A lifting and piling system with adjustable height and a height adjustment method

Abstract

This invention relates to the field of marine engineering technology, and provides a lifting and piling system with adjustable height and a height adjustment method. The adjustable-height lifting and piling system includes a rotating platform with a winch mounted on it; a main boom oscillatingly connected to the rotating platform; a strut located on one side of the main boom along its swing direction, with one end oscillatingly connected to the rotating platform and the other end equipped with a luffing pulley assembly; a cable, one end of which is connected to the winch, and the other end of which passes over the luffing pulley assembly and connects to the main boom; and a tie rod located on the side of the strut away from the main boom, one end of which is detachably connected to the rotating platform, and the other end oscillatingly connected to the end of the strut away from the rotating platform. This invention overcomes the technical problem in existing rotary lifting or rotary piling systems where the fixed height of the triangular support often fails to meet navigation height restrictions, leading to obstructed passage.

Description

Technical Field

[0001] This invention relates to the field of marine engineering technology, and in particular to a lifting and piling system with adjustable height and a height adjustment method. Background Technology

[0002] Rotary lifting systems or rotary piling systems are commonly used in the construction of pile foundations for marine engineering projects such as high-pile wharves and large bridges. Besides one connecting to the lifting structure and the other to the piling structure, both typically include a rotatable rotating platform and a boom that swings and connects to the rotating platform. The boom is connected to a winch on the rotating platform via cables, allowing the boom's angle to be adjusted by raising and lowering the cables. Along the boom's swing direction, an A-frame is installed on one side of the boom. The A-frame generally includes struts and tie rods; the lower end of the struts is connected to the rotating platform, and the upper end faces away from the boom. The arm is tilted in the direction of the boom; the tie rod is located on the side of the strut away from the main boom, and its axis is nearly vertical. Its lower end is connected to the rotating platform, and its upper end is connected to the upper end of the strut, thus forming a triangular support together with the strut and the rotating platform; the top of the triangular support is equipped with a variable amplitude pulley block for winding and tensioning the cable. Therefore, the triangular support often has a certain height. However, this also means that when the rotary lifting system or rotary piling system encounters navigation height restrictions, the triangular support will obstruct passage. Therefore, a triangular support that can meet the cable tensioning requirements and reduce the height is needed. Summary of the Invention

[0003] The purpose of this invention is to overcome the technical problem that the fixed height of the triangular support in existing rotary lifting systems or rotary piling systems often fails to meet the requirements of navigation height restrictions, resulting in obstructed passage. This invention provides a lifting and piling system with a lower height and a height adjustment method.

[0004] In a first aspect, the present invention provides a lifting and piling system with a reduced height, comprising:

[0005] A rotating platform, on which a winch is installed;

[0006] Main boom, which is oscillatingly connected to the rotating platform;

[0007] The strut is located on one side of the main boom along the swing direction of the main boom. One end of the strut is swayed and connected to the rotating platform, and the other end of the strut is equipped with a variable amplitude pulley assembly.

[0008] The cable is connected to the winch at one end and to the main boom at the other end, which passes over the luffing pulley assembly.

[0009] The tie rod is located on the side of the strut away from the main boom. One end of the tie rod is detachably connected to the rotating platform, and the other end of the tie rod is swung and connected to the end of the strut away from the rotating platform.

[0010] The height-reducing lifting and piling system of this scheme connects the tie rod, strut, and rotating platform, with swing connections between the tie rod and strut, and between the strut and rotating platform. The tie rod and rotating platform are detachably connected. When the tie rod is disconnected from the rotating platform, the tie rod and strut can be equivalent to a two-bar linkage connected to the rotating platform. The strut can swing relative to the rotating platform, thereby adjusting the height of the highest point of the strut to adapt to different navigation height restrictions. The tie rod can swing relative to the strut, thereby changing the tilt angle of the tie rod, so that the planar linkage structure formed by the tie rod, strut, and rotating platform approaches, reaches, or moves away from the dead point position.

[0011] Furthermore, the combination of the swinging of the tie rod relative to the strut and the swinging of the strut relative to the rotating platform allows the end of the tie rod near the rotating platform to translate in the direction of approaching or moving away from the main boom. This maintains a constant horizontal height at the end of the tie rod near the rotating platform, ensuring that the tie rod remains against the rotating platform during its swing. This prevents the tie rod from detaching from the rotating platform and swinging uncontrollably, which could lead to safety accidents, thus ensuring the safety of this solution. At the same time, keeping the tie rod against the rotating platform also facilitates the rapid restoration of the tie rod's position when passing through navigation height-restricted areas without the assistance of external equipment, allowing for faster deployment in subsequent lifting or piling operations.

[0012] When the tie rod is connected to the rotating platform, the tie rod, the support rod, and the rotating platform can be combined together to form a triangular planar linkage structure with zero degrees of freedom to stably support the variable amplitude pulley block, thereby meeting the tensioning requirements of the cable. Furthermore, since the tilt angle of the tie rod is adjustable, this solution can also adjust the angle of the tie rod to bring the two-bar linkage formed by the tie rod and the support rod closer to or into the dead point position, thereby further ensuring the structural stability of this solution.

[0013] Preferably, it further includes a first telescopic device, one end of which is connected to the rotating platform, and the other end of which is hinged or abutted against the end of the pull rod near the rotating platform. The extension and retraction of the first telescopic device can cause the pull rod to swing relative to the support rod.

[0014] This solution can, on the one hand, drive the lever to swing through the first telescopic device, thereby achieving automated control of the lever's swing; on the other hand, it can also guide the lever's swinging motion through the first telescopic device, preventing the lever from deviating or tilting outside the swing plane during the swinging process, thereby further preventing the lever from swinging without restraint and causing safety accidents, and ensuring the safety of this solution.

[0015] Preferably, it also includes a connecting pin; a first limiting hole is provided at one end of the pull rod near the rotating platform, and a second limiting hole is provided at the corresponding position on the rotating platform. The connecting pin passes through the first limiting hole and the second limiting hole, and inserting or removing the connecting pin can connect or separate the pull rod from the rotating platform.

[0016] This solution recommends one specific detachable connection method between the tie rod and the rotating platform, with the connecting pin having the advantages of high load-bearing capacity and convenient assembly and disassembly.

[0017] Preferably, it further includes a second telescopic device, one end of which is connected to the rotating platform, and the other end of which is connected to or abuts against the connecting pin. The telescopic extension and retraction of the second telescopic device can drive the connecting pin to move in and out of the first limiting hole and the second limiting hole.

[0018] This solution can, on the one hand, drive the insertion and removal of the connecting pin through the second telescopic device, thereby realizing the automated control of the insertion and removal of the connecting pin; on the other hand, it can also maintain the connection between the connecting pin and the rotating platform through the second telescopic device, preventing the connecting pin from rolling freely or even being lost after being pulled out.

[0019] Preferably, the end of the main boom furthest from the rotating platform is connected to a lifting structure or a piling structure;

[0020] The lifting structure includes a lifting pulley block and a hook. The lifting pulley block is connected to the end of the main boom away from the rotating platform, and the hook is connected to the winch by a cable that passes around the lifting pulley block.

[0021] The piling structure includes a pile frame and a telescopic support frame. The pile frame is oscillatingly connected to the end of the main boom away from the rotating platform, and the pile frame is connected to a pile hammer, pile cap, and pile gripper. The telescopic support frame is hinged to the rotating platform and the pile frame at both ends, and the length of the telescopic support frame is adjustable, which can drive the pile frame to oscillate relative to the main boom.

[0022] This solution configures the main boom to be detachably connected to both the lifting and piling structures. When the lifting structure is installed on the main boom, this solution can be used as a lifting system, utilizing the rotation of the rotating platform, the luffing motion of the main boom, and the retraction / extension of the winch to perform lifting actions such as hook lowering, hook raising, and position adjustment. When the piling structure is installed on the main boom, this solution can be used as a piling system, utilizing the rotation of the rotating platform, the luffing motion of the main boom, the retraction / extension of the winch, and the telescopic support frame to perform piling actions such as pile picking, pile driving, and position adjustment. In other words, this solution has both lifting and piling capabilities, achieving multi-purpose functionality for both the rotating platform and the main boom. Compared to dedicated piling or lifting systems, this solution offers higher economic benefits.

[0023] Preferably, the end of the main boom away from the rotating platform includes a first steel box structure, which is used to connect the lifting structure or the pile frame.

[0024] This design adds a first steel box structure to the main boom, which improves the load-bearing capacity and rigidity of the corresponding area of ​​the main boom. This allows it to adapt to both lifting and piling operations, ensuring the structural stability of the design under both conditions. Furthermore, the first steel box structure has numerous flat surfaces, making it easier to arrange the pulley blocks required for the winch and the hinges required for the pile frame.

[0025] Preferably, the end of the pile frame near the main boom includes a second steel box structure for connecting the pile hammer.

[0026] This design adds a second steel box structure to the pile frame, which improves the load-bearing capacity and rigidity of the corresponding area of ​​the pile frame, ensuring the structural stability of the design under piling conditions. At the same time, the second steel box structure has a large number of flat surfaces, making it easier to connect the pile hammer.

[0027] Preferably, a support bracket is also provided on one side of the rotating platform to support the end of the main arm away from the rotating platform.

[0028] This solution can improve the stability of the main boom during transportation by using a support bracket.

[0029] In a second aspect, the present invention provides a height adjustment method for a lifting and piling system, applicable to a lifting and piling system of the present invention that can be lowered in height, comprising the following steps:

[0030] S1. By raising and lowering the cable using a winch, the angle between the main boom and the horizontal plane is reduced until the highest point of the main boom is lower than the predetermined height.

[0031] S2. Disconnect the tie rod from the rotating platform and adjust the tilt angle of the tie rod until the end of the tie rod closest to the rotating platform is biased towards the direction of the main boom;

[0032] S3. Loosen the cable using a winch to reduce the angle between the strut and the horizontal plane until the highest point of the strut is below the predetermined height.

[0033] The height adjustment method of the lifting and piling system in this solution corresponds to the lifting and piling system with a lowerable height of the present invention. When the height of the entire lifting and piling system with a lowerable height needs to be reduced due to navigation height restrictions, the connection between the tie rod and the rotating platform is released, allowing the tie rod to swing around the support rod in the direction of the main boom. This allows the two-bar linkage formed by the tie rod and the support rod to move away from the dead point position, thereby allowing the support rod to swing downward relative to the rotating platform to reduce the height and meet the navigation height restriction requirements.

[0034] Furthermore, the combination of the swing of the tie rod relative to the support rod and the swing of the support rod relative to the rotating platform in this scheme allows the end of the tie rod near the rotating platform to translate in the direction of approaching or moving away from the main arm. That is, it keeps the horizontal height of the end of the tie rod near the rotating platform unchanged. This ensures that the tie rod always keeps against the rotating platform during the swinging process, avoiding the situation where the tie rod swings without restriction after detaching from the rotating platform, which could lead to a safety accident. This ensures that the safety of this scheme is improved.

[0035] Preferably, in step S1, the angle between the main arm and the horizontal plane is reduced until the tension on the tie rod is zero.

[0036] This solution recommends unloading the tension on the tie rod by adjusting the main boom angle before adjusting the tie rod angle. This ensures the stability of the main boom and strut during the tie rod angle adjustment process and reduces the thrust required to adjust the tie rod angle.

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0038] 1. This invention provides a lifting and piling system with a reduced height. It uses a combination of a tie rod, a strut, and a rotating platform to form a triangular planar linkage mechanism with zero degrees of freedom to stably support the luffing pulley block, thereby meeting the tensioning requirements of the cable. When encountering navigation height restrictions, the connection between the tie rod and the rotating platform can be disconnected, allowing the strut and tie rod to swing relative to the rotating platform, thus reducing the height of the strut's highest point and meeting the navigation height restriction requirements. Furthermore, during the swinging process, the end of the tie rod closest to the rotating platform remains in contact with it, preventing unrestricted swinging that could lead to safety accidents and facilitating the rapid restoration of the tie rod's position after passing through the height restriction area.

[0039] 2. This invention provides a height adjustment method for a lifting and piling system, corresponding to a lifting and piling system with a height reduction capability. This system can reduce the height of the highest point of the strut when encountering navigation height restrictions, and the tie rod can maintain contact with the rotating platform during the adjustment process, thus providing high safety. Attached Figure Description

[0040] Figure 1 This is a side view of a lifting and piling system with a reduced height according to the present invention.

[0041] Figure 2 This is a side view of the lifting and piling system of the present invention, which can reduce the height, with the main boom supported on a support frame.

[0042] Figure 3 This is a side view of the lifting and piling system of the present invention with the boom height lowered.

[0043] Figure 4This is a top view of the main boom of a lifting and piling system with a height reduction capability according to the present invention. Figure 1 ;

[0044] Figure 5 This is a top view of the main boom of a lifting and piling system with a height reduction capability according to the present invention. Figure 2 ;

[0045] Figure 6 This is a side view of the telescopic support frame of a lifting and piling system with a reduced height according to the present invention in its extended state.

[0046] Figure 7 This is a top view of the telescopic support frame of a lifting and piling system with reduced height according to the present invention in its extended state.

[0047] Figure 8 This is a top view of the telescopic support frame of a lifting and piling system with a reduced height according to the present invention in its shortened state.

[0048] Figure 9 This is a partial side view of the pile frame of a lifting pile driving system with a reduced height according to the present invention, with the extended frame in the second position.

[0049] Figure 10 This is a partial side view of the pile frame of a lifting pile driving system with a reduced height according to the present invention, with the extended frame in the first position.

[0050] Figure 11 This is a side view schematic diagram of a height-reducible lifting and piling system according to the present invention in the connected piling structure state. Figure 1 ;

[0051] Figure 12 This is a side view schematic diagram of a height-reducible lifting and piling system according to the present invention in the connected piling structure state. Figure 2 ;

[0052] Figure 13 This is a side view schematic diagram of a height-reducible lifting and piling system of the present invention in the state of connection with the lifting structure. Figure 1 ;

[0053] Figure 14 This is a side view schematic diagram of a height-reducible lifting and piling system of the present invention in the state of connection with the lifting structure. Figure 2 ;

[0054] Icons: 1-Base; 2-Rotating platform; 3-Main boom; 31-Segment; 32-First steel box structure; 41-Lifting pulley block; 42-Hook; 51-Pile frame; 511-Extended frame; 512-Second steel box structure; 52-Telescopic support frame; 521-Sleeve; 522-Telescopic cylinder; 53-Pile hammer; 6-Hull; 7-Support bracket; 8-Auxiliary lifting equipment; 91-Strut; 911-Luffing pulley assembly; 92-Tie rod; 921-First telescopic device; 922-Connecting pin. Detailed Implementation

[0055] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0056] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of the present invention is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0057] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but that it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0058] Furthermore, the use of terms such as "first," "second," "third," etc. in terminology is merely for distinguishing identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0059] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as 2, 3, 4, 5, 6, 7, 8, or 9, and can even exceed nine.

[0060] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0061] Example 1

[0062] like Figures 1 to 14 As shown, a lifting and piling system with a lower height includes a base 1, a rotating platform 2, a main boom 3, a strut 91, cables, and tie rods 92. The base 1 is used to connect to the ground or a vehicle, such as a ship hull 6. The rotating platform 2 is rotatably connected to the base 1 via a slewing support and a cycloidal pinwheel, and the rotation angle is greater than or equal to 360°. The rotating platform 2 is equipped with equipment such as a winch, counterweight, operator's cab, and attachment platform. The main boom 3 is oscillatingly connected to the rotating platform 2. The strut 91 is located along the main boom 3. On one side of the swing direction of boom 3, one end of support rod 91 is sway-connected to the rotating platform 2, and the other end of support rod 91 is provided with luffing pulley assembly 911; one end of cable is connected to the winch, and the other end of cable passes around luffing pulley assembly 911 and is connected to the main boom 3; tie rod 92 is located on the side of support rod 91 away from the main boom 3, one end of tie rod 92 is detachably connected to the rotating platform 2, for example, by pin connection, threaded connection or tenon connection, and the other end of tie rod 92 is sway-connected to the end of support rod 91 away from the rotating platform 2.

[0063] In optional implementations, such as Figure 1 and Figure 2 As shown, when the tie rod 92 is connected to the rotating platform 2, the axis of the tie rod 92 is along the direction of the plumb bob. This arrangement allows the two-bar linkage formed by the tie rod 92 and the support rod 91 to be close to the dead point, thereby ensuring the stability of the tie rod 92 and the support rod 91 in supporting the luffing pulley block.

[0064] In an optional embodiment, a first telescopic device 921 is also included. One end of the first telescopic device 921 is connected to the rotating platform 2, and the other end of the first telescopic device 921 is hinged or abutted to the end of the pull rod 92 near the rotating platform 2. The extension and retraction of the first telescopic device 921 can cause the pull rod 92 to swing relative to the support rod 91. The first telescopic device 921 can specifically adopt a telescopic structure such as a hydraulic cylinder, a pneumatic cylinder, or an electric telescopic rod.

[0065] In an optional embodiment, a linear guide structure may be provided between the end of the pull rod 92 near the rotating platform 2 and the rotating platform 2, thereby guiding the pull rod 92 to translate in a direction close to or away from the main arm 3, preventing the pull rod 92 from deviating or tilting outside its swing plane; the linear guide mechanism includes, but is not limited to, slide rails, slide grooves, telescopic rods, etc., whose length is provided in a direction close to or away from the main arm 3.

[0066] In an optional embodiment, a limiting structure may be provided on the rotating platform 2. The limiting structure is located on the side of the pull rod 92 away from the main arm 3, and is used to prevent the pull rod 92 from swinging away from the main arm 3 and causing the pull rod 92 to completely detach from the rotating platform 2. The specific form of the limiting structure includes, but is not limited to, a stop bar, a baffle, or a stop block.

[0067] In an optional embodiment, a connecting pin 922 is also included; a first limiting hole is provided at one end of the pull rod 92 near the rotating platform 2, and a second limiting hole is provided at the corresponding position of the rotating platform 2. The connecting pin 922 passes through the first limiting hole and the second limiting hole, and inserting or removing the connecting pin 922 can connect or separate the pull rod 92 from the rotating platform 2.

[0068] In an optional embodiment, a second telescopic device is further included. One end of the second telescopic device is connected to the rotating platform 2, and the other end is connected to or abuts against the connecting pin 922. The extension and retraction of the second telescopic device can drive the connecting pin 922 in and out of the first limiting hole and the second limiting hole. The second telescopic device can specifically adopt a telescopic structure such as a hydraulic cylinder, a pneumatic cylinder, or an electric telescopic rod.

[0069] In an optional embodiment, the end of the main boom 3 away from the rotating platform 2 is connected to a lifting structure or a piling structure.

[0070] The lifting structure includes a lifting pulley block 41 and a hook 42. The lifting pulley block 41 is connected to the end of the main boom 3 away from the rotating platform 2. The hook 42 is connected to the winch by a cable that passes around the lifting pulley block 41, so that the hook 42 can be raised and lowered by the raising and lowering of the winch.

[0071] The piling structure includes a pile frame 51 and a telescopic support frame 52. The pile frame 51 is sway-connected to the end of the main arm 3 away from the rotating platform 2. A slide rail is provided along the length of the pile frame 51, and a movable hinge seat is slidably connected on the slide rail. From top to bottom, the movable hinge seat is connected to the pile hammer 53, pile cap, and pile gripper, etc., the equipment required for piling, and the pile hammer 53, pile cap, and pile gripper are all connected to the side of the pile frame 51 away from the rotating platform 2. The pile hammer 53, pile cap, and pile gripper can be existing mature products. The telescopic support frame 52 is hinged at both ends to the rotating platform 2 and the pile frame 51, respectively. The length of the telescopic support frame 52 is adjustable, thus enabling it to... Figures 11 to 12 As shown, the pile frame 51 swings relative to the main boom 3; the length adjustment of the telescopic support frame 52 can be achieved by movable or adjustable mechanisms including but not limited to planar connecting rods, gear racks, hydraulic cylinders, air cylinders, electric telescopic rods, etc.

[0072] In an optional embodiment, an extension frame 511 is swayably connected to the end of the pile frame 51 away from the main arm 3. The extension frame 511 has a first position and a second position. When the extension frame 511 swings to the first position, it is attached to the end of the pile frame 51 away from the main arm 3, thereby lengthening the pile frame 51. When the extension frame 511 swings to the second position, it rests against one side of the pile frame 51. For example... Figures 9 to 10 As shown, the extended frame 511 is hinged to the side of the pile frame 51 near the rotating platform 2, and its cross-sectional shape matches that of the pile frame 51; as Figure 10 The image shows the extended frame 511 in the first position, where it can be seen that it fits perfectly at the lower end of the pile frame 51; and Figure 9 The extension frame 511 is shown in the second position, where it can be seen that the extension frame 511 can be placed against the side of the pile frame 51 near the rotating platform 2, thereby avoiding interference with the pile driving operation.

[0073] In an optional embodiment, the main boom 3 includes at least two sequentially connected segments 31 along its length. The segment 31 closest to the rotating platform 2 is oscillatingly connected to the rotating platform 2, and the segment 31 closest to the pile frame 51 is used to connect the lifting structure or the pile frame 51; adjacent segments 31 are detachably connected. Figure 4 The diagram shows the case where the main boom 3 comprises two segments 31. In this case, the main boom 3 is shorter and more flexible, making it more suitable for pile driving operations; as shown... Figure 5 The diagram shows the case where the main boom 3 consists of three segments 31. In this case, the main boom 3 is longer and more suitable for lifting operations.

[0074] In an optional implementation, the cross-sectional area of ​​the segment 31 that is closer to the rotating platform 2 is larger, so as to match the case that the stress of the main arm 3 is greater the closer it is to the rotating platform 2, so that the solution has stronger structural stability.

[0075] In an optional embodiment, the end of the main boom 3 furthest from the rotating platform 2 includes a first steel box structure 32, sometimes referred to as a plate beam structure; the first steel box structure 32 is used to connect the lifting structure or the pile frame 51. Figure 1 , Figures 11 to 14 As shown, a first steel box structure 32 is set on the top of the main boom 3. When the lifting structure is installed, it can be seen that the lifting pulley block 41 and its corresponding support structure are connected to the first steel box structure 32. When the piling structure is installed, it can be seen that the pile frame 51 is hinged to one side of the first steel box structure 32.

[0076] In an optional embodiment, the end of the pile frame 51 near the main boom 3 includes a second steel box structure 512, sometimes referred to as a plate beam structure; the second steel box structure 512 is used to connect the pile hammer 53. Figure 1 , Figures 11 to 12 As shown, the second steel box structure 512 is set at the top of the pile frame 51. It can be seen that the pulley block and rope winding system required by the pile hammer 53 are distributed above and below the second steel box structure 512, thereby ensuring direct force and enabling the pile frame 51 to withstand the load generated by the pile hammer 53 driving the pile.

[0077] In an optional embodiment, a working platform is slidably connected to the pile frame 51. The working platform can move along the length of the pile frame 51 and reach the end of the pile frame 51 away from the main arm 3. Working platforms can be set on both sides of the pile frame 51 along its width direction, that is, on both sides tangential to the rotation direction of the rotating platform 2, so that equipment or personnel can inspect the pile from both sides. The movement of the working platform can be achieved by means including but not limited to wheeled walking, alternating mechanical foot walking, and cable retraction. The working platform can be equipped with an openable and closable movable part to approach and hold the pile, so as to facilitate equipment or personnel to conduct a comprehensive inspection of the pile from all sides. The movement of the movable part can be controlled by various means such as motors, hydraulic cylinders, pneumatic cylinders, and manual operation.

[0078] In an optional embodiment, the telescopic support frame 52 includes at least two sleeves 521 connected in sequence. The sleeve 521 closest to the rotating platform 2 is hinged to the rotating platform 2, and the sleeve 521 closest to the pile frame 51 is hinged to the pile frame 51. A telescopic cylinder 522 is connected between adjacent sleeves 521. The telescopic cylinder 522 can extend and retract to drive the adjacent sleeves 521 to slide relative to each other, thereby changing the length of the telescopic support frame 52. For example... Figure 6 As shown, the telescopic support frame 52 includes three sleeves 521 that are nested in sequence; the sleeves 521 can be box girders with rectangular cross sections to ensure load-bearing capacity.

[0079] In optional implementations, such as Figures 7 to 8As shown, at least two sets of sleeves 521 are arranged tangentially along the width direction of the telescopic support frame 52, i.e., along the rotation direction of the rotating platform 2. Each set of sleeves 521 includes at least two sleeves 521 that are sequentially nested. Intermediate connecting beams connect corresponding sleeves in adjacent sets of sleeves 521. The telescopic cylinder 522 is connected between two adjacent intermediate connecting beams along the length direction of the telescopic support frame 52. This arrangement enhances the structural stability of the telescopic support frame 52, reducing the likelihood of tilting or deformation. It also facilitates... Figures 7 to 8 As shown, two or more rows of telescopic cylinders 522 are arranged along the length of the intermediate connecting beam to enhance the driving force provided by the telescopic support frame 52, thereby enhancing the control capability of the swing of the pile frame 51; the intermediate connecting beam can also be a box girder with a rectangular cross section to ensure the load-bearing capacity.

[0080] In an optional implementation, at least one of the main boom 3 and the pile frame 51 comprises a truss structure. For example... Figure 1 As shown, the main body of the main boom 3 and the pile frame 51 are both truss structures. The main body and diagonal members of the truss structure are made of square steel pipes, and each connection point is reinforced with steel plates.

[0081] In an optional embodiment, a support bracket 7 is further provided on one side of the rotating platform 2, and the distance between the support bracket 7 and the rotating platform 2 matches the length of the main arm 3, so as to enable... Figure 2 , Figure 3 and Figure 14 As shown, when the main boom 3 is lowered, the end of the main boom 3 that is away from the rotating platform 2 is supported; the support bracket 7 can be a single large support or a combination of multiple small supports, depending on the shape of the main boom 3; an auxiliary lifting device 8 can also be set on the side of the rotating platform 2 facing the support bracket 7. The auxiliary lifting device 8 is used for disassembling and assembling lifting structures or piling structures, including but not limited to tower cranes and cranes.

[0082] Example 2

[0083] like Figures 2 to 3 As shown, a height adjustment method for a lifting and piling system, applied to a lifting and piling system with a lowerable height in Embodiment 1, includes the following steps:

[0084] S1. By raising and lowering the cable with a winch, the angle between the main boom 3 and the horizontal plane is reduced until the highest point of the main boom 3 is lower than the predetermined height, and the main boom 3 is supported on the support bracket 7.

[0085] S2. Disconnect the tie rod 92 from the rotating platform 2, and adjust the tilt angle of the tie rod 92 until the end of the tie rod 92 closest to the rotating platform 2 is biased towards the direction of the main boom 3, i.e. Figure 3As shown, the axis of the pull rod 92 is angled with the direction of the plumb bob, and its lower end is closer to the main arm 3 than its upper end. This allows the two-bar linkage formed by the pull rod 92 and the support rod 91 to move away from the dead point. The pull rod 92 no longer obstructs the swing of the support rod 91, allowing the support rod 91 to swing freely under its own weight. Figure 2 and Figure 3 The counterclockwise swing in the middle can greatly reduce the difficulty of adjusting the angle of the strut 91 in the subsequent step S3;

[0086] S3. Loosen the cable by using a winch to reduce the angle between the strut 91 and the horizontal plane until the highest point of the strut 91 is lower than the predetermined height.

[0087] In an optional implementation, after passing through the navigation height restriction area, step S3 further includes the following steps:

[0088] S4. Tighten the cable by winch to increase the angle between the strut 91 and the horizontal plane until the highest point of the strut 91 returns to the initial height before step S3. At this time, the tie rod 92 will automatically deflect clockwise under its own weight and the guiding action of the top surface of the rotating platform 2, thus also returning to its posture before step S2, without the need for additional equipment assistance.

[0089] S5. Restore the connection between the tie rod 92 and the rotating platform 2, so that the degree of freedom of the triangular planar linkage mechanism composed of the tie rod 92, the support rod 91, and the rotating platform 2 is reduced to zero again, and the lifting and piling system that can be lowered in height is restored to a state in which lifting or piling operations can be performed.

[0090] In an optional implementation, in step S1, the angle between the main arm 3 and the horizontal plane is reduced until the tension on the tie rod 92 is zero. The tension of the tie rod 92 can be measured, for example, by setting a tension sensor at the connection between the tie rod 92 and the support rod 91, and / or by setting a tension sensor at the connection between the tie rod 92 and the rotating platform 2, or by manually observing, trying to insert and remove, and trying to swing to confirm the unloading of the tension of the tie rod 92. When the tension of the tie rod 92 is completely unloaded, the pushing and pulling force required to swing the tie rod 92 will be reduced to the minimum.

[0091] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A lifting and piling system with a height reduction capability, characterized in that, Include: A rotating platform (2) is provided with a winch; Main arm (3), which is oscillatingly connected to the rotating platform (2); A strut (91) is located on one side of the main arm (3) along the swing direction of the main arm (3). One end of the strut (91) is swayed and connected to the rotating platform (2). The other end of the strut (91) is provided with a variable amplitude pulley assembly (911). The cable has one end connected to the winch and the other end connected to the main boom (3) after passing over the luffing pulley assembly (911). A pull rod (92) is located on the side of the support rod (91) away from the main arm (3). One end of the pull rod (92) is detachably connected to the rotating platform (2), and the other end of the pull rod (92) is sway-connected to the end of the support rod (91) away from the rotating platform (2). When the pull rod (92) is connected to the rotating platform (2), the axis of the pull rod (92) is along the vertical direction; a limiting structure is provided on the rotating platform (2), the limiting structure is located on the side of the pull rod (92) away from the main arm (3), and the limiting structure is used to prevent the pull rod (92) from swinging away from the main arm (3); It also includes a first telescopic device (921), one end of which is connected to the rotating platform (2), and the other end of which is hinged or abutted to the end of the pull rod (92) near the rotating platform (2). The telescopic device (921) can extend and retract to drive the pull rod (92) to swing relative to the support rod (91).

2. The lifting and piling system with a reduced height according to claim 1, characterized in that, It also includes a connecting pin (922); the end of the pull rod (92) near the rotating platform (2) is provided with a first limiting hole, and the rotating platform (2) is provided with a second limiting hole at the corresponding position. The connecting pin (922) passes through the first limiting hole and the second limiting hole. Inserting or removing the connecting pin (922) can connect or separate the pull rod (92) from the rotating platform (2).

3. The lifting and piling system with a reduced height according to claim 2, characterized in that, It also includes a second telescopic device, one end of which is connected to the rotating platform (2), and the other end of which is connected to or abuts against the connecting pin (922). The telescopic device can extend and retract to drive the connecting pin (922) into and out of the first limiting hole and the second limiting hole.

4. A lifting and piling system with a reduced height according to any one of claims 1 to 3, characterized in that, The end of the main boom (3) away from the rotating platform (2) is connected to a lifting structure or a piling structure; The lifting structure includes a lifting pulley block (41) and a hook (42). The lifting pulley block (41) is connected to the end of the main boom (3) away from the rotating platform (2). The hook (42) is connected to the winch by a cable that passes around the lifting pulley block (41). The piling structure includes a pile frame (51) and a telescopic support frame (52); the pile frame (51) is swayingly connected to one end of the main arm (3) away from the rotating platform (2), and a pile hammer (53), a pile cap and a pile gripper are connected on the pile frame (51); the two ends of the telescopic support frame (52) are respectively hinged to the rotating platform (2) and the pile frame (51), and the length of the telescopic support frame (52) is adjustable, so as to drive the pile frame (51) to swing relative to the main arm (3).

5. A lifting and piling system with a reduced height according to claim 4, characterized in that, The end of the main boom (3) away from the rotating platform (2) includes a first steel box structure (32), which is used to connect the lifting structure or the pile frame (51).

6. A lifting and piling system with a reduced height according to claim 4, characterized in that, The pile frame (51) includes a second steel box structure (512) at one end near the main arm (3), which is used to connect the pile hammer (53).

7. A lifting and piling system with a reduced height according to any one of claims 1 to 3, characterized in that, A support bracket (7) is also provided on one side of the rotating platform (2), which is used to support the end of the main arm (3) away from the rotating platform (2).

8. A height adjustment method for a lifting and piling system, characterized in that, An application to a height-reducible lifting piling system as described in any one of claims 1 to 7, comprising the following steps: S1. By using a winch to raise and lower the cable, the angle between the main boom (3) and the horizontal plane is reduced until the highest point of the main boom (3) is lower than the predetermined height; S2. Disconnect the pull rod (92) from the rotating platform (2), and adjust the tilt angle of the pull rod (92) until the end of the pull rod (92) near the rotating platform (2) is biased towards the direction of the main arm (3); S3. Loosen the cable by the winch to reduce the angle between the strut (91) and the horizontal plane until the highest point of the strut (91) is lower than the predetermined height.

9. The height adjustment method for a lifting and piling system according to claim 8, characterized in that, In step S1, the angle between the main arm (3) and the horizontal plane is reduced until the tension on the pull rod (92) is zero.

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