Gas pipeline mounting auxiliary device for crossing complex terrains and use method

Abstract

The invention discloses a gas pipeline installation auxiliary device for crossing a complex terrain and a using method. The gas pipeline installation auxiliary device comprises a main guide rail and a frame. The main guide rail is provided with more than two slide blocks capable of reciprocating along the length direction; a hoop pipe structure is arranged below each sliding block and is used for hooping a pipe fitting needing to be mounted; the positions, corresponding to the two sides of the main guide rail, of the frame are provided with a plurality of pairs of height-adjustable supporting columns in the length direction of the main guide rail. In the use process, each pair of supporting columns with the adjustable height is adjusted in sequence according to encountered obstacles or pits, and the supporting columns cross the obstacles or the pits. The application of the invention can improve the efficiency of installing and transporting pipelines in complex terrains.

Description

Technical Field

[0001] The present invention relates to the technical field of gas pipeline installation, and in particular to a gas pipeline installation auxiliary device for crossing complex terrain and a use method thereof.

[0002] Background Field

[0003] At present, the laying of gas pipelines is gradually developing towards the west, with more and more long-distance pipelines. At the same time, due to the increasing terrain undulations, more gas stations and valve rooms are needed as hubs.

[0004] However, for the convenience of operation and maintenance, gas stations have a large number of buried pipelines and foundations. During construction, the transportation of prefabricated pipelines and pipe fittings is difficult due to the large production area, limited crane lifting distance, large pipeline diameter, and inconsistent ground elevations of pipe piers, equipment foundations, and trenches.

[0005] Moreover, some pipelines need to be laid at an angle, and it is impossible to transport pipe fittings and pipes solely by manpower, and to ensure that the pipe fittings do not move during welding.

[0006] How to improve the efficiency of installing transportation pipelines in complex terrain has become a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0007] In view of the above-mentioned defects of the prior art, the present invention provides an auxiliary device for installing a gas pipeline across complex terrain and a method for using the device, the purpose of which is to improve the efficiency of installing a transportation pipeline across complex terrain.

[0008] To achieve the above-mentioned object, the present invention discloses a gas pipeline installation auxiliary device for crossing complex terrain, comprising a main rail parallel to or at an acute angle to a horizontal plane, and a frame for setting the main rail;

[0009] The main guide rail is provided with two or more sliders capable of reciprocating along the length direction;

[0010] A hoop structure is provided under each of the slide blocks for hooping the pipe fittings to be installed;

[0011] The frame is provided with a plurality of pairs of height-adjustable support columns at positions corresponding to both sides of the main rail along the length direction of the main rail;

[0012] Each of the pipe clamping structures comprises two pipe clamping rods symmetrically arranged on both sides of the main rail;

[0013] Each of the clamping rods is arc-shaped, with the concave sides facing each other, one end of each of the clamping rods being connected to the corresponding slider in a swivel pair, and the swivel axis is parallel to the main guide rail, and a plurality of rollers are provided along the length direction, and the other end of each of the clamping rods is detachably fixed to another clamping rod belonging to the same clamping structure;

[0014] The rotation axis of each roller is parallel to the length direction of the main guide rail;

[0015] The lower end of each support column capable of adjusting the height is provided with a support roller with a self-locking function.

[0016] Preferably, the frame is rectangular, comprising two long sides of the same length as the main rail, and two short sides connecting the two ends of the two long sides;

[0017] The two ends of the main rail are respectively connected to the two short sides;

[0018] A sub-guide rail is provided between the main guide rail and each of the long sides;

[0019] Each of the sub-guide rails is provided with at least one sliding block capable of reciprocating along the length direction.

[0020] More preferably, the cross-section of the main guide rail and each of the sub-guide rails is in an "I" shape, the upper surface of each of the sliders is provided with a T-shaped slot penetrating through two side surfaces, and each of the T-shaped slots matches with the lower portion of the corresponding main guide rail or the corresponding sub-guide rail to form a moving pair;

[0021] Each slider is provided with a detachable fixing pin at the vertical plate position of the main rail or the sub-rail in the shape of an "I" character; the main rail and the sub-rail are provided with a plurality of guide rail limiting holes corresponding to the tracks of the corresponding fixing pins during the movement of the corresponding slider.

[0022] More preferably, a chain is provided between each of the clamping rods and the corresponding slider, and the rotary axis of each rotary pair on the chain is parallel to the length direction of the corresponding main rail or the corresponding sub-rail;

[0023] One end of the two clamping rods of each of the clamping tube structures that are detachably fixed is provided with a hook, and the two clamping rods are detachably fixed by tying steel wire ropes to the corresponding two hooks.

[0024] More preferably, each of the height-adjustable support columns comprises a tubular fixed support column, and a variable support column sleeved in the fixed support column and capable of reciprocating along the vertical direction of the frame;

[0025] Each of the variable support columns includes a plurality of unit columns connected in sequence along the length direction, and a damping block is provided at the upper end of the inner cavity of the corresponding fixed support column;

[0026] Open holes are formed in the side walls of each of the fixed support columns, and a pair of wrenches with eccentric wheels are symmetrically provided according to the corresponding damping blocks;

[0027] Each pair of wrenches is connected to the corresponding fixed support column by a revolute pair, and the damping block is clamped by the corresponding eccentric wheel to form a limit.

[0028] Support column height limit holes are provided at the handle positions of each pair of wrenches on the corresponding fixed support columns;

[0029] A limiting rod in a "冂" shape is provided in each of the two support column height limit holes of each pair of wrenches.

[0030] More preferably, each of the bracket rollers with a self-locking function includes a card slot and a roller.

[0031] The present invention also provides a method for using the above-mentioned gas pipeline installation auxiliary device for crossing complex terrains to transport pipe fittings to be connected to an existing gas pipeline, and the specific steps are as follows:

[0032] Step 1: Adjust the heights of all the support columns that can be adjusted in height to meet the requirements;

[0033] Step 2: Move the installation auxiliary device to the position of the pipe fitting to be transported, and move the position of the slider corresponding to the pipe fitting so that each straight pipe section of the pipe fitting includes at least two pipe hoop structures. Then, open the two pipe clamping rods of each pipe hoop structure corresponding to the pipe fitting and hoop all the straight pipe sections of the pipe fitting between the two pipe clamping rods of the corresponding pipe hoop structure, so that the corresponding pipe fitting is suspended below the frame;

[0034] Step 3: Move the installation auxiliary device along the length direction of the main guide rail to an obstacle that can only be passed from above, or a concave pit with a depression;

[0035] Step 4: Adjust the pair of support columns that can be adjusted in height closest to the obstacle or the concave pit to the shortest state and then continue to move forward. And each time a pair of support columns that can be adjusted in height approaches the edge of the obstacle or the concave pit, adjust them to the shortest state until the pair of support columns at the frontmost move forward to the range of the highest point of the obstacle or the deepest point of the concave pit;

[0036] Step 5, adjusting the front pair of adjustable height support columns until the corresponding support rollers touch the highest point of the obstacle or the deepest range of the pit and then continue to move forward, and after each pair of adjustable height support columns moves forward to the highest point of the obstacle or the deepest range of the pit, the height is adjusted to the range where the corresponding support rollers touch the highest point of the obstacle or the deepest range of the pit, until the front pair of adjustable height support columns moves forward to cross the obstacle or the pit;

[0037] Step 6: Adjust the front pair of height-adjustable support columns until the corresponding support rollers are at ground height and then continue to move forward, and after each pair of height-adjustable support columns advances to cross the obstacle or the pit, adjust the height to the corresponding support rollers at ground height and then continue to move forward;

[0038] Step 7: After the pipe fitting is transported to the point where it is connected to the existing gas pipeline, welding is performed.

[0039] Preferably, the pipe fitting is a tee, a straight pipe, an angled pipe and / or an elbow.

[0040] Preferably, in step 1, a plurality of the unit columns are first connected in sequence to form all the variable support columns, and then a corresponding bracket roller is arranged at the lower end of each of the variable support columns;

[0041] After completing the installation of the bracket rollers of all the variable support columns, install the corresponding damping blocks into the corresponding fixed support columns, and tighten the corresponding wrenches to clamp the corresponding damping blocks;

[0042] After the height adjustment of the frame is completed, a limiting rod is arranged at the two supporting column height limiting holes of the two wrenches of each of the fixed supporting columns.

[0043] Preferably, after completing step 2, the fixing pin of each slider is inserted into the guide rail limiting hole of the corresponding main rail or the corresponding sub-guide rail for limiting.

[0044] Beneficial effects of the present invention:

[0045] The application of the present invention can improve the efficiency of installing transportation pipelines in complex terrain.

[0046] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 A schematic structural diagram of an embodiment of the present invention is shown.

[0048] Figure 2 A schematic diagram of a ferrule tee pipe in one embodiment of the present invention is shown.

[0049] Figure 3 A schematic diagram showing an embodiment of the present invention is shown.

[0050] Figure 4 A schematic diagram showing a hoop tube structure in an embodiment of the present invention is shown.

[0051] Figure 5 A schematic diagram showing a main rail or a sub-rail provided with a rail limiting hole in one embodiment of the present invention is shown.

[0052] Figure 6 Showing the present invention Figure 3 A is a partial enlarged schematic diagram.

[0053] Figure 7 A schematic structural diagram of any support column capable of adjusting height in an embodiment of the present invention is shown.

[0054] Figure 8 A schematic structural diagram of a damping block in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0055] Example 1

[0056] like Figures 1 to 5 As shown, the auxiliary device for installing a gas pipeline across complex terrain includes a main rail 1 parallel to or at an acute angle to a horizontal plane, and a frame 2 for setting the main rail 1;

[0057] The main guide rail 1 is provided with two or more sliders 3 that can reciprocate along the length direction;

[0058] A hoop structure 4 is provided under each slider 3 for hooping a pipe fitting 5 to be installed;

[0059] The frame 2 is provided with a plurality of pairs of height-adjustable support columns 6 at positions corresponding to both sides of the main rail 1 along the length direction of the main rail 1;

[0060] Each tube clamping structure 4 includes two tube clamping rods 41 symmetrically arranged on both sides of the main rail 1;

[0061] Each clamping rod 41 is arc-shaped, and the concave sides are arranged facing each other. One end is connected to the corresponding slider 3 in a swivel pair, and the swivel axis is parallel to the main rail 1. A plurality of rollers 411 are arranged along the length direction, and the other end is fixed to another clamping rod 41 belonging to the same clamping structure 4 in a detachable manner.

[0062] Each pipe clamping rod 41 is provided with a plurality of rollers 411 along the length direction to rotate the pipe fitting 5 to meet the welding requirements.

[0063] The rotation axis of each roller 411 is parallel to the length direction of the main guide rail 1;

[0064] The lower end of each height-adjustable support column 6 is provided with a support roller 67 with a self-locking function.

[0065] In some embodiments, the frame 2 is rectangular, including two long sides 21 having the same length as the main rail 1 , and two short sides 22 connecting two ends of the two long sides 21 ;

[0066] Both ends of the main rail 1 are connected to the two short sides 22 respectively;

[0067] A sub-guide rail 11 is provided between the main guide rail 1 and each long side 21;

[0068] Each sub-guide rail 11 is provided with one or more sliders 3 capable of reciprocating along the length direction.

[0069] In some embodiments, the cross-section of the main rail 1 and each sub-rail 11 is in the shape of an I, and the upper surface of each slider 3 is provided with a T-shaped slot penetrating through the two side surfaces, and each T-shaped slot is matched with the lower part of the corresponding main rail 1 or the corresponding sub-rail 11 to form a moving pair;

[0070] Each slider 3 is provided with a detachable fixing pin 31 at the vertical plate position of the main rail 1 or the sub-guide rail 11 in the shape of an "I"; the main rail 1 and the sub-guide rail 11 are provided with a plurality of guide rail limiting holes 12 corresponding to the trajectory of the corresponding fixing pin 31 during the movement of the corresponding slider 3.

[0071] In some embodiments, a chain 42 is provided between each clamping rod 41 and the corresponding slider 3, and the rotary axis of each rotary pair on the chain 42 is parallel to the length direction of the corresponding main rail 1 or the corresponding sub-rail 11;

[0072] One end of the two clamping rods 41 of each clamping structure 4 that are detachably fixed is provided with a hook 412 , and the two ends are detachably fixed by tying steel wire ropes 43 to the corresponding two hooks 412 .

[0073] like Figure 6 system Figure 8 As shown, in some embodiments, each height-adjustable support column 6 includes a tubular fixed support column 61, and a variable support column 62 which is sleeved in the fixed support column 61 and can reciprocate along the vertical direction of the frame 2;

[0074] Each variable support column 62 includes a plurality of unit columns connected in sequence along the length direction, and a damping block 63 is provided at the upper end of the inner cavity of the corresponding fixed support column 61;

[0075] The variable support column 62 formed by sequentially connecting multiple unit columns can be applicable to different length requirements.

[0076] On the side wall of each fixed support column 61, holes are opened, and a pair of wrenches 65 with eccentric wheels 64 are symmetrically arranged according to the corresponding damping blocks 63;

[0077] Each pair of wrenches 65 is connected to the corresponding fixed support column 61 by a revolute pair, and each pair clamps the damping block 63 through the corresponding eccentric wheel 64 to form a limit.

[0078] At the handle position of the corresponding fixed support column 61 where each pair of wrenches 65 is located, there are support column height limit holes 611;

[0079] For each pair of wrenches 65, a "冂"-shaped limit rod 66 is provided in each of the two support column height limit holes 611.

[0080] In some embodiments, each bracket roller 67 with a self-locking function includes a card slot and a roller.

[0081] The present invention also provides a usage method. Use the gas pipeline installation auxiliary device for crossing complex terrains as described above to transport pipe fittings to be connected to an existing gas pipeline. The specific steps are as follows:

[0082] Step 1: Adjust the height of all support columns 6 that can be adjusted in height to meet the requirements;

[0083] Step 2: Move the installation auxiliary device to the position of the pipe fitting 5 to be transported. Correspondingly, move the position of the slider 3 to each straight pipe section of the pipe fitting 5 so that each straight pipe section includes at least two pipe-clamping structures 4. Then, open the two pipe-clamping rods 41 of each pipe-clamping structure 4 corresponding to the pipe fitting, and hoop all the straight pipe sections of the pipe fitting between the two pipe-clamping rods 41 of the corresponding pipe-clamping structure 4, so that the corresponding pipe fitting is suspended below the frame 2;

[0084] Step 3: Move the installation auxiliary device along the length direction of the main guide rail 1 to an obstacle that can only be passed from above, or to a concave pit with a depression;

[0085] Step 4: Adjust the pair of support columns 6 that can be adjusted in height closest to the obstacle or the concave pit to the shortest state and then continue to move forward. And every time a pair of support columns 6 that can be adjusted in height approaches the edge of the obstacle or the concave pit, adjust it to the shortest state until the pair of support columns 6 at the frontmost position advances to the range of the highest point of the obstacle or the deepest point of the concave pit;

[0086] Step 5: Adjust the front pair of height-adjustable support columns 6 until the corresponding support rollers 67 touch the highest point of the obstacle or the deepest part of the pit, and then continue to move forward. After each pair of height-adjustable support columns 6 moves forward to the highest point of the obstacle or the deepest part of the pit, adjust the height to the corresponding support rollers 67 to touch the highest point of the obstacle or the deepest part of the pit, until the front pair of height-adjustable support columns 6 moves forward to cross the obstacle or the pit;

[0087] Step 6: Adjust the front pair of height-adjustable support columns 6 until the corresponding support rollers 67 are at ground height and then continue to move forward. After each pair of height-adjustable support columns 6 moves forward to cross an obstacle or pit, adjust the height until the corresponding support rollers 67 are at ground height and then continue to move forward.

[0088] Step 7: After the pipe fittings are transported to the existing gas pipeline, welding is performed.

[0089] In some embodiments, the pipe 5 is a tee pipe, a straight pipe, an angled pipe and / or an elbow.

[0090] In some embodiments, in step 1, a plurality of unit columns are first connected in sequence to form all variable support columns 62, and then a corresponding support roller 67 is arranged at the lower end of each variable support column 62;

[0091] After the bracket rollers 67 of all variable support columns 62 are installed, the corresponding damping blocks 63 are installed into the corresponding fixed support columns 61, and the corresponding wrenches 65 are pressed to clamp the corresponding damping blocks 63;

[0092] After the height adjustment of the frame 2 is completed, a limiting rod 66 is provided in the two supporting column height limiting holes 611 of the two wrenches 65 of each fixed supporting column 61 .

[0093] In some embodiments, after completing step 2, the fixing pin 31 of each slider 3 is inserted into the guide rail limiting hole 12 of the corresponding main guide rail 1 or the corresponding sub-guide rail 11 for limiting.

[0094] Example 2

[0095] Prefabricate tees and short pipes and move them to designated pipe locations for subsequent pipe connection.

[0096] 1. Connect the unit columns of the variable support column 62 in sequence and then connect them to the bracket roller 67 to make a support column 6 with adjustable height. Make 6 in sequence.

[0097] 2. Insert the height-adjustable support columns 6 into the fixed support columns 61 in sequence, and slowly lift the frame 2 to the required height.

[0098] 3. Rotate the wrenches 65 on both sides of one of the height-adjustable support columns 6 downward until the damping block 63 is clamped and cannot rotate.

[0099] 4. Insert the limiting rods 66 into the height limiting holes 611 of the support columns of the two wrenches 65 to fix them, so as to prevent the wrenches 65 from accidentally sliding.

[0100] 5. Repeat steps 3 and 4 until all the height-adjustable support columns 6 are installed in place.

[0101] 6. Move the installation auxiliary device to the top of the tee to be welded, and lock the bracket roller 67 to prevent sliding.

[0102] 7. Slide the slider 3 to the vicinity of the three top ends of the tee.

[0103] 8. Untie one side of the wire rope 43 and pass it through the bottom of one end of the tee.

[0104] 9. After the steel wire rope 43 passes through the bottom, it is fixed to the hook 412 on the other side.

[0105] 10. Fix the chain 42 to the bottom of the slider 3.

[0106] 11. Repeat steps 8-10 and hang the three endpoints of the tee on the bottom of the corresponding slider 3.

[0107] 12. Adjust the position of the slider 3 and the length of the chain 42 to make the tee horizontal, insert the fixing pin 31 into the guide rail limiting hole 12, and fix the slider 3.

[0108] 13. Move the installation auxiliary device over the short pipe to be welded.

[0109] 14. Untie one side of the wire rope 43 and pass it through the bottom of one end of the short tube.

[0110] 15. After the wire rope 43 passes through the bottom, it is fixed on the hook 412 on the other right side.

[0111] 16. Fix the chain 42 to the bottom of the slider 3.

[0112] 17. Repeat steps 14-16 and hang both ends of the short tube at the bottom of the corresponding slider 3.

[0113] 18. Adjust the position of the slider 3 and the length of the chain 42 to make the tee horizontal, insert the fixing pin 31 into the guide rail limiting hole 12, and fix the slider 3.

[0114] 19. Unlock all the bracket rollers 67 and move the installation auxiliary device to a higher obstacle. The obstacle cannot be passed under and can only be passed from above.

[0115] 20. Remove the limit rod 66 of the height-adjustable support column 6 closest to the obstacle, loosen the wrench 65, lift the height-adjustable support column 6 until the pipe and the tee are higher than the highest point of the obstacle, and tighten the wrench 65.

[0116] 21. Push the installation auxiliary device forward to move 20 steps so that the height-adjustable support column 6 can pass over the obstacle.

[0117] 22. Loosen the wrench 65 of the height-adjustable support column 6 that passes over the obstacle, lower the height-adjustable support column 6 to a suitable height, tighten the wrench 65, and install the limit rod 66.

[0118] 23. Push the installation auxiliary device again, and repeat 20-22 until the installation auxiliary device passes over the obstacle and reaches the designated installation position, and all the bracket rollers 67 are locked.

[0119] 24. Adjust the height of the six adjustable support columns 6 of the auxiliary installation device up and down to make the auxiliary installation device in a horizontal state.

[0120] 25. Loosen the fixing pin 31 corresponding to the short pipe, adjust the position of the slider 3 and the length of the chain 42 of the installation auxiliary device corresponding to the short pipe, so that the short pipe is horizontal and in line with the existing pipeline, the cross-sections of the two are parallel at the junction, and the spacing meets the welding requirements, and insert the fixing pin 31.

[0121] 26. Loosen the fixing pin 31 corresponding to the tee, adjust the position of the slider 3 and the length of the chain 42 at the tee, so that the cross-sections of the two joints are parallel, the spacing meets the welding requirements, and the tee is in a horizontal position, and insert the fixing pin 31.

[0122] 27. Rotate the short pipe so that the transverse weld of the short pipe itself is staggered with the transverse weld of the existing pipeline itself and the transverse weld of the elbow itself.

[0123] 28. Weld the interface.

[0124] 29. Untie all chains on short pipes and tees 42.

[0125] 30. Push the installation aid away.

[0126] 31. Repeat 20-22 until all the auxiliary devices are installed out of the obstacle range.

[0127] Example 3

[0128] Angled pipe and elbow installation

[0129] 1. Connect the unit columns of the variable support column 62 in sequence and then connect them to the bracket roller 67 to make a support column 6 with adjustable height. Make 6 in sequence.

[0130] 2. Insert the height-adjustable support columns 6 into the fixed support columns 61 in sequence, and slowly lift the frame 2 to the required height.

[0131] 3. Rotate the wrenches 65 on both sides of one of the height-adjustable support columns 6 downward until the damping block 63 is clamped and cannot rotate.

[0132] 4. Insert the limiting rods 66 into the height limiting holes 611 of the support columns of the two wrenches 65 to fix them, so as to prevent the wrenches 65 from accidentally sliding.

[0133] 5. Repeat steps 3 and 4 until all the height-adjustable support columns 6 are installed in place.

[0134] 6. Move the installation auxiliary device to the top of the elbow to be welded, and lock the bracket roller 67 to prevent sliding.

[0135] 7. Slide the slider 3 to the vicinity of the three top ends of the elbow.

[0136] 8. Untie one side of the wire rope 43 and pass it through the bottom of one end of the elbow.

[0137] 9. After the steel wire rope 43 passes through the bottom, it is fixed to the hook 412 on the other side.

[0138] 10. Fix the chain 42 to the bottom of the slider 3.

[0139] 11. Repeat steps 8-10 and hang the three endpoints of the elbow at the bottom of the corresponding slider 3.

[0140] 12. Adjust the position of the slider 3 and the length of the chain 42 to make the elbow horizontal, insert the fixing pin 31 into the guide rail limiting hole 12, and fix the slider 3.

[0141] 13. Move the installation auxiliary device over the angled pipe to be welded.

[0142] 14. Untie one side of the wire rope 43 and pass it through the bottom of one end of the angled pipe.

[0143] 15. After the wire rope 43 passes through the bottom, it is fixed on the hook 412 on the other right side.

[0144] 16. Fix the chain 42 to the bottom of the slider 3.

[0145] 17. Repeat steps 14-16 and hang both ends of the angled pipe on the bottom of the corresponding slider 3.

[0146] 18. Adjust the position of the slider 3 and the length of the chain 42 so that the angled pipe is horizontal and in the same straight line as the elbow, insert the fixing pin 31 into the guide rail limiting hole 12, and fix the slider 3.

[0147] 19. Unlock all the bracket rollers 67 from the locked state, and move the installation auxiliary device to the obstacle, which is a large pit.

[0148] 20. Remove the limit rod 66 of the height-adjustable support column 6 closest to the obstacle, loosen the wrench 65, lift the height-adjustable support column 6 and suspend it in the air, and tighten the wrench 65.

[0149] 21. Push the installation auxiliary device until the height-adjustable support column 6 in the previous step reaches the bottom of the obstacle pit, loosen the wrench 65, and lower the height-adjustable support column 6 to the lowest point. If the distance is not enough, continue to connect the "variable length bracket rod" to the top of the height-adjustable support column 6, and tighten the wrench 65 when it reaches the lowest point.

[0150] 22. Push the installation auxiliary device forward until the second height-adjustable support column 6 is close to the obstacle.

[0151] 23. Push the installation auxiliary device again, and repeat 20-22 until the installation auxiliary device passes over the obstacle and reaches the designated installation position, and all the bracket rollers 67 are locked.

[0152] 24. The installation auxiliary device is placed in an externally horizontal state by adjusting the height of the six height-adjustable support columns 6 of the installation auxiliary device up and down.

[0153] 25. Loosen the fixing pin 31 corresponding to the short pipe, adjust the position of the slider 3 of the installation auxiliary device short pipe and the length of the chain 42, so that the pipeline reaches the specified inclination angle and is in a straight line with the existing pipeline, the cross-sections of the two are parallel at the junction, and the spacing meets the welding requirements, and insert the fixing pin 31.

[0154] 26. Loosen the fixing pin 31 corresponding to the elbow, adjust the position of the slider 3 near the short pipe of the elbow and the length of the chain 42 so that the cross-sections of the two joints are parallel and the spacing meets the welding requirements, and insert the fixing pin 31.

[0155] 27. Rotate the short pipe so that the transverse weld of the short pipe itself is staggered with the transverse weld of the existing pipeline itself and the transverse weld of the elbow itself.

[0156] 28. Weld the interface.

[0157] 29. Disconnect all chains 42 on the short pipes and elbows.

[0158] 30. Push the installation aid away.

[0159] 31. Repeat 20-22 until all the auxiliary devices are installed out of the obstacle range.

[0160] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. Auxiliary device for gas pipeline installation across complex terrain; characterized by: It comprises a main rail (1) which is parallel to a horizontal plane or forms an acute angle with the horizontal plane, and a frame (2) for setting the main rail (1); The main guide rail (1) is provided with two or more sliding blocks (3) capable of reciprocating along the length direction; A pipe clamp structure (4) is provided below each of the slide blocks (3) for clamping a pipe fitting (5) to be installed; The frame (2) is provided with a plurality of pairs of support columns (6) capable of adjusting heights at positions corresponding to both sides of the main rail (1) along the length direction of the main rail (1); Each of the pipe clamping structures (4) comprises two pipe clamping rods (41) symmetrically arranged on both sides of the main rail (1); Each of the tube clamping rods (41) is arc-shaped, with the concave sides facing each other, one end of each of the tube clamping rods (41) being connected to the corresponding slider (3) in a swivel pair, and the swivel axis is parallel to the main guide rail (1), and a plurality of rollers (411) are provided along the length direction, and the other end of each of the tube clamping rods (41) belonging to the same tube clamping structure (4) is detachably fixed; The rotation axis of each roller (411) is parallel to the length direction of the main guide rail (1); The lower end of each height-adjustable support column (6) is provided with a support roller (67) with a self-locking function.

2. The auxiliary device for installing a gas pipeline across complex terrain according to claim 1, characterized in that: The frame (2) is rectangular, and comprises two long sides (21) of the same length as the main rail (1), and two short sides (22) connecting the two ends of the two long sides (21); The two ends of the main rail (1) are respectively connected to the two short sides (22); A sub-guide rail (11) is provided between the main guide rail (1) and each of the long sides (21); Each of the sub-guide rails (11) is provided with one or more sliding blocks (3) capable of reciprocating along the length direction.

3. The auxiliary device for installing a gas pipeline across complex terrain according to claim 2 is characterized in that: The cross-section of the main guide rail (1) and each of the sub-guide rails (11) is in the shape of an I, and the upper surface of each of the sliders (3) is provided with a T-shaped slot penetrating through two side surfaces, and each of the T-shaped slots matches with the lower portion of the corresponding main guide rail (1) or the corresponding sub-guide rail (11) to form a moving pair; Each of the sliders (3) is provided with a detachable fixing pin (31) at a position of a vertical plate of the main guide rail (1) or the sub-guide rail (11) in the shape of an "I" character; the main guide rail (1) and the sub-guide rail (11) are provided with a plurality of guide rail limiting holes (12) corresponding to the tracks of the fixing pins (31) during the movement of the sliders (3).

4. The auxiliary device for installing a gas pipeline across complex terrain according to claim 2, characterized in that: A chain (42) is provided between each of the pipe clamping rods (41) and the corresponding slider (3), and the rotary axis of each rotary pair on the chain (42) is parallel to the length direction of the corresponding main guide rail (1) or the corresponding sub-guide rail (11); One end of the two clamping rods (41) of each of the clamping tube structures (4) that are detachably fixed is provided with a hook (412), and the two ends are detachably fixed by tying steel wire ropes (43) to the corresponding two hooks (412).

5. The auxiliary device for installing a gas pipeline across complex terrain according to claim 1, characterized in that: Each of the height-adjustable support columns (6) includes a tubular fixed support column (61) and a variable support column (62) sleeved in the fixed support column (61) and capable of reciprocating in the vertical direction of the frame (2); Each of the variable support columns (62) includes multiple unit columns connected in sequence along the length direction, and a damping block (63) is provided at the upper end of the inner cavity of the corresponding fixed support column (61); Openings are formed on the side walls of each of the fixed support columns (61), and a pair of wrenches (65) with eccentric wheels (64) are symmetrically provided according to the corresponding damping blocks (63); Each pair of wrenches (65) is rotatably connected to the corresponding fixed support column (61), and the damping block (63) is clamped by the corresponding eccentric wheel (64) to form a limit. Support column height limit holes (611) are provided at the handle positions of each pair of wrenches (65) corresponding to the fixed support columns (61); A "冂"-shaped limit rod (66) is provided in each of the two support column height limit holes (611) of each pair of wrenches (65).

6. The auxiliary device for installing a gas pipeline across complex terrain according to claim 1, characterized in that: Each of the bracket rollers (67) with a self-locking function includes a card slot and a roller.

7. A method of use, characterized in that: Using the gas pipeline installation auxiliary device for crossing complex terrains as described in any one of claims 1 to 6 to transport the pipe fitting (5) to be connected to the existing gas pipeline, the specific steps are as follows: Step 1: Adjust the heights of all the height-adjustable support columns (6) to meet the requirements; Step 2: Move the installation auxiliary device to the position of the pipe fitting (5) to be transported, move the position of the slider (3) corresponding to the pipe fitting (5) so that each straight pipe section of the pipe fitting (5) includes at least two pipe hoop structures (4), and then open the two pipe clamping rods (41) of each pipe hoop structure (4) corresponding to the pipe fitting to hoop all the straight pipe sections on the pipe fitting between the two pipe clamping rods (41) of the corresponding pipe hoop structure (4), so that the corresponding pipe fitting is suspended below the frame (2); Step 3: Move the installation auxiliary device along the length direction of the main guide rail (1) to an obstacle that can only be passed from above or a concave pit with a depression; Step 4: Adjust the pair of height-adjustable support columns (6) closest to the obstacle or the concave pit to the shortest state and then continue to move forward, and each time a pair of height-adjustable support columns (6) approaches the edge of the obstacle or the concave pit, adjust it to the shortest state until the pair of height-adjustable support columns (6) at the front advances to the range of the highest point of the obstacle or the deepest point of the concave pit; Step 5, adjusting the front pair of support columns (6) capable of adjusting height until the corresponding support rollers (67) contact the highest point of the obstacle or the deepest part of the pit and then continue to move forward, and after each pair of support columns (6) capable of adjusting height moves forward to the highest point of the obstacle or the deepest part of the pit, the height is adjusted to the corresponding support rollers (67) contact the highest point of the obstacle or the deepest part of the pit, until the front pair of support columns (6) capable of adjusting height moves forward to cross the obstacle or the pit; Step 6: Adjust the front pair of height-adjustable support columns (6) until the corresponding support rollers (67) are at ground height and then continue to move forward, and after each pair of height-adjustable support columns (6) moves forward to cross the obstacle or the pit, adjust the height to the corresponding support rollers (67) at ground height and then continue to move forward; Step 7: After the pipe fitting is transported to the point where it is connected to the existing gas pipeline, welding is performed.

8. The method of use according to claim 7, characterized in that: The pipe fittings (5) are tee pipes, straight pipes, angled pipes and / or elbows.

9. The method of use according to claim 7, characterized in that: In step 1, a plurality of the unit columns are sequentially connected to form all the variable support columns (62), and then a corresponding support roller (67) is arranged at the lower end of each of the variable support columns (62); After the bracket rollers (67) of all the variable support columns (62) are installed, the corresponding damping blocks (63) are installed into the corresponding fixed support columns (61), and the corresponding wrenches (65) are pressed to clamp the corresponding damping blocks (63); After the height adjustment of the frame (2) is completed, a limiting rod (66) is provided in the two supporting column height limiting holes (611) of the two wrenches (65) of each of the fixed supporting columns (61).

10. The method of use according to claim 7, characterized in that: After completing step 2, the fixing pin (31) of each slider (3) is inserted into the guide rail limiting hole (12) of the corresponding main guide rail (1) or the corresponding sub-guide rail (11) to limit the position.

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