanism, balance beam and clamping jaw;Portal beam is across on deck, and can be moved on deck along the direction of ship girder;The bottom of trolley frame is arranged on the crossbar of portal beam, and can be moved along the crossbar axial direction;Lifting mechanism includes multiple telescopic components, and multiple telescopic components are distributed below the two sides of trolley frame;Balance beam is connected multiple telescopic components by top, hangs below trolley frame and crossbar, and clamping jaw is fixed on balance beam.Compared with prior art, the present application realizes XY two-dimensional plane operation on deck by the cooperation of portal beam and trolley frame, and trolley can cover all working plane;At the same time, transfer trolley is also provided with lifting mechanism, so XYZ three-dimensional space operation can be carried out, to meet the work demand, improve work efficiency.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment, and more particularly to a deck transfer trolley. Background Technology

[0002] The deck structure of an offshore platform mainly consists of panels, steel beams, support columns, and other components. During the manufacturing process, dozens of steel plates are first welded together to form a whole deck plane. Then, the installation positions of components such as steel beams and support columns are planned and drawn on the deck panel. The steel beams, support columns, and other components are then installed according to the procedures and welded and fixed to form a basic deck panel structure. Finally, multiple deck panel structures are combined and spliced ​​together and other equipment and facilities are configured to build a basic offshore platform structure.

[0003] During the aforementioned manufacturing process, specific steel sections need to be retrieved from the material storage area. In this process, the steel section number, shape, and orientation are first identified. The steel beams are then removed and transported to the designated location along the optimal route. During transport, the displacement path, orientation angle, and height of the steel sections are adjusted to avoid interference or collision with other components along the displacement path. After arriving at the designated location, the orientation angle, height, and interface dimensions of the steel sections are adjusted according to the structural manufacturing requirements, and the steel sections are assembled into their positions.

[0004] The deck structure of a typical offshore platform is tens of meters long and wide, requiring the installation and assembly of hundreds of beams. Currently, the installation is mainly carried out manually by cranes, which requires the cooperation of many people, resulting in high work intensity. If the manual hook position is not suitable, errors and rework are easy to occur, leading to low work efficiency and safety issues. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects of the prior art and provide a deck transfer trolley.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A deck transfer trolley includes a gantry beam, a trolley frame, a lifting mechanism, a balance beam, and grippers;

[0008] The portal beam spans across the deck and can move along the direction of the ship's main beam on the deck;

[0009] The bottom of the trolley frame is mounted on the crossbar of the gantry beam and can move axially along the crossbar;

[0010] The lifting mechanism includes multiple telescopic components, which are distributed on both sides of the lower part of the trolley frame;

[0011] The balance beam is connected with multiple telescopic assemblies through the top, suspended below the trolley frame and the crossbar, and the clamping jaw is fixed on the balance beam.

[0012] In another preferred example, the telescopic assembly comprises a lifting motor, an outer tube, an inner tube and a lead screw, one end of the lead screw is connected with the lifting motor at the top of the outer tube, the inner tube is arranged in the outer tube, and the inner tube is connected with the moving seat of the lead screw, and the bottom of the inner tube is hinged to the top surface of the balance beam.

[0013] In another preferred example, the telescopic assembly is three, the bottoms of the three telescopic assemblies are hinged to the top surface of the balance beam through a spherical hinge, the three telescopic assemblies are distributed as three vertices of a triangle, and the clamping jaw is suspended and fixed to the bottom of the balance beam through a rotating module.

[0014] In another preferred example, the rotating module comprises a rotating drive motor, a rotating frame and a rotating support, the rotating support is cylindrical and fixed to the bottom of the balance beam, the rotating frame is sleeved on the rotating support, and the rotating drive motor drives the rotating frame to rotate around the rotating support.

[0015] In another preferred example, the rotating drive motor is fixed to the balance beam, the output shaft of the rotating drive motor is connected with a rotating gear, the outer ring of the rotating frame is fixed with an annular rack, and the annular rack meshes with the rotating gear on the output shaft.

[0016] In another preferred example, the foot of the gantry beam is driven to move along a guide rail on the deck by a driving mechanism, and the guide rail is arranged along the direction of the main beam.

[0017] The rear end of the driving mechanism is fixed with a sliding block, and the front end of the foot is provided with a horizontal sliding rail perpendicular to the guide rail, and the horizontal sliding rail is used for abutting the sliding block.

[0018] In another preferred example, the driving mechanism comprises a bracket, and a guide wheel module and a driving module mounted on the bracket, the guide wheel module and the driving module respectively clamp the guide rail from both sides, and the horizontal sliding rail is fixed to the bracket.

[0019] In another preferred example, the driving module comprises a trolley motor and a driving gear connected with the output shaft of the trolley motor, one side of the guide rail is provided with a straight rack, and the driving gear and the straight rack are meshed.

[0020] In another preferred example, the guide wheel module comprises an eccentric shaft and a guide wheel, the eccentric shaft comprises a first shaft rod and a second shaft rod, the second shaft rod is fixed to the bottom of the first shaft rod, and the axes of the first shaft rod and the second shaft rod are arranged staggeredly, and the guide wheel is fixed to the second shaft rod for contacting the guide rail.

[0021] In another preferred example, the guide wheel module further comprises an anti-rotation plate, the anti-rotation plate is provided with a geometrically shaped through hole, the top of the first shaft rod is provided with a column body matched with the shape of the through hole, and after the through hole of the anti-rotation plate is connected with the column body, one side edge of the anti-rotation plate abuts against the support to limit the rotation of the anti-rotation plate.

[0022] The outer edge of the anti-rotation plate is a first regular polygon, the through hole of the anti-rotation plate is a second regular polygon, and the first regular polygon and the second regular polygon are coaxially arranged.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] 1. The present application relates to a transfer trolley, which realizes XY two-dimensional plane operation on a deck through the cooperation of a portal beam and a trolley frame, and can cover the entire working plane; meanwhile, the transfer trolley is also provided with a lifting mechanism, so that XYZ three-dimensional space operation can be performed, work requirements are met, and work efficiency is improved.

[0025] 2. The posture adjusting structure is composed of telescopic assemblies and a balance beam, and the clamping jaw is connected to the balance beam through a rotating module; when the posture adjusting structure is in action, the three telescopic assemblies can synchronously or asynchronously drive the balance beam, and the rotating module drives the clamping jaw to rotate, so that the clamping jaw can actively adjust the posture and angle in a large range, multi-angle grabbing of the steel beam is realized, the demand for deck building of the offshore platform is met, and good load-bearing capacity is achieved.

[0026] 3. The rotating module adopts a nested structure of a rotating frame and a rotating support, and then the rotating support and the rotating drive motor are connected through meshing of rotating gears, so that the structure is simple, reliable and stable.

[0027] 4. The drive mechanism drives the supporting leg of the portal beam to move along the guide rail, and a horizontal sliding rail and a sliding block are arranged between the drive mechanism and the supporting leg; when the supporting leg is in a loaded or unloaded state, the gap between the supporting leg and the guide rail changes, the drive mechanism moves relative to the supporting leg through the horizontal sliding rail and the sliding block, and the original precision of the guide rail is still maintained, so that normal work is ensured.

[0028] 5. The drive module moves through the cooperation of the drive gear structure and the guide wheel driving mechanism, and the movement is smooth and stable.

[0029] 6、The eccentric shaft is arranged in the guide wheel module to fix the guide wheel, the gap between the guide wheel and the driving module can be adjusted by rotating the eccentric shaft, the most suitable gap between the guide wheel and the driving module and the guide rail is ensured, the precision of the driving module is ensured, and the intelligent group door frame can be applied.

[0030] 7、The anti-rotation plate is arranged in the guide wheel module, the eccentric shaft after adjustment can be locked to avoid the change of the rotation angle, the reliability is high; meanwhile, the outer edge and the through hole of the anti-rotation plate adopt the coaxial regular polygon, the angle of rotation can be evenly subdivided, and the angle fine adjustment and fixation of the eccentric shaft are considered. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the application.

[0032] Figure 2 It is a structural schematic diagram of the trolley frame, lifting mechanism and clamping jaw.

[0033] Figure 3 It is a structural schematic diagram of the lifting mechanism.

[0034] Figure 4 It is a structural schematic diagram of the rotating module.

[0035] Figure 5 It is a front view schematic diagram of the working state of the workpiece gravity center outside the triangular area.

[0036] Figure 6 It is a side view schematic diagram of the working state of the workpiece gravity center outside the triangular area.

[0037] Figure 7 It is a structural schematic diagram of the bottom of the intelligent door frame support.

[0038] Figure 8 It is a side view structural schematic diagram of the bottom of the intelligent door frame support.

[0039] Figure 9 It is a front view structural schematic diagram of the bottom of the intelligent door frame support.

[0040] Figure 10 It is an A-A sectional view schematic diagram of Figure 9 .

[0041] Figure 11 It is a structural schematic diagram of the eccentric shaft.

[0042] Figure 12 It is a structural schematic diagram of the anti-rotation plate.

[0043] REFERENCE SIGNS:

[0044] 1-gantry beam; 11-cross bar; 12-support;

[0045] 2-carriage frame; 21-carriage wheel;

[0046] 3-lifting mechanism; 31-telescopic assembly; 311-lifting motor; 312-outer tube; 313-inner tube; 314-screw rod;

[0047] 4-balancing beam;

[0048] 5-clamping jaw;

[0049] 6-rotation module; 61-rotation driving motor; 62-rotation frame; 63-rotation support; 64-rotation gear; 65-circular rack;

[0050] 7-driving mechanism; 71-carriage motor; 72-driving gear; 73-eccentric shaft; 731-first shaft rod; 732-second shaft rod; 733-connection part; 734-column; 735-threaded column; 74-guide wheel; 75-anti-rotation plate; 76-bracket; 761-top plate; 762-bottom plate; 763-side plate;

[0051] 8-guide rail; 81-linear rack;

[0052] 9-sliding block;

[0053] 10-horizontal slide rail. DETAILED DESCRIPTION

[0054] Unless otherwise defined, technical or scientific terms used in the present specification and claims shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0055] All numerical values recited herein including those in any accompanying claims, which are presented as a range between two values, are intended to include every value and range within the range unless otherwise indicated.

[0056] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0057] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0058] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0059] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that, in order to keep the description of these embodiments brief, this specification cannot provide a detailed description of all features of the actual embodiments.

[0060] Example

[0061] like Figure 1 As shown, this embodiment provides a deck transfer trolley, including a gantry beam 1, a trolley frame 2, a lifting mechanism 3, a balance beam 4, and grippers 5. The gantry beam 1 spans across the deck, and its two supports 12 are respectively connected to guide rails 8 located on the deck. The guide rails 8 are arranged along the direction of the main beam, allowing the gantry beam 1 to move on the deck along the direction of the main beam. The bottom of the trolley frame 2 is mounted on the crossbar 11 of the gantry beam 1 via small wheels 21. The small wheels 21 are connected to a motor, and the trolley frame 2 can move axially along the crossbar 11 under the drive of the motor. Thus, the transfer trolley achieves XY two-dimensional plane operation on the deck through the cooperation of the gantry beam 1 and the trolley frame 2, and the transfer trolley can cover the entire working plane. The lifting mechanism 3 includes multiple telescopic components 31, which are distributed on both sides of the bottom of the trolley frame 2; the balance beam 4 is suspended below the trolley frame 2 and the crossbar 11 by connecting multiple telescopic components 31 at the top, and grippers 5 are fixed on the balance beam 4 for gripping steel beams. The lifting mechanism 3 enables the transfer trolley to perform XYZ three-dimensional spatial operations, meeting work requirements and improving work efficiency.

[0062] like Figure 2As shown, the telescopic components 31 consist of three beams; the balance beam 4 adopts a T-shaped structure, with the bottoms of the three telescopic components 31 hinged to the three ends of the T-shaped top surface of the balance beam 4, forming a triangular structure. The middle part of the balance beam 4 is annular, and a rotating module 6 is set below the annular position, with the gripper 5 suspended below the rotating module 6. The telescopic components 31 are hinged to the balance beam 4 using ball joints, and a pin-load sensor is also provided on the ball joint to measure the load at the ball joint. The ball joint structure, combined with the three triangularly distributed lifting beams, enables the balance beam 4 to achieve full-degree-of-freedom angle adjustment. The three telescopic components 31 can drive the balance beam 4 synchronously or asynchronously to adjust its attitude.

[0063] like Figure 3 As shown, the telescopic assembly 31 can generally adopt a commercially available telescopic rod structure, and the specific design is not limited. In this embodiment, each telescopic assembly 31 includes a lifting motor 311, an outer tube 312, an inner tube 313, and a lead screw 314. The top of the lead screw 314 is fixedly connected to the lifting motor 311 located at the top of the outer tube 312. The inner tube 313 is slidably disposed inside the outer tube 312, and the top of the inner tube 313 is connected to the movable seat of the lead screw 314, while the bottom of the inner tube 313 is hinged to the balance beam 4. When the lifting motor 311 is working, it drives the lead screw 314 to move. The movable seat of the lead screw 314 moves up and down along the screw, thereby causing the inner tube 313 to extend and retract at the lower end of the outer tube 312, thus realizing the telescopic function.

[0064] like Figure 4 As shown, the rotating module 6 adopts a nested structure of a rotating frame 62 and a rotating support 63. The rotating support 63 and the rotating drive motor 61 are connected by a rotating gear 64. This structure is simple, reliable, and has good stability. Specifically, the rotating module 6 includes a rotating drive motor 61, a rotating frame 62, and a rotating support 63. The rotating support 63 is cylindrical and is fixed to the lower part of the annular shape of the balance beam 4 by bolts. The rotating frame 62 is fitted onto the rotating support 63 and can rotate around the rotating support 63. The fitting method is that the inner ring of the rotating frame 62 has a first annular groove, and the outer ring of the rotating support 63 has a second annular groove corresponding to the first annular groove. The two annular grooves are joined to form an annular space with a circular cross-section, and ball bearings are placed in the annular space. This structure can have good load-bearing capacity while meeting the rotation requirements. A mounting groove is provided on the balance beam 4, and the rotating drive motor 61 is fixed in the mounting groove with its output shaft vertically downward. The output shaft of the rotary drive motor 61 is connected to a rotary gear 64, and an annular rack 65 is fixed to the outer ring of the rotating frame 62 for meshing with the rotary gear 64 on the output shaft. Thus, when the rotary drive motor 61 rotates, it drives the annular rack 65 to rotate the rotating frame 62 through the rotary gear 64, and the grippers fixed on the rotating frame 62 also rotate accordingly.

[0065] In working, the three telescopic assemblies 31 can drive the balance beam 4 synchronously or asynchronously, and the rotating module 6 drives the clamping jaw to rotate, so that the clamping jaw can actively adjust the posture and angle in a large range, realize multi-angle grabbing of the steel beam, and meet the demand of building the deck of the offshore platform.

[0066] In the embodiment, because the three telescopic assemblies 31 are distributed in a triangle, the three supporting points determine a plane, so that the same workpiece can be stably lifted. Meanwhile, the triangular distribution of the telescopic assemblies 31 allows the large deviation of the gravity center of the workpiece: when the gravity center is in the triangular area, the three telescopic assemblies 31 are all in tension; as shown in Figure 5 and Figure 6 shown, when the gravity center is outside the triangular area, two sets of telescopic assemblies 31 are in tension, and one set of telescopic assemblies 31 is in compression.

[0067] In the embodiment, the pin shaft load sensor is arranged on the spherical hinge between the telescopic assembly 31 and the balance beam 4, which can measure the force of each hinge point, and can also comprehensively calculate the size of the total load and the position of the gravity center of the load. The specific calculation method is the existing conventional calculation process, so it is not expanded.

[0068] As shown in Figure 7 , the foot 12 of the portal beam is driven by the driving mechanism 7 to move along the guide rail 8 on the deck. As shown in Figure 8 , the rear end of the driving mechanism 7 is fixed with a sliding block 9, and the front end of the foot 12 is provided with a horizontal slide rail 10 perpendicular to the guide rail 8, and the driving mechanism 7 and the foot 12 are connected by the sliding block 9 and the horizontal slide rail 10. Therefore, when the gap between the foot 12 and the guide rail 8 changes in the working and non-working states, the driving mechanism 7 moves relative to the foot 12 through the horizontal slide rail 10 and the sliding block 9, and still maintains the original accuracy with the guide rail 8, which can ensure normal work. In another preferred embodiment, the horizontal slide rail 10 is provided with first concave-convex patterns, and the surface of the sliding block 9 is provided with second concave-convex patterns. When the horizontal slide rail 10 connects the sliding block 9, the first concave-convex patterns are embedded in the second concave-convex patterns, which improves the smoothness and stability of the connection between the two.

[0069] As shown in Figure 9 and Figure 10As shown, the driving mechanism 7 comprises a bracket 76, and a guide wheel module and a driving module mounted on the bracket 76, which clamps the guide rail 8 from both sides respectively. The bracket 76 comprises a side plate 763, a top plate 761 and a bottom plate 762, the front side of the side plate 763 is connected with the top plate 761 and the bottom plate 762, and the top plate 761 and the bottom plate 762 are arranged in parallel. The rear side of the side plate 763 is provided with a sliding block 9 for docking the supporting leg 12. Each guide wheel module comprises an eccentric shaft 73, a guide wheel 74 and an anti-rotation plate 75, the eccentric shaft 73 is fixed on the top plate 761 and the bottom plate 762, the guide wheel 74 is mounted at the bottom of the eccentric shaft 73, and the anti-rotation plate 75 is mounted at the top of the eccentric shaft 73. The driving module comprises a trolley motor 71 and a driving gear 72 connected with the output shaft of the trolley motor 71, and one side of the guide rail 8 is provided with a straight rack 81, the driving gear 72 is engaged with the straight rack 81. Thus, the guide rail 8 is clamped between the guide wheel 74 and the driving gear 72, and when the trolley motor 71 is started, the whole driving mechanism moves on the guide rail 8.

[0070] As shown in the drawings, Figure 11 The eccentric shaft 73 comprises a first shaft 731 and a second shaft 732, the second shaft 732 is fixed at the bottom of the first shaft 731, and the axes of the first shaft 731 and the second shaft 732 are arranged staggered. At the same time, the diameter of the second shaft 732 is larger than that of the first shaft 731, so that a bottom step surface is formed between the second shaft 732 and the first shaft 731. A connecting portion 733, a geometric column 734 and a threaded column 735 are sequentially arranged from bottom to top at the top of the first shaft 731. The diameter of the connecting portion 733 is smaller than that of the first shaft 731, so that a top step surface is formed between the connecting portion 733 and the top of the first shaft 731. Two mounting holes are arranged on the top plate 761 and the bottom plate 762, the eccentric shaft 73 is fixed in the mounting holes, and the eccentric shaft 73 is fixed in the mounting holes. Figure 9 and Figure 11 Specifically, the first shaft 731 sequentially passes through the mounting holes of the bottom plate 762 and the top plate 761, at this time the bottom step surface abuts against the bottom surface of the bottom plate 762 for limiting; at the same time, the connecting portion 733 of the first shaft 731 penetrates into the mounting hole of the top plate 761. It should be noted that the height of the connecting portion 733 is slightly smaller than the thickness of the top plate 761, and the geometric column 734 and the threaded column 735 protrude from the top of the top plate 761. The anti-rotation plate 75 is first sleeved on the column 734, and then a nut is screwed on the threaded column 735 to fix the whole eccentric shaft 73 and the bracket 76. The anti-rotation plate 75 is provided with a through hole matched with the geometric column 734, and one side edge of the anti-rotation plate 75 can abut against the side plate 763 to avoid its own rotation. Therefore, the anti-rotation plate 75 can lock the adjusted eccentric shaft 73 to avoid the change of the rotation angle. The guide wheel 74 is a ring-shaped guide wheel 74, which is sleeved on the outer ring of the second shaft 732. The ring-shaped guide wheel 74 has simple structure and good stability.

[0071] In use: by setting eccentric shaft 73 to fix guide wheel 74, by rotating the angle of eccentric shaft 73 can adjust the gap between the guide wheel 74 and the drive gear 72, that is, to adjust the gap between the guide wheel 74, drive gear 72 and guide rail 8, so as to achieve the most appropriate adjustment of the gap, ensure the installation accuracy. After the gap adjustment is completed, the anti-rotation plate 75 is sleeved on the column 734 and then the nut is tightened to fix the position.

[0072] In this embodiment, the outer edge and through hole of the anti-rotation plate 75 adopt coaxial regular polygons. This shape structure can uniformly subdivide the angle of rotation, and also take into account the angle fine adjustment and fixation of the eccentric shaft 73. For example, as shown in Figure 12 The outer edge of the anti-rotation plate 75 is a first regular polygon, and the number of edges is 8; the through hole of the anti-rotation plate 75 is a second regular polygon, and the number of edges is 6; the regular octagon and the regular hexagon have a certain deviation angle. Thus, when each side of the regular octagon abuts against the side plate 763, the internal eccentric shaft 73 can have 6 angle adjustments, so that the total of 48 combinations of the inside and outside can uniformly subdivide the circumference and the eccentricity, and take into account the stability and accuracy.

[0073] The preferred embodiments of the present application are described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and changes without creative work based on the concept of the present application. Therefore, any technical solutions obtained by logical analysis, reasoning or limited experiments based on the prior art within the concept of the present application should be within the protection scope determined by the claims.

Claims

1. A deck transfer dolly, characterized by, The crane beam (1), the trolley frame (2), the lifting mechanism (3), the balance beam (4) and the clamping jaw (5); The crane beam (1) is arranged on the deck and is movable along the deck in the direction of the main beam of the ship; The bottom of the trolley frame (2) is arranged on the crossbar (11) of the crane beam (1) and is axially movable along the crossbar (11); The lifting mechanism (3) comprises a plurality of telescopic assemblies (31) arranged below the two sides of the trolley frame (2); The balance beam (4) is connected to the plurality of telescopic assemblies (31) at the top and is suspended below the trolley frame (2) and the crossbar (11), and the clamping jaw (5) is fixed on the balance beam (4); The foot (12) of the crane beam (1) is movable along the guide rail (8) on the deck by the driving mechanism (7), the driving mechanism (7) comprises a bracket (76), a guide wheel module and a driving module mounted on the bracket (76), the guide wheel module and the driving module clamp the guide rail (8) from two sides respectively; the guide wheel module comprises an eccentric shaft (73), a guide wheel (74) and an anti-rotation plate (75), the anti-rotation plate (75) is provided with a geometrically shaped through hole, the eccentric shaft (73) is provided with a column (734) matched with the shape of the through hole, the through hole of the anti-rotation plate (75) is connected to the column (734), and one side edge of the anti-rotation plate (75) abuts against the bracket (76) to limit the rotation of the anti-rotation plate (75); the outer edge of the anti-rotation plate (75) is a first regular polygon, the through hole of the anti-rotation plate (75) is a second regular polygon, the first regular polygon and the second regular polygon are coaxially arranged, and the guide wheel (74) is fixed to the eccentric shaft (73); the bracket (76) comprises a side plate (763), a top plate (761) and a bottom plate (762), the front side of the side plate (763) is connected to the top plate (761) and the bottom plate (762) which are parallel to each other, and the rear side of the side plate (763) is provided with a sliding block (9) for abutting against the foot (12); the eccentric shaft (73) comprises a first shaft rod (731), the first shaft rod (731) vertically penetrates the top plate (761) and the bottom plate (762), and one side edge of the anti-rotation plate (75) abuts against the side plate (763).

2. A deck transfer dolly according to claim 1, characterized in that The telescopic assembly (31) comprises a lifting motor (311), an outer tube (312), an inner tube (313) and a lead screw (314), one end of the lead screw (314) is connected to the lifting motor (311) arranged at the top of the outer tube (312), the inner tube (313) is arranged in the outer tube (312), and the inner tube (313) is connected to the moving seat of the lead screw (314), and the bottom of the inner tube (313) is hingedly connected to the balance beam (4).

3. The deck transfer dolly of claim 1, wherein, The telescopic assembly (31) is three, the bottoms of the three telescopic assemblies (31) are hingedly connected to the top surface of the balance beam (4), the three telescopic assemblies (31) are distributed in the three vertices of a triangle, and the clamping jaw (5) is suspended and fixed to the bottom of the balance beam (4) by the rotating module (6).

4. A deck transfer dolly according to claim 3, characterized in that The rotating module (6) comprises a rotating driving motor (61), a rotating frame (62) and a rotating support (63), the rotating support (63) is cylindrical and fixed to the bottom of the balance beam (4), the rotating frame (62) is sleeved on the rotating support (63), and the rotating driving motor (61) drives the rotating frame (62) to rotate around the rotating support (63).

5. A deck transfer dolly according to claim 4, wherein The rotating driving motor (61) is fixed to the balance beam (4), the output shaft of the rotating driving motor (61) is connected with a rotating gear (64), and the outer ring of the rotating frame (62) is fixed with an annular rack (65); the annular rack (65) is engaged with the rotating gear (64) on the output shaft.

6. The deck transfer dolly of claim 1, wherein, The guide rail (8) is arranged along the direction of the main beam; The rear end of the driving mechanism (7) is fixed with a sliding block (9), the front end of the supporting leg (12) is provided with a horizontal sliding rail (10) perpendicular to the guide rail (8), and the horizontal sliding rail (10) is used for abutting the sliding block (9).

7. A deck transfer dolly according to claim 6, wherein The horizontal sliding rail (10) is fixed to the support (76).

8. A deck transfer dolly according to claim 7, characterized in that The driving module comprises a trolley motor (71) and a driving gear (72) connected with the output shaft of the trolley motor (71), one side of the guide rail (8) is provided with a straight rack (81), and the driving gear (72) is engaged with the straight rack (81).

9. The deck transfer dolly of claim 7, wherein, The eccentric shaft (73) comprises a second shaft rod (732), the second shaft rod (732) is fixed to the bottom of the first shaft rod (731), the axis lines of the first shaft rod (731) and the second shaft rod (732) are arranged in a staggered mode, and the guide wheel (74) is fixed to the second shaft rod (732) and used for contacting the guide rail (8).

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