A bracket device for roll-on / roll-off ships

Abstract

The present invention relates to the technical field of ship bracket equipment, and in particular to a roll-on / roll-off ship bracket device, comprising a load-bearing bracket, a bracket beam arranged on the front and rear sides of the load-bearing bracket, a side arc bracket arranged above the bracket beam, a receiving block arranged on the lateral sides of the side arc bracket, a middle arc bracket arranged in the middle of the top surface of the load-bearing bracket, and a linear motion execution device for driving the side arc bracket on the receiving block to move up and down, wherein the linear motion execution device adjusts the cone-shaped petal tower to move up and down, so that the tower is parallel to the top surface of the load-bearing bracket, and the bottom surface of the tower will contact and fit with the various middle arc brackets on the top surface of the load-bearing bracket. This structure supports the middle position of the tower and has better lateral support, which solves the technical problem that the existing bracket supports the front and rear end positions of the cone-shaped petal tower, resulting in the risk of side slipping and falling when the ship is transported on a bumpy road section, and the ship is prone to sliding back and forth when it stops suddenly.

Description

Technical Field

[0001] The present invention relates to the technical field of ship bracket equipment, in particular to a roll-on / roll-off ship bracket device. Background Art

[0002] The ro-ro ship bracket device is a device used to fix and support the tower on the ro-ro ship to ensure its stability and safety during transportation. The existing ro-ro ship bracket device structure is as shown in the attached manual. Figure 1 and instructions attached Figure 2 It can be seen that the existing transport bracket includes a load-bearing bracket 1', a bracket crossbeam 2' and a side arc bracket 3'. The side arc bracket 3' of the existing transport bracket is fixed in position and usually supports the front and rear end positions of the conical barrel-shaped petal-type tower, resulting in the risk of side slipping and falling when the ship is transported on bumpy roads. When the ship stops suddenly, it is easy to slide back and forth. Summary of the Invention

[0003] Therefore, in response to the above problems, the present invention proposes a roll-on / roll-off ship bracket device, which solves the technical problems that the existing bracket supports the front and rear end positions of the conical barrel-shaped petal-type tower, resulting in the risk of side sliding and falling when the ship is transported on bumpy roads, and is prone to sliding back and forth when the ship stops suddenly.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A bracket device for roll-on / roll-off ships comprises a load-bearing bracket, a bracket crossbeam arranged on the front and rear sides of the load-bearing bracket, a side arc bracket arranged above the bracket crossbeam, a receiving block arranged on the lateral sides of the side arc bracket, a middle arc bracket arranged in the middle of the top surface of the load-bearing bracket, and a linear motion actuator for driving the side arc bracket on the receiving block to move up and down, wherein the linear motion actuator is a driving cylinder arranged on the front and rear sides of the load-bearing bracket and connected to the receiving block.

[0006] Furthermore, the top of the side arc-shaped bracket is extended with limit blocks located on the front and rear sides.

[0007] Furthermore, a fastener is provided between the middle arc-shaped bracket and the top surface of the load-bearing bracket.

[0008] Furthermore, the middle arc-shaped bracket is provided with a first through hole for a fastener to pass through, and the fastener includes an anti-seismic bolt and an anti-seismic nut, and the anti-seismic nut includes an external screw block screwed on the bottom of the anti-seismic bolt, an internal adjustment groove provided inside the external screw block, an internal screw block cooperating with the internal adjustment groove inside the external screw block, an internal threaded groove provided in the middle of the internal screw block and screwed with the anti-seismic bolt, a plurality of clamping grooves provided on the outside of the internal screw block, a clamping block rotatably provided on one side of the external screw block and clamped in the clamping groove, and an elastic sheet provided on the outside of the external screw block and in contact with the clamping block, and the top surface of the load-bearing bracket is provided with a second through hole coaxially arranged with the first through hole.

[0009] Furthermore, a polygonal protrusion is provided on a side of the external rotation block away from the internal rotation block.

[0010] Furthermore, the top surface of the load-bearing bracket is provided with an adjusting mechanism for driving each middle arc bracket to move and clamp the conical barrel-shaped petal-type tower, the adjusting mechanism includes a support block provided at the bottom of the load-bearing bracket, a first guide rod and a second guide rod provided between the support blocks, a plurality of adjusting blocks slidingly provided on the outside of the first guide rod and the second guide rod, a first screw rod provided between the support blocks, a threaded block provided in the adjusting block and screwed with the first screw rod, a driving rod rotatably provided on each adjusting block, a first motor for driving the first screw rod to rotate, and a centering mechanism provided on the top of each adjusting block and used to drive the middle arc bracket to move toward the middle, the head and tail ends of adjacent driving rods are connected to each other, and the driving rod close to the support block side is provided with a connecting rod hinged to the support block.

[0011] By adopting the above technical solution, the beneficial effects of the present invention are:

[0012] The ro-ro ship bracket device adjusts the cone-shaped lobed tower up and down by means of a linear motion actuator, so that the bottom surface of the lobed tower is parallel to the top surface of the load-bearing bracket, and then adjusts the position of each middle arc bracket, so that the bottom surface of the cone-shaped lobed tower will be in contact with and fit with each middle arc bracket on the top surface of the load-bearing bracket. This structure supports the middle position of the cone-shaped lobed tower, and the force is not concentrated at the head and tail ends of the cone-shaped lobed tower. During long-distance transportation, the cone-shaped lobed tower will not be deformed due to the unstable force caused by the support points concentrated at the head and tail ends. At the same time, due to multiple The middle arc bracket contacts the middle position of the middle arc bracket, which is better than the original contact only at the head and tail ends. This structure has better support for the conical barrel-shaped lobed tower during ship transportation. Multiple middle arc brackets contact the bottom surface of the conical barrel-shaped lobed tower, which provides better lateral support for the conical barrel-shaped lobed tower. The conical barrel-shaped lobed tower is less likely to slide back and forth, providing protection for the transportation of the conical barrel-shaped lobed tower while also improving the safety of ship transportation. It solves the technical problem that the existing bracket supports the front and rear end positions of the conical barrel-shaped lobed tower, resulting in the risk of sideways sliding and falling when the ship is transported on bumpy roads, and is prone to sliding back and forth when the ship stops suddenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an existing bracket device.

[0014] Figure 2 It is a schematic front view of the existing bracket device structure.

[0015] Figure 3 It is a left side schematic diagram of the structure of the present invention.

[0016] Figure 4 It is a schematic front view of the structure of the present invention.

[0017] Figure 5 yes Figure 4 A in the figure is an enlarged structural diagram.

[0018] Figure 6 It is a structural schematic diagram of the bracket crossbeam and the middle arc bracket of the present invention in use state.

[0019] Figure 7 yes Figure 6 The enlarged structural diagram at B in FIG.

[0020] Figure 8 It is a schematic diagram of the local cross-sectional structure of the fastener of the present invention.

[0021] Figure 9 It is a schematic top view of the structure of the regulating mechanism of the present invention in use state.

[0022] Figure 10 It is a schematic top view of the local structure of the adjustment mechanism of the present invention.

[0023] Figure 11 It is a bottom view schematic diagram of the local structure of the adjustment mechanism of the present invention.

[0024] Figure 12 It is a schematic diagram of the local structure of the adjustment mechanism of the present invention.

[0025] Figure 13 It is a structural schematic diagram of the centering mechanism of the present invention.

[0026] Figure 14 It is a left side schematic diagram of the local structure of the centering mechanism of the present invention.

[0027] Figure 15 It is a schematic diagram of the partial structure of the centering mechanism of the present invention.

[0028] Figure 16 It is a schematic diagram of the guide block structure of the present invention.

[0029] Figure 1 and Figure 2 Winning bid number:

[0030] 1', load-bearing bracket; 2', bracket beam; 3', side arc bracket.

[0031] Figure 3-Figure 16 Winning bid number:

[0032] 1. Load-bearing bracket; 2. Longitudinal support frame; 3. Bracket crossbeam; 4. Side arc bracket; 5. Adapter block; 6. Middle arc bracket; 7. Linear motion actuator; 8. Fastener; 9. Adjustment mechanism;

[0033] 401, limit block; 601, first through hole; 101, second through hole; 81, seismic bolt; 82, seismic nut; 801, external screw block; 802, internal adjustment groove; 803, internal screw block; 804, internal thread groove; 805, clamping groove; 806, clamping block; 807, elastic sheet; 808, polygonal protrusion;

[0034] 901. Support block; 902. First guide rod; 903. Second guide rod; 904. Adjustment block; 905. First lead screw; 906. Threaded block; 907. Drive rod; 908. First motor; 909. Connecting rod; 910. Support platform; 911. Transverse block; 912. Second lead screw; 913. Slider; 914. Groove; 915. Insert plate; 916. Fixed shaft; 917. Guide block; 918. V-groove; 919. Spring; 920. Driven gear; 921. Worm sleeve; 922. Worm wheel; 923. Driving gear shaft; 924. Second motor; 925. Lower groove; 926. Bevel plate. DETAILED DESCRIPTION

[0035] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0036] refer to Figures 3 to 16 The present embodiment provides a bracket device for roll-on / roll-off ships, comprising a load-bearing bracket 1, a longitudinal support frame 2 arranged in the load-bearing bracket 1, a bracket crossbeam 3 arranged on the front and rear sides of the load-bearing bracket 1, a side arc bracket 4 arranged above the bracket crossbeam 3, a receiving block 5 arranged on the lateral sides of the side arc bracket 4, a middle arc bracket 6 arranged in the middle of the top surface of the load-bearing bracket 1, and a linear motion actuator 7 for driving the side arc bracket 4 on the receiving block 5 to move up and down, wherein the linear motion actuator 7 is a driving cylinder arranged on the front and rear sides of the load-bearing bracket 1 and connected to the receiving block 5, the side arc bracket 4 is rotatably connected to the receiving block 5, the linear motion actuator 7 drives the receiving block 5 to move longitudinally, and the side arc bracket 4 connected to the receiving block 5 will also move longitudinally, which is conducive to adjusting the angle of the conical barrel-shaped petal tower on the side arc bracket 4.

[0037] The top of the side arc bracket 4 is extended with limit blocks 401 located on the front and rear sides to prevent the cone-barrel-shaped petal-type tower from sliding forward and backward from the side arc bracket 4.

[0038] A fastener 8 is provided between the middle arc bracket 6 and the top surface of the load-bearing bracket 1. A first through hole 601 for the fastener 8 to pass through is provided on the middle arc bracket 6. The fastener 8 includes an anti-seismic bolt 81 and an anti-seismic nut 82. The anti-seismic nut 82 includes an outer screw block 801 screwed on the bottom of the anti-seismic bolt 81, an inner adjustment groove 802 provided inside the outer screw block 801, and an inner screw nut 802 that cooperates with the inner adjustment groove 802 inside the outer screw block 801. The load-bearing bracket 1 includes a screw-on block 803, an internal thread groove 804 provided in the middle of the internal screw-on block 803 and screwed with the anti-seismic bolt 81, a plurality of slots 805 provided on the outside of the internal screw-on block 803, a block 806 rotatably provided on one side of the external screw-on block 801 and engaged with the slot 805, and an elastic sheet 807 provided on the outside of the external screw-on block 801 and in contact with the block 806. The top surface of the load-bearing bracket 1 is provided with a second through hole 101 coaxially arranged with the first through hole 601.

[0039] When in use, first place multiple middle arc brackets 6 according to the diameters of different positions of the conical barrel-shaped lobed tower, so that the middle arc bracket 6 always fits the bottom of the conical barrel-shaped lobed tower, and align the first through hole 601 on the middle arc bracket 6 with the second through hole 101 on the top surface of the load-bearing bracket 1.

[0040] Then, the anti-seismic bolt 81 is passed through the first through hole 601 and the second through hole 101, and then the outer screw block 801 is rotated and clamped into the bottom of the anti-seismic bolt 81 until the outer screw block 801 is clamped to the bottom of the anti-seismic bolt 81. After completion, press the clamping block 806 to separate the clamping block 806 from the clamping groove 805 on the outside of the inner screw block, and then rotate the inner screw block 803 in the opposite direction to move the inner screw block 803 in the opposite direction to the outer screw block 801. Under the action of the inner screw block 803, the outer screw block 801 moves upward to be clamped to the outer side of the anti-seismic bolt 81 The bottom surface of the thread contacts, and the external screw block 801 contacts the top surface of the external thread of the anti-seismic bolt 81, reducing the gap between the external screw block 801 and the anti-seismic bolt 81. After completion, loosen the clamping block 806. Under the action of the elastic sheet 807, the clamping block 806 will be clamped into the clamping groove 805 of the internal screw block 803, reducing the gap between the anti-seismic nut 82 and the anti-seismic bolt 81, so that the internal screw block 803 and the external screw block 801 maintain a close fit with the anti-seismic bolt 81, preventing the anti-seismic bolt 81 from loosening due to vibration during the transportation of the load-bearing bracket 1.

[0041] The outer engaging block 801 is provided with a polygonal protrusion 808 on one side away from the inner engaging block 803. Preferably, the outer engaging block 801 is hexagonal or quadrilateral, which makes it easy for an external wrench to fit into the polygonal protrusion 808 and tighten the anti-vibration nut 82.

[0042] The top surface of the load-bearing bracket 1 is provided with an adjustment mechanism 9 for driving each middle arc bracket 6 to move and clamp the conical barrel-shaped petal-type tower. The adjustment mechanism 9 includes a support block 901 provided at the bottom of the load-bearing bracket 1, a first guide rod 902 and a second guide rod 903 provided between the support blocks 901, a plurality of adjustment blocks 904 slidingly provided on the outside of the first guide rod 902 and the second guide rod 903, a first screw rod 905 provided between the support blocks 901, a threaded block 906 provided in the adjustment block 904 and screwed with the first screw rod 905, a driving rod 907 rotatably provided on each adjustment block 904, a first motor 908 for driving the first screw rod 905 to rotate, and a centering mechanism provided at the top of each adjustment block 904 and used to drive the middle arc bracket 6 to move toward the middle. The head and tail ends of adjacent driving rods 907 are connected to each other, and the driving rod 907 close to the support block 901 is provided with a connecting rod 909 hinged to the support block 901.

[0043] Before use, the conical barrel-shaped petal-shaped tower is moved up and down by the linear motion actuator 7 so that the bottom surface of the petal-shaped tower is parallel to the top surface of the load-bearing bracket 1, and then the position of each middle arc bracket 6 is adjusted, wherein the first motor 908 drives the first screw rod 905 to rotate, and the first screw rod 905 drives one of the adjustment blocks 904 to move horizontally, and each adjustment block 904 moves horizontally through the first guide rod 902 and the second guide rod 903. After the adjustment block 904 at the end position of the first screw rod 905 moves horizontally, it is driven by each drive The rod 907 and the connecting rod 909 cooperate to drive each adjustment block 904 to move at the same time, and the distance between each adjustment block 904 is enlarged and kept the same. After completion, the centering mechanism drives the middle arc bracket 6 to adjust according to the diameter size of the conical barrel-shaped lobed tower. After completion, the linear motion actuator 7 lowers the conical barrel-shaped lobed tower, and the bottom surface of the conical barrel-shaped lobed tower will contact and fit with the middle arc brackets 6 on the top surface of the load-bearing bracket 1, so that the middle arc bracket 6 at the bottom of the conical barrel-shaped lobed tower can be quickly adjusted.

[0044] The adjustment mechanism 9 is conducive to the rapid positioning of the middle arc bracket 6 at different positions of the conical barrel-shaped lobed tower. Compared with the original bracket, this structure supports the middle position of the conical barrel-shaped lobed tower, and the force is not concentrated on the head and tail ends of the conical barrel-shaped lobed tower. When the ship transports the conical barrel-shaped lobed tower over long distances, the conical barrel-shaped lobed tower will not be deformed due to the uneven force caused by the support points concentrated at the head and tail ends. At the same time, since multiple middle arc brackets 6 are in contact with the middle position of the conical barrel-shaped lobed tower, it is better than the original contact only at the head and tail ends. This structure has better support for the conical barrel-shaped lobed tower during transportation by ship, is less likely to slide sideways and fall off when transported on bumpy roads, and is not easy to slide forward when the ship stops suddenly. It provides protection for the transportation of the conical barrel-shaped lobed tower while also improving transportation safety.

[0045] The centering mechanism includes a support platform 910 provided on the top of the adjustment block 904, a transverse block 911 slidably provided on both sides of the support platform 910, a second screw rod 912 rotatably provided in the middle of the support platform 910, a slider 913 rotatably provided in the transverse block 911 and engaged with the outer thread of the second screw rod 912, a groove 914 provided on the top of the slider 913, an inserting plate 915 slidably provided on the top of the transverse block 911 and capable of being inserted into the groove 914, a fixed shaft 916 fixed in the middle of the inserting plate 915, A guide block 917 that slides laterally in the middle of the transverse block 911, a V-groove 918 is provided in the middle of the guide block 917 and cooperates with the fixed shaft 916, and a spring 919 is provided on the top of the transverse block 911. The thread directions of the second screw rod 912 on both sides are opposite. The bottom of the middle arc bracket 6 is connected to the transverse block 911. One side of the guide block 917 extends laterally through the support surface of the middle arc bracket 6. A power mechanism for driving the second screw rod 912 to rotate is provided in the middle of the second screw rod 912.

[0046] The power mechanism includes: a driven gear 920 provided in the middle of the second screw rod 912, the adjustment mechanism 9 also includes a worm sleeve 921 provided on the side of the adjustment block 904 away from the first guide rod 902, a worm wheel 922 provided on the top of the adjustment block 904 and screwed with the worm sleeve 921, and a driving gear shaft 923 fixed on one side of the worm, the outer side of the second guide rod 903 passes through the worm sleeve 921 and the second guide rod 903 rotates to drive the worm sleeve 921 to rotate, the driving gear shaft 923 cooperates with the driven gear 920, and a second motor 924 for driving the second guide rod 903 to rotate is provided on one side of the second guide rod 903, the V-groove 918 is provided with a lower groove 925 close to the side of the driven gear 920, and the V-groove 918 is located in the lower groove 925 and is plugged with a bevel piece 926.

[0047] When the position of the middle arc bracket 6 needs to be adjusted, the second motor 924 drives the second guide rod 903 to rotate. During the rotation of the second guide rod 903, the worm sleeve 921 and the worm wheel 922 can synchronously drive the driving gear shaft 923 to rotate. The rotation of each driving gear shaft 923 drives the driven gear 920 to rotate. The driven gear 920 drives the second screw rod 912 to rotate. The second screw rod 912 drives the transverse movement block 911 to move toward the position of the cone barrel-shaped petal tower. The middle arc bracket 6 moves to the position aligned with the cone. The outer side of the barrel-shaped petal tower is fitted, and the guide block 917 in the middle arc bracket 6 is blocked by the conical barrel-shaped petal tower and will move in the opposite direction. The guide block 917 cooperates with the fixed shaft 916 through the V-shaped groove 918, and the fixed shaft 916 moves to the upper right side of the V-shaped groove 918 and drives the insert plate 915 to move upward. At this time, the insert plate 915 is separated from the slider 913, and the slider 913 will stop moving and rotate in place under the action of the second screw rod 912. At this time, each middle arc bracket After the second screw rod 912 stops rotating, the fixed shaft 916 will pass through the inclined piece 926 and snap into the position of the lower groove 925 under the action of the spring 919. Each slider 913 and the middle arc bracket 6 remain fixed to the conical barrel-shaped petal-shaped tower. The positions of multiple sliders 913 and the middle arc bracket 6 need to be quickly adjusted. When the positions of each slider 913 and the middle arc bracket 6 need to be reset, the second motor 924 rotates in the opposite direction, and the slider 913 moves to the position of the support platform 910. The guide block 917 contacts the support platform 910, and the guide block 917 moves to drive the plug plate 915 upward. Each slider 913 will move to the position of the support platform 910 one by one and maintain the same position for the next use. Alternatively, multiple motors can be added to the side of the second screw rod 912. Since the adjustment mechanism 9 is in a mobile state, it is difficult to drive it with a synchronous mechanism, and the equipment manufacturing cost and control difficulty will increase.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0049] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to 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 based on specific circumstances.

[0050] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0051] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0052] Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the present invention.

Claims

1. A cradle device for a roll-on / roll-off ship, characterized in that: The invention comprises a load-bearing bracket (1), a bracket crossbeam (3) provided on the front and rear sides of the load-bearing bracket (1), a side arc-shaped bracket (4) provided above the bracket crossbeam (3), a receiving block (5) provided on the lateral sides of the side arc-shaped bracket (4), a middle arc-shaped bracket (6) provided in the middle of the top surface of the load-bearing bracket (1), and a linear motion actuator (7) for driving the upper side arc-shaped bracket (4) of the receiving block (5) to move up and down, wherein the linear motion actuator (7) is a driving cylinder provided on the front and rear sides of the load-bearing bracket (1) and connected to the receiving block (5); The top surface of the load-bearing bracket (1) is provided with an adjustment mechanism (9) for driving each middle arc bracket (6) to move and clamp the conical barrel-shaped petal-type tower, and the adjustment mechanism (9) comprises a support block (901) provided at the bottom of the load-bearing bracket (1), a first guide rod (902) and a second guide rod (903) provided between the support blocks (901), a plurality of adjustment blocks (904) slidably provided outside the first guide rod (902) and the second guide rod (903), a first screw rod (905) provided between the support blocks (901), and a plurality of adjustment blocks (906) provided between the support blocks (901). 4) a threaded block (906) screwed together with the first screw rod (905), a driving rod (907) rotatably provided on each adjusting block (904), a first motor (908) for driving the first screw rod (905) to rotate, and a centering mechanism provided on the top of each adjusting block (904) and for driving the middle arc-shaped bracket (6) to move toward the middle, the head and tail ends of adjacent driving rods (907) being connected to each other, and a connecting rod (909) hingedly connected to the support block (901) is provided on the driving rod (907) on the side close to the support block (901).

2. The cradle device for a roll-on / roll-off ship according to claim 1, characterized in that: Limiting blocks (401) are provided on the top of the side arc-shaped bracket (4) and are located on the front and rear sides.

3. The cradle device for a roll-on / roll-off ship according to claim 1, characterized in that: A fastener (8) is provided between the middle arc-shaped bracket (6) and the top surface of the load-bearing bracket (1).

4. The cradle device for a roll-on / roll-off ship according to claim 3, characterized in that: The middle arc-shaped bracket (6) is provided with a first through hole (601) for a fastener (8) to pass through, the fastener (8) comprising an anti-seismic bolt (81) and an anti-seismic nut (82), the anti-seismic nut (82) comprising an outer screw-on block (801) screwed on the bottom of the anti-seismic bolt (81), an inner adjustment groove (802) provided inside the outer screw-on block (801), an inner screw-on block (803) cooperating with the inner adjustment groove (802) inside the outer screw-on block (801), and a screw-on nut (804) provided inside the inner screw-on block (805). The load-bearing bracket (1) comprises an internal thread groove (804) in the middle of the block (803) and screwed with the anti-seismic bolt (81), a plurality of clamping grooves (805) provided on the outside of the internal screwing block (803), a clamping block (806) rotatably provided on one side of the external screwing block (801) and clamped into the clamping groove (805), and an elastic piece (807) provided on the outside of the external screwing block (801) and in contact with the clamping block (806), and a second through hole (101) coaxially provided with the first through hole (601) is provided on the top surface of the load-bearing bracket (1).

5. The cradle device for a roll-on / roll-off ship according to claim 4, characterized in that: A polygonal protrusion (808) is provided on the side of the external rotation block (801) away from the internal rotation block (803).

6. The cradle device for a roll-on / roll-off ship according to claim 1, characterized in that: The centering mechanism comprises a support platform (910) provided on the top of the adjustment block (904), a transverse block (911) slidably provided on both sides of the support platform (910), a second screw rod (912) rotatably provided in the middle of the support platform (910), a slider (913) rotatably provided in the transverse block (911) and engaged with the outer thread of the second screw rod (912), a groove (914) provided on the top of the slider (913), an inserting plate (915) slidably provided on the top of the transverse block (911) and capable of being inserted into the groove (914), and a fixed shaft (916) fixed in the middle of the inserting plate (915). ), a guide block (917) that slides laterally in the middle of the transverse block (911), a V-shaped groove (918) provided in the middle of the guide block (917) and cooperating with the fixed shaft (916), and a spring (919) provided on the top of the transverse block (911), the second screw rod (912) has opposite thread directions on both sides, the bottom of the middle arc bracket (6) is connected to the transverse block (911), the guide block (917) extends laterally on one side through the support surface of the middle arc bracket (6), and the middle of the second screw rod (912) is provided with a power mechanism for driving the second screw rod (912) to rotate.

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