A convenient pipeline trench support system and construction method

Abstract

The present application discloses a convenient support system and construction method for a pipe network trench, and relates to the technical field of pipe network trench construction, including a purlin, a telescopic rod, a suspension part, and a second driving source. The purlin is arranged in pairs in the trench; the telescopic rod is located between a pair of purlins, and both ends are detachably connected to the purlins, and the telescopic rod is provided with a first driving source; the suspension part is detachably provided with a plurality of opposite side walls of the trench, and a winding roller is rotatably connected to the suspension part, and a lifting rope is wound around the winding roller, and the lifting rope is used to be connected to the top surface of the purlin to lift the purlin; a locking member for locking the winding roller is provided on the suspension part; the second driving source is located outside the trench, and the suspension part includes a driving part, and the output shaft of the driving source is used to be detachably connected to the driving part to drive the winding roller to rotate. The present application has the effect of being able to provide a support method with high construction efficiency and strong turnover, so as to carry out the construction of the pipeline trench.

Description

Technical Field

[0001] The present application relates to the technical field of pipe network trench construction, and in particular to a convenient pipe network trench support system and a construction method. Background Art

[0002] At present, with the continuous acceleration of my country's urbanization process, there are more and more new construction and renovation of pipeline projects, which often require pipeline engineering construction, such as digging pipeline trenches on site and renovating or laying related pipelines.

[0003] The characteristics of pipeline projects are that they are located in downtown areas, the foundation pit is narrow and shallow, and the existing traditional support methods mostly use steel supports. This support system requires on-site cutting and welding of steel pipe supports, which is cumbersome to construct and has poor turnover. The central purlin needs to be supported by corbels, and the welding of corbels requires a lot of auxiliary materials and manpower, and the welding speed is slow. Summary of the invention

[0004] In order to provide a support method with high construction efficiency and strong turnover for the construction of pipeline trenches, the present application provides a convenient support system and construction method for pipeline trenches.

[0005] In the first aspect, the present application provides a convenient pipe network trench support system, which adopts the following technical solutions:

[0006] A convenient pipe network trench support system, comprising:

[0007] A purlin, wherein the purlin is arranged in pairs in the groove, and a pair of purlins are respectively used to press against opposite side walls of the groove, and the length direction of the purlin is parallel to the length direction of the groove;

[0008] A telescopic rod, the telescopic rod is located between a pair of purlins, and both ends of the telescopic rod are detachably connected to the purlins, and the telescopic rod is provided with a first driving source for driving the telescopic rod to extend and retract;

[0009] A hanging part, wherein a plurality of hanging parts are detachably provided on opposite side walls of the groove, a winding roller is rotatably connected to the hanging part, a lifting rope is wound around the winding roller, and the lifting rope is used to be connected to the top surface of the surrounding purlin to lift the surrounding purlin, and a locking member for locking the winding roller is provided on the hanging part;

[0010] A second driving source, wherein the second driving source is located outside the groove, the suspension portion comprises a driving portion located outside the groove, and the output shaft of the driving source is used to be detachably connected to the driving portion to drive the winding roller to rotate.

[0011] By adopting the above technical solution, a pair of purlins can be driven by the telescopic rod to press against the inner walls opposite to the groove, thereby achieving a supporting effect on the inner wall of the groove; when in use, it is only necessary to place the purlin and the hanging part connected to the purlin in the groove, and fix the position of the hanging part, and after driving the second driving source to adjust the purlin to rise to the specified position, the pair of purlins can be pressed against the inner wall of the groove through the telescopic rod, which is easy to operate; and after the installation is completed, the second driving source can be removed. During disassembly, after the telescopic rod and the hanging part are retracted and removed, the various structures can be disassembled and transferred for installation or recycling in other locations, thereby improving construction efficiency and making turnover stronger.

[0012] Optionally, the pulling rope includes a vertical straight section and an inclined diagonal section, and the planes where the straight section and the diagonal section are located are perpendicular to the length direction of the surrounding purlin. When the surrounding purlin is suspended in the air, the straight section and the diagonal section are both in a stretched state.

[0013] By adopting the above technical solution, the pulling rope includes two sections and is arranged in a direction perpendicular to the length of the purlin, so that the pulling rope has a better lifting effect on the purlin, and when the winding roller rotates, both the straight section and the inclined section can be in a straight state, which is convenient for lifting and lowering and can maintain the stability of the purlin.

[0014] Optionally, at least two groups of guide structures are provided on the purlin, and the guide structures include a first wheel seat and a second wheel seat fixed on the purlin, and guide wheels are rotatably connected in the first wheel seat and the second wheel seat, and the axes of the two guide wheels and the winding roller are parallel to the length direction of the purlin, and the pulling rope passes around the two guide wheels at the same time, and one end is fixed to the winding roller, and the other end is fixed to the hanging part.

[0015] By adopting the above technical solution, at least two groups of guide structures are set up, so that at least four positions can provide support for the purlin through the lifting rope, thereby making the purlin more stable, and guiding and supporting by means of guide wheels, so that during the winding process of the winding roller, the lifting rope can automatically move and adjust while being in a straight state, thereby maintaining the movement stability of the purlin.

[0016] Optionally, the driving part includes a rotating rod located outside the groove and capable of rotating, the length direction of the rotating rod is horizontal and perpendicular to the length direction of the purlin, one end of the rotating rod is coaxially and detachably connected to the output shaft of the second driving source, and the rotating rod can drive the winding roller to rotate when it rotates.

[0017] By adopting the above technical solution, the second driving source is arranged outside the groove for easy use and disassembly. When the output shaft of the second driving source is connected to the rotating rod, the second driving source can drive the rotating rod to rotate. After the rotating rod rotates, it can further drive the winding roller to rotate, thereby realizing the winding and release of the pulling rope.

[0018] Optionally, the driving unit includes a linkage rod whose axis is perpendicular to the length direction of the purlin and the length direction of the rotating rod. One end of the linkage rod and the rotating rod are driven by a bevel gear set, and the other end of the linkage rod and the winding roller are also driven by a bevel gear set.

[0019] By adopting the above technical solution, when the rotating rod is driven to rotate by the second driving source, it can drive the linkage rod to rotate through the bevel gear set, and when the linkage rod rotates, it can also drive the winding roller to rotate through the bevel gear set, thereby achieving a transmission effect.

[0020] Optionally, the locking member includes a clamping block slidably disposed on the driving portion, the driving portion is provided with a third driving source for driving the clamping block to move, and the clamping block is used to clamp the rotating rod or the linkage rod or the winding roller.

[0021] By adopting the above technical solution, the third driving source drives the clamping block to move and clamp the rotating rod or the linkage rod or the winding roller. At this time, the position of the winding roller is fixed, so that the purlin is at a suitable height position, which is convenient for disassembly of the second driving source and operation of the telescopic rod.

[0022] Optionally, the purlin includes a main body portion, and a mounting portion slidably connected to the main body portion, the mounting portion slides in a direction of the length of the telescopic rod, and both ends of the telescopic rod are detachably connected to a mounting portion respectively.

[0023] By adopting the above technical solution, the telescopic rod and the mounting portion are detachably connected, so that when dismantling is required, the telescopic rod can be moved in advance so that the surrounding purlin no longer presses against the inner wall of the groove, thereby facilitating the dismantling work.

[0024] Optionally, a side wall of the main body close to the telescopic rod is provided with a sliding groove for the mounting part to slide, and the mounting part includes a mounting plate connected to the end of the telescopic rod, and the mounting plate can be moved to abut against the surface of the main body close to the telescopic rod.

[0025] By adopting the above technical solution, the installation part can move in the slide groove. By providing the installation plate, when the telescopic rod pushes the installation plate to move against the surface of the surrounding purlin, the surrounding purlin can be driven to further press against the inner wall of the groove.

[0026] In a second aspect, the present application provides a construction method of a pipe network trench portable support system, which is used to construct any of the above-mentioned pipe network trench portable support systems, and adopts the following technical solutions:

[0027] A construction method for a pipe network trench convenient support system comprises the following steps:

[0028] S1. Place the purlins in pairs in the groove, and connect the hanging part with the inner wall of the groove;

[0029] S2, connecting the output shaft of the second driving source to the rotating rod of the suspension part, so that the winding roller winds up the pulling rope, so that the surrounding purlin rises to a specified height;

[0030] S3, limiting the rotation of the winding roller by the second driving source or limiting the movement of the surrounding purlin by the locking member;

[0031] S4. Adjust the position of the installation part and connect it to the telescopic rod, and drive the two surrounding purlins to press against the inner wall of the groove through the telescopic rod.

[0032] By adopting the above technical solution, it is only necessary to calculate and design the installation position of the hanging part in advance, place the purlin in the groove, fix the hanging part to the specified position, drive the winding roller to rotate through the second driving source to lift the position of the purlin, and finally install the telescopic rod, and use the telescopic rod to press the purlin against the inner wall of the groove.

[0033] Optionally, in step S1, a plurality of pairs of surrounding purlins are arranged along the length direction of the groove, and guide structures are provided at both ends of the surrounding purlins, and the guide structures are connected to a hanging portion through a pulling rope.

[0034] By adopting the above technical solution, the purlins can be arranged in multiple pairs at intervals or side by side along the length direction of the groove, so as to facilitate supporting various positions of the groove at the same time, and the second driving source can be set in at least two groups, that is, each purlin can be lifted by disassembly, and when disassembly is required, only the locking part needs to be operated, which is easy to operate, low cost and stronger turnover performance.

[0035] In summary, the present application includes at least one of the following beneficial effects:

[0036] 1. When in use, you only need to place the purlin and the hanging part connected to the purlin in the groove, fix the position of the hanging part, drive the purlin to rise to the specified position through the second driving source, and then press the pair of purlins against the inner wall of the groove through the telescopic rod, which is easy to operate;

[0037] 2. The pulling rope includes a vertical straight section and an inclined diagonal section, and is arranged perpendicular to the length direction of the purlin, so that the pulling rope has a better pulling effect on the purlin, and when the winding roller rotates, the straight section and the diagonal section can be in a straight state, which is convenient for lifting and lowering, and can maintain the stability of the purlin;

[0038] 3. The telescopic rod and the mounting part are detachably connected, so that when dismantling is required, the telescopic rod can be moved in advance so that the surrounding purlin no longer presses against the inner wall of the groove, which facilitates the dismantling work. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0040] Figure 2 is a partial cross-sectional schematic diagram of an embodiment of the present application along a direction perpendicular to the length of the groove;

[0041] Figure 3 It is a partial schematic diagram showing the guide structure and the suspension structure of the embodiment of the present application;

[0042] Figure 4 It is a partial schematic diagram showing the support rod structure of an embodiment of the present application.

[0043] Explanation of the reference numerals in the accompanying drawings: 1. groove; 2. purlin; 21. main body; 22. mounting portion; 231. mounting plate; 24. slide groove; 25. clearance groove; 3. telescopic rod; 31. inner rod; 32. outer rod; 33. first driving source; 34. cover plate; 4. suspension portion; 41. winding roller; 42. bevel gear set; 43. linkage rod; 44. rotating rod; 45. third driving source; 46. clamping block; 5. second driving source; 6. guide structure; 61. first wheel seat; 62. second wheel seat; 63. guide wheel; 64. pulling rope; 641. oblique section; 642. straight section; 7. support rod; 71. sliding sleeve; 72. anchor rod; 73. clamping bolt. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-4 This application is described in further detail.

[0045] The embodiment of the present application discloses a convenient pipe network groove support system, referring to Figure 1 and Figure 2 The pipe network trench portable support system includes a purlin 2, a hanging part 4 and a telescopic rod 3 arranged in the trench 1. The purlin 2 is in a rectangular shape, and its length direction is along the length direction of the trench 1, and there are multiple pairs of purlins 2, and the two purlins 2 in each pair are respectively used to press against the opposite inner walls of the trench 1. Since there are multiple pairs of purlins 2, multiple purlins 2 are spaced or connected end to end on the inner wall along the length direction of the trench 1, so that multiple purlins 2 can press against the inner wall of the trench 1 at the same time, further playing a role in supporting the trench 1.

[0046] Reference Figure 1 and Figure 2Two telescopic rods 3 are provided between a pair of purlins 2. The two telescopic rods 3 are respectively close to one end of the purlin 2. The telescopic rods 3 include an inner rod 31 and an outer rod 32 which are sleeved and slidably connected. One end of the inner rod 31 and the outer rod 32 are respectively detachably connected to a purlin 2. An installation cavity is provided in the outer rod 32, and a cover plate 34 for opening and closing the installation cavity is rotatably connected to the outer wall of the outer rod 32. A first driving source 33 is fixed in the installation cavity. The first driving source 33 is a hydraulic cylinder. The first driving source 33 can push the two purlins 2 away from each other, so that the purlin 2 is pressed against the inner wall of the groove 1, and the groove 1 plays a supporting role.

[0047] Reference Figure 1 and Figure 2 The purlin 2 includes a main body 21, and two slide grooves 24 are provided on the surface of the main body 21 away from the inner wall of the groove 1. The mounting part 22 is slidably connected in the slide groove 24. The mounting part 22 includes a mounting plate 231 at one end away from the inner wall of the groove 1. The mounting plate 231 is detachably connected to the end of the inner rod 31 or the outer rod 32 through bolts, and when the mounting part 22 moves in a direction away from the telescopic rod 3, the mounting plate 231 can press against the side wall of the main body 21, thereby pressing the purlin 2 against the inner wall of the groove 1. By setting the mounting part 22, when disassembly is required, the telescopic rod 3 can be retracted by the first driving source 33, so that the purlin 2 no longer presses against the inner wall of the groove 1, and at this time, the installation and disassembly of the purlin 2 and the telescopic rod 3 can be facilitated.

[0048] Reference Figure 2 and Figure 3 The hanging part 4 is fixedly connected to the inner wall of the groove 1 and includes a driving part at the top. The driving part is located outside the groove 1 and includes a rotating rod 44 with a horizontal axis and perpendicular to the length direction of the groove 1 and capable of rotation. A linkage rod 43 with a vertical axis and a winding roller 41 with an axis parallel to the length direction of the groove 1 are also rotatably connected in the hanging part 4. The rotating rod 44 and the linkage rod 43, as well as the linkage rod 43 and the winding roller 41, are linked by a bevel gear set 42, that is, bevel gears are coaxially fixed at both ends of the linkage rod 43, and bevel gears are also coaxially fixed on the rotating rod 44 and the winding roller 41, and adjacent bevel gears are meshed, so that the winding roller 41 can be driven to rotate when the rotating rod 44 rotates. A lifting rope 64 is wound on the winding roller 41, and the lifting rope 64 is connected to the surrounding purlin 2, so that the surrounding purlin 2 can be lifted when winding.

[0049] Reference Figure 2 and Figure 3The pipe network trench portable support system also includes a second driving source 5 and a locking member. The second driving source 5 is placed on the ground outside the trench 1 and includes an output shaft with a horizontal axis. The output shaft and the rotating rod 44 are coaxially detachably connected. The connection method can be one of a sleeve, a coupling, a key, and a bolt, etc., so that when the output shaft rotates, the rotating rod 44 can be driven to rotate. The second driving source 5 can be a stepping motor or a servo motor, so that it can provide support for the purlin 2 during the process of raising the purlin 2. When the purlin 2 rises to a suitable position, in order to remove the second driving source 5 or reduce the damage of the second driving source 5, the position of the purlin 2 can be locked by a locking member.

[0050] Reference Figure 2 and Figure 3 In some preferred embodiments of the present application, the locking member is located in the hanging portion 4, and is used to press against the rotating rod 44 or the winding roller 41 or the pressing block 46 of the rotating rod 44. The present application takes pressing against the winding roller 41 as an example. A third driving source 45 for driving the pressing block 46 to move is fixed in the hanging portion 4. The third driving source 45 can specifically be a battery-powered electric cylinder, and the end of the output shaft is connected to the pressing block 46. Because it is located in the hanging portion 4, the hanging portion 4 can protect the third driving source 45. When the purlin 2 is lifted to a suitable height, the pressing block 46 can be driven by the third driving source 45 to press against the winding roller 41 to limit the movement of the purlin 2, thereby facilitating the disassembly of the second driving source 5 and the installation of the telescopic rod 3.

[0051] Reference Figure 1 and Figure 4 In some preferred embodiments of the present application, the locking member further comprises a plurality of support rods 7 rotatably connected to the bottom of the purlin 2, the support rods 7 comprising a sleeve 71 and an anchor rod 72 inserted in the sleeve 71, and a tightening bolt 73 for tightening the anchor rod 72 is threadedly connected to the support rod 7. A clearance groove 25 is provided at the bottom of the purlin 2 along the length direction, and one end of the sleeve 71 is rotatably connected to the inner wall of the clearance groove 25, so that the support rod 7 can be rotated and stored in the clearance groove 25. When the purlin 2 moves to a suitable height, the support rod 7 can be rotated out, and the length of the support rod 7 can be adjusted, and the end of the anchor rod 72 can be anchored to the bottom wall of the groove 1, so that the purlin 2 can also be supported, thereby limiting the movement of the purlin 2, so as to facilitate the disassembly of the second driving source 5 and the installation of the telescopic rod 3. In the present application, the structure of the third driving source 45, the tightening block 46 and the support rod 7 is specifically provided at the same time, so that the structure of the tightening block 46 and the support rod 7 can be used separately or simultaneously.

[0052] Reference Figure 2 and Figure 3A guide structure 6 is arranged on the top surface of the purlin 2, and there are multiple groups of guide structures 6. This application takes two groups as an example, and the two groups are respectively arranged at positions near the two ends of the top surface of the purlin 2, corresponding one to one and used in conjunction with a hanging part 4.

[0053] The guide structure 6 includes a first wheel seat 61 and a second wheel seat 62 fixed on the surface of the purlin 2, and the connecting line direction of the first wheel seat 61 and the second wheel seat 62 is perpendicular to the length direction of the purlin 2. The first wheel seat 61 and the second wheel seat 62 are both rotatably connected with guide wheels 63, and the axis direction of the guide wheels 63 is parallel to the length direction of the purlin 2. The pulling rope 64 passes through the bottom of the two guide wheels 63 and abuts against the bottom of the guide wheels 63, and one end is fixed to the winding roller 41, and the other end is fixed to the inner wall of the hanging part 4, so that the pulling rope 64 includes an oblique section 641 and a straight section 642, and the straight section 642 and the oblique section 641 can always keep a straight state during the lifting process of the purlin 2, so that the lifting process of the purlin 2 is more stable, and the pulling rope 64 can always better support the purlin 2.

[0054] The implementation principle of a convenient pipe network groove support system in the embodiment of the present application is as follows: a plurality of pairs of purlins 2 are arranged along the length direction of the groove 1, which can be driven by the telescopic rod 3 and pressed against the opposite inner wall of the groove 1, thereby achieving a supporting effect on the inner wall of the groove 1; when in use, it is only necessary to place the purlin 2 and the hanging part 4 connected to the purlin 2 in the groove 1, and fix the position of the hanging part 4, and after the purlin 2 is adjusted to rise to the specified position by driving through the second driving source 5, a pair of purlins 2 can be pressed against the inner wall of the groove 1 through the telescopic rod 3, which is easy to operate; and after the installation is completed, the second driving source 5 can be removed. When disassembly is required, after the telescopic rod 3 and the hanging part 4 are retracted and disassembled, the various structures can be disassembled and transferred for installation in other positions, thereby improving the construction efficiency and making the turnover stronger.

[0055] The present application also discloses a construction method of a pipe network trench portable support system, comprising the following steps:

[0056] S1, placing a plurality of pairs of purlins 2 in the groove 1, and each pair of purlins 2 are arranged opposite to each other, and fixing the hanging part 4 at a designated position on the inner wall of the groove 1;

[0057] S2, placing a second driving source 5 on the ground outside the groove 1, and connecting the output shaft of the second driving source 5 to the rotating rod 44 of the hanging part 4, when driving the second driving source 5, the winding roller 41 winds up the pulling rope 64, and the surrounding purlin 2 is raised to a specified height;

[0058] S3, limiting the rotation of the winding roller 41 by the second driving source 5 and / or driving the pressing block 46 to press against the winding roller 41 by the third driving source 45, so as to limit the rotation of the winding roller 41;

[0059] S4, adjust the position of the mounting portion 22 and connect it to the telescopic rod 3, and drive the telescopic rod 3 to extend and retract through the first driving source 33 in the telescopic rod 3, thereby driving the two surrounding purlins 2 to press against the inner wall of the groove 1;

[0060] The support rod 7 is rotated and the length of the support rod 7 is adjusted so that the support rod 7 is in a vertical state, and the anchor rod 72 of the support rod 7 is inserted into or abutted against the bottom wall of the groove 1 to provide support for the surrounding purlin 2.

[0061] The basic principle of the embodiment of the method of the present application is: during installation, it is only necessary to set the installation position of the hanging part 4 in advance, and the second driving source 5 can drive the purlin 2 to move to a suitable position, and finally the telescopic rod 3 is connected and telescopically drives the purlin 2 to press against the inner wall of the groove 1, which is convenient to operate, and at least two second driving sources 5 can be set, and the second driving source 5 can be quickly disassembled by detachably connecting with the rotating rod 44 to facilitate the lifting of other purlins 2, and when not in use, the second driving source 5 can be folded to reduce damage to the second driving source 5;

[0062] In addition, when the supporting structure needs to be disassembled, it is only necessary to retract the telescopic rod 3 through the first driving source 33 to drive the mounting portion 22 to slide, so that the surrounding purlin 2 is no longer pressed against the inner wall of the groove 1, and then remove the telescopic rod 3, and finally remove the hanging portion 4, and take out the hanging portion 4 and the surrounding purlin 2. The operation is convenient and the turnover is stronger.

[0063] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A convenient pipe network trench support system, It is characterized in that include: Purlins (2), the purlins (2) being arranged in pairs in the groove (1), and a pair of purlins (2) being respectively used to press against opposite side walls of the groove (1), and the length direction of the purlins (2) being parallel to the length direction of the groove (1); A telescopic rod (3), the telescopic rod (3) being located between a pair of purlins (2), and having two ends detachably connected to the purlins (2), the telescopic rod (3) being provided with a first driving source (33) for driving the telescopic rod (3) to extend and retract; A hanging part (4), wherein a plurality of hanging parts (4) are detachably provided on opposite side walls of the groove (1), a winding roller (41) is rotatably connected to the hanging part (4), a pulling rope (64) is wound around the winding roller (41), and the pulling rope (64) is used to be connected to the top surface of the surrounding purlin (2) so as to pull the surrounding purlin (2); A locking member, wherein the locking member is used to lock the position of the purlin (2) after the purlin (2) moves; a second driving source (5), the second driving source (5) being located outside the groove (1), the suspension portion (4) comprising a driving portion located outside the groove (1), the output shaft of the second driving source (5) being used for being detachably connected to the driving portion to drive the winding roller (41) to rotate; The pulling rope (64) comprises a vertical straight section (642) and an inclined diagonal section (641); the planes where the straight section (642) and the diagonal section (641) are located are perpendicular to the length direction of the surrounding purlin (2); when the surrounding purlin (2) is suspended in the air, the straight section (642) and the diagonal section (641) are both in a stretched state; At least two groups of guide structures (6) are provided on the purlin (2), and the guide structure (6) comprises a first wheel seat (61) and a second wheel seat (62) fixed on the purlin (2), and guide wheels (63) are rotatably connected in the first wheel seat (61) and the second wheel seat (62), and the axes of the two guide wheels (63) and the winding roller (41) are parallel to the length direction of the purlin (2), and the pulling rope (64) passes around the two guide wheels (63) at the same time, and one end of the pulling rope is fixed to the winding roller (41), and the other end is fixed to the hanging part (4); The locking member comprises a pressing block (46) slidably disposed on the driving portion, the driving portion being provided with a third driving source (45) for driving the pressing block (46) to move, the pressing block (46) being used to press against the rotating rod (44) or the linkage rod (43) or the winding roller (41); The locking member further comprises a plurality of support rods (7) rotatably connected to the bottom of the surrounding purlin (2), the support rods (7) comprising a sliding sleeve (71) and an anchor rod (72) inserted into the sliding sleeve (71), and a tightening bolt (73) for tightening the anchor rod (72) is threadedly connected to the support rod (7); a clearance groove (25) is provided at the bottom of the surrounding purlin (2) along the length direction, and one end of the sliding sleeve (71) is rotatably connected to the inner wall of the clearance groove (25), so that the support rod (7) can be rotatably received in the clearance groove (25); The driving part comprises a rotating rod (44) located outside the groove (1) and capable of rotating, the length direction of the rotating rod (44) being horizontal and perpendicular to the length direction of the purlin (2), one end of the rotating rod (44) being coaxially detachably connected to an output shaft of the second driving source (5), and the rotating rod (44) being capable of driving the winding roller (41) to rotate when rotating; The driving part comprises a linkage rod (43) whose axis is perpendicular to both the length direction of the surrounding purlin (2) and the length direction of the rotating rod (44); one end of the linkage rod (43) and the rotating rod (44) are driven via a bevel gear set (42); and the other end of the linkage rod (43) and the winding roller (41) are also driven via the bevel gear set (42).

2. A pipe network trench portable support system according to claim 1, It is characterized in that The purlin (2) comprises a main body (21) and a mounting portion (22) slidably connected to the main body (21); the mounting portion (22) slides in the same direction as the length of the telescopic rod (3); and both ends of the telescopic rod (3) are detachably connected to a mounting portion (22).

3. A pipe network trench portable support system according to claim 2, It is characterized in that A sliding groove (24) for the mounting portion (22) to slide is provided on a side wall of the main body (21) close to the telescopic rod (3); the mounting portion (22) comprises a mounting plate (231) connected to an end of the telescopic rod (3); the mounting plate (231) is movable to abut against a surface of the main body (21) close to the telescopic rod (3).

4. A construction method for a pipe network trench portable support system, using the portable support system as claimed in any one of claims 1 to 3, It is characterized in that The following steps are involved: S1, placing the surrounding purlins (2) in pairs in the groove (1), and connecting the hanging part (4) to the inner wall of the groove (1); S2, connecting the output shaft of the second driving source (5) to the rotating rod (44) of the suspension part (4), so that the winding roller (41) winds up the pulling rope (64), so that the surrounding purlin (2) rises to a specified height; S3, limiting the rotation of the winding roller (41) by means of the second driving source (5) or limiting the movement of the surrounding purlin (2) by means of a locking member; S4. After adjusting the position of the mounting portion (22), the mounting portion (22) is connected to the telescopic rod (3), and the two surrounding purlins (2) are driven by the telescopic rod (3) to press against the inner wall of the groove (1).

5. A construction method for a pipe network trench portable support system according to claim 4, It is characterized in that In step S1, a plurality of pairs of purlins (2) are arranged along the length direction of the groove (1), and guide structures (6) are arranged at both ends of the purlins (2), and the guide structures (6) are connected to a hanging portion (4) via a pulling rope (64).

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