Lifting piling system capable of reducing height and height adjusting method

Abstract

The invention relates to the technical field of maritime engineering, and provides a lifting piling system capable of reducing the height and a height adjusting method.The lifting piling system capable of reducing the height comprises a rotating platform, and a winch is arranged on the rotating platform; the main arm is connected to the rotating platform in a swinging manner; the supporting rod is located on one side, in the swinging direction of the main arm, of the main arm, one end of the supporting rod is connected to the rotating platform in a swinging mode, and the other end of the supporting rod is provided with a variable-amplitude pulley assembly; one end of the inhaul cable is connected to the winch, and the other end of the inhaul cable bypasses the variable-amplitude pulley assembly and is connected to the main arm; one end of the pull rod is detachably connected to the rotating platform, and the other end of the pull rod is connected to the end, away from the rotating platform, of the supporting rod in a swinging mode. The technical problem that the height of a triangular support in an existing rotary lifting system or rotary piling system is fixed, and the requirement for navigation height limitation cannot be met often, so that passing is blocked can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of marine engineering, and in particular to a lifting and piling system capable of reducing height and a height adjustment method. Background Art

[0002] A rotary crane system or rotary piling system is a device commonly used in pile foundation construction of marine engineering projects such as hydraulic high-pile docks and large bridges. In addition to one being connected to a lifting structure and the other being connected to a piling structure, both generally include a rotatable rotating platform and a main arm swingably connected to the rotating platform; the main arm is connected to a winch on the rotating platform by a cable, so that the angle of the main arm can be adjusted by retracting and releasing the cable by the winch; a herringbone frame is also provided on one side of the main arm along the swing direction of the main arm, and the herringbone frame generally includes a strut and a pull rod, the lower end of the strut is connected to the rotating platform, and the upper end faces away from the main arm. The direction of the arm is inclined; the pull rod is located on the side of the support rod away from the main arm, and the axial direction is close to vertical, the lower end of the pull rod is connected to the rotating platform, and the upper end is connected to the upper end of the support rod, so it is combined with the support rod and the rotating platform to form a triangular bracket; a variable-length pulley block is provided on the top of the triangular bracket for winding and tensioning the cable, so the triangular bracket often has a certain height, but this also causes the rotary lifting system or the rotary piling system to encounter a navigation height limit. The triangular bracket will hinder passage, so a triangular bracket that can meet the cable tensioning requirements and reduce the height is needed. Summary of the invention

[0003] The purpose of the present invention is to overcome the technical problem that the height of the triangular bracket in the existing rotary lifting system or rotary piling system is fixed, which often fails to meet the requirements of the navigation height limit and causes traffic obstruction, and to provide a lifting and piling system that can reduce the height and a height adjustment method.

[0004] In a first aspect, the present invention provides a lifting and piling system capable of being lowered in height, comprising:

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

[0006] A main arm, the main arm is swingably connected to the rotating platform;

[0007] A support rod, the support rod is located on one side of the main arm along the swing direction of the main arm, one end of the support rod is swingably connected to the rotating platform, and the other end of the support rod is provided with a luffing pulley assembly;

[0008] A cable, one end of which is connected to the winch, and the other end of which is connected to the main boom by passing through the luffing pulley assembly;

[0009] The pull rod is located at a side of the support rod away from the main arm, one end of the pull rod is detachably connected to the rotating platform, and the other end of the pull rod is swingably connected to an end of the support rod away from the rotating platform.

[0010] The lifting and piling system with a lowerable height of the present invention interconnects the pull rod, the strut and the rotating platform, and the pull rod and the strut are swingably connected, as well as the strut and the rotating platform, and the pull rod and the rotating platform are detachably connected; when the pull rod is disconnected from the rotating platform, the pull rod and the strut can be equivalent to a two-link mechanism connected to the rotating platform, wherein 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 limits; the pull rod can swing relative to the strut, thereby changing the inclination angle of the pull rod, so that the planar connecting rod structure composed of the pull rod, the strut and the rotating platform approaches, reaches or moves away from the dead point position.

[0011] The swing of the pull rod relative to the support rod and the swing of the support rod relative to the rotating platform are combined, so that the end of the pull rod close to the rotating platform can translate in the direction close to or away from the main arm, that is, the horizontal height of the end of the pull rod close to the rotating platform is kept unchanged, so that the pull rod can always be in contact with the rotating platform during the swing of the pull rod, avoiding the situation where the pull rod swings unlimitedly after the pull rod is separated from the rotating platform and causing a safety accident, thereby ensuring the safety of the present scheme; at the same time, the pull rod and the rotating platform remain in contact, which can also facilitate the rapid restoration of the position of the pull rod without the assistance of external equipment when passing through the navigation height restriction area, thereby more quickly engaging in subsequent lifting or piling operations.

[0012] When the pull rod is connected to the rotating platform, the pull rod, the strut and the rotating platform can be combined into a triangular plane connecting rod structure with zero degree of freedom to firmly support the variable amplitude pulley group, thereby meeting the tensioning requirements of the cable; and because the inclination angle of the pull rod is adjustable, the present scheme can also adjust the angle of the pull rod so that the two-link mechanism composed of the pull rod and the strut is close to or enters the dead point position, thereby further ensuring the structural stability of the present scheme.

[0013] Preferably, it also includes a first telescopic device, one end of which is connected to the rotating platform, and the other end of the first telescopic device is hinged or abutted against one end of the pull rod close to the rotating platform. The telescopic movement of the first telescopic device can drive the pull rod to swing relative to the support rod.

[0014] On the one hand, the present scheme can drive the pull rod to swing through the first telescopic device, thereby realizing automatic control of the swing of the pull rod; on the other hand, the first telescopic device can also guide the swinging movement of the pull rod to prevent the pull rod from deviating or tilting outside the swinging plane during the swinging process, thereby further preventing the pull rod from swinging without restriction and causing safety accidents, thereby ensuring the safety of the present scheme.

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

[0016] This proposal recommends a specific detachable connection method between the pull rod and the rotating platform, and the connecting pin has the advantages of strong load-bearing capacity and convenient disassembly and assembly.

[0017] Preferably, it also includes a second telescopic device, one end of which is connected to the rotating platform, and the other end of the second telescopic device is connected to or abuts against the connecting pin shaft. The telescopic movement of the second telescopic device can drive the connecting pin shaft to enter and exit the first limiting hole and the second limiting hole.

[0018] On the one hand, this solution can drive the plugging and pulling out of the connecting pin through the second telescopic device, thereby realizing automatic control of the plugging and pulling out of the connecting pin; on the other hand, the second telescopic device can also maintain the connection between the connecting pin and the rotating platform to prevent the connecting pin from rolling freely or even being lost after being pulled out.

[0019] Preferably, one end of the main arm away 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 arm away from the rotating platform. The hook is connected to the winch through a cable passing around the lifting pulley block.

[0021] The piling structure includes a pile frame and a telescopic support frame; the pile frame is swingably connected to the end of the main arm away from the rotating platform, and a pile hammer, a pile cap and a pile gripper are connected to the pile frame; the two ends of the telescopic support frame are respectively hinged to the rotating platform and the pile frame, and the length of the telescopic support frame is adjustable, thereby being able to drive the pile frame to swing relative to the main arm.

[0022] This solution configures the main arm in a form that can detachably connect the lifting structure and the piling structure. When the lifting structure is installed on the main arm, this solution can be used as a lifting system, and the rotation action of the rotating platform, the luffing action of the main arm and the retracting and extending action of the winch are combined to realize lifting actions such as hooking down, hooking up, and adjusting the position; when the piling structure is installed on the main arm, this solution can be used as a piling system, and the rotation action of the rotating platform, the luffing action of the main arm, the retracting and extending action of the winch and the telescopic action of the telescopic support frame are combined to realize piling actions such as pile removal, piling, and adjusting the position; that is, this solution has both lifting and piling capabilities, realizing the multi-purpose use of the rotating platform and the main arm. Compared with a dedicated piling system or lifting system, this solution has higher economic benefits.

[0023] Preferably, one end of the main arm away from the rotating platform comprises a first steel box structure, and the first steel box structure is used to connect the lifting structure or the pile frame.

[0024] This solution adds a first steel box structure to the main arm, which can improve the bearing capacity and rigidity of the corresponding area of ​​the main arm, so that it can adapt to both lifting and piling conditions, ensuring the structural stability of this solution under lifting and piling conditions. At the same time, the first steel box structure has a large number of flat surfaces, which is also more convenient for arranging structures such as the pulley block required for the winch and the hinge required for the pile frame.

[0025] Preferably, one end of the pile frame close to the main arm comprises a second steel box structure, and the second steel box structure is used for connecting a pile hammer.

[0026] This solution adds a second steel box structure to the pile frame, which can improve the bearing capacity and rigidity of the corresponding area of ​​the pile frame and ensure the structural stability of this solution under piling conditions. At the same time, the second steel box structure has a large number of flat surfaces, which is also more convenient for connecting the pile hammer.

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

[0028] This solution can assist in supporting the main arm by placing a bracket, thereby improving the stability of the solution during transportation.

[0029] In a second aspect, the present invention provides a method for adjusting the height of a lifting and piling system, which is applied to a lifting and piling system capable of reducing the height of the present invention, and comprises the following steps:

[0030] S1. The winch is used to retract and release the cable to reduce the angle between the main boom and the horizontal plane until the highest point of the main boom is lower than the predetermined height;

[0031] S2, release the connection between the pull rod and the rotating platform, and adjust the inclination angle of the pull rod until the end of the pull rod close to the rotating platform is inclined in the direction of the main arm;

[0032] S3. Loosen the cable by means of a winch to reduce the angle between the support pole and the horizontal plane until the highest point of the support pole is lower than a predetermined height.

[0033] The height adjustment method of the lifting and piling system of the present scheme corresponds to the lifting and piling system that can be lowered in height of the present invention. When the height of the entire lifting and piling system that can be lowered needs to be lowered due to the height limit for navigation, the connection between the pull rod and the rotating platform is released so that the pull rod can swing around the support rod in the direction of the main arm, so that the two-link mechanism composed of the pull rod and the support rod can be moved away from the dead point position, and then the support rod can swing downward relative to the rotating platform to lower the height, thereby meeting the height limit requirement for navigation.

[0034] In the present scheme, the swinging of the pull rod relative to the support rod and the swinging of the support rod relative to the rotating platform are combined, so that the end of the pull rod close to the rotating platform can translate in the direction close to or away from the main arm, that is, the horizontal height of the end of the pull rod close to the rotating platform is kept unchanged. Therefore, during the swinging process of the pull rod, the pull rod can always be against the rotating platform, avoiding the situation where the pull rod swings unlimitedly after being separated from the rotating platform, causing a safety accident, thereby ensuring that the safety of the present 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 pull rod is zero.

[0036] This solution recommends unloading the tension on the tie rod by adjusting the main arm angle before adjusting the tie rod angle. This can ensure that the force on the main arm and the support rod is stable during the adjustment of the tie rod angle and reduce the thrust required to adjust the tie rod angle.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. The present invention provides a lifting and piling system capable of lowering the height. A triangular plane connecting rod mechanism with zero degree of freedom is formed by combining a pull rod, a strut and a rotating platform to stably support a variable-length pulley block, thereby meeting the tensioning requirements of the cable. When a height restriction for navigation is encountered, the connection between the pull rod and the rotating platform can be released so that the strut and the pull rod can swing relative to the rotating platform, thereby lowering the height of the highest point of the strut and meeting the height restriction requirements for navigation. During the swinging process of the pull rod, the end of the pull rod close to the rotating platform can maintain contact with the rotating platform, which can avoid the situation in which the pull rod swings without restriction and causes a safety accident, and is conducive to quickly restoring the position of the pull rod after passing through the height restriction area.

[0039] 2. The present invention provides a height adjustment method for a lifting and piling system, corresponding to a lifting and piling system of the present invention that can lower the height, which can lower the height of the highest point of the support pole when encountering a height restriction for navigation, and the pull rod can maintain contact with the rotating platform during the adjustment process, thus having higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a side view structural schematic diagram of a lifting and piling system capable of reducing height according to the present invention;

[0041] Figure 2 It is a side view structural schematic diagram of a lifting and piling system capable of reducing height of the present invention, in which the main arm is supported in a resting bracket state;

[0042] Figure 3 It is a side view structural schematic diagram of a lifting and piling system capable of lowering height of the present invention, in a state where the swing arm height is lowered;

[0043] Figure 4The schematic diagram of the main arm structure of a lifting and piling system capable of reducing height according to the present invention is shown in a top view. Figure 1 ;

[0044] Figure 5 The schematic diagram of the main arm structure of a lifting and piling system capable of reducing height according to the present invention is shown in a top view. Figure 2 ;

[0045] Figure 6 It is a side structural schematic diagram of a telescopic support frame of a lifting and piling system capable of reducing height according to the present invention in an extended state;

[0046] Figure 7 It is a schematic diagram of the structure of a telescopic support frame of a lifting and piling system capable of reducing height according to the present invention, viewed from above in an extended state;

[0047] Figure 8 It is a schematic diagram of the structure of a telescopic support frame of a lifting and piling system capable of reducing height according to the present invention, viewed from above in a shortened state;

[0048] Fig. 9 It is a partial side structural schematic diagram of a pile frame of a lifting and piling system capable of reducing height according to the present invention, when the extended frame is in a second position;

[0049] Fig.10 It is a partial side structural schematic diagram of a pile frame of a lifting and piling system capable of reducing height of the present invention, when the extended frame is in a first position;

[0050] Fig.11 The side view of the structure of a lifting pile driving system capable of reducing height in the state of connecting the pile driving structure of the present invention is shown in FIG. Figure 1 ;

[0051] Fig.12 The side view of the structure of a lifting pile driving system capable of reducing height in the state of connecting the pile driving structure of the present invention is shown in FIG. Figure 2 ;

[0052] Fig.13 The side view of the structure of a lifting and piling system capable of reducing height in the state of connecting the lifting structure of the present invention is shown in FIG. Figure 1 ;

[0053] Fig.14 The side view of the structure of a lifting and piling system capable of reducing height in the state of connecting the lifting structure of the present invention is shown in FIG. Figure 2 ;

[0054] Icons: 1-base; 2-rotating platform; 3-main arm; 31-segment; 32-first steel box structure; 41-lifting pulley block; 42-hook; 51-pile frame; 511-extension frame; 512-second steel box structure; 52-telescopic support frame; 521-sleeve; 522-telescopic cylinder; 53-pile hammer; 6-hull; 7-laying bracket; 8-auxiliary lifting equipment; 91-strut; 911-luffing pulley assembly; 92-pull rod; 921-first telescopic device; 922-connecting pin. DETAILED DESCRIPTION

[0055] The present invention is further described in detail below in conjunction with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0056] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0057] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.

[0058] In addition, the expressions “first”, “second”, “third”, etc. that appear in the terms are merely descriptions used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0059] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0060] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0061] Example 1

[0062] like Figures 1 to 14 As shown, a lifting and piling system capable of lowering height comprises a base 1, a rotating platform 2, a main arm 3, a strut 91, a cable and a pull rod 92; the base 1 is used to be connected to the ground or a vehicle, such as a hull 6; the rotating platform 2 is rotatably connected to the base 1 through a slewing support and a cycloidal pinwheel, and the rotation angle is greater than or equal to 360°; a winch, a counterweight, a driver's cab, an attached platform and other equipment are arranged on the rotating platform 2; the main arm 3 is swung and connected to the rotating platform 2; the strut 91 is located at the main arm 3 along the main On one side of the swinging direction of the arm 3, one end of the support rod 91 is swingably connected to the rotating platform 2, and the other end of the support rod 91 is provided with a variable-length pulley assembly 911; one end of the cable is connected to the winch, and the other end of the cable passes around the variable-length pulley assembly 911 and is connected to the main arm 3; the 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, such as a pin connection, a threaded connection or a mortise and tenon connection, and the other end of the pull rod 92 is swingably connected to the end of the support rod 91 away from the rotating platform 2.

[0063] In an optional embodiment, if Figure 1 and Figure 2 As shown, when the pull rod 92 is connected to the rotating platform 2, the axis of the pull rod 92 is along the plumb bob direction. This arrangement can make the two-link mechanism formed by the pull rod 92 and the support rod 91 close to the dead point position, thereby ensuring the support stability of the pull rod 92 and the support rod 91 on the variable pulley block.

[0064] In an optional embodiment, it also includes a first telescopic device 921, 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 against one end of the pull rod 92 close to the rotating platform 2. The telescopic movement of the first telescopic device 921 can drive 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, an electric telescopic rod, etc.

[0065] In an optional embodiment, a linear guide structure may also be provided between one end of the pull rod 92 close to the rotating platform 2 and the rotating platform 2, so as to guide the pull rod 92 to translate in a direction approaching or away from the main arm 3, thereby preventing the pull rod 92 from being offset or tilted outside its swinging plane; the linear guide mechanism includes but is not limited to slide rails, slide grooves, telescopic rods, etc., whose lengths are arranged in a direction approaching 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 in a direction 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 baffle, a baffle, and a baffle.

[0067] In an optional embodiment, it also includes a connecting pin 922; a first limiting hole is provided at one end of the pull rod 92 close to the rotating platform 2, and a second limiting hole is provided at a corresponding position of the rotating platform 2. The connecting pin 922 passes through the first limiting hole and the second limiting hole, and plugging and unplugging the connecting pin 922 can connect or separate the pull rod 92 and the rotating platform 2.

[0068] In an optional embodiment, a second telescopic device is further included, 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 second telescopic device can drive the connecting pin 922 to enter and exit the first limiting hole and the second limiting hole when it is extended. 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, one end of the main arm 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 arm 3 away from the rotating platform 2. The hook 42 is connected to the winch through a cable passing around the lifting pulley block 41, so that the hook 42 can be retracted and extended by the retraction and extension of the winch.

[0071] The pile driving structure includes a pile frame 51 and a telescopic support frame 52; the pile frame 51 is swingably connected to the end of the main arm 3 away from the rotating platform 2, and a slide rail is arranged along the length direction of the pile frame 51, and a movable hinge seat is slidably connected to the slide rail, and the movable hinge seat is sequentially connected with pile hammer 53, pile cap and pile gripper and other equipment required for piling from top to bottom, 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 adopt existing mature products; 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 that it can be Figure 11 to Figure 12 As shown, the pile frame 51 is driven to swing relative to the main arm 3; the length adjustment of the telescopic support frame 52 can be achieved by a movable or adjustable mechanism including but not limited to a planar connecting rod, a gear rack, a hydraulic cylinder, a pneumatic cylinder, an electric telescopic rod, etc.

[0072] In an optional embodiment, the end of the pile frame 51 away from the main arm 3 is swingably connected to an extension frame 511, and the extension frame 511 has a first position and a second position. When the extension frame 511 swings to the first position, the extension frame 511 is spliced ​​to the end of the pile frame 51 away from the main arm 3 to lengthen the pile frame 51; when the extension frame 511 swings to the second position, the extension frame 511 is attached to one side of the pile frame 51. Figures 9 and 10 As shown, the extension frame 511 is hinged to the side of the pile frame 51 close to the rotating platform 2, and its cross-sectional shape matches the pile frame 51; Fig.10 The figure shows the extension frame 511 in the first position, where it can be just connected to the lower end of the pile frame 51; Fig. 9 The extension frame 511 is shown to be located at the second position. It can be seen that the extension frame 511 can be close to the side of the pile frame 51 close to the rotating platform 2, thereby avoiding interference with the pile driving operation.

[0073] In an optional embodiment, the main arm 3 includes at least two segments 31 connected in sequence along its length direction, the segment 31 closest to the rotating platform 2 is swingably 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; the adjacent two segments 31 are detachably connected. Figure 4 As shown, the main arm 3 includes two segments 31. In this case, the main arm 3 is shorter and more flexible, and is more suitable for pile driving conditions. Figure 5 As shown, the main boom 3 includes three segments 31. In this case, the main boom 3 is longer and more suitable for lifting conditions.

[0074] In an optional embodiment, the section 31 closer to the rotating platform 2 has a larger cross-sectional area to match the situation where the stress of the main arm 3 is greater when it is closer to the rotating platform 2, so that the present solution has stronger structural stability.

[0075] In an optional embodiment, the end of the main arm 3 away from the rotating platform 2 includes a first steel box structure 32, sometimes also called a plate beam structure; the first steel box structure 32 is used to connect the lifting structure or pile frame 51. Figure 1 , Figures 11 to 14 As shown, a first steel box structure 32 is provided on the top of the main arm 3. When the lifting structure is installed, it can be seen that the lifting pulley block 41 and its corresponding supporting 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 close to the main arm 3 includes a second steel box structure 512, sometimes also called a plate beam structure; the second steel box structure 512 is used to connect the pile hammer 53. Figure 1 , Figure 11 to Figure 12 As shown, the second steel box structure 512 is arranged 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, so that the pile frame 51 can withstand the load generated by the pile hammer 53 piling.

[0077] In an optional embodiment, a working platform is slidably connected to the pile frame 51, and the working platform can move along the length direction of the pile frame 51 and reach the end of the pile frame 51 away from the main arm 3. The working platform can be set on both sides of the width direction of the pile frame 51, that is, on both sides of the tangent direction of the rotating platform 2, so that the equipment or staff can detect the pile from both sides of the pile, and the movement of the working platform can be realized by including but not limited to wheel system walking, mechanical foot alternating walking, retracting and releasing cables, etc.; the working platform can be provided with an openable and closable movable part to approach and hold the pile, so as to facilitate the equipment or staff to fully detect the pile from all sides of the pile; the movement of the movable part can be controlled by a motor, a cylinder, a cylinder, manual, etc.

[0078] In an optional embodiment, the telescopic support frame 52 includes at least two sleeves 521 that are sequentially sleeved and connected, 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 two adjacent sleeves 521. The telescopic cylinder 522 can drive the two adjacent sleeves 521 to slide relative to each other when it is extended and retracted, thereby changing the length of the telescopic support frame 52. Figure 6 As shown, the telescopic support frame 52 includes three sleeves 521 which are arranged in sequence; the sleeves 521 can adopt a box beam with a rectangular cross-section to ensure the bearing capacity.

[0079] In an optional embodiment, if Figures 7 and 8As shown, at least two groups of sleeves 521 are arranged along the width direction of the telescopic support frame 52, that is, along the tangent direction of the rotation direction of the rotating platform 2, and each group of sleeves 521 includes at least two sleeves 521 arranged in sequence; an intermediate connecting beam is connected between the sleeves 521 of the corresponding positions in two adjacent groups of sleeves 521, and the telescopic cylinder 522 is connected between the two adjacent intermediate connecting beams along the length direction of the telescopic support frame 52. Such an arrangement can enhance the structural stability of the telescopic support frame 52 on the one hand, and reduce the possibility of the telescopic support frame 52 being skewed or even deformed; on the other hand, it is also convenient for Figures 7 and 8 As shown, two or more rows of telescopic cylinders 522 are arranged along the length direction of the middle connecting beam, so as to enhance the driving force that the telescopic support frame 52 can provide, thereby enhancing the control ability of the swing of the pile frame 51; the middle connecting beam can also adopt a box beam with a rectangular cross-section to ensure the bearing capacity.

[0080] In an optional embodiment, at least one of the main arm 3 and the pile frame 51 comprises a truss structure. Figure 1 As shown, the main bodies of the main arm 3 and the pile frame 51 are both truss structures. The main body and diagonal rods 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 shelf bracket 7 is further provided on one side of the rotating platform 2, and the distance between the shelf bracket 7 and the rotating platform 2 matches the length of the main arm 3, so that Figure 2 , Figure 3 and Fig.14 As shown, when the main arm 3 is laid down, the main arm 3 is supported away from one end of the rotating platform 2; the mounting bracket 7 can be a single large bracket or a combination of multiple small brackets according to the shape of the main arm 3; an auxiliary lifting device 8 can also be arranged on the side of the rotating platform 2 facing the mounting bracket 7, and 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 method for adjusting the height of a lifting and piling system is applied to a lifting and piling system capable of reducing the height in Example 1, and comprises the following steps:

[0084] S1, by means of a winch, the rope is retracted and released to reduce the angle between the main arm 3 and the horizontal plane, until the highest point of the main arm 3 is lower than a predetermined height, and the main arm 3 is supported on the shelf bracket 7;

[0085] S2, release the connection between the pull rod 92 and the rotating platform 2, and adjust the inclination angle of the pull rod 92 until the end of the pull rod 92 close to the rotating platform 2 is biased towards the direction where the main arm 3 is located. Figure 3As shown in FIG. 1 , the axis of the pull rod 92 is made to form an angle with the plumb bob, and the lower end thereof is closer to the main arm 3 than the upper end thereof. In this way, the two-link mechanism formed by the pull rod 92 and the strut 91 can be kept away from the dead point, and the pull rod 92 no longer blocks the swing of the strut 91, so that the strut 91 can move along the vertical axis under the action of 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 support rod 91 in the subsequent step S3;

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

[0087] In an optional implementation manner, after passing through the restricted altitude area, step S3 further includes the following steps:

[0088] S4. Tighten the cable by a winch to increase the angle between the support rod 91 and the horizontal plane until the highest point of the support rod 91 returns to the initial height before step S3; at this time, the pull rod 92 will automatically deflect clockwise under its own weight and the guidance of the top surface of the rotating platform 2, thereby returning to its posture before step S2, without the assistance of additional equipment.

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

[0090] In an optional embodiment, 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. The tension of the pull rod 92 can be measured by, for example, setting a tension sensor at the connection between the pull rod 92 and the support rod 91, and / or setting a tension sensor at the connection between the pull rod 92 and the rotating platform 2, or confirming the tension unloading of the pull rod 92 by manual observation, trial plugging and pulling, and trial swinging. When the tension of the pull rod 92 is completely unloaded, the push-pull force required to swing the pull rod 92 will be reduced to a minimum.

[0091] The above are only 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 in the protection scope of the present invention.

Claims

1. A lifting and piling system that can reduce the height, It is characterized in that Include: A rotating platform (2), wherein a winch is arranged on the rotating platform (2); A main arm (3), the main arm (3) being swingably connected to the rotating platform (2); A support rod (91), the support rod (91) being located on one side of the main arm (3) along the swing direction of the main arm (3), one end of the support rod (91) being swingably connected to the rotating platform (2), and the other end of the support rod (91) being provided with a luffing pulley assembly (911); A cable, one end of which is connected to the winch, and the other end of which passes around the luffing pulley assembly (911) and is connected to the main arm (3); A pull rod (92), wherein the pull rod (92) is located on a 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 swingably connected to an end of the support rod (91) away from the rotating platform (2).

2. A lifting and piling system capable of being lowered in height according to claim 1, It is characterized in that 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 against one end of the pull rod (92) close to the rotating platform (2). The telescopic movement of the first telescopic device (921) can drive the pull rod (92) to swing relative to the support rod (91).

3. A lifting and piling system capable of being lowered in height according to claim 1, It is characterized in that It also includes a connecting pin (922); a first limiting hole is provided at one end of the pull rod (92) close to the rotating platform (2), and a second limiting hole is provided at a corresponding position of the rotating platform (2); the connecting pin (922) passes through the first limiting hole and the second limiting hole, and plugging and unplugging the connecting pin (922) can connect or disconnect the pull rod (92) and the rotating platform (2).

4. A lifting and piling system capable of being lowered in height according to claim 3, It is 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 second telescopic device can drive the connecting pin (922) to enter and exit the first limiting hole and the second limiting hole by telescoping.

5. A lifting and piling system capable of being lowered in height according to any one of claims 1 to 4, It is characterized in that One end of the main arm (3) away from the rotating platform (2) is connected to a lifting structure or a piling structure; The lifting structure comprises a lifting pulley block (41) and a hook (42), wherein the lifting pulley block (41) is connected to an end of the main arm (3) away from the rotating platform (2), and the hook (42) is connected to the winch via a cable passing around the lifting pulley block (41); The piling structure comprises a pile frame (51) and a telescopic support frame (52); the pile frame (51) is swingably connected to one end of the main arm (3) away from the rotating platform (2), and the pile frame (51) is connected to a pile hammer (53), a pile cap and a pile gripper; 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).

6. A lifting and piling system capable of being lowered in height according to claim 5, It is characterized in that The end of the main arm (3) away from the rotating platform (2) comprises a first steel box structure (32), and the first steel box structure (32) is used to connect the lifting structure or the pile frame (51).

7. A lifting and piling system capable of being lowered in height according to claim 5, It is characterized in that The end of the pile frame (51) close to the main arm (3) comprises a second steel box structure (512), and the second steel box structure (512) is used to connect the pile hammer (53).

8. A lifting and piling system capable of being lowered in height according to any one of claims 1 to 4, It is characterized in that A shelf bracket (7) is also provided on one side of the rotating platform (2), and the shelf bracket (7) is used to support one end of the main arm (3) away from the rotating platform (2).

9. A method for adjusting the height of a lifting and piling system. It is characterized in that A lifting and piling system capable of reducing height as claimed in any one of claims 1 to 8 comprises the following steps: S1, retracting and releasing the cable by a winch to reduce the angle between the main arm (3) and the horizontal plane until the highest point of the main arm (3) is lower than a predetermined height; S2, releasing the connection between the pull rod (92) and the rotating platform (2), and adjusting the tilt angle of the pull rod (92) until the end of the pull rod (92) close to the rotating platform (2) is inclined toward the direction where the main arm (3) is located; S3, loosening the cable by means of the winch, so that the angle between the support rod (91) and the horizontal plane decreases, until the highest point of the support rod (91) is lower than a predetermined height.

10. A method for adjusting the height of a lifting and piling system according to claim 9, It is characterized in that In step S1, the angle between the main arm (3) and the horizontal plane is reduced until the pulling force on the pull rod (92) is zero.

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