Scaffolding pole quick connection device and method for cantilever structure

Abstract

A scaffolding pole quick connection device and method for cantilever structure, comprising a pipe seat, a pipe joint, a self-closing piece, a connecting piece and a locking cover. The pipe joint is arranged in the cavity of the pipe seat, and the self-closing piece and the connecting piece radially pass through the pipe seat and the pipe joint. The self-closing piece cooperates with the pipe joint to limit the position, and a torsion spring is connected to the self-closing piece and the pipe seat. The connecting piece and the locking cover are installed on the lower end of the pole of the scaffolding side frame. The pipe seat, the pipe joint and the self-closing piece are connected to the upper end of the pole of the scaffolding side frame to form a side frame assembly. The scaffolding is fixed on the suspended platform of the hydropower station. The side frame assembly is connected to the lower end of the scaffolding and extends downward to the working area in sequence. During the scaffolding erection process, there is no need to extend it upward from the ground. The operation is simple and convenient, and the erection and disassembly are quick and efficient, safe and reliable.

Description

Technical Field

[0001] The invention belongs to the technical field of high-altitude maintenance platform connection for hydropower stations, and relates to a scaffolding upright pole quick connection device and method for a cantilever structure. Background Art

[0002] In the maintenance work of hydropower stations, there are a lot of high-altitude operations. When the equipment is suspended, it is a great test for the maintenance personnel to carry out routine maintenance and inspection work. Since the equipment is suspended on all sides, a temporary maintenance work platform needs to be set up for each maintenance. At present, the main method of setting up the platform for this type of maintenance work is to set up a steel pipe scaffolding in a suspended manner from top to bottom at the location that needs maintenance. For the location far away from the suspended maintenance location, the scaffolding is extended and set up by means of a bolt connection. Since the work platform is set up from top to bottom, it is a very difficult task for the erection personnel to extend it downward each time. During the extension process, one person is required to assist in pulling the extended scaffolding pole. The erection personnel use one hand to connect the upper and lower poles of the extended scaffolding poles, and use the other hand to hold the pin shaft to effectively connect the upper and lower poles. During the operation, the safety protection of the erection personnel themselves is controlled by the upper auxiliary personnel. The degree of danger is very high, and the erection process will consume a lot of manpower, and maintenance cannot be carried out quickly, efficiently, and safely. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a quick connection device and method for scaffolding uprights of a cantilever structure, in which a pipe joint is arranged in the cavity of a pipe seat, a self-closing piece and a connecting piece radially pass through the pipe seat and the pipe joint, the self-closing piece cooperates with the pipe joint to limit the position, a torsion spring is connected to the self-closing piece and the pipe seat, the connecting piece and the locking cover are installed on the lower end of the upright of the scaffolding side frame, the pipe seat, the pipe joint and the self-closing piece are connected to the upper end of the upright of the scaffolding side frame to form a side frame assembly, the scaffolding is fixed on the suspended platform of the hydropower station, the side frame assembly is connected to the lower end of the scaffolding and extends downward to the working area in sequence, and the scaffolding does not need to be extended upward from the ground during erection, the operation is simple and convenient, and the erection and disassembly are quick and efficient, safe and reliable.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a quick connection device for scaffolding uprights of cantilever structure, which includes a pipe seat, a pipe joint, a self-closing piece, a connecting piece and a locking cover; one end of the pipe joint is located in the pipe seat, the self-closing piece radially passes through the pipe seat and is connected to the pipe joint, the connecting piece passes through the upper end of the pipe joint and slides with the guide groove on the pipe seat, and the locking cover is located on the upper part of the connecting piece and is sleeved with the end of the pipe seat; the pipe seat is moved to rotate around the self-closing piece to form an angle with the pipe joint, and after the moving force is removed, the pipe seat automatically resets to be on the same axis as the pipe joint.

[0005] The tube seat is a hollow rectangular tube, and avoidance grooves with openings opposite to each other are respectively arranged on the two corresponding sides of the rectangular tube. The axial hole on the other side of the rectangular tube passes through the avoidance groove laterally, and a guide groove with an arc structure is arranged on the upper part of the avoidance groove, and the self-closing member passes through the axial hole.

[0006] A limiting ring is arranged on the pipe body of the pipe joint, and an open groove and a polygonal through hole are arranged on the pipe body at both ends of the limiting ring respectively, the connecting piece passes through the open groove, and the polygonal through hole cooperates with the self-closing piece to limit.

[0007] The self-closing part and the connecting part both include a bolt body, a shoulder is arranged on the screw rod near the bolt head end, and a sliding sleeve is arranged on the screw rod near the nut end; the sliding sleeve includes a retaining ring connected to one end of the tube body, and the retaining ring is close to the nut end.

[0008] The shaft shoulder on the connecting piece and the outer wall of the tube body of the sliding sleeve are slidably matched with the guide groove on the tube seat.

[0009] Two polygonal bosses are arranged on the screw rod between the shaft shoulder of the self-closing member and the sliding sleeve, and the polygonal bosses are matched with the polygonal through holes on the pipe joint.

[0010] Torsion springs are sleeved on the shaft shoulder and the sliding sleeve of the self-closing member, and the two ends of the two torsion springs are respectively connected to the bolt head end and the sliding sleeve and the pipe walls on both sides of the pipe seat.

[0011] When the pipe seat and the pipe joint are located on the same axis, the torsion spring is in an initial state; when the pipe seat and the pipe joint form an angle, the torsion spring is in a torsion state.

[0012] The locking cover is a cover plate with a rectangular opening at the lower end, a pipe hole is arranged at the upper end of the cover plate, and the rectangular opening cooperates with the upper end of the pipe seat.

[0013] The connection method of the scaffolding pole quick connection device for the cantilever structure as above comprises the following steps:

[0014] S1, install the connector and the locking cover, sleeve the locking cover on the lower end of the vertical poles of the multiple side frames, the screw of the connector passes through the through hole at the lower end of the vertical pole to limit the locking cover from sliding off, and then the nut on the connector is matched with the threaded end of the screw; in this step, the side frame is connected by the vertical pole and multiple cross bars;

[0015] S2, install the pipe seat and the pipe joint. On the basis of S1, insert the pipe joint into the upper end of the vertical pole of the side frame, then sleeve the pipe seat with the pipe joint and the vertical pole, and the screw of the self-closing member passes through the pipe seat, the vertical pole and the pipe joint to form a side frame assembly; in this step, the guide groove of the pipe seat and the opening groove of the pipe joint are both facing upward, the polygonal through hole of the pipe joint cooperates with the polygonal boss of the self-closing member, and one end of the torsion spring is connected to the pipe wall of the pipe seat;

[0016] S3, fixing the scaffolding, fixing the scaffolding on the suspended platform of the hydropower station; in this step, the lower end of the scaffolding is in a suspended state, and the partition of the scaffolding is connected to the side frame;

[0017] S4, installing the side frame. When the scaffold needs to be suspended and extended downward, the side frame assembly is suspended at the lower end of the scaffold, the locking cover at the lower end of the scaffold is pushed upward, and the pipe seat is toggled to one side to be deflected. The pipe joint at the upper end of the side frame assembly is plugged into the vertical pole at the lower end of the scaffold side frame, the pipe seat is loosened and the locking cover is pushed down and sleeved on the upper end of the pipe seat. At this time, the lower end of the scaffold is connected to the side frame assembly as a whole; in this step, during the insertion of the pipe joint, the open groove is engaged with the screw of the connecting piece at the lower end of the vertical pole;

[0018] S5, erecting a partition, overlapping and enclosing the partition with the lower end of the side frame assembly to form a working platform; in this step, steps are arranged on the side of the partition;

[0019] S6, repeat S4 to S5 in sequence until the scaffolding extends downward to the working area.

[0020] The main beneficial effects of the present invention are:

[0021] The scaffolding is fixed on the suspended platform. The pipe seats, pipe joints, self-closing parts, connecting parts and locking covers are combined with the scaffolding side frames to form a side frame assembly. The side frame assembly is connected to the lower end of the scaffolding and extends downward to the target maintenance area. The erection and disassembly are quick and efficient, safe and reliable, and easy to operate.

[0022] A locking cover is sleeved on the lower end of the vertical pole of the side frame, and the screw of the connecting piece passes through the through hole at the lower end of the vertical pole to restrict the locking cover, thereby preventing the locking cover from slipping during installation and disassembly.

[0023] During installation, push the locking cover at the lower end of the scaffolding upwards, move the pipe seat to one side, and connect the pipe joint at the upper end of the side frame assembly with the vertical pole at the lower end of the scaffolding side frame. Loosen the pipe seat and push down the locking cover sleeve on the upper end of the pipe seat to lock the side frame assembly. The connection is convenient and the operation is simple.

[0024] When the pipe joint is connected to the vertical pole, the open groove engages with the screw of the connecting piece at the lower end of the vertical pole, and no interference occurs during the connection. At the same time, the screw also radially limits the vertical pole to avoid deviation and dislocation during the connection.

[0025] One end of the two torsion springs on the self-closing part is connected to the pipe wall of the pipe joint, and the other end is connected to the bolt head and the sliding sleeve. In the initial state, the pipe joint and the pipe seat are located on the same axis. When the pipe seat is deflected by being pushed, the torsion spring generates torque. After the pushing force is removed, the pipe seat automatically resets and covers the vertical pole of the side frame under the torsion of the torsion spring. The locking cover slides down the vertical pole and is arranged on the upper end of the pipe seat for limiting, thereby improving the safety performance of the scaffolding.

[0026] When the pipe seat is reset after deflection, the guide groove on one side thereof slides with the shaft shoulder and the sliding sleeve on the connecting piece, and slides and resets along the guide groove of the arc structure during sliding, effectively avoiding jamming during the reset process.

[0027] The two sides of the pipe seat are respectively provided with avoidance grooves with openings in opposite directions, which effectively avoids the interference between the pipe seat and the vertical pole during the deflection and reset process.

[0028] The limiting ring arranged on the pipe joint is used to limit the end of the vertical rod of the side frame, thereby improving the overall structural strength of the scaffolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0030] Figure 1 It is a structural schematic diagram of the present invention.

[0031] Figure 2 for Figure 1 Exploded diagram.

[0032] Figure 3 It is a schematic structural diagram of the tube holder of the present invention.

[0033] Figure 4 for Figure 3 Schematic diagram of the left side.

[0034] Figure 5 for Figure 3 Schematic diagram of the right side.

[0035] Figure 6 It is a schematic structural diagram of the pipe joint of the present invention.

[0036] Figure 7 It is a structural schematic diagram of the self-closing member of the present invention.

[0037] Figure 8 It is a schematic structural diagram of the connecting piece of the present invention.

[0038] Fig. 9 It is a structural schematic diagram of the locking cover of the present invention.

[0039] Fig.10 It is a schematic structural diagram of the side frame assembly of the present invention.

[0040] Fig.11 This is a state diagram of the present invention when plugged into the side frame uprights.

[0041] Fig.12 This is a state diagram of the present invention when used in conjunction with a scaffold.

[0042] In the figure: pipe seat 1, avoidance groove 11, shaft hole 12, guide groove 13, pipe joint 2, limit ring 21, opening groove 22, polygonal through hole 23, self-closing member 3, connecting member 4, locking cover 5, pipe hole 51, shaft shoulder 61, sliding sleeve 62, polygonal boss 63, torsion spring 64. DETAILED DESCRIPTION

[0043] like Figure 1 to Figure 12 A quick connection device for scaffolding uprights of cantilever structure is disclosed, which comprises a pipe seat 1, a pipe joint 2, a self-closing piece 3, a connecting piece 4 and a locking cover 5; one end of the pipe joint 2 is located in the pipe seat 1, the self-closing piece 3 radially passes through the pipe seat 1 and is connected to the pipe joint 2, the connecting piece 4 passes through the upper end of the pipe joint 2 and slides with the guide groove 13 on the pipe seat 1, and the locking cover 5 is located at the upper part of the connecting piece 4 and is sleeved with the end of the pipe seat 1; the pipe seat 1 is moved to rotate around the self-closing piece 3 to form an angle with the pipe joint 2, and the pipe seat 1 automatically resets to be on the same axis with the pipe joint 2 after the moving force is removed. When in use, the pipe seat 1, the pipe joint 2 and the self-closing piece 3 are connected to the upper end of the uprights of the scaffolding side frame to form a side frame assembly, the scaffolding is fixed on the suspended platform of the hydropower station, the side frame assembly is connected to the lower end of the scaffolding and extends downward to the working area in sequence, and the scaffolding does not need to be extended upward from the ground during erection, the operation is simple and convenient, and the erection and disassembly are fast and efficient, safe and reliable.

[0044] In the preferred solution, the tube seat 1 is a hollow rectangular tube, and the two corresponding sides of the rectangular tube are respectively provided with avoidance grooves 11 with openings in opposite directions to each other, and the axial hole 12 on the other side of the rectangular tube passes through the avoidance groove 11 laterally, and a guide groove 13 with an arc structure is arranged on the upper part of the avoidance groove 11, and the self-closing member 3 passes through the axial hole 12. When in use, the avoidance groove 11 avoids interference with the vertical pole of the side frame when deflecting to one side, and the guide groove 13 slides with the shoulder 61 and the sliding sleeve 62 on the connecting member 4 during the resetting process, so that the tube seat 1 can be flexibly reset to avoid jamming, and the tube seat 1 holds the two butted vertical pole ends after resetting.

[0045] In the preferred solution, a limiting ring 21 is provided on the pipe body of the pipe joint 2, and an open groove 22 and a polygonal through hole 23 are respectively provided on the pipe body at both ends of the limiting ring 21, the connector 4 passes through the open groove 22, and the polygonal through hole 23 cooperates with the self-closing member 3 to limit the position. When in use, the two sides of the limiting ring 21 on the pipe joint 2 are in contact with the ends of the two butt-jointed vertical poles to limit the depth of the vertical poles when plugged in, thereby improving the structural strength of the side frame assembly when connected, thereby improving the overall stability and structural strength of the scaffolding.

[0046] In the preferred solution, the self-closing member 3 and the connecting member 4 both include a bolt body, a shoulder 61 is provided on the screw rod near the bolt head end, and a sleeve 62 is provided on the screw rod near the nut end; the sleeve 62 includes a retaining ring connected to one end of the tube body, and the retaining ring is close to the nut end. When manufacturing, the self-closing member 3 and the connecting member 4 both use the bolt body as a basic component, which is conducive to improving the versatility during manufacturing and reducing the manufacturing cost.

[0047] In a preferred solution, the shaft shoulder 61 on the connector 4 and the outer wall of the tube body of the sliding sleeve 62 are slidably matched with the guide groove 13 on the tube seat 1. When in use, the shaft shoulder 61 on the connector 4 and the tube body on its sliding sleeve 62 adopt a sliding surface, and slide with the guide groove 13 during the resetting process of the tube seat 1, thereby reducing the resistance during sliding, improving the flexibility during sliding, and avoiding jamming during sliding.

[0048] In a preferred embodiment, two polygonal bosses 63 are provided on the screw between the shoulder 61 and the sleeve 62 of the self-closing member 3, and the polygonal bosses 63 cooperate with the polygonal through hole 23 on the pipe joint 2. When in use, the polygonal bosses 63 on the self-closing member 3 cooperate with the polygonal through hole 23 on the pipe joint 2 to limit the position, so that the pipe joint 2 is restricted in the cavity of the pipe seat 1.

[0049] In a preferred solution, a torsion spring 64 is sleeved on the shaft shoulder 61 and the sliding sleeve 62 of the self-closing member 3, and the two ends of the two torsion springs 64 are respectively connected to the bolt head end and the sliding sleeve 62 and the tube walls on both sides of the tube seat 1. When in use, the bolt head end of one end of the two torsion springs 64 on the self-closing member 3 is connected to the retaining ring on the sliding sleeve 62, and the other end is connected to the tube walls on both sides of the tube seat 1.

[0050] Preferably, torsion spring holes are provided on the side surface of the bolt head end, the side surface of the retaining ring of the sliding sleeve 62 and the tube wall of the tube seat 1, and the end of the torsion spring 64 is inserted into the torsion spring hole to be connected thereto.

[0051] In the preferred solution, when the pipe seat 1 and the pipe joint 2 are located on the same axis, the torsion spring 64 is in the initial state; when the pipe seat 1 and the pipe joint 2 form an angle, the torsion spring 64 is in a torsion state. When in use, when the torsion spring 64 is in the initial state, the pipe joint 2 is located in the cavity of the pipe seat 1 on the same axis; when the side frame assembly and the scaffold are installed, the pipe seat 1 is moved to deflect to one side, and the torsion spring 64 is in a torsion energy storage state. After the torsion force is removed, the pipe seat 1 rotates back to the original position under the action of the torsion spring 64 to cover the ends of the two butt-jointed vertical rods.

[0052] In a preferred solution, the locking cover 5 is a cover plate with a rectangular opening at the lower end, a pipe hole 51 is arranged at the upper end of the cover plate, and the rectangular opening is matched with the upper end of the pipe seat 1. When in use, when the side frame assembly is docked with the scaffold, after the pipe seat 1 is reset to cover the ends of the two docking vertical poles, the locking cover 5 slides down along the vertical poles and is sleeved on the upper end of the pipe seat 1, limiting the position of the pipe seat 1 and preventing it from deflecting, thereby improving the overall structural strength, stability and safety.

[0053] In a preferred embodiment, the connection method of the scaffolding pole quick connection device for the cantilever structure as above comprises the following steps:

[0054] S1, install the connector and the locking cover, sleeve the locking cover 5 on the lower end of the vertical poles of the multiple side frames, the screw of the connector 4 passes through the through hole at the lower end of the vertical pole to limit the locking cover 5 from sliding off, and then the nut on the connector 4 is matched with the threaded end of the screw; in this step, the side frame is connected by the vertical pole and multiple cross bars;

[0055] S2, install the pipe seat and the pipe joint. On the basis of S1, insert the pipe joint 2 into the upper end of the vertical pole of the side frame, then sleeve the pipe seat 1 with the pipe joint 2 and the vertical pole, and the screw of the self-closing member 3 passes through the pipe seat 1, the vertical pole and the pipe joint 2 to form a side frame assembly; in this step, the guide groove 13 of the pipe seat 1 and the opening groove 22 of the pipe joint 2 are both facing upward, the polygonal through hole 23 of the pipe joint 2 cooperates with the polygonal boss 63 of the self-closing member 3, and one end of the torsion spring 64 is connected to the pipe wall of the pipe seat 1;

[0056] S3, fixing the scaffolding, fixing the scaffolding on the suspended platform of the hydropower station; in this step, the lower end of the scaffolding is in a suspended state, and the partition of the scaffolding is connected to the side frame;

[0057] S4, install the side frame. When the scaffold needs to be suspended and extended downward, suspend the side frame assembly at the lower end of the scaffold, push the locking cover 5 at the lower end of the scaffold upward, and turn the pipe seat 1 to one side. The pipe joint 2 at the upper end of the side frame assembly is plugged into the vertical pole at the lower end of the scaffold side frame. Loosen the pipe seat 1 and push the locking cover 5 downward to be sleeved on the upper end of the pipe seat 1. At this time, the lower end of the scaffold is connected to the side frame assembly as a whole. In this step, during the insertion of the pipe joint 2, the open groove 22 is engaged with the screw of the connector 4 at the lower end of the vertical pole;

[0058] S5, erecting a partition, overlapping and enclosing the partition with the lower end of the side frame assembly to form a working platform; in this step, steps are arranged on the side of the partition;

[0059] S6, repeat S4 to S5 in sequence until the scaffolding extends downward to the working area.

[0060] The above method is to first install the locking cover 5 and the connecting piece 4 on the lower end of the side frame, and then connect the pipe seat 1 with the pipe joint 2 and the vertical pole. The screw of the self-closing piece 3 passes through the pipe seat 1, the vertical pole and the pipe joint 2 to form a side frame assembly. The side frame assembly is then connected to the scaffolding to form a suspended structure, and extends downward to the maintenance target area. There is no need to set up a scaffolding from the ground, which improves the overall safety and maintenance cost. It is easy to install and disassemble and does not cause damage to the foundation of the hydropower station.

[0061] The above-mentioned embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The embodiments and features in the embodiments of the present application can be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A quick connection device for scaffolding poles of cantilever structures, characterized by: It comprises a pipe seat (1), a pipe joint (2), a self-closing piece (3), a connecting piece (4) and a locking cover (5); one end of the pipe joint (2) is located in the pipe seat (1); the self-closing piece (3) radially passes through the pipe seat (1) and is connected to the pipe joint (2); the connecting piece (4) passes through the upper end of the pipe joint (2) and is slidably matched with a guide groove (13) on the pipe seat (1); the locking cover (5) is located on the upper part of the connecting piece (4) and is sleeved with the end of the pipe seat (1); the pipe seat (1) is moved so that it rotates around the self-closing piece (3) to form an angle with the pipe joint (2); after the moving force is removed, the pipe seat (1) automatically resets and is located on the same axis as the pipe joint (2).

2. The scaffolding pole quick connection device for cantilever structure according to claim 1 is characterized in that: The tube seat (1) is a hollow rectangular tube, and two corresponding sides of the rectangular tube are respectively provided with avoidance grooves (11) with openings in opposite directions to each other, an axial hole (12) on the other side of the rectangular tube laterally passes through the avoidance groove (11), a guide groove (13) with an arc structure is provided on the upper part of the avoidance groove (11), and the self-closing member (3) passes through the axial hole (12).

3. The scaffolding pole quick connection device for cantilever structure according to claim 1 is characterized in that: A limiting ring (21) is provided on the pipe body of the pipe joint (2), and an open groove (22) and a polygonal through hole (23) are respectively provided on the pipe body at both ends of the limiting ring (21); the connecting piece (4) passes through the open groove (22), and the polygonal through hole (23) cooperates with the self-closing piece (3) for limiting.

4. The scaffolding pole quick connection device for cantilever structure according to claim 1 is characterized in that: The self-closing member (3) and the connecting member (4) both comprise a bolt body, a shaft shoulder (61) being provided on the screw rod near the bolt head end, and a sliding sleeve (62) being provided on the screw rod near the nut end; the sliding sleeve (62) comprises a retaining ring connected to one end of the tube body, the retaining ring being near the nut end.

5. The scaffolding pole quick connection device for cantilever structure according to claim 4 is characterized in that: The shaft shoulder (61) on the connecting member (4) and the outer wall of the tube body of the sliding sleeve (62) are slidably matched with the guide groove (13) on the tube seat (1).

6. The scaffolding pole quick connection device for cantilever structure according to claim 4 is characterized in that: Two polygonal bosses (63) are provided on the screw between the shaft shoulder (61) and the sliding sleeve (62) of the self-closing member (3), and the polygonal bosses (63) cooperate with the polygonal through holes (23) on the pipe joint (2).

7. The scaffolding pole quick connection device for cantilever structure according to claim 4 is characterized in that: Torsion springs (64) are sleeved on the shaft shoulder (61) and the sliding sleeve (62) of the self-closing member (3), and the two ends of the two torsion springs (64) are respectively connected to the bolt head end and the sliding sleeve (62) and the pipe wall on both sides of the pipe seat (1).

8. The scaffolding pole quick connection device for cantilever structure according to claim 7 is characterized in that: When the pipe seat (1) and the pipe joint (2) are located on the same axis, the torsion spring (64) is in an initial state; when the pipe seat (1) and the pipe joint (2) form an included angle, the torsion spring (64) is in a torsion state.

9. The scaffolding pole quick connection device for cantilever structure according to claim 1 is characterized in that: The locking cover (5) is a cover plate with a rectangular opening at the lower end, a pipe hole (51) is arranged at the upper end of the cover plate, and the rectangular opening cooperates with the upper end of the pipe seat (1).

10. The connection method of the scaffolding pole quick connection device for cantilever structure according to any one of claims 1 to 9, characterized in that: It includes the following steps: S1, installing the connecting piece and the locking cover, sleeve the locking cover (5) on the lower end of the vertical poles of the plurality of side frames, the screw of the connecting piece (4) passes through the through hole at the lower end of the vertical pole to limit the locking cover (5) from sliding off, and then the nut on the connecting piece (4) is matched with the threaded end of the screw; in this step, the side frame is formed by connecting the vertical poles and the plurality of horizontal poles; S2, installing the pipe seat and the pipe joint. On the basis of S1, insert the pipe joint (2) into the upper end of the vertical pole of the side frame, then sleeve the pipe seat (1) with the pipe joint (2) and the vertical pole, and the screw of the self-closing member (3) passes through the pipe seat (1), the vertical pole and the pipe joint (2) to form a side frame assembly. In this step, the guide groove (13) of the pipe seat (1) and the opening groove (22) of the pipe joint (2) are both facing upward, the polygonal through hole (23) of the pipe joint (2) cooperates with the polygonal boss (63) of the self-closing member (3), and one end of the torsion spring (64) is connected to the pipe wall of the pipe seat (1); S3, fixing the scaffolding, fixing the scaffolding on the suspended platform of the hydropower station; in this step, the lower end of the scaffolding is in a suspended state, and the partition of the scaffolding is connected to the side frame; S4, installing the side frame. When the scaffolding needs to be suspended and extended downward, the side frame assembly is suspended at the lower end of the scaffolding, the locking cover (5) at the lower end of the scaffolding is pushed upward, and the pipe seat (1) is moved to deflect to one side. The pipe joint (2) at the upper end of the side frame assembly is plugged into the vertical pole at the lower end of the scaffolding side frame. The pipe seat (1) is loosened and the locking cover (5) is pushed downward to be sleeved on the upper end of the pipe seat (1). At this time, the lower end of the scaffolding is connected to the side frame assembly as a whole. In this step, during the insertion of the pipe joint (2), the open groove (22) is engaged with the screw of the connecting piece (4) at the lower end of the vertical pole; S5, erecting a partition, overlapping and enclosing the partition with the lower end of the side frame assembly to form a working platform; in this step, steps are arranged on the side of the partition; S6, repeat S4 to S5 in sequence until the scaffolding extends downward to the working area.

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