A closing guide tool for pile leg rack and closing method thereof

Abstract

The present invention relates to the technical field of pile legs, and discloses a closing guide tool for a pile leg rack, comprising a docking adjustment component and a distance adjustment component, wherein the docking adjustment component comprises a first positioning beam and a second positioning beam, wherein the first positioning beam is provided with a first sliding groove, a tooth groove positioning member is clamped in the tooth groove of the pile leg rack, a positioning fixture connected to the second sliding groove of the second positioning beam can clamp the pile leg rack up and down, and a connecting member clamps and fixes the first positioning beam and the second positioning beam, and the first positioning beam and the second positioning beam form a cross structure; the distance adjustment component comprises a rotating block and two connecting screws respectively connected to the front and rear ends of the rotating block; the docking adjustment component is provided with two groups, one connecting screw is threadedly connected to a first positioning beam, and the other connecting screw is threadedly connected to the other first positioning beam; a method for closing the pile leg rack is also disclosed. The present invention can accurately adjust the tooth pitch between the two pile leg racks to ensure accurate docking, and quickly complete the closing operation of the pile leg racks.

Description

Technical Field

[0001] The present invention relates to the technical field of pile legs, in particular to a closing guide tool for a pile leg rack and a closing method thereof. Background Art

[0002] The racks on the pile legs of various offshore platforms are usually composed of multiple sections connected to form a whole pile leg rack, which is then welded to the offshore platform pile leg. The racks are made of ultra-high-strength steel and are machined parts, which require high installation accuracy such as pitch control. When conventional racks are assembled, the pitch needs to be adjusted to precise and qualified data. If ordinary code plates are welded on the racks as adjustment fixed points, welding cracks are likely to occur, making rework extremely difficult. Summary of the Invention

[0003] The purpose of the present invention is to provide a closing guide tool for a pile leg rack and a closing method thereof, so as to accurately adjust the tooth pitch between two pile leg racks to ensure accurate docking and realize the rapid completion of the closing operation of the pile leg racks.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a closure guide tool for a pile leg rack, wherein the top surface and / or bottom surface of the pile leg rack is provided with teeth, and the closure guide tool for the pile leg rack is connected to two adjacent pile leg racks to be closed, and the closure guide tool for the pile leg rack includes a docking adjustment component and a distance adjustment component, and the docking adjustment component includes a first positioning beam, a second positioning beam, a tooth groove positioning piece and a positioning clamp, the first positioning beam is provided with a first slide groove arranged along the length direction of the pile leg rack, the tooth groove positioning piece is clamped on the tooth groove of the pile leg rack, and the tooth groove positioning piece includes a first positioning rod and a second positioning rod, the first end of the first positioning rod is hingedly connected to the first end of the second positioning rod, the second end of the first positioning rod and the second end of the second positioning rod are both connected to the first slide groove, and the second positioning beam is provided with a first slide groove arranged along the length direction of the pile leg rack. The second sliding groove is arranged in the width direction of the rack, the positioning clamp is connected to the second sliding groove, and the positioning clamp can clamp the pile leg rack up and down, and the second positioning beam is provided with a connecting piece, and the connecting piece is sequentially passed through the first sliding groove and the second sliding groove and clamps the first positioning beam and the second positioning beam to form a cross structure; the distance adjustment assembly includes a rotating block and two connecting screws respectively connected to the front and rear ends of the rotating block; the docking adjustment assembly is provided with two groups, one connecting screw is threadedly connected to one group of the first positioning beams, and the other connecting screw is threadedly connected to the first positioning beams of the other group; when the rotating block is rotated forward, the two first positioning beams gradually approach each other; when the rotating block is rotated reversely, the two first positioning beams gradually move away from each other.

[0005] As a preferred solution of the present invention, the positioning fixture includes two clamping rods, the first end of the clamping rods is connected to the second slide groove, the clamping rods are clamped in the tooth groove of the pile leg rack, the two clamping rods are clamped on the upper and lower sides of the pile leg rack, and the line connecting the center points of the two clamping rods is perpendicular to the axis of the pile leg rack.

[0006] As a preferred solution of the present invention, a limit block is provided at the second end of the clamping rod, and the limit blocks of the two clamping rods are against the rear end surface of the pile leg rack, and the pile leg rack is located between the limit block and the second positioning beam.

[0007] As a preferred solution of the present invention, the docking adjustment assembly also includes a flatness adjustment component, which includes a positioning rod and a connecting rod. The positioning rod includes a positioning cylinder connected to the side of the second positioning beam and a locking rod threadedly connected to the positioning cylinder. One end of the connecting rod is provided with a connecting ring, and the other end of the connecting rod is provided with a connecting sleeve. The connecting sleeve is threadedly connected to a push rod, and the end of the push rod is pressed against the front end surface of the pile leg rack. There are multiple connecting rods, and the connecting ring of the connecting rod is sleeved on the locking rod, and a limiting head is provided on the top of the locking rod. The locking rod is threadedly connected to the positioning cylinder and the limiting head presses all the connecting rings onto the positioning cylinder.

[0008] As a preferred solution of the present invention, the clamping rod is clamped in the first tooth groove of the pile leg rack close to the end to be welded, and each docking adjustment assembly is provided with a plurality of the tooth groove positioning members spaced apart along the length direction of the pile leg rack.

[0009] As a preferred solution of the present invention, the positioning cylinder is connected to the side surface of the second positioning beam close to the end of the pile leg rack to be welded.

[0010] As a preferred solution of the present invention, a through hole is provided on the rotating block, the axis of the through hole is perpendicular to the axis of the connecting screw, and a torsion rod is inserted into the through hole.

[0011] In addition, the present invention also provides a method for closing a pile leg rack, using the aforementioned pile leg rack closing guide tooling, and the method for closing the pile leg rack comprises the following steps:

[0012] Step 1: Place the docking adjustment assembly in a one-to-one correspondence with the leg rack, set the tooth groove positioning member of the docking adjustment assembly on the tooth groove of the leg rack, and adjust the positions of the first end of the first positioning rod and the first end of the second positioning rod on the first chute according to the angle of the tooth groove of the leg rack, so that the angle of the tooth groove positioning member matches the tooth groove angle of the leg rack;

[0013] Step 2: Adjust the position of the second positioning beam in the first chute, and fix the second positioning beam to the first positioning beam through the connecting member;

[0014] Step 3: Adjust the position of the positioning fixture in the second chute, and make the positioning fixture clamp the pile leg rack up and down;

[0015] Step 4: Rotate the rotating block to move the two first positioning beams closer to or farther away from each other, and simultaneously move the two pile leg racks closer to or farther away from each other.

[0016] As a preferred solution of the present invention, the positioning fixture includes two clamping rods, the first ends of the clamping rods are connected to the second slide groove, the clamping rods are clamped in the tooth groove of the pile leg rack, the two clamping rods are clamped on both sides of the pile leg rack, and the line connecting the center points of the two clamping rods is perpendicular to the axis of the pile leg rack; the second ends of the clamping rods are provided with a limit block, the limit blocks of the two clamping rods are against the rear end surface of the pile leg rack, and the pile leg rack is located between the limit block and the second positioning beam; the docking adjustment assembly also includes a flatness adjustment component, the flatness adjustment component The cam is threadably connected to the side of the second support frame, and the cam is secured to the side of the second support frame with an angular channel formed between the end of the cam and the side of the second support frame. The cam is secured to the side of the second support frame with an angular channel formed between the end of the cam and the side of the second support frame.

[0017] In step 3, the vertical position of the pile leg rack is first adjusted, and the vertical position of the pile leg rack is further adjusted by adjusting the vertical height positions of the first ends of the two clamping rods in the second chute, and the pile leg rack is clamped between the two clamping rods;

[0018] After the front and rear position of the pile leg rack is adjusted, the limit block of the clamping rod and the end of the clamping rod clamp the pile leg rack, and the first end of the clamping rod is fixed on the second slide groove.

[0019] As a preferred solution of the present invention, it also includes step 5, when the welding spacing between the two pile leg racks is greater than the preset spacing, welding a repair extension layer on the end to be welded of the pile leg racks, so that the welding spacing between the two pile leg racks is within the preset spacing range; when the welding spacing between the two pile leg racks is less than the preset spacing, cutting off the excess part at the end to be welded of the pile leg racks, so that the welding spacing between the two pile leg racks is within the preset spacing range.

[0020] Compared with the prior art, the closure guide fixture for the pile leg rack and the closure method thereof according to the embodiment of the present invention have the following beneficial effects:

[0021] The present invention can be clamped on the rack tooth groove by the tooth groove positioning member, and the tooth groove positioning member serves as a limiting structure for driving the pile leg rack to the left and right, and the first positioning rod and the second positioning rod of the tooth groove positioning member can be adjusted to the connection position on the first slide slot to adjust the angle and position of the tooth groove positioning member according to the angle of the tooth groove. It can be applicable to different types of pile leg racks and has good versatility. The positioning fixture can adjust the connection position on the second slide slot to adjust the up and down position of the pile leg rack. By rotating the rotating block, the two first positioning beams are moved closer or farther away, and the pile leg racks are simultaneously moved closer or farther away to accurately adjust the tooth pitch between the two pile leg racks to ensure accurate docking, thereby quickly completing the closing operation of the pile leg rack and being simple to operate. In addition, the positioning fixture can clamp the pile leg rack up and down, and at the same time, the first positioning beam is connected and fixed to the second positioning beam to ensure that the pile leg rack will not tip over when the rotating block acts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 1 is a schematic structural diagram of a closure guide tool for a pile leg rack provided by an embodiment of the present invention;

[0023] Figure 2 is a structural diagram of a positioning fixture provided by an embodiment of the present invention;

[0024] Figure 3is a schematic structural diagram of a flatness adjustment component provided by an embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of a repair extension layer provided by an embodiment of the present invention;

[0026] In the figure, there are the first positioning beam 1, the first slide groove 11, the second positioning beam 2, the second slide groove 21, the connecting member 22, the tooth groove positioning member 3, the first positioning rod 31, the second positioning rod 32, the positioning fixture 4, the clamping rod 41, the limit block 42, the distance adjustment assembly 5, the rotating block 51, the connecting screw 52, ​​the flatness adjustment member 6, the positioning rod 61, the positioning cylinder 611, the locking rod 612, the connecting rod 62, the connecting ring 621, the connecting sleeve 622, the top rod 63, the pile leg rack 7, the repair extension layer 71, the first extension layer 711, and the second extension layer 712. DETAILED DESCRIPTION

[0027] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. used in the present invention to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] like Figures 1 to 3As shown, a preferred embodiment of a pile leg rack closing guide tooling provided by the present invention, the top surface or / and bottom surface of the pile leg rack 7 is provided with teeth, and the pile leg rack closing guide tooling is connected to the two adjacent pile leg racks 7 to be closed, and the pile leg rack closing guide tooling includes a docking adjustment component and a distance adjustment component 5, and the docking adjustment component includes a first positioning beam 1, a second positioning beam 2, a tooth groove positioning member 3 and a positioning clamp 4, the first positioning beam 1 is provided with a first slide groove 11 arranged along the length direction of the pile leg rack 7, the tooth groove positioning member 3 is clamped on the tooth groove of the pile leg rack 7, and the tooth groove positioning member 3 includes a first positioning rod 31 and a second positioning rod 32, the first end of the first positioning rod 31 is hingedly connected to the first end of the second positioning rod 32, the second end of the first positioning rod 31 and the second end of the second positioning rod 32 are respectively fixedly connected to the first slide groove 11 by bolts and nuts, and the second positioning beam 2 is provided with a second slide groove 2 arranged along the width direction of the pile leg rack 7 1, the positioning fixture 4 is connected to the second slide groove 21, and the positioning fixture 4 can clamp the pile leg rack 7 up and down, and the second positioning beam 2 is provided with a connecting piece 22, and the connecting piece 22 is a screw-nut assembly, and the connecting piece 22 is sequentially passed through the first slide groove 11 and the second slide groove 21 and clamps the first positioning beam 1 and the second positioning beam 2 to form a cross structure; the distance adjustment component 5 includes a rotating block 51 and two connecting screws 52 respectively connected to the front and rear ends of the rotating block 51, and the threads of the two connecting screws 52 are opposite; the docking adjustment component is provided with two groups, one of the connecting screws 52 is threadedly connected to one group of the first positioning beam 1, and the other connecting screw 52 is threadedly connected to the first positioning beam 1 of the other group; when the rotating block 51 is rotated forward, the two first positioning beams 1 gradually approach each other; when the rotating block 51 is rotated backward, the two first positioning beams 1 gradually move away from each other.

[0030] Specifically, the positioning fixture 4 includes two clamping rods 41, the first end of the clamping rod 41 is locked on the second slide groove 21 by a nut, and the clamping rod 41 is clamped in the tooth groove of the pile leg rack 7, and the two clamping rods 41 are clamped on the upper and lower sides of the pile leg rack 7, and the line connecting the center points of the two clamping rods 41 is perpendicular to the axis of the pile leg rack 7, which is convenient for clamping the pile leg rack 7 and adjusting the position of the positioning fixture 4 at the same time; specifically, when the pile leg rack 7 has teeth on only one end face of the top or bottom surface, and the other end face is flat, one clamping rod 41 is clamped on the tooth groove on the top surface of the rack, and the other clamping rod 41 is clamped on the flat surface of the bottom surface of the rack, and the two clamping rods 41 are symmetrically arranged; when the top and bottom end faces of the pile leg rack 7 are provided with teeth, the two clamping rods 41 are symmetrically clamped on the tooth groove on the top surface of the rack and the tooth groove on the bottom surface of the rack.

[0031] Furthermore, a limit block 42 is provided at the second end of the clamping rod 41. The limit blocks 42 of the two clamping rods 41 are against the rear end surface of the pile leg rack 7. The pile leg rack 7 is located between the limit block 42 and the second positioning beam 2. The limit block 42 can clamp the pile leg rack 7 front and back to ensure that the pile leg rack 7 and the docking adjustment assembly will not tip over when the rotating block 51 acts.

[0032] Exemplarily, the docking adjustment assembly further includes a flatness adjustment member 6, which includes a positioning rod 61 and a connecting rod 62. The positioning rod 61 includes a positioning tube 611 connected to the side of the second positioning beam 2 and a locking rod 612 threadedly connected to the positioning tube 611. One end of the connecting rod 62 is provided with a connecting ring 621, and the other end of the connecting rod 62 is provided with a connecting sleeve 622. The connecting sleeve 622 is threadedly connected with a push rod 63, and the end of the push rod 63 is pressed against the front end surface of the pile leg rack 7. There are multiple connecting rods 62, and the connecting ring 621 of the connecting rod 62 is sleeved on the locking rod 612. A limit head is provided at the top of the locking rod 612, and the locking rod 612 is threadedly connected to the positioning tube 611, and the limit head presses all the connecting rings 621 onto the positioning tube 611, so that the position of each connecting rod 62 can be adjusted as needed, and multiple connecting rods 62 can be of inconsistent lengths, so that the top rod 63 can act on different positions of the pile leg rack 7, and can accurately adjust the front and rear positions of the pile leg rack 7. By pressing the top rod 63 against the front end surface of the pile leg rack 7 and the limit block 42 against the rear end surface of the pile leg rack 7, the front and rear positions of the pile leg rack 7 can be adjusted by adjusting and cooperating the two, so that the two pile leg racks 7 can be accurately closed.

[0033] Preferably, the clamping rod 41 is clamped in the first tooth groove of the pile leg rack 7 close to the end to be welded of the pile leg rack 7. Each docking adjustment assembly is provided with a plurality of the tooth groove positioning members 3 arranged at intervals along the length direction of the pile leg rack 7. The number of the tooth groove positioning members 3 is adjusted according to actual needs to improve the stability of the left and right adjustment of the pile leg rack 7.

[0034] Specifically, the positioning tube 611 is connected to the side of the second positioning beam 2 close to the end of the pile leg rack 7 to be welded, which can more accurately adjust the front and rear positions of the end of the pile leg rack 7 to be welded, ensuring high closing accuracy of the two pile leg racks 7.

[0035] Preferably, a through hole is provided on the rotating block 51, the axis of the through hole is perpendicular to the axis of the connecting screw 52, ​​there are two through holes, and the two through holes are arranged in a cross shape, and a torsion rod is movably inserted into the through hole. When the rotating block 51 needs to be rotated, the torsion rod is inserted into the through hole to rotate the rotating block 51. It is convenient to use, and the through hole to be inserted can be selected according to the needs of use to reduce interference with other components when the rotating block 51 rotates.

[0036] The present invention also provides a method for closing a pile leg rack, using the pile leg rack closing guide tooling, and the method for closing the pile leg rack comprises the following steps:

[0037] Step 1: Place the docking adjustment assembly in a one-to-one correspondence with the leg rack 7, set the tooth groove positioning member 3 of the docking adjustment assembly on the tooth groove of the leg rack 7, and adjust the positions of the first end of the first positioning rod 31 and the first end of the second positioning rod 32 on the first chute 11 according to the angle of the tooth groove of the leg rack 7, so that the angle of the tooth groove positioning member 3 matches the tooth groove angle of the leg rack 7;

[0038] Step 2: Adjust the position of the second positioning beam 2 in the first chute 11 and fix the second positioning beam 2 to the first positioning beam 1 through the connecting member 22;

[0039] Step 3: Adjust the position of the positioning fixture 4 in the second chute 21 and make the positioning fixture 4 clamp the pile leg rack 7 up and down;

[0040] Step 4: Rotate the rotating block 51 to move the two first positioning beams 1 closer to or farther away from each other, and simultaneously move the two pile leg racks 7 closer to or farther away from each other, and adjust the tooth pitch between the two pile leg racks 7;

[0041] Step 5, closing and welding the two pile leg racks 7;

[0042] Specifically, during the closing operation of the pile leg rack 7 , the position of the pile leg rack 7 is continuously measured by a total station to accurately adjust the position of the pile leg rack 7 .

[0043] Exemplarily, the positioning fixture 4 includes two clamping rods 41, the first ends of the clamping rods 41 are connected to the second slide groove 21, the clamping rods 41 are clamped in the tooth groove of the pile leg rack 7, the two clamping rods 41 are clamped on both sides of the pile leg rack 7, and the line connecting the center points of the two clamping rods 41 is perpendicular to the axis of the pile leg rack 7; the second ends of the clamping rods 41 are provided with a limit block 42, the limit blocks 42 of the two clamping rods 41 are against the rear end surface of the pile leg rack 7, and the pile leg rack 7 is located between the limit block 42 and the second positioning beam 2; the docking adjustment assembly also includes a flatness adjustment component 6, the flatness adjustment component 6 includes a positioning rod 61 and a connecting rod 62, the positioning rod 61 includes A positioning cylinder 611 connected to the side of the second positioning beam 2 and a locking rod 612 threadedly connected to the positioning cylinder 611, one end of the connecting rod 62 is provided with a connecting ring 621, and the other end of the connecting rod is provided with a connecting sleeve 622, the connecting sleeve 622 is threadedly connected to a push rod 63, the end of the push rod 63 is pressed against the front end surface of the pile leg rack 7, a plurality of connecting rods 62 are provided, the lengths of the connecting rods 62 may be different, and the connecting ring 621 of the connecting rod 62 is sleeved on the locking rod 612, and a limiting head is provided on the top of the locking rod 612, the locking rod 612 is threadedly connected to the positioning cylinder 611, and the limiting head presses all the connecting rings 621 onto the positioning cylinder 611;

[0044] In the step 3, first adjust the up and down position of the pile leg rack 7, and adjust the up and down height position of the pile leg rack 7 by adjusting the first ends of the two clamping rods 41 in the second slide groove 21, and the pile leg rack 7 is clamped between the two clamping rods 41; then adjust the front and rear position of the pile leg rack 7, first loosen the locking rod 612, and then rotate and adjust the position of each of the connecting rods 62, and then lock the locking rod 612, and then fix the position of each of the connecting rods 62. When the pile leg rack 7 needs to move backward, rotate the push rod 63 in the forward direction to move the push rod 63 backward. When the pile leg rack 7 needs to move forward, the top rod 63 is rotated in the opposite direction to move the top rod 63 forward, and the first end of the clamping rod 41 is released from the second slide 21, so that the clamping rod 41 synchronously drives the pile leg rack 7 to move forward; after the front and rear positions of the pile leg rack 7 are adjusted, the limit block 42 of the clamping rod 41 and the end of the clamping rod 41 clamp the pile leg rack 7, and the first end of the clamping rod 41 is fixed on the second slide 21.

[0045] Furthermore, the method for closing the pile leg rack further includes step 5, when the welding distance between the two pile leg racks 7 is greater than the preset distance, welding the repair extension layer 71 on the end to be welded of the pile leg rack 7, the end to be welded of the pile leg rack 7 is preferably an X-shaped groove, and the preset distance between the two pile leg racks 7 is very small, Figure 4 The numbers shown on the repair extension layer 71 are the surfacing order. The specific operation of the repair extension layer 71 is: first, surfacing welding is performed point by point from the top of the slope to the top of the slope on one side of the end to be welded of the pile leg rack 7 to form a first extension layer I, and then surfacing welding is performed point by point from the top of the slope to the top of the slope on the other side of the end to be welded of the pile leg rack 7 to form a first extension layer II. The first extension layer I and the first extension layer II form a first extension layer 711. Then, surfacing welding is performed point by point from the top of the slope to the top of the slope on the first extension layer I to form a second extension layer I. Then, surfacing welding is performed point by point from the top of the slope to the top of the slope on the first extension layer II to form a second extension layer II. The second extension layer I and the second extension layer II form a second extension layer Layer 712, N layers of extension layers are welded as needed, and the welding operation of each extension layer is the same as the welding operation of the first extension layer 711, so that the welding spacing between the two pile leg racks 7 is within the preset spacing range, compensating for the size problem of the two pile leg racks 7 without affecting the tooth pitch accuracy between the two pile leg racks 7; when the welding spacing between the two pile leg racks 7 is less than the preset spacing, flame cutting is performed on the end of the pile leg rack 7 to be welded to remove the excess part; when the welding spacing between the two pile leg racks 7 is within the preset spacing range, the two pile leg racks 7 are closed and welded, so that the tooth pitch accuracy between the two pile leg racks 7 is high.

[0046] When the gears are connected to the rack, the gears 3 are locked and the gears 3 are locked.

[0047] In the description of the present invention, it should be understood that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" used in the present invention should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A guide fixture for closing a pile leg rack, wherein the top surface and / or bottom surface of the pile leg rack is provided with teeth, characterized in that: The camming member is a pair of camming members, each of which is connected to the second end of the camming member by a toothed connection, and the camming member is connected to the first end of the camming member by a toothed connection. The two clamping rods are connected to each other at the first end and the second end, and the clamping rod is clamped in the tooth groove of the pile leg rack. The two clamping rods are clamped on the upper and lower sides of the pile leg rack, and the line connecting the center points of the two clamping rods is perpendicular to the axis of the pile leg rack. The second end of the clamping rod is provided with a limit block, and the limit blocks of the two clamping rods are against the rear end surface of the pile leg rack. The pile leg rack is located between the limit block and the second positioning beam. The clamping rod is clamped on the first tooth of the pile leg rack close to the end to be welded when the pile leg rack is closed. Grooves, each docking adjustment assembly is provided with a plurality of tooth groove positioning members spaced apart along the length direction of the pile leg rack; the distance adjustment assembly includes a rotating block and two connecting screws respectively connected to the front and rear ends of the rotating block; the docking adjustment assembly is provided with two groups, one connecting screw is threadedly connected to the first positioning beam of one group, and the other connecting screw is threadedly connected to the first positioning beam of the other group; when the rotating block is rotated forward, the two first positioning beams gradually approach each other; when the rotating block is rotated backward, the two first positioning beams gradually move away from each other.

2. The leg rack closing guide fixture according to claim 1, characterized in that: The docking adjustment assembly also includes a flatness adjustment component, which includes a positioning rod and a connecting rod. The positioning rod includes a positioning cylinder connected to the side of the second positioning beam and a locking rod threadedly connected to the positioning cylinder. One end of the connecting rod is provided with a connecting ring, and the other end of the connecting rod is provided with a connecting sleeve. The connecting sleeve is threadedly connected to a push rod, and the end of the push rod is pressed against the front end surface of the pile leg rack. There are multiple connecting rods, and the connecting ring of the connecting rod is sleeved on the locking rod, and a limiting head is provided on the top of the locking rod. The locking rod is threadedly connected to the positioning cylinder and the limiting head presses all the connecting rings onto the positioning cylinder.

3. The leg rack closing guide fixture according to claim 2, characterized in that: The positioning tube is connected to the side surface of the second positioning beam close to the end of the pile leg rack to be welded.

4. The leg rack closing guide fixture according to claim 1, characterized in that: A through hole is provided on the rotating block, the axis of the through hole is perpendicular to the axis of the connecting screw, and a torsion rod is inserted into the through hole.

5. A method for closing a pile leg rack, characterized in that: Using the leg rack closing guide fixture according to any one of claims 1 to 4, the leg rack closing method comprises the following steps: Step 1: Place the docking adjustment assembly in a one-to-one correspondence with the leg rack, set the tooth groove positioning member of the docking adjustment assembly on the tooth groove of the leg rack, and adjust the positions of the first end of the first positioning rod and the first end of the second positioning rod on the first chute according to the angle of the tooth groove of the leg rack, so that the angle of the tooth groove positioning member matches the tooth groove angle of the leg rack; Step 2: Adjust the position of the second positioning beam in the first chute, and fix the second positioning beam to the first positioning beam through the connecting member; Step 3: Adjust the position of the positioning fixture in the second chute, and make the positioning fixture clamp the pile leg rack up and down; Step 4: rotating the rotating block to move the two first positioning beams closer or farther away, synchronously moving the two pile leg racks closer or farther away, and adjusting the tooth pitch between the two pile leg racks; Step 5: weld the two pile leg racks together.

6. The method for closing the pile leg rack according to claim 5, characterized in that: The positioning fixture includes two clamping rods, the first ends of the clamping rods are connected to the second slide groove, the clamping rods are clamped in the tooth groove of the pile leg rack, the two clamping rods are clamped on both sides of the pile leg rack, and the line connecting the center points of the two clamping rods is perpendicular to the axis of the pile leg rack; the second ends of the clamping rods are provided with a limit block, the limit blocks of the two clamping rods are against the rear end surface of the pile leg rack, and the pile leg rack is located between the limit block and the second positioning beam; the docking adjustment assembly also includes a flatness adjustment component, which includes a positioning rod and A connecting rod, the positioning rod includes a positioning tube connected to the side of the second positioning beam and a locking rod threadedly connected to the positioning tube, one end of the connecting rod is provided with a connecting ring, the other end of the connecting rod is provided with a connecting sleeve, the connecting sleeve is threadedly connected to a push rod, the end of the push rod is tightly against the front end surface of the pile leg rack, the connecting rod is provided with a plurality of, and the connecting ring of the connecting rod is sleeved on the locking rod, and a limiting head is provided on the top of the locking rod, the locking rod is threadedly connected to the positioning tube, and the limiting head presses all the connecting rings onto the positioning tube; In step 3, the vertical position of the pile leg rack is first adjusted, and the vertical position of the pile leg rack is further adjusted by adjusting the vertical height positions of the first ends of the two clamping rods in the second chute, and the pile leg rack is clamped between the two clamping rods; After the front and rear position of the pile leg rack is adjusted, the limit block of the clamping rod and the end of the clamping rod clamp the pile leg rack, and the first end of the clamping rod is fixed on the second slide groove.

7. The method for closing the pile leg rack according to claim 5, characterized in that: In step 5, when the welding distance between the two pile leg racks is greater than the preset distance, a repair extension layer is welded on the end of the pile leg rack to be welded, so that the welding distance between the two pile leg racks is within the preset distance range; when the welding distance between the two pile leg racks is less than the preset distance, an excess portion is cut off at the end of the pile leg rack to be welded; When the welding distance between the two pile leg racks is within the preset distance range, the two pile leg racks are closed and welded.

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