A method for installing a pipe rib

Abstract

An auxiliary device and installation method for pipe rib plate installation, the pipe includes a main pipe, a branch pipe, a flange and a rib plate, the auxiliary device includes a base, two limit columns, two T-blocks, a rotating block, two slide bars and two L-shaped rib plate clamping rods, the L-shaped rib plate clamping rod includes a vertical rod, a horizontal rod and an elastic clamp; wherein the limit column is fixed to the lower part of the T-block and placed in the connecting hole of the flange, the two T-blocks are respectively inserted into the two sides of the base, the base is placed on the upper plane of the flange, the position of the base is adjusted to the center position of the flange and fixed by the scales on the two T-blocks, the rotating block is installed on the base and can rotate, the two slide bars are respectively connected to the two sides of the rotating block, the two L-shaped rib plate clamping rods are respectively vertically connected to the two slide bars, the rib plates are respectively clamped on the elastic clamps, the position of the L-shaped rib plate clamping rod is adjusted by the rotation of the rotating block, the sliding of the slide bar and the lifting of the vertical rod, so that the rib plate is adjusted to the pre-installed position, and the rib plate is welded. The invention has the advantages of high precision, flexible adjustment, convenient operation, high efficiency and wide application range.

Description

Technical Field

[0001] The invention relates to a manufacturing process of a marine low-speed diesel engine pipe fitting, in particular to an installation method of a pipe fitting rib plate, and belongs to the technical field of diesel engine manufacturing. Background Art

[0002] In the installation of pipe fittings for marine low-speed diesel engines, in order to ensure the strength of the installation, many pipe fittings need to be installed with reinforcing ribs, such as the fuel inlet main pipe system, the fuel return main pipe system, the cylinder liner cooling water inlet main pipe, the cylinder liner cooling water outlet main pipe, etc., especially some branch pipe parts need to be welded and installed with ribs.

[0003] The installation workload of each diesel engine rib plate is very large. According to rough calculations, each main engine needs to install nearly 150 rib plates. The rib plate installation process is generally after the electric welding of the main pipe. The existing installation operation process of marine diesel engine pipe rib plates is relatively complicated. Generally, there are no special tools or tooling to assist, but two people are required to cooperate in manual installation. During installation, the welder uses visual inspection to determine the centering and verticality of the rib plate installation position without tooling or tools. In this way, after installation, the rib plate is often misaligned and tilted, which affects the reinforcement effect of the rib plate after installation. Summary of the invention

[0004] The purpose of the present invention is to solve the problems of low work efficiency, high labor time and low installation precision in the existing installation of pipe rib plates, and to provide a method for installing pipe rib plates, so as to improve the installation precision of rib plates, reduce the number of operators, improve work efficiency and ensure the reliability of rib plate installation.

[0005] Based on the above purpose, the technical solution provided by the present invention is as follows:

[0006] A method for installing a pipe rib plate, the pipe fitting refers to a main pipe and a branch pipe cross-connected to each other on a marine low-speed diesel engine, the branch pipe is provided with a flange, and the rib plate is connected between the main pipe and the branch pipe, characterized in that: the installation method is realized by an auxiliary device, the auxiliary device comprises a base, two limit columns, two T-blocks, a rotating block, two sliding rods and two L-shaped rib plate clamping rods; the base comprises a body and a positioning shaft, the lower side surface of the body is provided with a horizontally arranged T-slot that penetrates along the longitudinal direction, and the two side surfaces are provided with threaded holes that communicate with the T-slot, and the positioning shaft is vertically connected to the center of the upper side surface of the body; the two limit columns are respectively vertically connected to the outer sides of the two T-blocks and inserted into the connecting holes of the flange for positioning, and the two T-blocks are respectively inserted from both ends into the The two guide wheels are connected to the base through the T-slot of the main body and can slide in the T-slot, and after positioning, they are fixed by the threaded hole and the fixing bolt; the rotating block is connected to the base through the positioning shaft and can rotate around the positioning shaft in a horizontal plane to adjust the angular position, and the two sliding rods are respectively connected to the two ends of the rotating block and can slide longitudinally on the rotating block to adjust the radial position; the two L-shaped rib plate clamping rods are vertically connected to the outer ends of the two sliding rods and can slide vertically on the sliding rod to adjust the height position, the L-shaped rib plate clamping rod comprises a vertical rod, a cross rod and an elastic clip, the vertical rod is connected to the sliding rod, the cross rod is horizontally arranged, one end is fixedly connected to the lower end of the vertical rod, and the other end is fixedly connected to the elastic clip, and the elastic clip is used to clamp the rib plate;

[0007] The installation method comprises the following steps:

[0008] 1) Install the base on the flange of the branch pipe - fix the limit column to the lower part of the T-block, and insert the two T-blocks into the T-slots of the base respectively, then put the limit column into the connecting hole of the flange, and place the base on the upper plane of the flange;

[0009] 2) Centering the base position - adjust the base position so that the scales on the two T-blocks remain the same, so that the base is placed in the center of the flange, and then fix the base position with fixing bolts;

[0010] 3) Installing the rotating block, two sliding bars and two L-shaped rib plate clamping bars: installing the rotating block on the base through the positioning shaft, and vertically connecting the two L-shaped rib plate clamping bars to the two sliding bars respectively, and then connecting the two sliding bars to the two sides of the rotating block respectively;

[0011] 4) Install the rib plate - clamp the two rib plates on the elastic clamps of the two L-shaped rib plate clamp rods respectively, adjust the height of the L-shaped rib plate clamp rod by lifting and lowering, adjust the distance between the elastic clamp and the branch pipe by sliding the slide rod, adjust the relative angle position of the elastic clamp and the flange by rotating the rotating block, so as to adjust the rib plate to the pre-installed position, then lock the position of the slide rod and the L-shaped rib plate clamp rod, and finally perform the welding operation of the rib plate.

[0012] As a further improvement, the T-block is a rod with a T-shaped cross-section, a fixing screw hole connected to the limiting column is provided on one side of the bottom surface, and a scale is provided on the top surface for adjusting the center position of the base.

[0013] As a further improvement, the limiting column is a stepped shaft, the large end of which is inserted into the connecting hole of the flange, and the small end is a stud connected to the T-block.

[0014] As a further improvement, a positioning hole connected to the positioning axis of the base is provided in the center of the lower plane of the rotating block, and square slide grooves are symmetrically provided along the longitudinal direction on both sides of the upper plane. Long waist through grooves that pass through the square slide grooves transversely are provided on the two side surfaces of the rotating block.

[0015] As a further improvement, the sliding rod is a rod with a square cross-section, one side of which is provided with a horizontal fixing through hole, and the other side of which is provided with a vertical guide hole. The end of the sliding rod on the same side of the guide hole is provided with an adjusting screw hole which is transversely connected to the guide hole. The vertical rod of the L-shaped rib plate clamp rod is inserted into the guide hole and is positioned by a screw connected to the adjusting screw hole. The sliding rod is arranged in the square sliding groove of the rotating block and is positioned by bolts and nuts which pass through the fixing through hole and the long waist through hole of the rotating block.

[0016] As a further improvement, the cross section of the vertical rod is square, and the guide hole is a square hole.

[0017] As a further improvement, the rotating block can rotate 360° on the base.

[0018] As a further improvement, the clamping opening of the elastic clamp is along the vertical direction.

[0019] Compared with the current installation process of rib plates, the present invention achieves the following beneficial effects:

[0020] 1. High installation accuracy: The base is positioned on the flange of the branch pipe through the T-block and the limit column, and is always kept in the center position through the scale on the T-block, so the positioning accuracy is high.

[0021] 2. Flexible adjustment and positioning: The rotating block can rotate 360°, and the L-shaped rib plate clamp rod can flexibly adjust the radial position through the sliding rod, so that the rib plate can be adjusted at any position.

[0022] 3. Wide range of applications: Because the T-block can adjust the radial position at will, it is suitable for the installation of pipe ribs with flanges of various diameters.

[0023] 4. Easy operation: After using the auxiliary device, the operation that originally required two people is reduced to one person, which is convenient to operate and saves labor.

[0024] 5. High working efficiency: The auxiliary device has high disassembly and assembly efficiency, which effectively improves the working efficiency of the installation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 This is the front view of the base.

[0027] Figure 3 yes Figure 2 Left view of .

[0028] Figure 4 yes Figure 2 Top view of the .

[0029] Figure 5 It is a schematic diagram of the limit column.

[0030] Figure 6 It is the front view of the T-block.

[0031] Figure 7 yes Figure 6 Left view of .

[0032] Figure 8 yes Figure 6 Top view of the .

[0033] Fig. 9 is the front view of the rotated block.

[0034] Fig.10 yes Fig. 9 Left view of .

[0035] Fig.11 yes Fig. 9 Top view of the .

[0036] Fig.12 This is the main view of the slider.

[0037] Fig.13 yes Fig.12 Left view of .

[0038] Fig.14 yes Fig.12 Top view of the .

[0039] Fig.15 It is the front view of the L-shaped rib clamp rod.

[0040] Fig.16 yes Fig.15 Top view of the .

[0041] Fig.17 It is a schematic diagram of the use state of the present invention.

[0042] In the figure,

[0043] A—main pipe, B—branch pipe, C—flange, D—ribbed plate, 1—base, 11—main body, 12—T-slot, 13—locating shaft, 14—screw hole, 2—limit column, 21—locating cylinder, 22—stud, 3—T-block, 31—fixing screw hole, 32—scale, 4—fixing bolt, 5—rotating block, 51—locating hole, 52—square slide groove, 53—long waist through groove, 6—slide rod, 61—guide hole, 62—fixing through hole, 63—adjusting screw hole, 7—bolt, 8—nut, 9—L-shaped ribbed plate clamp rod, 91—vertical rod, 92—cross rod, 93—elastic clip, 10—screw. DETAILED DESCRIPTION

[0044] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments. Any equivalent changes and modifications made based on the contents of this specification should fall within the technical scope of the present invention.

[0045] The present invention is used for the installation of ribs on pipe fittings. Fig.17 The pipe fitting specifically refers to the main pipe A and branch pipe B in various pipe systems on a marine low-speed diesel engine. The branch pipe B is provided with a flange C. The rib plate D is connected between the main pipe A and the branch pipe B which are cross-connected with each other. The cross-intersection can be vertical or oblique.

[0046] See also Figure 1 The auxiliary device for installing the pipe rib plate shown in the figure includes a base 1, two limit columns 2, two T-blocks 3, a rotating block 5, two sliding rods 6 and two L-shaped rib plate clamping rods 9.

[0047] Please refer to Figure 2 , Figure 3 and Figure 4The base 1 includes a body 11 and a positioning shaft 13. The body 11 is a rectangular parallelepiped component, and a horizontally arranged T-shaped slot 12 is provided on the lower side thereof for mounting the T-shaped block 3. The T-shaped slot 12 longitudinally penetrates the body 11, and threaded holes 14 are provided on both sides of the body 11, which cooperate with the fixing bolts 4 to lock the T-shaped block 3. The positioning shaft 13 is vertically connected to the center of the upper side of the body 11, and is used to connect the rotating block 5 for 360° rotation.

[0048] Please refer to Figure 6 , Figure 7 and Figure 8 The T-block 3 is a rod with a T-shaped cross section, and a fixing screw hole 31 is provided on one side of the bottom surface for connecting the limit column 2. A scale 32 is provided on the top surface of the T-block 3. Figure 1 The two T-blocks 3 are respectively inserted into the T-slot 12 of the body 11 from both ends and can slide in the T-slot 12; after the T-block 3 is positioned, the base 1 is adjusted to the center position of the flange C according to the scales 32 of the two T-blocks, and is fixed by screwing the M8 fixing bolts 4 into the threaded holes 14.

[0049] See also Figure 5 The limit column 2 is a stepped short shaft, the large end of which is a positioning cylinder 21, inserted into the connection hole of the flange C, and the small end is a stud 21, which is connected to the T-block 3 by screwing into the fixing screw hole 31; please refer to Figure 1 The two limiting columns 2 are respectively vertically connected to the outer sides of the two T-blocks 3 and inserted into the connecting holes of the flange C for positioning.

[0050] Please refer to Fig. 9 , Fig.10 and Fig.11 The lower plane of the rotating block 5 is provided with a positioning hole 51 in the center for connecting with the positioning shaft 13 of the base 1. The two sides of the upper plane of the rotating block 5 are symmetrically provided with longitudinal square grooves 52, and the two side surfaces are provided with long waist grooves 53 that pass through the square grooves 52 in the horizontal direction. Figure 1 The positioning shaft 13 is inserted into the positioning hole 51, and the rotating block 5 is connected to the base 1 and can rotate 360° around the positioning shaft 13 on the horizontal plane to adjust the angular position.

[0051] Please refer to Fig.12 , Fig.13 and Fig.14The slide bar 6 is a rod with a square cross section, with a horizontal fixing through hole 62 on one side and a vertical guide hole 61 on the other side. The guide hole 61 is a square hole. An adjusting screw hole 63 is provided at the end of the slide bar 6 on the same side as the guide hole 61. The adjusting screw hole 63 is horizontally connected to the guide hole 61. Figure 1 The two slide rods 6 are respectively arranged in the square slide grooves 52 at both ends of the rotating block 5, and can slide longitudinally in the square slide grooves 52 to adjust the radial position. After the slide rod 6 determines the position, the M4 bolt 7 and nut 8 pass through the long waist groove 53 of the rotating block 5 and the fixed through hole 62 of the slide rod 6 to position the slide rod 6.

[0052] Please refer to Fig.15 and Fig.16 The L-shaped rib plate clamping rod 9 includes a vertical rod 91, a horizontal rod 92 and an elastic clamp 93. The elastic clamp 93 is used to clamp the rib plate D, and its clamping opening is in the vertical direction; the horizontal rod 92 is horizontally arranged, one end of which is fixedly connected to the lower end of the vertical rod 91, and the other end is welded and fixed to the elastic clamp 93; the vertical rod 91 has a square cross section, is inserted into the guide hole 61 of the slide bar 6, and can slide down in the guide hole 61 in the vertical direction, so that the two L-shaped rib plate clamping rods 9 are respectively vertically connected to the outer ends of the two slide bars 6, and can adjust the height position on the slide bar 6. After the adjustment is completed, the M4 screw 10 is screwed into the adjustment screw hole 63 of the slide bar 6 for positioning.

[0053] See also Fig.17 The pipe rib installation method implemented by the auxiliary device includes the following steps:

[0054] 1) Install the base 1 on the flange C of the branch pipe B - fix the limit column 2 to the lower part of the T-block 3 through threads, and insert the two T-blocks 3 into the T-slots 12 on both sides of the base 1 respectively, and then directly put the limit column 2 into the connecting hole of the flange C, and place the base 1 on the upper plane of the flange C.

[0055] 2) Centering the position of the base 1 - adjust the position of the base 1 according to the scales 32 on the two T-blocks 3 so that the scales 32 on the two T-blocks 3 remain the same, so as to place the base 1 at the center of the flange C, and then tighten the M8 fixing bolts 4 to fix the position of the base 1 to prevent the base 1 from shifting.

[0056] 3) Install the rotating block 5, the two sliding rods 6 and the two L-shaped rib plate clamping rods 9 - insert the positioning shaft 13 through the positioning hole 51, thereby installing the rotating block 5 on the base 1, and at the same time, vertically insert the vertical rods 91 of the two L-shaped rib plate clamping rods into the guide holes 61 of the two sliding rods 6, and then insert the two sliding rods 6 into the square slide grooves 52 on both sides of the rotating block 5.

[0057] 4) Install the rib plate D - clamp the two rib plates D on the elastic clips 93 of the two L-shaped rib plate clamping rods 9 respectively, adjust the height of the L-shaped rib plate clamping rod 9 by lifting and lowering the vertical rod 91 in the guide hole 61, adjust the distance between the elastic clip 93 and the branch pipe B by sliding the slide bar 6 in the square slide groove 52, adjust the relative angle position of the elastic clip 93 and the flange C by rotating the rotating block 5 on the base 1, so as to adjust the rib plate D to the pre-installed position, and after the adjustment is completed, lock the position of the slide bar 6 by the M4 bolt 7 and nut 8, and lock the position of the L-shaped rib plate clamping rod 9 by the M4 screw 10, and finally perform the welding operation of the rib plate D.

[0058] The protection scope of the present invention is not limited to the above-mentioned embodiments, but should also include other obvious changes and substitutions for the present invention.

Claims

1. A method for installing a rib plate of a pipe fitting, wherein the pipe fitting refers to a main pipe and a branch pipe cross-connected to each other on a low-speed marine diesel engine, the branch pipe is provided with a flange, and the rib plate is connected between the main pipe and the branch pipe, characterized in that: The installation method is realized by an auxiliary device, which includes a base, two limit columns, two T-blocks, a rotating block, two sliding rods and two L-shaped rib plate clamping rods; the base includes a body and a positioning shaft, the lower side of the body is provided with a horizontally arranged T-slot that penetrates along the longitudinal direction, and the two side surfaces are provided with threaded holes connected to the T-slot, and the positioning shaft is vertically connected to the center of the upper side of the body; the two limit columns are respectively vertically connected to the outer sides of the two T-blocks and inserted into the connecting holes of the flange for positioning, and the two T-blocks are respectively inserted into the T-slot of the body from both ends and can slide in the T-slot, and are fixed by the threaded holes and fixing bolts after positioning. The two guide wheels are connected to the two ends of the rotating block and can slide longitudinally on the rotating block to adjust the radial position; the two L-shaped rib plate clamping rods are vertically connected to the outer ends of the two slide wheels and can slide vertically on the slide wheels to adjust the height position, the L-shaped rib plate clamping rod comprises a vertical rod, a horizontal rod and an elastic clip, the vertical rod is connected to the slide rod, the horizontal rod is horizontally arranged, one end is fixedly connected to the lower end of the vertical rod, and the other end is fixedly connected to the elastic clip, the elastic clip is used to clamp the rib plate; The installation method comprises the following steps: 1) Install the base on the flange of the branch pipe - fix the limit column to the lower part of the T-block, and insert the two T-blocks into the T-slots of the base respectively, then put the limit column into the connecting hole of the flange, and place the base on the upper plane of the flange; 2) Centering the base position - adjust the base position so that the scales on the two T-blocks remain the same, so that the base is placed in the center of the flange, and then fix the base position with fixing bolts; 3) Installing the rotating block, two sliding bars and two L-shaped rib plate clamping bars: installing the rotating block on the base through the positioning shaft, and vertically connecting the two L-shaped rib plate clamping bars to the two sliding bars respectively, and then connecting the two sliding bars to the two sides of the rotating block respectively; 4) Install the rib plate - clamp the two rib plates on the elastic clamps of the two L-shaped rib plate clamp rods respectively, adjust the height of the L-shaped rib plate clamp rod by lifting and lowering, adjust the distance between the elastic clamp and the branch pipe by sliding the slide rod, adjust the relative angle position of the elastic clamp and the flange by rotating the rotating block, so as to adjust the rib plate to the pre-installed position, then lock the position of the slide rod and the L-shaped rib plate clamp rod, and finally perform the welding operation of the rib plate.

2. The method for installing a pipe rib according to claim 1, characterized in that: The T-block is a rod with a T-shaped cross-section, a fixing screw hole connected to the limiting column is provided on one side of the bottom surface, and a scale is provided on the top surface for adjusting the center position of the base.

3. The method for installing a pipe rib according to claim 2, characterized in that: The limiting column is a stepped shaft, the large end of which is inserted into the connecting hole of the flange, and the small end of which is a stud connected to the T-block.

4. The method for installing a pipe rib according to claim 1, characterized in that: A positioning hole connected to the positioning axis of the base is provided in the center of the lower plane of the rotating block, and square slide grooves are symmetrically provided along the longitudinal direction on both sides of the upper plane. Long waist through grooves that pass through the square slide grooves transversely are provided on both side surfaces of the rotating block.

5. The method for installing a pipe rib according to claim 4, characterized in that: The sliding rod is a rod with a square cross-section, one side of which is provided with a horizontal fixing through hole, and the other side of which is provided with a vertical guide hole. The end of the sliding rod on the same side of the guide hole is provided with an adjusting screw hole that is transversely connected to the guide hole. The vertical rod of the L-shaped rib plate clamp rod is inserted into the guide hole and is positioned by a screw connected to the adjusting screw hole. The sliding rod is arranged in the square sliding groove of the rotating block and is positioned by bolts and nuts that pass through the fixing through hole and the long waist through groove of the rotating block.

6. The method for installing a pipe rib according to claim 5, characterized in that: The cross section of the vertical rod is square, and the guide hole is a square hole.

7. The method for installing a pipe rib according to claim 1, characterized in that: The rotating block can rotate 360 ​​degrees on the base.

8. The method for installing a pipe rib according to claim 1, characterized in that: The clamping opening of the elastic clamp is along the vertical direction.

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