A turning device for a riprap and leveling ship and a riprap and leveling ship

Abstract

The present invention discloses a flipping device for a riprap and leveling ship and the riprap and leveling ship. The flipping device comprises: a driving part, a brake, a speed reducer, a rotating main shaft, and a supporting seat arranged coaxially; wherein the driving part, the brake, the speed reducer and the driving end of the rotating main shaft are connected in sequence, the driven end of the rotating main shaft is used to be connected with a retaining frame, and the rotating main shaft is supported on a sliding trolley through the supporting seat. When the brake is in the first state, the driving part can drive the speed reducer to transmit the torque to the rotating main shaft, thereby driving the retaining frame to rotate in the circumferential direction; when the brake is switched from the first state to the second state, the retaining frame stops rotating and remains at a set angle position, so that the posture of the riprap tube and the position of the leveling head can be freely adjusted, which effectively improves the ship's dispatching capability and the safety and operability during the maintenance of key components, and meets the needs of daily maintenance and dispatching navigation of riprap and leveling ships that are not suitable for the existing technology.

Description

Technical Field

[0001] The invention relates to the field of deep-water gravel bed leveling, and in particular to a turning device for a riprap leveling ship and the riprap leveling ship. Background Art

[0002] A moon pool is usually set in the middle of the main hull of a large-scale riprap and leveling ship. The trolley is placed horizontally above the moon pool, and the riprap pipe is embedded in the center of the trolley. The riprap pipe can only move vertically relative to the trolley. When the ship needs to be dispatched to return or the riprap pipe needs to be maintained, the riprap pipe needs to be lifted out of the water. The specific operation method is: during maintenance, lift the leveling head above the water surface to ensure that there is a certain safety distance between the lower end face of the leveling head and the upper edge of the railing of the simple maintenance platform set on the side of the ship. Then the trolley drives the riprap pipe and the leveling head to the top of the simple maintenance platform. The staff can use the maintenance platform to perform daily inspection and maintenance on the leveling head. This requires that the top deck of the riprap and leveling ship should have a sufficient height to the baseline of the hull and the riprap pipe should have sufficient travel relative to the trolley in the plumb direction. However, if other equipment such as pipelines arranged along the length of the riprap pipe need to be inspected or maintained, high-altitude operations are required, which is extremely dangerous. When maneuvering, the leveling head also needs to be lifted above the water surface, and then a large number of necessary lashing and fixing measures are applied to the riprap pipe so that the force generated by the movement of the ship can be directly transmitted to the hull structure to avoid damage to the walking car. In addition, because the standing height and center of gravity of the riprap pipe are very high during maneuvering and towing, certain requirements are placed on the stability of the ship and the navigation conditions of the water area.

[0003] Therefore, the existing methods of lifting the retainer or the riprap pipe have some special requirements for the riprap leveling ship. For a riprap leveling ship that is not sufficient to lift the leveling head above the water surface or has poor maintenance conditions, safety, and operability, the retainer and the riprap pipe cannot be lifted to the water surface by the above technology for normal inspection and maintenance. Summary of the invention

[0004] The invention aims to solve the problem that it is inconvenient to inspect and maintain the riprap pipe by the riprap leveling ship in the prior art.

[0005] In order to solve the above technical problems, an embodiment of the present invention discloses a flipping device for a riprap and leveling ship, wherein the riprap and leveling ship has a retaining frame, a riprap tube and a sliding trolley, wherein the riprap tube is fixed inside the retaining frame, and is characterized in that it includes: a driving part, a brake, a reducer, a rotating main shaft and a supporting seat arranged coaxially; wherein the driving end of the driving part, the brake, the reducer and the rotating main shaft are connected in sequence, and the driven end of the rotating main shaft is used to connect with the retaining frame, and the rotating main shaft can be supported on the sliding trolley through the supporting seat; when the brake is in the first state, the driving part can drive the reducer and transmit the torque to the rotating main shaft, and the rotating main shaft can drive the retaining frame to rotate circumferentially and surround the axis in the circumferential direction; when the brake is switched from the first state to the second state, the retaining frame stops rotating and remains at a set angle position.

[0006] By adopting the above technical scheme, the driving part, the brake, the reducer, the rotating spindle and the retaining frame are connected in sequence, the rotating spindle is supported on the sliding trolley through the supporting seat, and the reducer can reduce the speed and increase the torque provided by the driving part, so that when the brake is in the first state, the rotating spindle is driven to rotate, thereby driving the retaining frame to rotate to the set position, and then the brake is switched to the second state, so that the retaining frame stops rotating and remains in the set position, thereby realizing the full circumference 360° movement and parking retention of the retaining frame, the riprap pipe and the leveling head in the vertical plane; according to actual use requirements, the posture of the riprap pipe and the position of the leveling head can be freely adjusted, which effectively improves the ship's dispatching capability and the safety and operability during the maintenance and maintenance of key components, and optimizes the posture of the riprap pipe during dispatching navigation, reduces the center of gravity height of the whole ship, and reduces the requirements for ship stability. The development and application of this device makes it possible to reduce the length, width and height of the entire ship, and solves the problems of poor operability and safety faced by existing stone-throwing and leveling ships in daily maintenance and servicing, which are mainly reflected in limited operating space and high-altitude operations. It breaks through the limitations of water conditions caused by passing through bridge tunnels and ship locks and reservoirs during maneuvering navigation, and eliminates the cumbersome sea-binding construction procedures required for maneuvering navigation and resisting typhoons.

[0007] Optionally, in the flipping device provided in an embodiment of the present invention, when the torque of the driving unit reaches a first threshold, the brake switches to a first state, and when the torque of the driving unit decreases to a second threshold, the brake switches to a second state, and the first threshold is greater than the second threshold.

[0008] Optionally, in the turning device provided in the embodiment of the present invention, the first threshold value is 1.2 to 1.5 times the sum of the gravity moment of the retaining frame, the gravity moment of the riprap tube and other external load moments.

[0009] Optionally, the flipping device provided in the embodiment of the present invention further includes: an angle sensor, which is arranged on the retaining frame and is used to detect the angular displacement of the retaining frame.

[0010] Optionally, the flipping device provided in the embodiment of the present invention also includes: a flange fixedly connected to the outer end face of the retaining frame, the driven end of the rotating main shaft is sleeved inside the flange flange and key-connected to the flange flange; a baffle, the retaining frame has a first hollow boss inside, the driven end of the rotating main shaft has an extension section, the extension section extends into the first hollow boss, the baffle is axially abutted against the end of the first hollow boss, and the baffle is axially attached to and fixedly connected to the extension section.

[0011] Optionally, in the flipping device provided in an embodiment of the present invention, the flange includes a base and a main body portion arranged on the base, the base is fixedly connected to the outer end surface of the retaining frame, and the driven end of the rotating spindle is sleeved inside the main body portion and connected to the main body portion; it also includes a rib plate, and both ends of the rib plate are respectively connected to the base and the main body portion.

[0012] Optionally, in the flipping device provided in an embodiment of the present invention, the baffle includes a first part and a second part along the radial direction, the first part is axially abutted against the end of the first hollow boss, and the second part is axially abutted against and fixedly connected to the extension section, and the second part of the baffle has a groove in the middle, and the groove is spaced apart from the end face of the extension section.

[0013] Optionally, in the flipping device provided in an embodiment of the present invention, along the axial direction, the first hollow boss includes a first hollow part and a second hollow part, the inner diameter of the second hollow part is larger than the inner diameter of the first hollow part, and the baffle is located in the second hollow part; the extension section extends into the first hollow part and is axially attached to and fixedly connected to the baffle, and the baffle is axially abutted against the inner end surface of the second hollow part.

[0014] Optionally, in the turning device provided in the embodiment of the present invention, the connection method between the flange and the retaining frame, and / or the connection method between the baffle and the extension section is bolt connection.

[0015] Optionally, in the turning device provided in the embodiment of the present invention, the bolts between the flange and the retaining frame are arranged in a circumferentially staggered manner, and / or the bolts between the baffle and the extension section are arranged in a circumferentially staggered manner.

[0016] Optionally, in the flipping device provided in an embodiment of the present invention, the support seat includes: a driving end support seat and a driven end support seat, the driving end support seat and the driven end support seat are respectively connected to the sliding trolley, and the driving end and the driven end of the rotating main shaft are respectively supported on the driving end support seat and the driven end support seat.

[0017] Optionally, in the turning device provided in the embodiment of the present invention, the driving end and the driven end of the rotating main shaft are supported on the driving end support seat and the driven end support seat respectively through spherical roller bearings.

[0018] Optionally, in the flipping device provided in an embodiment of the present invention, the driving part is a hydraulic motor, the brake is a hydraulic multi-disc brake, the reducer is a planetary gear reducer, the hydraulic motor drives the planetary gear reducer through a spline pair, and the rotating main shaft driving end is key-connected to the planetary gear reducer.

[0019] Correspondingly, an embodiment of the present invention further provides a riprap and leveling boat, comprising a retaining frame, a riprap tube, a sliding trolley, and a flipping device for the riprap and leveling boat provided in any of the above embodiments, wherein the riprap tube is fixed inside the retaining frame, and the rotating main shaft is supported on the sliding trolley through a supporting seat.

[0020] Compared with the prior art, the present invention has the following technical effects:

[0021] By connecting the driving part, the brake, the reducer, the rotating spindle and the retaining frame in sequence, the rotating spindle is supported on the sliding trolley through the supporting seat, and the reducer can reduce the speed and increase the torque provided by the driving part, so that when the brake is in the first state, the rotating spindle is driven to rotate, thereby driving the retaining frame to rotate to the set position, and then the brake is switched to the second state, so that the retaining frame stops rotating and remains in the set position, thereby realizing the full circumference 360° movement and parking retention of the retaining frame, the riprap pipe and the leveling head in the vertical plane; according to actual use needs, the posture of the riprap pipe and the position of the leveling head can be freely adjusted, which effectively improves the ship's dispatching ability and the safety and operability during the maintenance of key components, and optimizes the posture of the riprap pipe during dispatching navigation, reduces the center of gravity height of the whole ship, reduces the requirements for ship stability, and meets the needs of daily maintenance work and dispatching navigation for riprap and leveling ships that are not suitable for existing technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure of the turning device for riprap leveling boat provided by a specific embodiment of the present invention is schematically shown. Figure 1 ;

[0023] Figure 2 The structure of the turning device for riprap leveling boat provided by a specific embodiment of the present invention is schematically shown. Figure 2 ;

[0024] Figure 3 is a cross-sectional view of the connection between the baffle and the rotating main shaft provided by a specific embodiment of the present invention;

[0025] Figure 4 is a cross-sectional view of a baffle provided in a specific embodiment of the present invention;

[0026] Figure 5 is a cross-sectional view of a flange provided in a specific embodiment of the present invention;

[0027] Figure 6 is a side view of a flange provided by a specific embodiment of the present invention;

[0028] Figure 7 is a cross-sectional view of the abutment portion between the baffle and the retaining frame provided in a specific embodiment of the present invention;

[0029] Figure 8 It is a partial enlarged view of the abutment portion between the baffle and the retaining frame provided in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0030] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0031] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0032] In the description of this embodiment, it should be noted that the terms "upper", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0034] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0035] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] In the prior art, the riprap and leveling ship generally uses a vertical lifting method to release the leveling head, which requires the riprap and leveling ship to have a certain height. Therefore, the design of the current riprap and leveling ship is an upper and lower main deck. There is a hollow structure between the upper and lower main decks, that is, the lower deck is helpful for the buoyancy of the whole ship, and the upper deck is mainly used to carry the riprap and leveling equipment. If the leveling head is to be inspected, maintained or the whole ship is dispatched for navigation, the leveling head must be at least lifted above the water surface. The impact brought about by this is that the riprap pipe should have sufficient travel to ensure that the leveling head can be exposed to a certain distance above the water surface. In addition, the operating water depth is large, the riprap pipe stands at a high height, and the center of gravity of the whole ship is also high, which has higher requirements for the stability of the ship (the main scale affects the stability), and after the main scale of the ship increases (including the standing riprap pipe), there are obstacles to passing through the bridge hole or the ship lock reservoir, so the scope of the operating water area is also limited.

[0037] refer to Figure 1 and Figure 2 According to a specific embodiment of the present invention, a turning device for a riprap and leveling boat includes: a driving unit 1, a brake 2, a reducer 3, a rotating main shaft 4 and a supporting seat. The riprap and leveling boat has a retaining frame 200, a riprap tube 300 and a sliding trolley 400. The riprap tube 300 is fixed inside the retaining frame 200 and connected to the retaining frame 200 by a latch, so that the riprap tube 300 can move inside the retaining frame 200; the lower part of the riprap tube 300 is connected to a leveling head 600 for performing underwater gravel leveling work. In addition, a track 500 is horizontally arranged on the riprap and leveling boat, and the sliding trolley 400 travels along the track 500 (the travel direction is Figure 1 In the flipping device provided by the present invention, the driving part 1, the brake 2, the reducer 3, the rotating spindle 4, and the supporting seat are arranged along the same axis, and as Figure 1 and Figure 2 As shown in , the direction of the axis ( Figure 1m direction in the figure) is parallel to the travel direction x of the sliding trolley 400. The driving part 1, the brake 2, the reducer 3 and the driving end 41 of the rotating main shaft 4 are connected in sequence, and the driven end 42 of the rotating main shaft 4 is used to connect with the retaining frame 200. The rotating main shaft 4 can be supported on the sliding trolley 400 through a supporting seat.

[0038] Specifically, when the brake 2 is in the first state, the drive unit 1 can drive the reducer 3, and the reducer 3 processes the torque provided by the drive unit and then transmits the torque to the rotating main shaft 4, thereby causing the rotating main shaft 4 to drive the retaining frame 200 to rotate circumferentially. As a preferred embodiment of the present invention, the rotating main shaft 4 can drive the retaining frame 200 to rotate circumferentially to a set angle position, for example, to rotate until the length direction of the riprap tube is parallel to the horizontal plane or at a certain angle. When the brake 2 is switched from the first state to the second state, the retaining frame 200 stops rotating and remains at the above-mentioned set angle position, that is, the retaining frame 200 is braked and held. It should be noted that the circumferential direction here can refer to the direction around the axis.

[0039] As a preferred embodiment of the present invention, the support seat is rigidly connected to the sliding trolley 400, and the rigid connection here can be a high-strength bolt connection to obtain a greater bearing capacity. The rotating spindle 4 is made of alloy structural steel for forgings, which has good low-temperature impact toughness, high fatigue limit and ability to resist multiple impacts, and can cope with complex stress environments.

[0040] The driving part 1, the brake 2, the speed reducer 3, the rotating main shaft 4 and the retaining frame 200 are connected in sequence. The rotating main shaft 4 is supported on the sliding trolley 400 through a supporting seat. The speed reducer 3 can reduce the torque provided by the driving part 1 and increase the torque, so that when the brake 2 is in the first state, the rotating main shaft 4 is driven to rotate, thereby driving the retaining frame 200 to rotate to a set position, and then the brake 2 is switched to the second state, so that the retaining frame 200 stops rotating and remains in the set position, so that the retaining frame 200, the riprap tube 300 and the leveling head 600 can realize a full 360° movement and parking retention in a vertical plane, increase the freedom of movement of the riprap tube, and change the water discharge mode of the leveling head, that is, the leveling head can be separated from the water surface by a flipping device below the horizontal plane, so that the riprap tube The required stroke is greatly shortened, thereby breaking through the limitations of the main dimensions of the ship and the vertical effective stroke of the riprap pipe, improving the maintenance conditions of the leveling head, and improving the operability and safety during daily inspection, repair or replacement; and according to actual use needs (refer to the maintenance mode and dispatch mode described later), the posture of the riprap pipe 300 and the position of the leveling head are freely adjusted, and the posture of the riprap pipe is optimized, that is, when the riprap pipe is in an inclined or horizontal state (not standing), the center of gravity height of the whole ship is reduced, the requirements for ship stability are reduced, the sea-binding construction process of the whole machine is simplified, the workload is saved, the project cost is effectively controlled, and the needs of daily maintenance and dispatching navigation of riprap and leveling ships that are not suitable for the existing technology are met, and the applicability of the device in different waters, ship structures and construction conditions is expanded.

[0041] As a preferred embodiment of the present invention, when the torque of the driving unit 1 reaches a first threshold, the brake 2 switches to a first state, and when the torque of the driving unit 1 decreases to a second threshold, the brake 2 switches to a second state, and the first threshold is greater than the second threshold.

[0042] Specifically, when the torque of the driving unit 1 reaches a first threshold, the brake 2 is turned on, and the driving unit 1 drives the reducer 3 to achieve the conversion from high speed and small torque to low speed and large torque; when the torque of the driving unit 1 is reduced to a second threshold, for example, the speed of the driving unit 1 is close to 0, that is, the torque of the driving unit 1 is close to 0, the brake 2 is switched to the second state, that is, the brake 2 is closed, and the rotation is stopped.

[0043] The reason why the brake 2 is turned on after the torque of the driving unit 1 reaches a certain torque is that, assuming that before the brake 2 is turned on, the riprap tube 300 and the retaining frame 200 are at a certain angle or horizontal state, at this time, their static posture is completely maintained by the friction torque generated by the brake 2. If the brake 2 is suddenly released, its posture will be uncontrolled and free to rotate under the torque generated by the deadweight of the riprap tube 300 and the retaining frame 200. In more serious cases, it may cause the car to run away and cause a serious accident. Therefore, in order to ensure the safety and reliability of the operation during operation, before the brake 2 is turned on, the driving unit 1 should have a certain torque to ensure that after the brake 2 is turned on, the above situation can be effectively avoided, and then it can run according to the designed speed and trajectory.

[0044] It is worth noting that the first threshold value can be determined according to the external loads such as the riprap tube, the retaining frame and other ancillary equipment, that is, it can be set according to the actual maximum torque generated by the weight of the riprap tube 300, the retaining frame 200, etc.; in addition, the first threshold value can also be set according to the rated output torque of the reducer 3. As a preferred embodiment of the present invention, the first threshold value can be 1.2 to 1.5 times the sum of the torques of other external loads generated by the sum of the gravity of the riprap tube 300 and the retaining frame 200. For example, the value of the first threshold value is set to 1.2 times, 1.3 times, 1.4 times or 1.5 times the sum of the gravity torque of the riprap tube 300 and the retaining frame 200 and other external load torques. Other external loads here include water flow force, wind load and the dead weight of other ancillary equipment.

[0045] As a preferred embodiment of the present invention, the flipping device may further include an angle sensor 6, which is disposed on the retaining frame 200 and can be used to detect the angular displacement of the retaining frame 200. Specifically, the angle sensor 6 can convert the change of mechanical rotation or angular displacement into an electrical signal output to achieve the position, angular displacement and alignment control of the retaining frame 200 and the riprap tube 300. For example, when the brake 2 is in the first state and the rotating spindle 4 drives the retaining frame 200 to rotate circumferentially, the angle sensor 6 can be used to detect the angular displacement of the retaining frame 200 so that the retaining frame 200 can be accurately rotated to the set angle position.

[0046] Specifically, the angle sensor 6 can be connected to the PLC control system. When the riprap and leveling ship is operating normally, the riprap tube is in a vertical state, and this state is determined as the zero position during the equipment debugging. At the zero position, there are insertion and removal actions. When the pin is inserted, the relative position of the retaining frame 200 and the sliding trolley 400 remains fixed; after the pin is removed, the retaining frame 200 can rotate freely relative to the sliding trolley 400. Therefore, after the pin is removed, with the action of the flipping device, the retaining frame 200 and the riprap tube 300 begin to rotate circumferentially around the axis of the rotating main shaft 4. When it is about to reach or reaches the predetermined angle position, the angle sensor 6 will feed back the corresponding signal to the PLC system, and the PLC will execute the corresponding procedures such as deceleration or braking.

[0047] As a preferred embodiment of the present invention, the turning device may further include a flange 7 and a baffle 8. Figure 2 and Figure 3 The flange 7 is fixedly connected to the outer end surface of the holder 200, and the driven end 42 of the rotating main shaft 4 is sleeved inside the flange flange 7 and key-connected with the flange flange 7. Specifically, the center of the flange flange 7 can be an inner spline hollow shaft structure, which is installed on the spline shaft of the driven end 42 of the rotating main shaft 4, and the flange flange 7 is connected to the outer end surface of the flange of the holder 200 by high-strength bolts.

[0048] Such as 3 and Figure 7 As shown, the retaining frame 200 has a first hollow boss 201 inside, and the driven end 42 of the rotating main shaft 4 has an extension section 421, which extends into the first hollow boss 201, and the baffle 8 is axially abutted against the end of the first hollow boss 201, and axially, the baffle 8 is also attached to and fixedly connected with the extension section 421 of the driven end, wherein the baffle 8 can be a column with a flat axial end face, and its structure can also be slightly modified on the basis of the column to make the baffle 8 and the extension section 421 more securely connected.

[0049] As a preferred embodiment of the present invention, Figure 4 As shown, along the radial direction, the baffle 8 includes a first portion 81 and a second portion 82, the first portion 81 abuts against the end of the first hollow boss 201 along the direction of the axis m, and the second portion 82 is attached to and fixedly connected with the extension section 421 of the rotating main shaft 4 along the direction of the axis m. Specifically, the first portion 81 can be two sections, which are respectively connected to the top and bottom ends of the second portion 82. As a preferred embodiment of the present invention, the middle portion of the second portion 82 of the baffle 8 has a groove 80, and the groove 80 is spaced apart from the end face of the extension section 421 of the rotating main shaft 4. The purpose of providing the groove 80 is to prevent the contact connection between the baffle 8 and the end face of the extension section 421 due to unevenness.

[0050] As a preferred embodiment of the present invention, the baffle plate 8 may also be provided with a through hole for passing bolts, and the baffle plate 8 is bolted to the extension section 421 of the rotating main shaft 4, and the bolts between the baffle plate 8 and the extension section 421 are arranged in a staggered manner along the circumference of the axis. In this way, by connecting the baffle plate 8 to the end of the extension section 421 and pressing the baffle plate 8 against the inner end surface of the flange of the retainer 200, the baffle plate 8 can fix the retainer 200 to transmit axial force or prevent the retainer 200 from axial displacement, and the bolts are arranged in a staggered manner along the circumference, so that the baffle plate and the extension section can obtain a more reliable connection and a greater load-bearing capacity.

[0051] Figure 5 and Figure 6 They are a cross-sectional view and a side view of the flange. As a preferred embodiment of the present invention, the flange 7 may include a base 72 and a body 71 disposed on the base, and the driven end 42 of the rotating spindle 4 is sleeved inside the body 71 and connected to the body 71. Optionally, the outer periphery of the base 72 is further provided with screw holes arranged in a circumferentially staggered manner, and the bolts between the flange 7 and the retainer 200 are arranged in a circumferentially staggered manner along the axis, and the base 72 of the flange 7 is fixedly connected to the outer end surface of the retainer 200 to obtain a more reliable connection and a greater load-bearing capacity.

[0052] In addition, in order to prevent fatigue fracture of the connection part between the main body 71 of the flange 7 and the base 72 due to stress concentration, a rib plate 70 is additionally provided, and the two ends of the rib plate 70 are respectively connected to the base 72 and the main body 71 to enhance the rigidity of the flange 7.

[0053] Furthermore, in order to further improve the stress level of the flange 7, as a preferred embodiment of the present invention, the flange 7 is made of alloy steel for forgings, the ribs 70 are made of low-alloy high-strength steel, and the ribs 70 are welded to the flange 7. The reason why the flange 7 and the ribs 70 are made of different materials is that the flange flange has a higher rigidity requirement, so alloy steel for forgings is selected, and although alloy steel for forgings has higher rigidity, it is not easy to weld. In order to better connect the ribs 70 and the flange 7, the material of the ribs 70 is selected as low-alloy high-strength steel that is easier to weld for ease of operation and economic cost considerations.

[0054] As a preferred embodiment of the present invention, Figure 7 and Figure 8As shown, along the axial direction, the first hollow boss 201 of the retainer may include a first hollow portion 2011 and a second hollow portion 2012, the inner diameter of the second hollow portion 2012 is larger than the inner diameter of the first hollow portion 2011, and the baffle 8 is located in the second hollow portion 2012. The extension section 421 of the rotating main shaft 4 extends into the first hollow portion 2011 and is attached to and fixedly connected with the baffle 8 along the axial direction, and the baffle 8 is axially abutted against the inner end surface of the second hollow portion 2012. Preferably, the groove 80 of the second portion 82 of the baffle 8 is attached to and fixedly connected with the first hollow portion 2011 along the axial direction, and the first portion 81 of the baffle 8 is abutted against the inner end surface of the second hollow portion 2012 along the axial direction. Optionally, the second hollow portion 2012 is located on the side of the first hollow portion 2011 away from the extension section 421.

[0055] like Figure 1 and Figure 2 As shown, as a preferred embodiment of the present invention, there are two support seats, one each at the driving end and the driven end, namely, the driving end support seat 51 and the driven end support seat 52, which are rigidly connected to the sliding trolley 400 respectively, and the two ends of the rotating main shaft 4 are independently supported, with a large span in the middle, and the two ends are supported on the support seats, namely, the driving end 41 and the driven end 42 of the rotating main shaft are supported on the driving end support seat 51 and the driven end support seat 52 respectively. Specifically, there is a certain distance between the two support seats, and the numerical range of the distance is not limited, and can be selected accordingly according to actual conditions. For example, the above distance can be adjusted according to the project construction technical requirements and the environmental conditions of the construction water area. Under normal circumstances, under construction environmental conditions with greater resistance, the value of this distance may increase.

[0056] In addition, the reducer 3 also has a mounting flange, which is connected to the drive end support seat 51 by high-strength bolts, so that when the flip device is working, the torque generated by external loads such as water flow force, wind load, retaining frame, riprap pipe and the dead weight of other auxiliary equipment can be smoothly transmitted to the drive end support seat 51 through the reducer 3 housing. It should be noted that during normal operation, the force environment of the driven end 42 of the rotating main shaft 4 is complex. It not only has to transmit torque, but also has to withstand huge radial force, bending moment and axial force. Therefore, under the premise of meeting the requirements of the function, safety and economy of the whole machine, it is usually possible to reasonably distribute the force generated by the external load through the selection of materials, structural form (such as support seat height, width, support seat spacing, etc.) and connection method design to ensure that the bearing capacity of the single-point support meets the use requirements, so as to transmit the torque more clearly and reasonably.

[0057] As a preferred embodiment of the present invention, the driving end 41 and the driven end 42 of the rotating main shaft 4 are supported by the driving end support seat 51 and the driven end support seat 52 respectively through spherical roller bearings. That is, by assembling the spherical cylindrical roller bearings in the support seat, the support seat has the ability of automatic self-alignment, so that the support seat can bear a large radial load and a large bidirectional axial load, and can also compensate for the angular deviation caused by the installation or deflection of the rotating main shaft 4.

[0058] As a preferred embodiment of the present invention, the driving part 1 is a hydraulic motor, the brake 2 is a hydraulic multi-disc brake, the reducer 3 is a planetary gear reducer, the hydraulic motor drives the planetary gear reducer through a spline pair, and the driving end 41 of the rotating main shaft 4 is connected to the planetary gear reducer through a spline pair. Among them, the hydraulic motor has the characteristics of small size, high efficiency, and stable operation, and can realize stepless speed regulation. When the hydraulic motor is working, the oil pressure provided by the hydraulic pump station is converted into output torque, thereby providing driving force for the entire device; the hydraulic multi-disc brake is in a normally closed state, and the spring alternately presses the steel brake disc and the copper brake disc to achieve braking, and the friction force is converted into braking torque through thrust; the planetary gear reducer occupies a small space and has a compact structure, and can provide a large transmission ratio and rated output torque; the rotating main shaft can be made of alloy structural steel for forgings to obtain good low-temperature impact toughness and high fatigue limit and the ability to resist multiple impacts, so as to cope with complex stress environments.

[0059] It should be noted that the multi-disc brake includes components such as friction plates, sleeves, pistons, cylinders, springs and brake discs. The piston is installed in the cylinder and a spring is installed in the piston. The friction plate and sleeve are connected by a spline pair. The left and right inner holes of the sleeve are each machined with an internal spline. The left and right internal splines are respectively connected to the external splines on the reducer input shaft and the external splines on the hydraulic motor output shaft. In addition, the braking torque can be adjusted by increasing (reducing) the number of brake discs and friction plates, so as to adjust the braking torque according to the different requirements of different equipment. During specific operation, pressurized oil is introduced into the oil cylinder. Under the action of the pressurized oil, the piston moves toward the rear cover, compressing the spring and releasing the top pressure on the brake disc and friction plate, so that the brake disc and friction plate are separated, thereby releasing the brake, that is, the brake is opened; during braking, the pressurized oil in the oil cylinder is released, the spring releases the pressure, and at the same time pushes the piston to move toward the front cover, and the piston squeezes the brake disc and friction plate. Since the inner spline on the friction plate is connected to the outer spline on the motor shaft, the motor stops under the action of friction force, realizing the holding brake, that is, the brake is in the closed state.

[0060] Specifically, when the turning device is working, the hydraulic motor drives the planetary gear reducer through the spline pair to realize the conversion from high speed and small torque to low speed and large torque, and then transmits the low speed and large torque to the rotating main shaft 4. The rotating main shaft 4 transmits the torque to the flange 7 through the spline pair, driving the riprap tube 300 and the retaining frame 200 to realize the full circumference 360° movement and parking retention in the vertical plane. Optionally, the driving part can also be an electric motor, and the brake can be other types of brakes. However, in comparison, the hydraulic motor, hydraulic multi-disc brake and planetary gear reducer are arranged coaxially with the rotating main shaft 4, the support seat 5, etc., which can make the lateral size more compact and the assembly performance better.

[0061] Usually, when the riprap leveling ship is in maintenance mode and dispatching mode, it is necessary to lift the riprap tube out of the water. Taking the flipping device in which the driving part 1 is a hydraulic motor, the brake 2 is a hydraulic multi-disc brake, and the reducer 3 is a planetary gear reducer as an example, the working process of the flipping device in the above two modes is specifically explained.

[0062] Maintenance Mode:

[0063] 1. The hydraulic pump station starts to supply oil to the hydraulic motor, converting the pressure energy of the liquid into mechanical energy;

[0064] 2. After the hydraulic motor has a certain initial torque (i.e., the torque output by the hydraulic motor reaches a first threshold), the hydraulic multi-disc brake switches to the first state (i.e., the brake is open);

[0065] 3. The hydraulic motor drives the planetary gear reducer through a spline pair to achieve the conversion from high speed and low torque to low speed and high torque;

[0066] 4. The driving end of the rotating spindle is connected to the planetary gear reducer, and the planetary gear reducer transmits the torque to the rotating spindle through the spline pair;

[0067] 5. The rotating spindle transmits torque to the flange through the spline pair;

[0068] 6. Since the flange is fixedly connected to the cage, the flange can drive the cage and the riprap tube to rotate circumferentially to achieve the switch from the working posture (the length direction is perpendicular to the horizontal plane) to the maintenance posture (the length direction is at a certain angle to the horizontal plane). The usual angle range is between 0 and 90 degrees, such as 60 or 80 degrees. The angle value range here is not limited and can be selected according to actual maintenance needs.

[0069] 7. When the rotation reaches a position close to the set angle, the hydraulic motor starts to decelerate;

[0070] 8. When the speed of the hydraulic motor decreases, for example, close to 0 (i.e., the torque output by the hydraulic motor decreases to the second threshold), the hydraulic multi-disc brake switches from the first state to the second state (i.e., the brake changes from the open mode to the closed mode), the riprap tube and the retaining frame stop rotating and remain at the set angle position, thereby achieving the braking and holding of the retaining frame. At this time, the leveling head is above the deck surface, which is convenient for daily maintenance and repair. There is no limit on the numerical range of the set angle, which can be selected according to actual maintenance and repair needs.

[0071] Dispatch Mode:

[0072] 1. The hydraulic pump station starts to supply oil to the hydraulic motor, converting the pressure energy of the liquid into mechanical energy;

[0073] 2. After the hydraulic motor has a certain initial torque, the hydraulic multi-disc brake switches to the first state (i.e. the brake is open);

[0074] 3. The hydraulic motor drives the planetary gear reducer through a spline pair to achieve the conversion from high speed and low torque to low speed and high torque;

[0075] 4. The driving end of the rotating spindle is connected to the planetary gear reducer, and the planetary gear reducer transmits the torque to the rotating spindle through the spline pair;

[0076] 5. The rotating spindle transmits torque to the flange through the spline pair;

[0077] 6. Since the flange is fixedly connected to the retainer, the flange can drive the retainer and the riprap tube to rotate circumferentially, realizing the switching from the working posture (the length direction is perpendicular to the horizontal plane) to the resting posture (the length direction is parallel to the horizontal plane);

[0078] 7. When the rotation reaches a position close to the set angle, the hydraulic motor starts to decelerate;

[0079] 8. When the speed of the hydraulic motor decreases, for example, close to 0, the hydraulic multi-disc brake switches from the first state to the second state (i.e., the brake changes from the open mode to the closed mode), the riprap tube and the retaining frame stop rotating and remain at the set angle position, thereby achieving the braking and holding of the retaining frame. At this time, the leveling head is in a shelved state with a low center of gravity, eliminating the complicated sea-binding process.

[0080] In the above two modes, the working process of the flipping device is roughly the same, the only difference is that the final maintained angle position is different. In the maintenance mode, the length direction of the riprap tube is at a certain angle to the horizontal plane, while in the dispatching mode, the length direction is parallel to the horizontal plane.

[0081] Correspondingly, a specific embodiment of the present invention further provides a riprap and leveling boat, comprising a retaining frame 200, a riprap tube 300, a sliding trolley 400 and a turning device for the riprap and leveling boat provided by the present invention, the riprap tube 300 is fixed inside the retaining frame 200, the rotating main shaft 4 is supported on the sliding trolley through a supporting seat, the riprap and leveling boat may further include a track 500 and a drag chain, the track 500 is transversely arranged on the riprap and leveling boat, and its direction is consistent with the axial direction of the turning device, and the sliding trolley 400 slides on the track 500; one end of the drag chain is connected to the sliding trolley 400, and the other end is connected to the riprap and leveling boat.

[0082] The turning device for a riprap leveling ship provided by the present invention connects a driving part, a brake, a reducer, a rotating main shaft and a retaining frame in sequence. The rotating main shaft is supported on a sliding trolley through a supporting seat, and the riprap pipe is further fixed by arranging a baffle plate and a flange to prevent the retaining frame from generating axial displacement.

[0083] The torque provided by the driving part is decelerated and increased by the reducer. When the brake is in the first state, the rotating main shaft is driven to rotate, thereby driving the retaining frame to rotate to the set position, and then the brake is switched to the second state to stop the rotation of the retaining frame and keep it at the set position, so that the posture of the riprap pipe and the position of the leveling head can be freely adjusted, which effectively improves the ship's dispatching capability and the safety and operability during the maintenance and maintenance of key components, optimizes the posture of the riprap pipe during dispatching navigation, reduces the center of gravity height of the entire ship, reduces the requirements for ship stability, and meets the needs of daily maintenance work and dispatching navigation for riprap and leveling ships that are not suitable for existing technologies.

[0084] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A turning device for a riprap leveling ship, the riprap leveling ship having a retaining frame, a riprap tube and a sliding trolley, the riprap tube being fixed inside the retaining frame, characterized in that: include: The drive unit, brake, reducer, rotating spindle and support seat are coaxially arranged; wherein, The driving part, the brake, the speed reducer and the driving end of the rotating main shaft are connected in sequence, the driven end of the rotating main shaft is used to be connected to the retaining frame, and the rotating main shaft can be supported on the sliding trolley through the supporting seat; When the brake is in the first state, the driving unit can drive the reducer and transmit the torque to the rotating main shaft, and the rotating main shaft can drive the retaining frame to rotate in a circumferential direction, and the circumferential direction surrounds the axis; When the brake is switched from the first state to the second state, the holder stops rotating and remains at a set angle position; when the torque of the driving unit reaches a first threshold, the brake is switched to the first state, and when the torque of the driving unit decreases to a second threshold, the brake is switched to the second state, and the first threshold is greater than the second threshold; The flipping device further includes: an angle sensor, disposed on the holder, for detecting an angular displacement of the holder; A flange is fixedly connected to the outer end surface of the retainer, and the driven end of the rotating spindle is sleeved inside the flange and key-connected to the flange; The baffle plate has a first hollow boss inside the retaining frame, the driven end of the rotating spindle has an extension section, the extension section extends into the first hollow boss, the baffle plate abuts against the end of the first hollow boss along the axial direction, and the baffle plate is axially attached to and fixedly connected with the extension section.

2. The turning device according to claim 1, characterized in that: The first threshold is 1.2 to 1.5 times the sum of the gravity moment of the retaining frame, the gravity moment of the riprap pipe, and other external load moments.

3. The turning device according to claim 1, characterized in that: The flange includes a base and a main body portion arranged on the base, the base is fixedly connected to the outer end surface of the retaining frame, the driven end of the rotating spindle is sleeved inside the main body portion and connected to the main body portion; it also includes a rib plate, the two ends of the rib plate are respectively connected to the base and the main body portion.

4. The turning device according to claim 1, characterized in that: In the radial direction, the baffle includes a first part and a second part, the first part is axially abutted against the end of the first hollow boss, the second part is axially abutted against and fixedly connected to the extension section, and the second part has a groove in the middle, and the groove is spaced apart from the end face of the extension section.

5. The turning device according to claim 1, characterized in that: Along the axial direction, the first hollow boss includes a first hollow part and a second hollow part, the inner diameter of the second hollow part is larger than the inner diameter of the first hollow part, and the baffle is located in the second hollow part; the extension section extends into the first hollow part and is axially attached to and fixedly connected with the baffle, and the baffle is axially abutted against the inner end surface of the second hollow part.

6. The turning device according to claim 1, characterized in that: The flange is connected to the retaining frame by bolts, and the baffle is connected to the extension section by bolts.

7. The turning device according to claim 6, characterized in that: The bolts between the flange and the retaining frame are arranged in a circumferentially staggered manner, and the bolts between the baffle and the extension section are arranged in a circumferentially staggered manner.

8. The turning device according to claim 1, characterized in that: The support seat includes: a driving end support seat and a driven end support seat, the driving end support seat and the driven end support seat are respectively connected to the sliding trolley, and the driving end and the driven end of the rotating main shaft are respectively supported by the driving end support seat and the driven end support seat.

9. The turning device according to claim 8, characterized in that: The driving end and the driven end of the rotating main shaft are supported on the driving end support seat and the driven end support seat respectively through spherical roller bearings.

10. The turning device according to claim 1, characterized in that: The driving part is a hydraulic motor, the brake is a hydraulic multi-disc brake, the reducer is a planetary gear reducer, the hydraulic motor drives the planetary gear reducer through a spline pair, and the rotating main shaft driving end is key-connected to the planetary gear reducer.

11. A riprap leveling ship, characterized in that: It comprises a retaining frame, a riprap tube, a sliding trolley and a turning device for a riprap-leveling ship as claimed in any one of claims 1 to 10, wherein the riprap tube is fixed inside the retaining frame, and the rotating main shaft is supported on the sliding trolley through the supporting seat.

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