Push-and-pull fork frame of full-rotation hoisting pile driver for offshore ship and assembling and disassembling method of push-and-pull fork frame

Abstract

The invention discloses a push-and-pull fork frame of a full-rotation hoisting pile driver for an offshore ship and a loading and unloading method of the push-and-pull fork frame. The push-and-pull fork frame comprises a first-stage fork frame, a second-stage fork frame, a third-stage fork frame, a first telescopic oil cylinder and a second telescopic oil cylinder. The rear end part of the primary fork frame is movably connected with the root position of the propeller strut; the rear end part of the second-stage fork frame is inserted into the front end part of the first-stage fork frame; the rear end part of the third-stage fork frame is inserted into the front end part of the second-stage fork frame; the front end part of the third-stage fork frame is movably connected with the middle position of the pile frame; the fixed end of the first telescopic oil cylinder is arranged on the first-stage fork frame, and the movable end of the first telescopic oil cylinder is arranged on the second-stage fork frame; the fixed end of the second telescopic oil cylinder is arranged on the second-stage fork frame, and the movable end of the second telescopic oil cylinder is arranged on the third-stage fork frame. A three-stage push-and-pull structure is adopted, the two ends of the push-and-pull structure are movably connected with the root of the propeller strut and the middle of the pile frame correspondingly, and the problems that an existing push-and-pull fork frame is inconvenient to mount / dismount and occupies a large deck area are solved.

Description

Technical Field

[0001] The invention relates to the field of full-rotation crane pile drivers for offshore vessels, and more specifically to a push-pull fork frame of a full-rotation crane pile driver for offshore vessels and a loading and unloading method thereof. Background Art

[0002] Offshore pile foundation engineering is a platform for the construction of various types of offshore engineering facilities. Therefore, whether it is an offshore urban high-pile platform in shallow coral reef geological conditions, offshore wind farm construction, or cross-sea bridge and port terminal construction, offshore piling operations are required. Offshore piling operations generally use large crane ships or large floating crane platforms as carriers, using the cranes carried by them to construct offshore wind power high-pile cap piles, pipe frame piles, and large bridge pile foundations by hydraulic hammer.

[0003] The structure of the push-pull fork frame on the existing marine full-rotation crane pile driver is heavy, and its width and height are designed to be large, resulting in poor force-bearing effect.

[0004] When the full-revolving crane pile driver is in towing condition, its push-pull fork frame is placed separately on the pile-driving ship. Before the formal construction operation, other lifting equipment is needed to install the push-pull fork frame to the main body of the full-revolving crane pile driver. The related electrical and hydraulic pipelines on the push-pull fork frame need to be reinstalled, which is time-consuming, labor-intensive and inefficient. In addition, during each disassembly and installation process, the hydraulic oil pipe is disassembled and the hydraulic oil leaks, polluting the environment. In addition, the push-pull fork frame occupies a large area of ​​the deck, and the valuable area of ​​the deck cannot be fully utilized. Summary of the invention

[0005] In view of the defects existing in the prior art, the purpose of the present invention is to provide a push-pull fork frame of a fully-rotating crane pile driver for offshore ships and a loading and unloading method thereof, which adopts a three-stage push-pull structure, and the two ends are movably connected to the root of the herringbone frame and the middle of the pile frame respectively, thereby solving the problems of inconvenient installation / disassembly of the existing push-pull fork frame and the large deck area occupied.

[0006] To achieve the above object, the present invention adopts the following technical solution:

[0007] A first aspect of the present invention provides a push-pull fork frame of a fully-rotating crane pile driver for offshore vessels, comprising a primary fork frame frame, a secondary fork frame frame, a tertiary fork frame frame, a first telescopic oil cylinder and a second telescopic oil cylinder;

[0008] The rear end of the primary fork frame is movably connected to the root position of the herringbone frame;

[0009] The rear end of the secondary fork frame is inserted into the front end of the primary fork frame;

[0010] The rear end of the third-level fork frame is inserted into the front end of the second-level fork frame;

[0011] The front end of the three-stage fork frame is movably connected to the middle position of the pile frame;

[0012] The fixed end of the first telescopic oil cylinder is arranged on the first-level fork frame, and the movable end is arranged on the second-level fork frame;

[0013] The fixed end of the second telescopic oil cylinder is arranged on the secondary fork frame, and the movable end is arranged on the tertiary fork frame.

[0014] Preferably, the primary fork frame comprises a primary telescopic rod and a primary fixed rod;

[0015] The first-level telescopic rods include two, which are arranged in parallel;

[0016] The first-level telescopic rods are all configured as hollow structures, and the front end of the first-level telescopic rods is configured as an open structure, and the open structure passes through the hollow structure;

[0017] The rear end of the primary telescopic rod is movably connected to the root position of the herringbone frame through a hinge shaft;

[0018] There are two primary fixing rods, one of which is connected between the rear ends of the two primary telescopic rods, and the other is connected between the front ends of the two primary telescopic rods;

[0019] The fixed end of the first telescopic oil cylinder is connected between the two primary fixing rods;

[0020] An oil cylinder bracket is also arranged between the two primary fixing rods.

[0021] Preferably, two or more first telescopic cylinders are provided.

[0022] Preferably, the secondary fork frame includes a secondary telescopic rod and a secondary fixed rod;

[0023] The secondary telescopic rods include two rods which are arranged in parallel;

[0024] The secondary telescopic rods are all configured as hollow structures, and the front end of the secondary telescopic rods is configured as an open structure, and the open structure passes through the hollow structure;

[0025] The rear end of the secondary telescopic rod is inserted into the primary telescopic rod along the opening structure at the front end of the primary telescopic rod;

[0026] The secondary fixing rod is connected between the front ends of the two secondary telescopic rods;

[0027] The movable end of the first telescopic oil cylinder is connected to the secondary fixing rod;

[0028] The front end of the fixed end of the second telescopic oil cylinder is connected to the secondary fixing rod, and the rear end is placed on the oil cylinder bracket.

[0029] Preferably, two or more second telescopic cylinders are provided.

[0030] Preferably, the three-stage fork frame includes three-stage telescopic rods and three-stage fixed rods;

[0031] The three-stage telescopic rods include two, which are arranged in parallel;

[0032] The three-stage telescopic rods are all configured as hollow structures, and the front ends of the three-stage telescopic rods are movably connected to the middle position of the pile frame through a hinge shaft;

[0033] The rear end of the third telescopic rod is inserted into the second telescopic rod along the opening structure at the front end of the second telescopic rod;

[0034] The movable end of the second telescopic oil cylinder is connected to the three-stage fixing rod.

[0035] Preferably, the first-stage telescopic rod, the second-stage telescopic rod, and the third-stage telescopic rod are all rectangular tubes welded with high-strength steel;

[0036] A reinforcing copper sheet is further provided between the first-stage telescopic rod and the second-stage telescopic rod, and between the second-stage telescopic rod and the third-stage telescopic rod. The length of the reinforcing copper sheet is the overlapping part of the fork frame of each stage when the push-pull fork frame is in the third-stage out-of-travel state.

[0037] Preferably, the height h and width ι of the rectangular tube section of the push-pull fork frame are set as follows:

[0038] h+ι≥G2 / 2(2[σ]t)

[0039] Among them, G2 represents the deadweight of the push-pull fork frame; σ represents the allowable stress of high-strength steel of the rectangular tube; t represents the wall thickness of the rectangular tube.

[0040] Preferably, the distance L between the first-stage telescopic rod / the second-stage telescopic rod / the third-stage telescopic rod in the push-pull fork frame is set as follows:

[0041] M=(F1+F2)*L

[0042] Among them, M represents the fixed force couple formed by the external force on the push-pull fork frame; F1 and F2 represent the comprehensive forces of the two first-level telescopic rods / second-level telescopic rods / third-level telescopic rods respectively.

[0043] The second aspect of the present invention provides a method for loading and unloading a push-pull fork frame of a marine full-rotation crane pile driver based on the first aspect of the present invention:

[0044] When the push-pull fork frame is installed for the first time, the full-revolving crane pile driver is operated, and the main lifting hook thereof is used to connect the push-pull fork frame with a sling, and the combined action of the amplitude change and rotation of the full-revolving crane pile driver is used to adjust so that one end of the push-pull fork frame is hinged to the hinge seat at the root position of the A-frame through the hinge shaft, and then the combined action of the main lifting hook and the second telescopic oil cylinder is used to adjust so that the other end of the push-pull fork frame is hinged to the hinge seat at the middle position of the pile frame through the hinge shaft;

[0045] After the push-pull fork frame is connected, the sling is untied, the relevant electrical and hydraulic components on the push-pull fork frame are installed, and the lifting main hook is connected to the pile frame;

[0046] When the full-rotation crane pile driver needs to be towed, the push-pull fork frame is fixed by connecting the two end hinge shafts of the herringbone frame and the pile frame, without removing the push-pull fork frame;

[0047] When the push-pull fork frame needs major repair and maintenance, first dismantle the electrical and hydraulic components at the relative motion position on the push-pull fork frame, use the lifting main hook, adopt the sling to connect the push-pull fork frame, first dismantle the hinge shaft hinged to the pile frame, then use the lifting main hook and the full-rotating lifting pile driver to dismantle the hinge shaft hinged to the herringbone frame, finally use the lifting main hook, the full-rotating lifting pile driver to move the luffing and rotation, place the push-pull fork frame on the hull for related maintenance work.

[0048] The push-pull fork frame of a fully rotating crane pile driver for offshore use provided by the present invention and its loading and unloading method adopt a three-level push-pull structure, with both ends movably connected to the root of the herringbone frame and the middle of the pile frame respectively. The push-pull fork frame structure is optimized and simplified, lighter than the traditional one, and has a better comprehensive force effect. The push-pull fork frame loading and unloading method solves the problems of inconvenient installation / disassembly of the existing push-pull fork frame, low efficiency, environmental pollution caused by hydraulic oil leakage during disassembly and installation, and large deck area occupation. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a top view schematic diagram of the push-pull fork frame of the present invention in the third-stage outward travel state;

[0050] Figure 2 It is a top view schematic diagram of the push-pull fork frame of the present invention in the secondary outward travel state;

[0051] Figure 3 It is a top view schematic diagram of the push-pull fork frame of the present invention in a full return state;

[0052] Figure 4 It is a schematic diagram of a reinforcing copper sheet provided between the primary telescopic rod and the secondary telescopic rod in the push-pull fork frame of the present invention;

[0053] Figure 5 It is a schematic diagram of a reinforcing copper sheet provided between the primary telescopic rod and the secondary telescopic rod in the push-pull fork frame of the present invention;

[0054] Figure 6 It is a schematic diagram of the arrangement of the push-pull fork frame of the present invention;

[0055] Figure 7 It is a schematic diagram of the overall force of the push-pull fork frame of the present invention;

[0056] Figure 8 yes Figure 7 Schematic diagram of the V direction. DETAILED DESCRIPTION

[0057] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0058] Combination Figures 1 to 6 As shown, the present invention provides a push-pull fork frame of a fully-rotating crane pile driver for offshore vessels, comprising a primary fork frame frame 1, a secondary fork frame frame 2, a tertiary fork frame 3, a first telescopic oil cylinder 4 and a second telescopic oil cylinder 5.

[0059] The rear end of the primary fork frame 1 is movably connected to the root position of the herringbone frame 6 through a hinge shaft.

[0060] The rear end of the secondary fork frame 2 is inserted into the front end of the primary fork frame 1 .

[0061] The rear end of the tertiary fork frame 3 is inserted into the front end of the secondary fork frame 2 .

[0062] The front end of the three-stage fork frame 3 is movably connected to the middle position of the pile frame 7 through a hinge shaft.

[0063] The fixed end of the first telescopic oil cylinder 4 is connected to the primary fork frame 1 , and the movable end is connected to the secondary fork frame 2 .

[0064] The fixed end of the second telescopic oil cylinder 5 is connected to the secondary fork frame 2, and the movable end is connected to the tertiary fork frame 3.

[0065] The primary fork frame 1 comprises a primary telescopic rod 11 and a primary fixed rod 12 .

[0066] There are two primary telescopic rods 11, which are arranged in parallel.

[0067] The two primary telescopic rods 11 are both configured as hollow structures, and the front end of the primary telescopic rod 11 is also configured as an open structure, and the open structure passes through the hollow structure.

[0068] The rear end of the primary telescopic rod 11 is movably connected to the root position of the herringbone frame 6 through a hinge shaft.

[0069] There are two primary fixing rods 12 , wherein one primary fixing rod 12 is connected between the rear ends of the two primary telescopic rods 11 , and the other primary fixing rod 12 is connected between the front ends of the two primary telescopic rods 11 .

[0070] The first telescopic oil cylinder 4 is a long strip oil cylinder, both ends of the fixed end of which are respectively connected to two primary fixed rods 12 , and the movable end faces the secondary fork frame 2 .

[0071] A long strip oil cylinder support 8 is also connected between the two primary fixing rods 12 .

[0072] According to actual conditions, one or more first telescopic cylinders 4 may be provided.

[0073] The secondary fork frame 2 includes a secondary telescopic rod 21 and a secondary fixed rod 22 .

[0074] There are two secondary telescopic rods 21, which are arranged in parallel.

[0075] The two secondary telescopic rods 21 are both configured as hollow structures, and the front end of the secondary telescopic rod 21 is configured as an open structure, and the open structure passes through the hollow structure.

[0076] The rear end of the secondary telescopic rod 21 is inserted into the primary telescopic rod 11 along the front end opening structure of the primary telescopic rod 11 , and can move back and forth along the primary telescopic rod 11 under the drive of the first telescopic oil cylinder 4 .

[0077] The secondary fixing rod 22 is connected between the front ends of the two secondary telescopic rods 21 .

[0078] The movable end of the first telescopic oil cylinder 4 is connected to the secondary fixing rod 22 .

[0079] The second telescopic oil cylinder 5 is a long strip oil cylinder, the front end of which is connected to the secondary fixed rod, and the rear end is placed on the oil cylinder bracket 8.

[0080] According to actual conditions, two or more second telescopic cylinders 5 can be provided.

[0081] The three-stage fork frame 3 includes a three-stage telescopic rod 31 and a three-stage fixed rod 32 .

[0082] There are two three-stage telescopic rods 31, which are arranged in parallel.

[0083] The two three-stage telescopic rods 31 are both arranged to be reinforced in sections in a hollow structure, and the front end of the three-stage telescopic rod 31 is movably connected to the middle position of the pile frame 7 through a hinge shaft;

[0084] The rear end of the third telescopic rod 31 is inserted into the second telescopic rod 21 along the front end opening structure of the second telescopic rod 21 , and can move back and forth along the second telescopic rod 21 under the drive of the second telescopic oil cylinder 5 .

[0085] The movable end of the second telescopic oil cylinder 5 is connected to the third-level fixed rod 32 .

[0086] The first-stage telescopic rod 11, the second-stage telescopic rod 21 and the third-stage telescopic rod 31 are all rectangular tubes welded with high-strength steel.

[0087] Reinforcement copper sheets 9 are also provided between the primary telescopic rod 11 and the secondary telescopic rod 21 , and between the secondary telescopic rod 21 and the tertiary telescopic rod 31 .

[0088] Two reinforcing copper sheets 9 are respectively arranged at the four inner corners of the rectangular tube for reinforcement and lubrication to prevent excessive friction between the steel plates and stress deformation at the corners.

[0089] The length of the reinforcing copper sheet 9 is the overlapping portion of the fork frame at each level when the push-pull fork frame is in the three-level out-of-travel state.

[0090] Combination Figures 6 to 8 As shown, the main force form of the push-pull fork frame 100 of the present invention is similar to that of a cantilever structure, and its weight and center position have a great influence on its bearing capacity. The push-pull fork frame 100 of the present invention has three levels, and the more forward, the more sensitive to weight, especially the secondary fork frame 2, which must ensure working capacity and strictly control the plate thickness, thereby strictly controlling the weight.

[0091] The push-pull fork frame 100 of the present invention is located directly below the boom 10. Due to the movement trajectory of the steel wire ropes of each lifting mechanism on the boom 10, the width direction of the push-pull fork frame 100 of the present invention is restricted. However, in order to leave working space for the telescopic cylinder, it is necessary to ensure that the strength in this direction can resist the overturning moment. The height of the push-pull fork frame 100 of the present invention is also limited, and the height direction of the structural section is the direction with the greatest force. In order to have sufficient cross-sectional area, either the cross-sectional height is increased or the plate thickness is increased; however, the height is subject to certain restrictions, and the plate thickness is also limited, so it is necessary to find a suitable height within the two limits of width and height, and match the suitable plate thickness to meet the working capacity. The cross-sectional height h and width ι of the push-pull fork frame 100 of the present invention are set as follows:

[0092] h+ι≥G2 / 2(2[σ]t)

[0093] Among them, G2 represents the deadweight of the push-pull fork frame; σ represents the allowable stress of the rectangular tube high-strength steel; t represents the wall thickness of the rectangular tube.

[0094] The spacing L between two first-stage telescopic rods 11 / second-stage telescopic rods 21 / third-stage telescopic rods 31 in the push-pull fork frame 100 of the present invention (i.e., the transverse fixed width of the push-pull fork frame 100) is set as follows:

[0095] M=(F1+F2)*L

[0096] Wherein, M represents a fixed force couple formed by the push-pull fork frame under external force; F1 and F2 represent the comprehensive forces of the two primary telescopic rods 11 / secondary telescopic rods 21 / tertiary telescopic rods 31 respectively.

[0097] When M causes the combined forces on the two telescopic rods to be F1 and F2, the larger the distance L, the smaller F1 or F2.

[0098] The present invention also provides a loading and unloading method based on the push-pull fork frame of the present invention:

[0099] When the push-pull fork frame 100 is installed for the first time, the full-rotation crane pile driver is operated, and its lifting main hook is used to connect the push-pull fork frame with a sling. The push-pull fork frame 100 is lifted to a suitable height by adjusting the combined action of the amplitude change and rotation of the full-rotation crane pile driver, so that one end of the push-pull fork frame 100 can be hinged between the hinge shaft and the hinge seat at the root position of the A-frame 6. After the installation is completed, the lifting main hook and the second telescopic cylinder 5 are used to adjust the combined action so that the other end of the push-pull fork frame 100 can be hinged between the hinge shaft and the hinge seat at the middle position of the pile frame 7.

[0100] After the push-pull fork frame 100 is connected, the sling is untied, the relevant electrical and hydraulic components on the push-pull fork frame 100 are installed, and the lifting main hook is connected to the pile frame 7 again.

[0101] When the full-revolving crane pile driver needs to be towed, the push-pull fork frame 100 can be fixed by simply connecting the two end hinge shafts of the herringbone frame 6 and the pile frame 7, without removing the push-pull fork frame 100.

[0102] When the push-pull fork frame 100 needs major repair and maintenance, the electrical and hydraulic components at the relative motion positions on the push-pull fork frame 100 are disassembled in advance, and the push-pull fork frame 100 is connected with a lifting main hook by a sling. The hinge shaft hinged to the pile frame 7 is first disassembled, and then the lifting main hook and the full-rotation lifting pile driver are used to change the amplitude of the joint action to put the push-pull fork frame 100 in a suitable position. When the hinge shaft hinged to the herringbone frame 7 does not bear its own weight, the hinge shaft hinged to the herringbone frame 7 is disassembled, and finally the lifting main hook and the full-rotation lifting pile driver are used to change the amplitude of the joint action and the rotation to place the push-pull fork frame 100 to a suitable position on the hull for related maintenance work.

[0103] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A push-pull fork frame of a fully-rotating crane pile driver for offshore vessels, characterized in that: It includes a primary fork frame, a secondary fork frame, a tertiary fork frame, a first telescopic oil cylinder and a second telescopic oil cylinder; The rear end of the primary fork frame is movably connected to the root position of the herringbone frame; The rear end of the secondary fork frame is inserted into the front end of the primary fork frame; The rear end of the third-level fork frame is inserted into the front end of the second-level fork frame; The front end of the three-stage fork frame is movably connected to the middle position of the pile frame; The fixed end of the first telescopic oil cylinder is arranged on the first-level fork frame, and the movable end is arranged on the second-level fork frame; The fixed end of the second telescopic oil cylinder is arranged on the secondary fork frame, and the movable end is arranged on the tertiary fork frame.

2. The push-pull fork frame of the full-rotation crane pile driver for offshore vessels according to claim 1, characterized in that: The primary fork frame comprises a primary telescopic rod and a primary fixed rod; The first-level telescopic rods include two, which are arranged in parallel; The first-level telescopic rods are all configured as hollow structures, and the front end of the first-level telescopic rods is configured as an open structure, and the open structure passes through the hollow structure; The rear end of the primary telescopic rod is movably connected to the root position of the herringbone frame through a hinge shaft; There are two primary fixing rods, one of which is connected between the rear ends of the two primary telescopic rods, and the other is connected between the front ends of the two primary telescopic rods; The fixed end of the first telescopic oil cylinder is connected between the two primary fixing rods; An oil cylinder bracket is also arranged between the two primary fixing rods.

3. The push-pull fork frame of the full-rotation crane pile driver for offshore vessels according to claim 2 is characterized in that: The first telescopic oil cylinder is provided with two or more.

4. The push-pull fork frame of the full-rotation crane pile driver for offshore vessels according to claim 2, characterized in that: The secondary fork frame includes a secondary telescopic rod and a secondary fixed rod; The secondary telescopic rods include two rods which are arranged in parallel; The secondary telescopic rods are all configured as hollow structures, and the front end of the secondary telescopic rods is configured as an open structure, and the open structure passes through the hollow structure; The rear end of the secondary telescopic rod is inserted into the primary telescopic rod along the opening structure at the front end of the primary telescopic rod; The secondary fixing rod is connected between the front ends of the two secondary telescopic rods; The movable end of the first telescopic oil cylinder is connected to the secondary fixing rod; The front end of the fixed end of the second telescopic oil cylinder is connected to the secondary fixing rod, and the rear end is placed on the oil cylinder bracket.

5. The push-pull fork frame of the full-rotation crane pile driver for offshore vessels according to claim 4, characterized in that: The second telescopic oil cylinder is provided with two or more.

6. The push-pull fork frame of the full-rotation crane pile driver for offshore vessels according to claim 4, characterized in that: The three-stage fork frame includes three-stage telescopic rods and three-stage fixed rods; The three-stage telescopic rods include two, which are arranged in parallel; The three-stage telescopic rods are all configured as hollow structures and reinforced in sections within the hollow structures. The front ends of the three-stage telescopic rods are movably connected to the middle position of the pile frame via hinge shafts. The rear end of the third telescopic rod is inserted into the second telescopic rod along the opening structure at the front end of the second telescopic rod; The movable end of the second telescopic oil cylinder is connected to the three-stage fixing rod.

7. The push-pull fork frame of the full-rotation crane pile driver for offshore vessels according to claim 6, characterized in that: The first-stage telescopic rod, the second-stage telescopic rod, and the third-stage telescopic rod are all rectangular tubes welded with high-strength steel; A reinforcing copper sheet is further provided between the primary telescopic rod and the secondary telescopic rod, and between the secondary telescopic rod and the tertiary telescopic rod.

8. The push-pull fork frame of the offshore full-rotation crane pile driver according to claim 1, characterized in that: The cross-sectional height h and width ι of the push-pull fork frame are set as follows: h+ι≥G2 / 2(2[σ]t) Among them, G2 represents the deadweight of the push-pull fork frame; σ represents the allowable stress of high-strength steel of the rectangular tube; t represents the wall thickness of the rectangular tube.

9. The push-pull fork frame of the offshore full-rotation crane pile driver according to claim 7, characterized in that: The distance L between the first-stage telescopic rod / the second-stage telescopic rod / the third-stage telescopic rod in the push-pull fork frame is set as follows: M=(F1+F2)*L Among them, M represents the fixed force couple formed by the external force on the push-pull fork frame; F1 and F2 represent the comprehensive forces of the two first-level telescopic rods / second-level telescopic rods / third-level telescopic rods respectively.

10. A method for loading and unloading a push-pull fork frame of a fully-rotating crane pile driver for offshore vessels according to any one of claims 1 to 9, characterized in that: When the push-pull fork frame is installed for the first time, the full-revolving crane pile driver is operated, and the main lifting hook thereof is used to connect the push-pull fork frame with a sling, and the combined action of the amplitude change and rotation of the full-revolving crane pile driver is used to adjust so that one end of the push-pull fork frame is hinged to the hinge seat at the root position of the A-frame through the hinge shaft, and then the combined action of the main lifting hook and the second telescopic oil cylinder is used to adjust so that the other end of the push-pull fork frame is hinged to the hinge seat at the middle position of the pile frame through the hinge shaft; After the push-pull fork frame is connected, the sling is untied, the relevant electrical and hydraulic components on the push-pull fork frame are installed, and the lifting main hook is connected to the pile frame; When the full-rotation crane pile driver needs to be towed, the push-pull fork frame is fixed by connecting the two end hinge shafts of the herringbone frame and the pile frame, without removing the push-pull fork frame; When the push-pull fork frame needs major repair and maintenance, first dismantle the electrical and hydraulic components at the relative motion position on the push-pull fork frame, use the lifting main hook, adopt the sling to connect the push-pull fork frame, first dismantle the hinge shaft hinged to the pile frame, then use the lifting main hook and the full-rotating lifting pile driver to dismantle the hinge shaft hinged to the herringbone frame, finally use the lifting main hook, the full-rotating lifting pile driver to move the luffing and rotation, place the push-pull fork frame on the hull for related maintenance work.

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