Riding wheel hydraulic supplementing and compensating mechanism for marine turntable

Abstract

The invention discloses a riding wheel hydraulic supplementing and compensating mechanism for a marine turntable, and relates to the technical field of submarine cable laying, the device comprises a base, a hydraulic driving unit, a supporting assembly and a riding wheel assembly, and the lower end of the hydraulic driving unit is connected with the base. The supporting wheel hydraulic supplementing and compensating mechanism can adaptively drive the supporting assembly and the supporting wheel assembly to conduct angle adjustment according to the load change transmitted by the rotating disc, impact generated when the supporting wheel assembly passes through a base plate gap in the bottom of the rotating disc composed of a plurality of base plate pieces can be accurately buffered, and vibration and shaking caused by rigid contact are avoided; meanwhile, a first riding wheel and a second riding wheel are rotationally connected to a supporting frame of the riding wheel assembly side by side, the wheel faces of the first riding wheel and the second riding wheel jointly form a continuous curved surface for supporting the rotary disc, and the riding wheel assembly and the rotary disc can always keep a stable supporting contact state in cooperation with self-adaptive adjustment of the hydraulic driving unit; and the operation reliability and the service life of the welding type turntable in submarine cable laying operation are greatly improved and prolonged.

Description

Technical Field

[0001] This invention relates to the field of submarine cable laying technology, and in particular to a hydraulic supplementary compensation mechanism for a ship turntable. Background Technology

[0002] In submarine cable laying operations, the large turntable, the core equipment of the cable-laying vessel, undertakes the critical task of retrieving and laying the cable. This turntable can reach tens of meters in diameter and bear a weight exceeding ten thousand tons, traditionally employing a bolted assembly structure. However, under the long-term exposure to the complex marine corrosive environment and immense loads, bolted connections are prone to misalignment and corrosion, affecting structural integrity and operational safety. Therefore, welded integral turntables have gradually been adopted. Through welding, they prevent loosening of connections, significantly improving structural strength and stability, and have become the mainstream design for large submarine cable-laying vessels.

[0003] Although the welded turntable solves the inherent defects of the bolted structure, its bottom support and force transmission pads are still made of multiple steel plates welded and fixed to the bottom surface of the turntable, inevitably resulting in seams between adjacent pads. When the rigid rollers under the turntable pass through these gaps during rotational support, significant impact and vibration are generated. This periodic vibration not only causes unstable turntable operation, affecting the uniformity and accuracy of cable release, but may also be transmitted to the ship's structure, accelerating equipment wear over time. Therefore, how to effectively eliminate or buffer the rigid impact caused by the rollers passing through the pad seams has become an urgent technical problem to be solved in improving the smoothness and reliability of the welded turntable operation. Summary of the Invention

[0004] This invention provides a hydraulic supplementary compensation mechanism for a marine turntable, which can solve the problem in the prior art that when the rigid support roller under the turntable passes through these gaps during the rotational support process, it will generate obvious impact and vibration.

[0005] A hydraulic compensation mechanism for a marine turntable includes a base, a hydraulic drive unit, a support assembly, and a roller assembly. The lower end of the hydraulic drive unit is connected to the base, and its upper end is connected to the support assembly. The hydraulic drive unit is used to drive the support assembly to adjust its angle relative to the base. The roller assembly is rotatably connected to the support assembly. The roller assembly includes a support frame and a first roller and a second roller arranged side by side. Both the first roller and the second roller are rotatably connected to the top of the support frame, and their wheel surfaces together form a continuous curved surface for supporting the turntable. The hydraulic drive unit is used to drive the support assembly and the roller assembly to adaptively adjust according to the load changes transmitted by the turntable, so as to buffer the impact generated when the roller passes through the gap of the bottom pad plate of the turntable.

[0006] The present invention provides a hydraulic supplementary compensation mechanism for a marine turntable, which, compared with the prior art, has the following beneficial effects, but is not limited to: The hydraulic compensation mechanism for the support rollers of a marine turntable is connected to the base at the lower end and to the support assembly at the upper end via a hydraulic drive unit. It adaptively adjusts the angles of the support assembly and support roller assembly according to changes in the load transmitted by the turntable. This precisely buffers the impact generated when the support roller assembly passes through the gaps in the bottom pads of the turntable, which consist of multiple pad plates, preventing vibration and shaking caused by rigid contact. Simultaneously, the support frame of the support roller assembly has a first and a second support roller rotatably connected side-by-side. The surfaces of both rollers together form a continuous curved surface supporting the turntable. Combined with the adaptive adjustment of the hydraulic drive unit, this ensures that the support roller assembly and the turntable maintain a stable supporting contact state. This effectively improves the smoothness of the turntable's operation, ensures the uniformity and accuracy of cable release, and prevents the transmission of impact vibrations to the ship's structure, reducing equipment wear and significantly improving the operational reliability and service life of the welded turntable in submarine cable laying operations.

[0007] Furthermore, the hydraulic drive unit includes a hydraulic cylinder, a hydraulic pump station, a control valve group, and a pressure sensor. The cylinder body of the hydraulic cylinder is hinged to the base, and the end of its piston rod is hinged to the support assembly. The pressure sensor is used to detect the pressure of the hydraulic cylinder. The control valve group adjusts the oil supply from the hydraulic pump station to the hydraulic cylinder according to the signal from the pressure sensor to dynamically compensate for the support force.

[0008] Furthermore, the surfaces of the first and second support rollers are conical, and their minor diameter ends are positioned relatively close to each other.

[0009] Furthermore, the rotation axes of the first and second rollers are both inclined toward the rotation center of the turntable, so that the continuous curved surface matches the motion trajectory of the bottom of the turntable.

[0010] Furthermore, the support assembly includes a support rod and a protective shell. The lower end of the support rod is connected to the base, and the protective shell is connected to the support rod via a first rotating shaft. The upper end of the hydraulic drive unit is hinged to the drive end of the protective shell.

[0011] Furthermore, the interior of the protective shell is rotatably connected to the support frame via a second rotating shaft.

[0012] Furthermore, the support frame is provided with a first mounting groove and a second mounting groove, the first support roller is connected to the first mounting groove through a connecting shaft, and the second support roller is connected to the second mounting groove through a connecting shaft.

[0013] Furthermore, the first and second support rollers have the same structure, and the diameter of the side of the roller closest to the rotation center of the turntable is smaller than the diameter of the other side.

[0014] Furthermore, the connecting shaft is inclinedly connected to the support frame, such that the axes of the first and second rollers face the axis of the turntable.

[0015] Furthermore, the first and second rollers are provided with mounting holes that are adapted to the connecting shaft, and the diameter of the mounting hole on the side closer to the rotation center of the turntable is smaller than the diameter on the other side. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the hydraulic supplementation and compensation mechanism for a support roller according to an embodiment of the present invention; Figure 2 This is a front view of a hydraulic supplementary compensation mechanism for a support roller according to an embodiment of the present invention; Figure 3 This is a side view of a hydraulic supplementary compensation mechanism for a support roller according to an embodiment of the present invention; Figure 4 This is a top view of a hydraulic supplementary compensation mechanism for a support roller according to an embodiment of the present invention; Figure 5 This is an internal schematic diagram of the hydraulic supplementary compensation mechanism for the support roller according to an embodiment of the present invention; Figure 6 for Figure 5 A cross-sectional view of the first support roller; Figure 7 This is a schematic diagram of the turntable in the action of the hydraulic supplementation and compensation mechanism for the support roller according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the installation of the hydraulic supplementary compensation mechanism for the support roller according to an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Base; 2. Support rod; 3. Protective shell; 4. Hydraulic cylinder; 5. Roller assembly; 6. First rotating shaft; 7. Pad plate; 8. Second rotating shaft; 9. Turntable; 51. Support frame; 52. First roller; 53. Second roller; 54. Connecting shaft; 55. Mounting hole; 511. First mounting groove; 512. Second mounting groove. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0019] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] It should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, parts, or groups of features, integers, steps, or parts.

[0023] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0024] like Figure 1-5 As shown in the figure, an embodiment of the present invention provides a hydraulic compensation mechanism for a marine turntable, comprising a base 1, a hydraulic drive unit, a support assembly, and a roller assembly 5. The lower end of the hydraulic drive unit is connected to the base 1, and its upper end is connected to the support assembly, for driving the support assembly to adjust its angle relative to the base 1. The roller assembly 5 is rotatably connected to the support assembly. The roller assembly 5 includes a support frame 51 and a first roller 52 and a second roller 53 arranged side by side. Both the first roller 52 and the second roller 53 are rotatably connected to the top of the support frame 51, and their wheel surfaces together form a continuous curved surface for supporting the turntable 9. The hydraulic drive unit is used to drive the support assembly and the roller assembly 5 to adaptively adjust according to the load changes transmitted by the turntable 9, so as to buffer the impact generated when the roller passes through the gap of the bottom pad plate of the turntable 9. Figure 7 and Figure 8 As shown, the hydraulic replenishment and compensation mechanism of the support roller and the turntable 9 are both installed on the hull. The pad is composed of multiple pad pieces 7, and gaps are formed between adjacent pad pieces 7.

[0025] In this embodiment, the lower end of the hydraulic drive unit is connected to the base 1, and the upper end is connected to the support assembly. It can adaptively drive the support assembly and the roller assembly 5 to adjust their angles according to the load changes transmitted by the turntable 9. This can accurately buffer the impact generated when the roller assembly 5 passes through the gap of the bottom pad plate of the turntable 9, which is composed of multiple pad plates 7, and avoid vibration and shaking caused by rigid contact. At the same time, the first roller 52 and the second roller 53 are rotatably connected side by side on the support frame 51 of the roller assembly 5. The wheel surfaces of the two rollers together form a continuous curved surface supporting the turntable 9. With the adaptive adjustment of the hydraulic drive unit, the roller assembly 5 and the turntable 9 can always maintain a stable support contact state. This not only effectively improves the smoothness of the turntable 9's operation and ensures the uniformity and laying accuracy of the submarine cable, but also avoids the transmission of impact vibration to the hull structure, reduces equipment wear, and greatly improves the operational reliability and service life of the welded turntable in submarine cable laying operations.

[0026] Specifically, the hydraulic drive unit is a drive structure capable of outputting flexible power. The linkage connection between the upper end and the support component allows the hydraulic drive force to be directly transmitted to the support component. When the turntable 9 rotates and the roller assembly 5 passes through the gap of the pads composed of multiple pads 7, the load transmitted from the turntable 9 to the roller assembly 5 will fluctuate in real time with the change of the support surface at the gap. The hydraulic drive unit can accurately sense this load change and output matching hydraulic power in an instant. By pushing or pulling back the support component, the roller assembly 5 is driven to complete adaptive angle adjustment, allowing the roller assembly 5 to flexibly fit the surface change of the pad at the bottom of the turntable 9 for support, rather than the hard contact support of a rigid roller. This offsets the impact force caused by the sudden change of the support surface when the roller assembly 5 passes through the gap, thereby accurately buffering the impact and avoiding vibration and shaking caused by rigid contact.

[0027] The continuous curved surface formed by the first and second rollers 52 and 53 rotating side-by-side on the support frame 51 allows the contact between the roller assembly 5 and the turntable 9 to change from a single-point / single-wheel contact to a continuous surface contact, resulting in a larger coverage area for the contact support. Combined with the hydraulic drive unit's adaptive angle adjustment of the support assembly and roller assembly 5 according to changes in the load on the turntable 9, when the turntable 9 rotates and the roller assembly 5 moves to a gap in the pad or an undulating area on the pad surface, the hydraulic drive unit will adjust the support angle of the roller assembly 5 in real time, ensuring that the continuous curved surface of the first and second rollers 52 is always in contact with the pad at the bottom of the turntable 9. The surfaces remain in close contact, and during the rotation of turntable 9, the two rollers can rotate synchronously with turntable 9 to achieve rolling support, avoiding instability caused by sliding friction. At the same time, the continuous curved support structure ensures that when one roller reaches the gap, the other roller still maintains effective contact with the pad surface, always providing continuous and stable support force for turntable 9 without any interruption of support. This allows the roller assembly 5 and turntable 9 to always maintain a stable support contact state, effectively improving the smoothness of turntable 9 operation and fundamentally avoiding turntable speed fluctuations caused by unstable support, thereby ensuring the uniformity of submarine cable release and laying accuracy.

[0028] like Figure 1 and Figure 2 As shown, the hydraulic drive unit includes a hydraulic cylinder 4, a hydraulic pump station, a control valve group, and a pressure sensor. The cylinder body of the hydraulic cylinder 4 is hinged to the base 1, and the end of its piston rod is hinged to the support assembly. The pressure sensor is used to detect the pressure of the hydraulic cylinder 4. The control valve group adjusts the oil supply from the hydraulic pump station to the hydraulic cylinder 4 according to the signal from the pressure sensor to dynamically compensate for the support force.

[0029] In this embodiment, the extension and retraction of the hydraulic cylinder 4 can flexibly drive the support assembly to adjust its angle, adapting to the changing support angle requirements of the turntable 9. The pressure sensor can accurately detect pressure changes within the hydraulic cylinder 4 in real time, precisely capturing load fluctuations transmitted by the turntable 9. The control valve group can adjust the oil supply from the hydraulic pump station to the hydraulic cylinder 4 in real time based on the detection signal from the pressure sensor, thereby dynamically adjusting the output support force of the hydraulic cylinder 4. This achieves real-time dynamic compensation for the support force of the roller assembly 5, ensuring that the support force of the roller assembly 5 on the turntable 9 always matches the load, effectively avoiding impact and shaking problems caused by excessive or insufficient support force, further improving the stability and adaptability of the roller assembly 5 support, and providing precise and reliable hydraulic power support for the impact of the buffer pad gaps and ensuring the smooth operation of the turntable 9.

[0030] like Figure 3 and Figure 4 As shown, the wheel surfaces of the first support roller 52 and the second support roller 53 are conical, and their minor diameter ends are positioned relatively close to each other.

[0031] In this embodiment, the first support roller 52 and the second support roller 53 adopt a conical wheel surface with their small diameter ends relatively close together. This allows the conical wheel surfaces of the two to connect and form an arc-shaped continuous support surface that matches the arc-shaped bottom surface of the turntable 9. Compared with a flat wheel surface, this can significantly improve the contact fit between the support roller assembly 5 and the turntable 9, allowing the first support roller 52 and the second support roller 53 to evenly bear the load transmitted by the turntable 9, and avoiding uneven wear of the support rollers or turntable support offset caused by local stress concentration.

[0032] Specifically, the adaptive arc-shaped support surface, combined with the adaptive angle adjustment of the hydraulic drive unit, allows the roller assembly 5 to maintain a stable surface contact support with the turntable 9 when the turntable 9 rotates and passes through the gap of the pad plate. This effectively disperses the impact force, further buffers rigid impacts, reduces vibration and shaking, ensures the smooth operation of the turntable 9, and at the same time reduces local wear on the first roller 52 and the second roller 53, extending the service life of the roller assembly 5.

[0033] like Figure 3 and Figure 4 As shown, the rotation axes of the first support roller 52 and the second support roller 53 are both inclined toward the rotation center of the turntable 9 so that the continuous curved surface matches the motion trajectory of the bottom of the turntable 9.

[0034] In this embodiment, by tilting the rotation axes of the first support roller 52 and the second support roller 53 towards the rotation center of the turntable 9, the continuous curved surface formed by their connection can precisely match the arc-shaped motion trajectory of the bottom of the turntable 9. This ensures that as the turntable 9 rotates around its own rotation center, the first support roller 52 and the second support roller 53 maintain a non-abrasive, close rolling contact with the bottom of the turntable 9, avoiding sliding friction and localized hard contact caused by parallel axis settings. This effectively reduces the wear rate of the support roller surfaces and extends the service life of the first support roller 52 and the second support roller 53. Specifically, the inclined axis structure design, combined with the conical wheel surface structure of both, can further improve the fit between the continuous curved surface and the bottom of the turntable 9, allowing the load transmitted by the turntable 9 to be evenly distributed on the first support roller 52 and the second support roller 53, avoiding the problem of unstable support caused by local stress concentration. Moreover, when the turntable 9 passes through the gap of the pad plate, the impact force can be more evenly absorbed and buffered by the two support rollers. With the dynamic support force compensation of the hydraulic drive unit, the support stability of the support roller assembly 5 is further improved, reducing the vibration and shaking of the turntable 9, ensuring its smooth operation and the accuracy of submarine cable laying.

[0035] like Figure 2 and Figure 5 As shown, the support assembly includes a support rod 2 and a protective shell 3. The lower end of the support rod 2 is connected to the base 1, and the protective shell 3 is connected to the support rod 2 through a first rotating shaft 6. The upper end of the hydraulic drive unit is hinged to the drive end of the protective shell 3.

[0036] In this embodiment, the protective shell 3 is connected to the support rod 2 via the first rotating shaft 6, and the upper end of the hydraulic drive unit is hinged to the drive end of the protective shell 3, so that the extension and retraction power of the hydraulic drive unit can be converted into angular deflection motion around the first rotating shaft 6 through the protective shell 3, thereby driving the protective shell 3 and the roller assembly 5 on it to achieve smooth angle adjustment, adapting to the support angle change requirements of the turntable 9. At the same time, the hinge structure of the first rotating shaft 6 makes the angle adjustment process more flexible and smooth, avoiding support impact caused by adjustment jamming.

[0037] Specifically, the protective shell 3 can effectively protect the internal connecting structure and the connection between the roller assembly 5 and the support assembly, reducing the erosion and wear of the critical connecting structure by the marine corrosive environment and operational impurities, improving the structural reliability and service life of the support assembly, and providing continuous structural protection for the stable support and adaptive adjustment of the roller assembly 5.

[0038] like Figure 4 and Figure 5 As shown, the protective shell 3 is rotatably connected to the support frame 51 via the second rotating shaft 8.

[0039] In this embodiment, the hinge structure provides additional adaptive rotational freedom for the roller assembly 5, allowing the roller assembly 5 to flexibly adjust its posture around the second axis 8 according to the running state of the turntable 9. This further adapts to the arc-shaped motion trajectory at the bottom of the turntable 9 and the slight undulations on the surface of the pad, ensuring that the first roller 52, the second roller 53 and the turntable 9 always maintain a rolling support state in close contact, avoiding hard contact and uneven wear problems caused by fixed posture.

[0040] Specifically, this rotating structure, in conjunction with the hydraulic drive unit, can adjust the angle of the protective shell 3 around the first rotating shaft 6, forming a dual adaptive adjustment effect. When the turntable 9 passes through the gap of the pad, it can more flexibly buffer the impact force, effectively reduce the generation of vibration and shaking, and improve the smoothness and stability of the support.

[0041] like Figure 4 and Figure 5 As shown, the support frame 51 has a first mounting groove 511 and a second mounting groove 512. The first support roller 52 is connected to the first mounting groove 511 through a connecting shaft 54, and the second support roller 53 is connected to the second mounting groove 512 through a connecting shaft 54.

[0042] In this embodiment, the first mounting groove 511 and the second mounting groove 512 ensure that the tilt angle of their rotation axes toward the rotation center of the turntable 9 is accurate, avoiding problems such as insufficient support fit and uneven load distribution caused by installation deviation. Moreover, the groove-type mounting structure, combined with the connection method of the connecting shaft 54, makes the rotational connection of the first support roller 52 and the second support roller 53 more stable. The groove can form a certain protective enclosure for the connection part between the connecting shaft 54 ​​and the support roller, reducing the erosion of the connection structure by impurities and corrosive media in the marine operating environment, and improving the structural stability and service life of the support roller assembly 5.

[0043] like Figure 4 and Figure 6 As shown, the first support roller 52 and the second support roller 53 have the same structure, and the diameter of the side of the two rollers closer to the rotation center of the turntable 9 is smaller than the diameter of the other side.

[0044] In this embodiment, the first support roller 52 and the second support roller 53 adopt the same structural design, and the diameter of the side of both closer to the rotation center of the turntable 9 is smaller than the diameter of the other side. This ensures the commonality of the components of the support roller assembly 5, greatly reducing the cost and difficulty of production, processing, assembly, debugging, and subsequent maintenance and replacement. It also allows the two support rollers to naturally form a conical wheel surface that fits the arc-shaped bottom surface of the turntable 9. In addition, the arrangement of their smaller diameter ends being relatively close together allows them to be precisely connected to form a continuous curved surface that fits the bottom of the turntable 9. Specifically, the gradually changing diameter structure, combined with the tilting of the roller's rotation axis toward the rotation center of the turntable 9, allows the linear velocity of the roller to match the linear velocity of the corresponding contact position at the bottom of the turntable 9, achieving pure rolling support without slippage. This avoids problems such as uneven wear of the roller and turntable support vibration caused by sliding friction, and prevents local stress concentration. It not only improves the support stability and load-bearing capacity of the roller assembly 5, but also reduces the wear rate of the roller surface and extends the service life of the first roller 52 and the second roller 53.

[0045] like Figure 3 and Figure 4 As shown, the connecting shaft 54 ​​is inclinedly connected to the support frame 51, so that the axis of the first support roller 52 and the second support roller 53 are oriented toward the axis of the turntable 9.

[0046] In this embodiment, the connecting shaft 54 ​​is inclinedly connected to the support frame 51, directly driving the axes of the first support roller 52 and the second support roller 53 to be aligned with the axis of the turntable 9. This provides precise structural support for the support rollers to adapt to the arc-shaped motion trajectory of the turntable 9, ensuring that the rotation axes of the first support roller 52 and the second support roller 53 are aligned with the radial direction of the turntable 9. When the turntable 9 rotates around its own axis, the support rollers can achieve pure rolling contact with the bottom of the turntable 9, avoiding problems such as uneven wear of the support rollers, turntable support vibration, and local stress concentration caused by sliding friction.

[0047] like Figure 4 and Figure 6 As shown, the first support roller 52 and the second support roller 53 have mounting holes 55 that are adapted to the connecting shaft 54. The diameter of the mounting hole 55 on the side closer to the rotation center of the turntable 9 is smaller than the diameter on the other side.

[0048] In this embodiment, the mounting hole 55 and the connecting shaft 54 ​​are fitted together, which can accurately limit the displacement of the connecting shaft 54 ​​in the direction of the rotation center of the turntable 9, and prevent the first support roller 52 and the second support roller 53 from moving towards the center of rotation of the turntable 9, thus ensuring the stability of the support position of the first support roller 52 and the second support roller 53 on the turntable 9.

[0049] Specifically, the non-uniform diameter mounting hole 55 structure can form a guide surface during assembly, which facilitates the quick insertion of the connecting shaft 54 ​​into the mounting holes 55 of the first support roller 52 and the second support roller 53, thereby improving the convenience of assembly operations.

[0050] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A hydraulic compensation mechanism for a support roller in a marine turntable, characterized in that, It includes a base (1), a hydraulic drive unit, a support assembly, and a roller assembly (5). The lower end of the hydraulic drive unit is connected to the base (1), and its upper end is connected to the support assembly. It is used to drive the support assembly to adjust the angle relative to the base (1). The roller assembly (5) is rotatably connected to the support assembly. The roller assembly (5) includes a support frame (51), and a first roller (52) and a second roller (53) arranged side by side. The first roller (52) and the second roller (53) are rotatably connected to the top of the support frame (51), and their wheel surfaces together form a continuous curved surface for supporting the turntable (9). The hydraulic drive unit is used to drive the support assembly and the roller assembly (5) to make adaptive adjustments according to the load changes transmitted by the turntable (9) in order to buffer the impact generated when the roller passes through the gap of the bottom pad plate of the turntable (9).

2. The hydraulic compensation mechanism for a marine turntable as described in claim 1, characterized in that, The hydraulic drive unit includes a hydraulic cylinder (4), the cylinder body of which is hinged to the base (1), and the end of its piston rod is hinged to the support assembly.

3. The hydraulic compensation mechanism for a marine turntable as described in claim 1, characterized in that, The first support roller (52) and the second support roller (53) have conical surfaces, and their minor diameter ends are positioned close to each other.

4. The hydraulic supplementary compensation mechanism for a marine turntable as described in claim 3, characterized in that, The rotation axes of the first roller (52) and the second roller (53) are both inclined toward the rotation center of the turntable (9).

5. The hydraulic compensation mechanism for a marine turntable as described in claim 1, characterized in that, The support assembly includes a support rod (2) and a protective shell (3). The lower end of the support rod (2) is connected to the base (1). The protective shell (3) is connected to the support rod (2) through a first rotating shaft (6). The upper end of the hydraulic drive unit is hinged to the drive end of the protective shell (3).

6. The hydraulic supplementary compensation mechanism for a marine turntable as described in claim 5, characterized in that, The protective shell (3) is rotatably connected to the support frame (51) via a second rotating shaft (8).

7. The hydraulic supplementary compensation mechanism for a marine turntable as described in claim 1, characterized in that, The support frame (51) is provided with a first mounting groove (511) and a second mounting groove (512). The first support roller (52) is connected to the first mounting groove (511) through a connecting shaft (54), and the second support roller (53) is connected to the second mounting groove (512) through a connecting shaft (54).

8. The hydraulic supplementary compensation mechanism for a marine turntable as described in claim 3, characterized in that, The first support roller (52) and the second support roller (53) have the same structure, and the diameter of the side of the two rollers closer to the rotation center of the turntable (9) is smaller than the diameter of the other side.

9. The hydraulic supplementary compensation mechanism for a marine turntable as described in claim 7, characterized in that, The connecting shaft (54) is obliquely connected to the support frame (51).

10. The hydraulic compensation mechanism for a marine turntable as described in claim 7, characterized in that, The first roller (52) and the second roller (53) have mounting holes (55) that are adapted to the connecting shaft (54). The diameter of the mounting hole (55) on the side closer to the rotation center of the turntable (9) is smaller than the diameter on the other side.

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