Reducing device for pile driver of pile driving barge and pile driver

Abstract

The utility model relates to the technical field of steel pipe pile inserting and driving auxiliary equipment, in particular to a diameter changing device for a pile driving barge pile supporting device and the pile supporting device. The diameter changing device comprises a plurality of diameter changing units used for being arranged in the circumferential direction of a steel pipe pile, and each diameter changing unit comprises a first sleeve used for being arranged on the pile supporting device; the movable rod is movably arranged in the first sleeve and arranged in the radial direction of the steel pipe pile, the two ends of the movable rod extend out of the first sleeve, and one end of the movable rod is used for abutting against the steel pipe pile; the limiting piece is arranged on the first sleeve and used for fixing the relative position of the first sleeve and the movable rod. Due to the fact that the first sleeve is fixedly arranged, the movable rod can adjust the length extending out of the first sleeve, the relative position of the first sleeve and the movable rod can be fixed through the limiting piece, the inner diameter of the pile supporting device can be changed so that the pile supporting device can be suitable for steel pipe piles of different specifications, applicability is improved, and the problems that in the prior art, different types of steel pipe piles are difficult to deal with; and the clamping effect is reduced, so that the clamping precision is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe pile driving auxiliary equipment, in particular to a diameter-changing device for a pile supporting device of a pile driving ship and the pile supporting device. Background Art

[0002] A pile-driving barge is an engineering vessel specially used for pile driving in water. Its working mechanism includes a pile frame and its luffing mechanism located at the bow. The pile frame is equipped with a pile hammer and its landing gear, a pile driver and a pile holder, and a gantry for its up and down movement. The top of the pile frame is equipped with multiple pulleys, hooks, lifting platforms on both sides, a hull leveling device, an anchor, and an anchor cable.

[0003] In the prior art, pile hoisting, ship moving and positioning are completed through linkage mechanisms such as steel cables, pulleys and winches. After the steel pipe pile is tightened by the pile supporter, the pile is driven into the water with the explosive force of the pile hammer to complete the steel pipe pile insertion process.

[0004] However, due to the complicated types of foundation pipe piles of water construction platforms and the existence of pipe piles of various diameters on one platform, the existing pile supports on the pile-driving ship are difficult to meet the diameter change requirements of various types of pipe piles, and there is a problem of difficulty in dealing with different types of steel pipe piles, which reduces the clamping effect and thus reduces the clamping accuracy. Utility Model Content

[0005] The present application provides a diameter-changing device and a pile supporter for a pile driver, which can solve the problem in the prior art that due to the complicated types of foundation pipe piles of the water construction platform and the existence of pipe piles of various diameters on one platform, the original pile supporter on the pile driver is difficult to meet the diameter-changing requirements of various types of pipe piles, and it is difficult to cope with different types of steel pipe piles, which reduces the clamping effect and thus reduces the clamping accuracy.

[0006] In a first aspect, an embodiment of the present application provides a diameter-changing device for a pile driver of a pile-driving ship, which includes a plurality of diameter-changing units arranged along the circumference of a steel pipe pile, wherein the diameter-changing units include:

[0007] A first sleeve, which is used to be arranged on the pile supporter;

[0008] A movable rod, which is movably disposed in the first sleeve and arranged along the radial direction of the steel pipe pile, both ends of the movable rod extend out of the first sleeve, and one end is used to abut against the steel pipe pile;

[0009] A limiting member is arranged on the first sleeve and is used to fix the relative position of the first sleeve and the movable rod.

[0010] In combination with the first aspect, in one embodiment, a through hole is provided on the first sleeve, and a plurality of limiting holes are provided on the movable rod, and the plurality of limiting holes are arranged at intervals along the length direction of the movable rod. The limiting member is used to pass through the through hole and through one of the limiting holes to fix the relative position of the first sleeve and the movable rod.

[0011] In combination with the first aspect, in one embodiment, two limit snap-ons are provided on the first sleeve, and the openings of the two limit snap-ons are opposite. A limit rod is provided on the limit member, and the limit member is used to pass through the through hole and the corresponding limit hole, and then the limit rod is clamped in the limit snap-on by rotation.

[0012] In combination with the first aspect, in one embodiment, the limiting member includes a limiting portion and an annular portion, the limiting portion is used to pass through the through hole and the corresponding limiting hole, and the annular portion is arranged at one end of the limiting portion.

[0013] In combination with the first aspect, in one embodiment, it further includes a second sleeve, which is used to be set on the pile supporter, the length direction of the second sleeve is the same as the length direction of the first sleeve, and is used to allow the movable rod to pass through.

[0014] In combination with the first aspect, in one embodiment, a threaded hole is provided on the second sleeve, a limiting bolt is provided on the threaded hole, the limiting bolt is connected to the threaded hole and extends into the second sleeve, and the limiting bolt is used to abut against the movable rod.

[0015] In combination with the first aspect, in one embodiment, a pulley assembly is provided on the movable rod, and the pulley assembly includes a pulley seat and a pulley arranged on the pulley seat, the pulley seat is arranged at the end of the movable rod, and the pulley is used to abut against the steel pipe pile.

[0016] In combination with the first aspect, in one embodiment, a reinforcing plate is provided between the movable rod and the pulley seat.

[0017] In combination with the first aspect, in one embodiment, a push-pull rod is provided at one end of the movable rod away from the steel pipe pile, and the push-pull rod is perpendicular to the movable rod.

[0018] In a second aspect, the present application also provides a pile support device, which includes:

[0019] pile support device;

[0020] A plurality of variable diameter units are arranged along the circumference of the steel pipe pile, and the variable diameter units include:

[0021] A first sleeve, which is arranged on the pile supporter;

[0022] A movable rod, which is movably disposed in the first sleeve and arranged along the radial direction of the steel pipe pile, both ends of the movable rod extend out of the first sleeve, and one end is used to abut against the steel pipe pile;

[0023] A limiting member is arranged on the first sleeve and is used to fix the relative position of the first sleeve and the movable rod.

[0024] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0025] When using the diameter-changing device for the pile-supporting device of the pile-driving ship, the diameter-changing unit is arranged on the pile-supporting device along the circumference of the steel pipe pile. During the installation of a single diameter-changing unit, the first sleeve is fixed on the pile-supporting device, the movable rod is arranged in the first sleeve along the radial direction of the steel pipe pile, both ends of the movable rod extend out of the first sleeve, and the length of the first sleeve can be adjusted. One end of the movable rod is used to abut against the steel pipe pile, and the limiter is arranged on the first sleeve to fix the relative position of the first sleeve and the movable rod. Since the first sleeve is fixedly arranged, the movable rod can adjust the length of the first sleeve, and the relative position of the first sleeve and the movable rod can be fixed by the limiter, and the inner diameter of the pile-supporting device can be changed to be suitable for steel pipe piles of different specifications, thereby improving the applicability and solving the problem that the existing pile-supporting device on the pile-driving ship is difficult to meet the diameter-changing requirements of various types of pipe piles due to the complicated models of foundation pipe piles of the water construction platform, and there are multiple diameter pipe piles on one platform, and it is difficult to cope with different types of steel pipe piles, which reduces the clamping effect and thus reduces the clamping accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a schematic diagram of a diameter-changing device for a pile supporting device of a pile driving ship arranged on the pile supporting device in an embodiment of the utility model.

[0028] Figure 2 The utility model is a schematic diagram of the structure of a diameter-changing unit in a diameter-changing device embodiment for a pile-supporting device of a pile-driving ship.

[0029] Figure 3 The utility model is a schematic cross-sectional structure diagram of a diameter-changing unit in an embodiment of a diameter-changing device for a pile-supporting device of a pile-driving ship.

[0030] Figure 4The utility model is a side view of the structure of a diameter-changing unit in an embodiment of a diameter-changing device for a pile-supporting device of a pile-driving ship.

[0031] Figure 5 The utility model is a schematic structural diagram of a limiter in an embodiment of a diameter-changing device for a pile supporting device of a pile driving ship.

[0032] In the figure: 1. steel pipe pile; 2. first sleeve; 21. through hole; 22. limit bayonet; 3. pile support; 4. movable rod; 41. limit hole; 42. reinforcement plate; 5. limit member; 51. limit rod; 52. limit part; 53. annular part; 6. second sleeve; 61. threaded hole; 7. limit bolt; 8. push-pull rod; 9. pulley assembly; 91. pulley seat; 92. pulley; 10. reducer unit. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] The embodiment of the present application provides a diameter-changing device and a pile supporter for a pile driver, which can solve the problem in the prior art that due to the complicated types of foundation pipe piles of the water construction platform, there are various diameters of pipe piles on one platform, and the original pile supporter on the pile driver is difficult to meet the diameter-changing requirements of various types of pipe piles, and it is difficult to cope with different types of steel pipe piles, which reduces the clamping effect and thus reduces the clamping accuracy.

[0035] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, on the one hand, the present application provides a diameter-changing device for a pile driver of a pile driving vessel, which includes a plurality of diameter-changing units 10 arranged along the circumference of a steel pipe pile 1, and the diameter-changing unit 10 includes:

[0036] A first sleeve 2, which is used to be arranged on the pile supporter 3;

[0037] A movable rod 4, which is movably disposed in the first sleeve 2 and is disposed along the radial direction of the steel pipe pile 1, with both ends of the movable rod 4 extending out of the first sleeve 2, and one end being used to abut against the steel pipe pile 1;

[0038] The limiting member 5 is arranged on the first sleeve 2 and is used to fix the relative position between the first sleeve 2 and the movable rod 4 .

[0039] When using the diameter-changing device for the pile supporting device of the pile driving ship, the diameter-changing unit 10 is arranged on the pile supporting device 3 along the circumference of the steel pipe pile 1. During the installation of a single diameter-changing unit 10, the first sleeve 2 is fixed on the pile supporting device 3, and the movable rod 4 is arranged in the first sleeve 2 along the radial direction of the steel pipe pile 1. Both ends of the movable rod 4 extend out of the first sleeve 2, and the length of the extension of the first sleeve 2 can be adjusted. One end of the movable rod 4 is used to abut on the steel pipe pile 1, and the limit member 5 is arranged on the first sleeve 2 to fix the relative position of the first sleeve 2 and the movable rod 4. Since the first sleeve 2 is fixedly arranged, the movable rod 4 can adjust the length of extending out of the first sleeve 2, and the relative position of the first sleeve 2 and the movable rod 4 can be fixed by the limit member 5, so the inner diameter of the pile support 3 can be changed to be suitable for steel pipe piles 1 of different specifications, thereby improving the applicability and solving the problem in the prior art that due to the complicated types of foundation pipe piles of the water construction platform, there are various diameters of pipe piles on one platform, and the original pile support on the pile driving ship is difficult to meet the diameter change requirements of various types of pipe piles, and it is difficult to cope with different types of steel pipe piles, thereby reducing the clamping effect and thus reducing the clamping accuracy.

[0040] like Figure 2 , Figure 3 and Figure 4 As shown, in some optional embodiments, a through hole 21 is provided on the first sleeve 2, and a plurality of limiting holes 41 are provided on the movable rod 4. The plurality of limiting holes 41 are arranged at intervals along the length direction of the movable rod 4. The limiting member 5 is used to pass through the through hole 21 and through one of the limiting holes 41 to fix the relative position of the first sleeve 2 and the movable rod 4.

[0041] In this embodiment, a through hole 21 is provided on the first sleeve 2, and a plurality of limiting holes 41 are provided on the movable rod 4. The plurality of limiting holes 41 are arranged at intervals along the length direction of the movable rod 4. The limiting member 5 is inserted from the through hole 21 and passes through one of the limiting holes 41 to fix the relative position of the first sleeve 2 and the movable rod 4. The structure is simple and easy to manufacture.

[0042] like Figure 2 , Figure 3 and Figure 4 As shown, in some optional embodiments, two limit snap-ons 22 are provided on the first sleeve 2, and the openings of the two limit snap-ons 22 are opposite. A limit rod 51 is provided on the limit member 5, and the limit member 5 is used to pass through the through hole 21 and the corresponding limit hole 41, and then the limit rod 51 is clamped in the limit snap-on 22 by rotation.

[0043] In this embodiment, two limiting snap-in openings 22 are provided on the first sleeve 2, and a limiting rod 51 is provided on the limiting member 5. When the limiting member 5 passes through the through hole 21 and the corresponding limiting hole 41, the limiting member 5 can be selected to clamp the limiting rod 51 in the limiting snap-in opening 22 to prevent the limiting member 5 from accidentally escaping from the through hole 21 and the corresponding limiting hole 41, thereby affecting the stability of the diameter-changing device for the pile driver when in use.

[0044] In this example, the limit stop 22 is an L-shaped part, one end of the vertical plate is connected to the first sleeve 2, and the horizontal plate is arranged at the other end of the vertical plate. When the limit rod 51 is clamped in the limit stop 22, the horizontal plate prevents the limit rod 51 from moving in the direction away from the first sleeve 2.

[0045] like Figure 3 and Figure 5 As shown, in some optional embodiments, the limiting member 5 includes a limiting portion 52 and an annular portion 53 , the limiting portion 52 is used to pass through the through hole 21 and the corresponding limiting hole 41 , and the annular portion 53 is arranged at one end of the limiting portion 52 .

[0046] In this embodiment, the structure of the limiting member 5 is specifically described. The limiting member 5 includes a limiting portion 52 and a circular ring portion 53, wherein the limiting portion 52 is used to pass through the through hole 21 and the corresponding limiting hole 41, and the circular ring portion 53 is arranged at one end of the limiting portion 52 to facilitate the operator to grasp and perform the process of pulling out and inserting the limiting member 5.

[0047] like Figure 2 and Figure 3 As shown, in some optional embodiments, a second sleeve 6 is further included. The second sleeve 6 is used to be set on the pile supporter 3. The length direction of the second sleeve 6 is the same as the length direction of the first sleeve 2, and is used to allow the movable rod 4 to pass through.

[0048] In this embodiment, the diameter-changing device for the pile supporting device of the pile driving ship also includes a second sleeve 6, which is used to be arranged on the pile supporting device 3. The length direction of the second sleeve 6 is the same as the length direction of the first sleeve 2, and is used to allow the movable rod 4 to pass through. The movement trajectory of the movable rod 4 can be better controlled by the first sleeve 2 and the second sleeve 6.

[0049] In this example, the second casing 6 is located on a side of the first casing 2 close to the steel pipe pile 1 .

[0050] like Figure 2 and Figure 3 As shown, in some optional embodiments, a threaded hole 61 is provided on the second sleeve 6, and a limiting bolt 7 is provided on the threaded hole 61. The limiting bolt 7 is connected to the threaded hole 61 and extends into the second sleeve 6. The limiting bolt 7 is used to abut against the movable rod 4.

[0051] In this embodiment, a threaded hole 61 is provided on the second sleeve 6, and a limiting bolt 7 is provided on the threaded hole 61. The limiting bolt 7 is connected to the threaded hole 61 and extends into the second sleeve 6. The limiting bolt 7 is used to abut against the movable rod 4. After the limiting member 5 fixes the relative position of the first sleeve 2 and the movable rod 4, the limiting bolt 7 is rotated to extend into the second sleeve 6 to abut against the movable rod 4, thereby eliminating the gap between the movable rod 4 and the second sleeve 6, so that the end fixing effect of the movable rod 4 is better and the accuracy is higher.

[0052] like Figure 2 and Figure 3 As shown, in some optional embodiments, a pulley assembly 9 is provided on the movable rod 4, and the pulley assembly 9 includes a pulley seat 91 and a pulley 92 arranged on the pulley seat 91, the pulley seat 91 is arranged at the end of the movable rod 4, and the pulley 92 is used to abut against the steel pipe pile 1.

[0053] In this embodiment, a pulley assembly 9 is provided on the movable rod 4, and the pulley assembly 9 includes a pulley seat 91 and a pulley 92, wherein the pulley seat 91 is arranged at the end of the movable rod 4, and the pulley 92 is arranged on the pulley seat 91, and is used to abut against the steel pipe pile 1, which can reduce the friction with the steel pipe pile 1 and reduce the damage to the steel pipe pile 1.

[0054] In this example, the pulley 92 is a rubber pulley, which can better protect the anti-corrosion coating on the surface of the steel pipe pile 1 from being damaged compared to an iron pulley.

[0055] like Figure 2 As shown, in some optional embodiments, a reinforcing plate 42 is provided between the movable rod 4 and the pulley seat 91 .

[0056] In this embodiment, a reinforcing plate 42 is provided between the movable rod 4 and the pulley seat 91, so as to strengthen the connection between the movable rod 4 and the pulley seat 91 and improve the structural stability of the diameter-changing device for the pile supporting device of the pile driving ship.

[0057] like Figure 3 As shown, in some optional embodiments, a push-pull rod 8 is provided at one end of the movable rod 4 away from the steel pipe pile 1 , and the push-pull rod 8 is perpendicular to the movable rod 4 .

[0058] In this embodiment, a push-pull rod 8 is provided at one end of the movable rod 4 away from the steel pipe pile 1 . The push-pull rod 8 is perpendicular to the movable rod 4 , so that the operator can easily change the length of the movable rod 4 extending out of the first sleeve 2 .

[0059] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, on the other hand, the present application also provides a pile support device, which includes:

[0060] Pile support 3;

[0061] A plurality of variable diameter units 10 are arranged along the circumference of the steel pipe pile 1, and the variable diameter unit 10 includes:

[0062] A first sleeve 2, which is arranged on the pile supporter 3;

[0063] A movable rod 4, which is movably disposed in the first sleeve 2 and is disposed along the radial direction of the steel pipe pile 1, with both ends of the movable rod 4 extending out of the first sleeve 2, and one end being used to abut against the steel pipe pile 1;

[0064] The limiting member 5 is arranged on the first sleeve 2 and is used to fix the relative position between the first sleeve 2 and the movable rod 4 .

[0065] When the pile supporter is used, the variable diameter unit 10 is arranged on the pile supporter 3 along the circumference of the steel pipe pile 1. During the installation of a single variable diameter unit 10, the first sleeve 2 is fixed on the pile supporter 3, and the movable rod 4 is arranged in the first sleeve 2 along the radial direction of the steel pipe pile 1. Both ends of the movable rod 4 extend out of the first sleeve 2, and the length of the extension of the first sleeve 2 can be adjusted. One end of the movable rod 4 is used to abut on the steel pipe pile 1, and the limit member 5 is arranged on the first sleeve 2 to fix the relative position of the first sleeve 2 and the movable rod 4. Since the first sleeve 2 is fixedly arranged, the movable rod 4 can adjust the length of extending out of the first sleeve 2, and the relative position of the first sleeve 2 and the movable rod 4 can be fixed by the limit member 5, so the inner diameter of the pile support 3 can be changed to be suitable for steel pipe piles 1 of different specifications, thereby improving the applicability and solving the problem in the prior art that due to the complicated types of foundation pipe piles of the water construction platform, there are various diameters of pipe piles on one platform, and the original pile support on the pile driving ship is difficult to meet the diameter change requirements of various types of pipe piles, and it is difficult to cope with different types of steel pipe piles, thereby reducing the clamping effect and thus reducing the clamping accuracy.

[0066] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0067] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0068] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A diameter-changing device for a pile-driving ship pile supporter, characterized in that: It comprises a plurality of diameter-changing units (10) arranged along the circumference of a steel pipe pile (1), wherein the diameter-changing unit (10) comprises: A first sleeve (2) used for being arranged on a pile supporter (3); A movable rod (4) which is movably arranged in the first sleeve (2) and arranged along the radial direction of the steel pipe pile (1); both ends of the movable rod (4) extend out of the first sleeve (2), and one end is used to abut against the steel pipe pile (1); A limiting member (5) is arranged on the first sleeve (2) and is used to fix the relative position of the first sleeve (2) and the movable rod (4).

2. A diameter-changing device for a pile-driving ship pile-supporting device as claimed in claim 1, characterized in that: The first sleeve (2) is provided with a through hole (21), the movable rod (4) is provided with a plurality of limiting holes (41), the plurality of limiting holes (41) are arranged at intervals along the length direction of the movable rod (4), and the limiting member (5) is used to pass through the through hole (21) and through one of the limiting holes (41) to fix the relative position of the first sleeve (2) and the movable rod (4).

3. A diameter-changing device for a pile-driving ship pile supporting device as claimed in claim 2, characterized in that: The first sleeve (2) is provided with two limit snap-in openings (22), the openings of the two limit snap-in openings (22) are opposite to each other, the limit member (5) is provided with a limit rod (51), and the limit member (5) is used to pass through the through hole (21) and the corresponding limit hole (41), and then rotate to make the limit rod (51) be fixed in the limit snap-in opening (22).

4. A diameter-changing device for a pile-driving ship pile-supporting device as claimed in claim 2, characterized in that: The limiting member (5) comprises a limiting portion (52) and a circular ring portion (53); the limiting portion (52) is used to pass through the through hole (21) and the corresponding limiting hole (41); and the circular ring portion (53) is arranged at one end of the limiting portion (52).

5. The diameter-changing device for a pile-driving ship pile supporting device according to claim 1, characterized in that: It also comprises a second sleeve (6), which is used to be arranged on the pile supporter (3), the length direction of the second sleeve (6) is the same as the length direction of the first sleeve (2), and is used to allow the movable rod (4) to pass through.

6. A diameter-changing device for a pile-driving ship pile-supporting device as claimed in claim 5, characterized in that: The second sleeve (6) is provided with a threaded hole (61), and the threaded hole (61) is provided with a limiting bolt (7). The limiting bolt (7) is connected to the threaded hole (61) and extends into the second sleeve (6). The limiting bolt (7) is used to abut against the movable rod (4).

7. The diameter-changing device for a pile-driving ship pile supporting device according to claim 1, characterized in that: The movable rod (4) is provided with a pulley assembly (9), the pulley assembly (9) comprising a pulley seat (91) and a pulley (92) arranged on the pulley seat (91), the pulley seat (91) is arranged at the end of the movable rod (4), and the pulley (92) is used to abut against the steel pipe pile (1).

8. The diameter-changing device for a pile-driving ship pile supporting device according to claim 7, characterized in that: A reinforcing plate (42) is provided between the movable rod (4) and the pulley seat (91).

9. The diameter-changing device for a pile-driving ship pile supporting device according to claim 1, characterized in that: A push-pull rod (8) is provided at one end of the movable rod (4) away from the steel pipe pile (1), and the push-pull rod (8) is perpendicular to the movable rod (4).

10. A pile support device, characterized in that: include: Pile support device (3); A plurality of diameter-changing units (10) are arranged along the circumference of the steel pipe pile (1), wherein the diameter-changing units (10) include: A first sleeve (2) arranged on the pile supporter (3); A movable rod (4) which is movably arranged in the first sleeve (2) and arranged along the radial direction of the steel pipe pile (1); both ends of the movable rod (4) extend out of the first sleeve (2), and one end is used to abut against the steel pipe pile (1); A limiting member (5) is arranged on the first sleeve (2) and is used to fix the relative position of the first sleeve (2) and the movable rod (4).

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