Rudder stock hoisting and turning-over device and using method thereof

Abstract

The invention relates to the technical field of rudderstock hoisting, in particular to a rudderstock hoisting turnover device and a using method thereof.The rudderstock hoisting turnover device comprises a base, a rotating bucket is rotationally connected to the base in the vertical direction, and when the rotating bucket is in a free state, the top side of the rotating bucket is open; the side, in the rotating direction, of the rotating bucket is in an arc shape and is matched with the side face of the bottom end of the rudderstock, the other side of the rotating bucket is detachably connected with a movable plate, locking structures are further arranged on the side faces of the rotating bucket and the base, and when the rotating bucket rotates to the position where the movable plate is located on the top side, the locking structures are locked. And the locking structure is used for locking the relative position of the rotating bucket and the base. The turnover device is reasonable in structure, simple and convenient to operate and reusable, the weight of the rudderstock is basically concentrated on the rotating bucket, the hoisting safety risk is reduced, the hoisting time is saved, turnover operation can be completed only through one hoisting device, the efficiency is improved, and the cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of rudder stock hoisting, and in particular to a rudder stock hoisting and turning device and a use method thereof. Background Art

[0002] The existing rudder stock lifting technology is to use a gantry crane fixed to the upper end of the rudder stock and lift it out of the steering gear room, and then add an additional gantry crane or car crane fixed to the lower end of the rudder stock to cooperate to change the rudder stock from a vertical direction to a horizontal direction and place it flat on the dock, and finally lift it to a workshop or other place for inspection or repair; after the repair is completed, the installation sequence is reversed, that is, both disassembly and installation require at least two lifting equipment to implement. Moreover, in the existing technology, two lifting equipment with a working load not less than the net weight of the hoisted object are required to solve the problem of the rudder stock turning over. The construction process is complicated and requires frequent tying, which greatly prolongs the construction time. It also requires two lifting equipment, and the overall construction cost is higher. Therefore, it is urgent to design a device and method that can solve the problems of complex construction process, long construction time, and high construction cost of ship rudder stock lifting. Summary of the Invention

[0003] To address the problems of the prior art, one of the objectives of the present invention is to provide a rudder stock hoisting and turning device. This device has a reasonable structure, is simple and convenient to operate, and is reusable. The weight of the rudder stock is basically concentrated in the rotating bucket, reducing the safety risks of hoisting. A second objective of the present invention is to provide a method for using the rudder stock hoisting and turning device. This method can greatly save hoisting time. Only one lifting device is required to complete the turning operation, thereby improving efficiency and saving costs.

[0004] The rudder stock lifting and turning device described in the present invention includes a base, and a rotating bucket is connected to the base in a vertical direction. When the rotating bucket is in a free state, the top side of the rotating bucket is open, and one side of the rotating bucket along the rotation direction is arc-shaped and adapted to the side surface of the bottom end of the rudder stock. The other side of the rotating bucket is detachably connected to a movable plate, and a locking structure is also provided on the side surfaces of the rotating bucket and the base. When the rotating bucket rotates until the movable plate is located on the top side, the locking structure locks the relative position of the rotating bucket and the base.

[0005] In one embodiment, the base includes a bottom plate, side plates are respectively provided on the bottom plate corresponding to the left and right sides of the rotating bucket, and side plates are respectively provided on the bottom plate corresponding to the front and rear sides of the rotating bucket, and a rotation space for the rotating bucket is left between the two side plates. The height of the two side plates is greater than the height of the two side plates, and the top ends of the two side plates are respectively provided with rotating bearings connected to the rotating bucket for rotation.

[0006] In one embodiment, the four corners of the base plate are fixedly connected to the ground via fixing bolts and ground anchors in sequence.

[0007] In one embodiment, ribs are respectively provided between the side plate and the bottom plate on both sides facing the rotary bearing.

[0008] In one embodiment, the locking structure includes pin holes formed on the sides of the rotating bucket and the base, and latches matched with the pin holes.

[0009] In one embodiment, a rotating shaft is provided on the outer side of the rotating bucket near the top, and the outer ends of the two rotating shafts are provided with limit fuses.

[0010] In one embodiment, the inner side of the rotating bucket is also paved with high-pressure cardboard.

[0011] The method for using the rudder stock hoisting and turning device of the present invention uses the rudder stock hoisting and turning device as described above, and comprises the following steps:

[0012] S1. Install the rudder stock hoisting and turning device within the effective operating range of the lifting equipment, and the rotation direction of the rotating bucket is consistent with the direction of the door crane rail of the lifting equipment;

[0013] S2, after the lifting equipment lifts the top end of the rudder stock and lifts it out of the steering gear room, the bottom end of the rudder stock is directly placed in the rotating bucket;

[0014] S3, the lifting device slowly moves along the rotation direction of the rotating bucket to move away from the rotating bucket, and at the same time slowly lowers the tiller so that the tiller gradually changes from a vertical state to a horizontal state;

[0015] S4, the locking structure locks the position of the rotating bucket, the movable plate is disassembled, and the method of hoisting the rudder stock by the lifting equipment is changed, so that the rudder stock is hoisted upward and horizontally and transported to another place for maintenance;

[0016] S5. After the inspection is completed, the rudder stock can be installed by reversing the above sequence.

[0017] In one embodiment, between step S2 and step S3, the following step is further included: a plurality of first pads are set on the ground in the rotation direction of the rotating bucket according to the length of the rudder bar, so that the rudder bar is supported by the rotating bucket and the first pads when it is transformed into a horizontal state.

[0018] In one embodiment, in step S2, a second spacer is placed between the bottom end of the rudder bar and the rotating bucket.

[0019] Compared with the prior art, the beneficial effects of the technical solution of the present invention are:

[0020] The device of the present invention has a reasonable and stable structure. During use, the turning trajectory of the tiller is fixed, aligning with the travel direction of the lifting equipment. The lifting equipment can simply rotate about the center of the rotating axis to raise or lower the tiller. No lashing is required, making operation simple and convenient. During turning, the weight of the tiller is essentially concentrated on the rotating bucket, making operation safer and more efficient than the existing technology. Only one lifting equipment is required to complete the turning operation, significantly shortening the time required, saving costs, and the device can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front perspective view of a rudder stock hoisting and turning device of the present invention;

[0022] Figure 2 It is a side sectional view of a rudder stock hoisting and turning device of the present invention;

[0023] Figure 3 This is a top view of a rudder stock hoisting and turning device of the present invention;

[0024] Figure 4 This is a flow chart of a method for using a rudder stock hoisting and turning device according to the present invention;

[0025] Figure 5 This is a schematic diagram of the state of a rudder stock hoisting and turning device of the present invention when in use Figure 1 ;

[0026] Figure 6 This is a schematic diagram of the state of a rudder stock hoisting and turning device of the present invention when in use Figure 2 .

[0027] Explanation of the accompanying numbers: 1-base, 11-bottom plate, 12-side plate, 13-side plate, 14-rotating bearing, 15-fixing bolt, 16-ground anchor, 17-rib plate, 2-rotating bucket, 21-rotating shaft, 22-limiting insurance, 23-high-pressure cardboard, 3-movable plate, 4-locking structure, 5-lifting equipment, 6-first pad. DETAILED DESCRIPTION

[0028] The accompanying drawings are for illustrative purposes only and are not to be construed as limitations on this patent. To better illustrate this embodiment, some components of the accompanying drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted from the accompanying drawings.

[0029] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installation" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, which can be considered as internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0030] like Figure 1-Figure 3 As shown, a rudder bar hoisting and turning device of the present invention includes a base 1, on which a rotating bucket 2 is connected to rotate in the vertical direction. When the rotating bucket 2 is in a free state, the top side of the rotating bucket 2 is open, and one side of the rotating bucket 2 along the rotation direction is arc-shaped and adapted to the side of the bottom end of the rudder bar. The other side of the rotating bucket 2 is detachably connected to a movable plate 3. A locking structure 4 is also provided on the side of the rotating bucket 2 and the base 1. When the rotating bucket 2 rotates to the movable plate 3 located on the top side, the locking structure 4 locks the relative position of the rotating bucket 2 and the base 1. The turning device of the present invention has a reasonable structure, is simple and convenient to operate, and can be reused. The weight of the rudder bar is basically concentrated on the rotating bucket 2, reducing the safety risk of hoisting. This device uses the rotating bucket 2 to adapt to the bottom end of the rudder bar, and the rudder bar is directly placed vertically in the rotating bucket 2. It only needs to cooperate with the control of a lifting device 5 to make the rudder bar smoothly assembled along the flipping direction of the rotating bucket 2 and placed horizontally, so as to facilitate subsequent maintenance and other processes. Moreover, the locking structure 4 fixes the position of the rotating bucket 2, waiting for the rudder stock to be lifted or placed in the horizontal state, and the detachable movable plate 3 can facilitate the rudder stock to be placed in the rotating bucket 2 at one end when it is in the horizontal state again, and the other end can also cooperate with the lifting equipment 5 to operate, so as to restore the vertical state and be lifted into the steering gear room for installation.

[0031] Furthermore, the structure of the base 1 mainly includes a bottom plate 11, and side plates 12 are respectively provided on the left and right sides of the bottom plate 11 corresponding to the rotating bucket 2, and side plates 13 are respectively provided on the front and rear sides of the bottom plate 11 corresponding to the rotating bucket 2. A rotation space for the rotating bucket 2 is left between the two side plates 13, and the height of the two side plates 12 is greater than the height of the two side plates 13, and the tops of the two side plates 12 are respectively provided with rotating bearings 14 that are rotatably connected to the rotating bucket 2. The base 1 can be formed by welding the bottom plate 11, the side plates 12 and the side plates 13 one by one. It is mainly fixed to a place where it is needed, such as a dock, through the bottom plate 11. The two side plates 12 are used to set up the rotating bearings 14 so that the rotating bucket 2 can be rotatably connected and open upward in a free state. The two shorter side plates 13 are used to limit the outermost edge position of the rotating bucket 2 in the rotation trajectory to avoid collision, etc. Specifically, the four corners of the bottom plate 11 are fixed to the ground by fixing bolts 15 and ground anchors 16 in turn. As Figure 1As shown, anchors 16 are embedded in the ground, and the bottom plate 11 is fixed to the ground with fixing bolts 15. This ensures that the entire base 1 is firmly positioned and provides sufficient support for the rotation of the rotating bucket 2. To strengthen the force applied to the side plates 12, ribs 17 are provided on both sides of the rotating bearing 14 between the side plates 12 and the bottom plate 11. This strengthens the stress of the side plates 12 and prevents the side plates 12 from being easily bent due to the gravity of the rudder stock or the shift of the center of gravity during rotation.

[0032] Furthermore, the locking structure 4 includes pin holes formed on the sides of the rotating bucket 2 and the base 1, and latches adapted to fit within the pin holes. When the rotating bucket 2 rotates with the tiller to a horizontal position, to maintain the 90° rotation of the rotating bucket 2, with the curved surface at the bottom and the movable plate 3 at the top, the latches can be inserted into the corresponding pin holes on the sides of the rotating bucket 2 and the base 1 to achieve a locked position. This allows the movable plate 3 to be opened outward, i.e., upward, similar to a hinged door, allowing the tiller to be lifted horizontally and upwards. The reverse procedure can be employed for reinstallation.

[0033] In addition, a rotating shaft 21 is provided on the outside of the rotating bucket 2 near the top, and the outer ends of the two rotating shafts 21 are provided with limit safety devices 22. The rotating bucket 2 has no protruding portion in the middle to accommodate the lower end of the rudder bar. After the outer rotating shaft 21 is inserted into the rotating bearing 14 on the base 1, a limit safety device 22 is further provided, such as an existing safety shaft assembly or a mechanism that cooperates with a safety button and a head, thereby limiting the rotation of the rotating bucket 2 to within a 90° range, that is, from the free state of the rudder bar vertically inserted into the rotating bucket 2 to the state of the rudder bar being horizontal with the movable plate 3 positioned on the upper side. The inner side of the rotating bucket 2 is also covered with high-pressure cardboard 23 to achieve a certain buffering effect, preventing the rudder bar from directly colliding with the rotating bucket 2 body during movement, causing unnecessary wear.

[0034] like Figure 4-Figure 6 As shown, a method for using a rudder stock hoisting and turning device of the present invention uses the above-mentioned rudder stock hoisting and turning device and includes the following steps:

[0035] S1. Install the rudder stock hoisting and turning device within the effective operating range of the lifting equipment 5, and the rotation direction of the rotating bucket 2 is consistent with the direction of the door crane rail of the lifting equipment 5;

[0036] S2, the hoisting equipment 5 lifts the top of the rudder stock and hoists it out of the steering gear room, and then directly places the end of the rudder stock in the rotating bucket 2;

[0037] S3, the lifting device 5 slowly moves along the rotation direction of the rotating bucket 2 so as to move away from the rotating bucket 2, and at the same time slowly lowers the tiller so that the tiller gradually changes from a vertical state to a horizontal state;

[0038] S4, the locking structure 4 locks the position of the rotating bucket 2, disassembles the movable plate 3, changes the way the lifting equipment 5 lifts the rudder stock, and lifts the rudder stock horizontally upward and transports it to another place for maintenance;

[0039] S5. After the inspection is completed, the rudder stock can be installed by reversing the above sequence.

[0040] According to the method of the present invention, when the rudder stock is turned over, the weight of the rudder stock is basically concentrated on the rotating bucket 2, which is safer and more efficient than the operation of the prior art. Only one lifting device 5 is needed to complete the turning operation, which greatly shortens the time and saves costs. The device can also be reused. In the 90° adjustable support frame structure, the rudder stock can also be reasonably placed according to different repair plans.

[0041] Between steps S2 and S3, the following steps are also included: A plurality of first pads 6 are placed on the ground in the direction of rotation of the rotating bucket 2, depending on the length of the tiller. This allows the tiller to be supported by the rotating bucket 2 and the first pads 6 when it is horizontal. To prevent the tiller from directly contacting the ground when placed horizontally, specific first pads 6 can be placed at predetermined locations for cushioning. This ensures that when the tiller is horizontal, it is not only supported at both ends by the lifting equipment 5 and the rotating bucket 2, but also supported by the first pads 6. This facilitates the lifting equipment 5 to switch lifting methods and transport the tiller to another location for inspection. Furthermore, in step S2, a second pad can be placed between the bottom end of the tiller and the rotating bucket 2 to compensate for contact between the different sized tillers and the rotating bucket 2, further preventing rigid contact.

[0042] Conventional methods require two or more cranes to coordinate and complete a rudder stock turnover, taking at least an hour. However, the present invention, once the turning device is secured, takes no more than 30 minutes, saving 50% of the time required by existing methods. Furthermore, the turning device is reusable and compatible with most rudder stock disassembly and assembly procedures. Evaluations indicate that each use can save nearly 10,000 yuan, significantly reducing lifting costs.

[0043] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application.

[0044] In the figure, the description of the positional relationship is only for illustrative purposes and should not be understood as a limitation on this patent; obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A rudder stock hoisting and turning device, characterized in that: The invention comprises a base (1), wherein a rotating bucket (2) is connected to the base (1) in a vertical rotation direction. When the rotating bucket (2) is in a free state, the top side of the rotating bucket (2) is open. One side of the rotating bucket (2) along the rotation direction is arc-shaped and matches the side surface of the bottom end of the rudder bar. The other side of the rotating bucket (2) is detachably connected to a movable plate (3). A locking structure (4) is also provided on the side surfaces of the rotating bucket (2) and the base (1). When the rotating bucket (2) rotates until the movable plate (3) is located on the top side, the locking structure (4) locks the relative position of the rotating bucket (2) and the base (1).

2. The rudder stock hoisting and turning device according to claim 1, characterized in that: The base (1) includes a bottom plate (11), side plates (12) are respectively provided on the bottom plate (11) corresponding to the left and right sides of the rotating bucket (2), and side plates (13) are respectively provided on the bottom plate (11) corresponding to the front and rear sides of the rotating bucket (2), a rotation space for the rotating bucket (2) is reserved between the two side plates (13), the height of the two side plates (12) is greater than the height of the two side plates (13), and the top ends of the two side plates (12) are respectively provided with a rotating bearing (14) rotatably connected to the rotating bucket (2).

3. The rudder stock hoisting and turning device according to claim 2, characterized in that: The four corners of the base plate (11) are fixedly connected to the ground via fixing bolts (15) and ground anchors (16) in sequence.

4. The rudder stock hoisting and turning device according to claim 3, characterized in that: Ribs (17) are respectively provided between the side plate (12) and the bottom plate (11) on both sides relative to the rotary bearing (14).

5. The rudder stock hoisting and turning device according to claim 1, characterized in that: The locking structure (4) comprises pin holes formed on the sides of the rotating bucket (2) and the base (1), and latches adapted to the pin holes.

6. The rudder stock hoisting and turning device according to claim 1, characterized in that: A rotating shaft (21) is provided on the outer side of the rotating bucket (2) near the top end, and the outer ends of the two rotating shafts (21) are provided with position limiting fuses (22).

7. The rudder stock hoisting and turning device according to claim 6, characterized in that: The inner side of the rotating bucket (2) is also paved with high-pressure paperboard (23).

8. A method for using a rudder stock hoisting and turning device, characterized in that: The rudder stock hoisting and turning device according to any one of claims 1 to 7 is used, and includes the following steps: S1, installing the rudder stock hoisting and turning device within the effective operating range of the lifting equipment (5), and the rotation direction of the rotating bucket (2) is consistent with the direction of the door crane rail of the lifting equipment (5); S2, after the lifting equipment (5) lifts the top end of the rudder stock and lifts it out of the steering gear room, the end of the rudder stock is directly placed in the rotating bucket (2); S3, the lifting device (5) slowly moves along the rotation direction of the rotating bucket (2) so as to be away from the rotating bucket (2), and at the same time slowly lowers the rudder bar so that the rudder bar gradually changes from a vertical state to a horizontal state; S4, the locking structure (4) locks the position of the rotating bucket (2), disassembles the movable plate (3), changes the way the lifting equipment (5) lifts the rudder stock, and lifts the rudder stock upward and horizontally and transports it to another place for inspection and maintenance; S5. After the inspection is completed, the rudder stock can be installed by reversing the above sequence.

9. The method for using the rudder stock hoisting and turning device according to claim 8, characterized in that: Between step S2 and step S3, the following step is also included: a plurality of first pads (6) are arranged on the ground in the rotation direction of the rotating bucket (2) according to the length of the rudder bar, so that the rudder bar is supported by the rotating bucket (2) and the first pads (6) when it is transformed into a horizontal state.

10. The method for using the rudder stock hoisting and turning device according to claim 9, characterized in that: In step S2, a second cushion block is laid between the bottom end of the rudder bar and the rotating bucket (2).

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