Integral synchronous descending dismantling method and device for slip form system

Abstract

The invention relates to the technical field of civil engineering, and discloses a slip form system overall synchronous descending dismantling method and device which comprises a scaffold, a supporting rod is fixedly connected to the upper surface of the middle of the scaffold, a fixing table is fixedly connected to the upper surface of the supporting rod, and a fixing block is fixedly connected to the lower surface of the middle of the scaffold. The scaffold, the supporting rod and the fixing block are fixed through a fixing assembly, a first motor is fixedly connected to the upper surface of the fixing table, a worm gear is connected to the tooth end of a worm in a meshed mode, a threaded column is connected to the interior of the worm gear in a threaded mode, a supporting column is fixedly connected to the bottom end of the threaded column, and a tensioning assembly is fixedly connected to the outer wall of the left side of the fixing block. By starting the first motor, the first motor drives the threaded column to ascend and descend, so that an operator can precisely control the descending process according to the structural characteristics, dismantling requirements and actual site conditions of the sliding formwork system, and it is ensured that the sliding formwork system is kept stable in the dismantling process.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering, and in particular to a method and a device for overall synchronous lowering and dismantling of a sliding form system. Background Art

[0002] The slipform system is a structural system used in fields such as construction. It is mainly composed of a slipform, an operating platform, and lifting equipment. The slipform provides a continuous surface for concrete forming, the operating platform is provided for construction operations, and the lifting equipment provides power to achieve actions such as the slipform rising. It can be used to construct tall structures such as chimneys, water towers, bridge piers, and walls of high-rise buildings.

[0003] There are many problems with the traditional dismantling method of the slipform system. In the past, due to the lack of effective overall synchronous descent control methods, forced separation was often the only option. This method made it difficult for operators to finely control the dismantling process based on the actual structural characteristics of the slipform system, dismantling requirements and complex on-site conditions. During the dismantling process, the slipform system is prone to unstable conditions such as shaking and tilting, making it difficult to maintain a smooth descent. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method and device for overall synchronous descent dismantling of a sliding form system, which solves the problem that the traditional sliding form system dismantling method lacks effective overall synchronous descent control means.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method and device for the overall synchronous descent and dismantling of a sliding form system, including a scaffold, a support rod is fixedly connected to the upper surface of the middle part of the scaffold, a fixed platform is fixedly connected to the upper surface of the support rod, a fixed block is fixedly connected to the lower surface of the middle part of the scaffold, the scaffold, support rod and fixed block are fixed by a fixing assembly, a motor is fixedly connected to the upper surface of the fixed platform, a worm is connected to the output end of the motor, a worm is meshed with a worm wheel at the tooth end of the worm, a threaded column is connected to the internal thread of the worm wheel, the bottom end of the threaded column is fixedly connected to the support column, and a tensioning assembly is fixedly connected to the left outer wall of the fixed block.

[0006] Preferably, the tensioning assembly includes an electric push rod 1, the right outer wall of the electric push rod 1 is fixedly connected to the left outer wall of the fixed block, the output end of the electric push rod 1 is connected to an extrusion block, and the interior of the extrusion block is arranged on the outer wall of the support column.

[0007] Preferably, a limiting block is fixedly connected to the left upper surface of the fixed block, a baffle is fixedly connected to the inside of one side of the limiting block, and a motor 2 is fixedly connected to the inside of the other side of the limiting block, and a roller is connected to the output end of the motor 2, and the output end of the motor 2 is rotatably connected to the inside of the baffle, and the outer wall of the roller is in contact with the outer wall of the support column.

[0008] Preferably, the output end of the motor 2 is connected to the ratchet 1, and the tooth end of the ratchet 1 is meshingly connected to the ratchet tooth 1.

[0009] Preferably, the upper surface of the limit block is fixedly connected to an electric push rod 2, the output end of the electric push rod 2 is connected to a connecting rod 1, and the outer wall of the connecting rod 1 is fixedly connected to a connecting rod 2.

[0010] Preferably, the outer wall of the second connecting rod is rotatably connected to the inner part of the upper side of the baffle, and the outer wall of the second connecting rod is fixedly connected to the inner part of the first ratchet.

[0011] Preferably, the fixing assembly includes a shell 1, the outer wall of the shell 1 is fixedly connected to the right inner part of the support rod, the inner part of the shell 1 is rotatably connected to a rotating rod 1, the right outer wall of the rotating rod 1 is fixedly connected to a handle, the middle part of the rotating rod 1 is fixedly connected to a bevel gear 1, the tooth end of the bevel gear 1 is meshingly connected to a bevel gear 2, and the bottom end of the bevel gear 2 is fixedly connected to a rotating rod 2.

[0012] Preferably, the fixing assembly also includes a second shell, an outer wall of the second shell is fixedly connected to the upper surface of the scaffolding, a mounting plate is fixedly connected to the interior of the second shell, an outer wall of the second rotating rod is rotatably connected to the interior of the second shell, a spring is arranged around the lower side of the second rotating rod, a fixing hook is arranged on the outer wall of the spring, an upper outer wall of the fixing hook is slidably connected to the lower side of the mounting plate, and an upper surface of the spring is arranged inside the second shell.

[0013] Preferably, the right outer wall of the rotating rod 1 is fixedly connected to the ratchet 2, the tooth end of the ratchet 2 is meshingly connected to the ratchet 2, the outer wall of the ratchet 2 is rotatably connected to the outer wall of the shell 1, and the lower outer wall of the ratchet 2 is fixedly connected to the paddle.

[0014] Preferably, a method for dismantling a sliding form system by synchronously descending the entire system comprises the following steps: S1, start motor 1. When motor 1 rotates, it drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel rotates and drives the threaded column to rise and fall, the threaded column drives the scaffold, support rod, fixed platform, fixed block and motor 1 to rise and fall; S2, when the scaffold, support rod, fixed platform, fixed block and motor 1 rise to a fixed height, by starting the electric push rod 1, the electric push rod 1 will drive the extrusion block to slide, and the extrusion block will squeeze the threaded column while sliding, and finally the scaffold, support rod, fixed platform and fixed block are fixed; S3. When the scaffold, support rod, fixed platform, fixed block and motor 1 rise to the top, first manually press the paddle to disengage ratchet 2 from ratchet 2, then manually turn the handle, the rotation of the handle will drive the rotating rod 1 to rotate inside the shell 1, and at the same time, the rotating rod 1 will drive the bevel gear 1 to rotate, the rotation of the bevel gear 1 will drive the bevel gear 2 at the tooth end and the rotating rod 2 to rotate, the rotation of the rotating rod 2 will drive the bottom spring to deform, the deformation of the spring will drive the fixing hook to slide inside the lower side of the mounting plate, so that the spring is disengaged from the shell 2, and finally the support rod, fixed platform, motor 1 and threaded column are removed; S4, start the electric push rod 2 again, the electric push rod 2 will drive the connecting rod 1 to rotate, when the connecting rod 1 rotates, it will drive the connecting rod 2 to rotate inside the baffle, and at the same time, the connecting rod 2 will drive the ratchet 1 to release the ratchet 1; S5, when it is necessary to descend, by starting the second motor, the second motor will drive the roller to rotate on the outer wall of the support column, and then by starting the first electric push rod, the first electric push rod drives the extrusion block to fit the outer wall of the support column to increase the friction. Under the action of the first electric push rod and the extrusion block, the scaffolding and the fixed block will slowly descend, and finally the scaffolding and the fixed block will move downward; S6. First, manually press the paddle to disengage ratchet tooth 2 from ratchet wheel 2, and then manually rotate the handle. The rotation of the handle will drive rotating rod 1 to rotate inside housing 1, and rotating rod 1 will drive bevel gear 1 to rotate. The rotation of bevel gear 1 will drive bevel gear 2 at the tooth end and rotating rod 2 to rotate. The rotation of rotating rod 2 will cause the bottom spring to deform. The deformation of the spring will drive the fixing hook to slide inside the lower side of the mounting plate, causing the spring to disengage from housing 2. Finally, the scaffolding and fixing block are removed.

[0015] The present invention provides a method and device for the overall synchronous descent dismantling of a sliding form system, which has the following beneficial effects: 1. The present invention starts motor 1, which drives the threaded column to rise and fall, so that the operator can finely control the descent process according to the structural characteristics of the sliding formwork system, the demolition requirements and the actual situation on site, ensure that the sliding formwork system remains stable during the demolition process, reduce the impact on the surrounding structures, and meet the high-precision requirements of complex demolition operations.

[0016] 2. The present invention drives the extrusion block to clamp the support column through the electric push rod, so as to ensure that the sliding form system maintains a good balance during the descent process. The sliding form system may have a center of gravity shift due to its own structural characteristics and the difference in the dismantling progress of each part during descent. By clamping the support column, this shift can be corrected in time to prevent the sliding form system from tilting, making the overall descent process smoother and more orderly, and reducing dismantling accidents caused by unstable factors.

[0017] 3. The present invention manually rotates the handle, which drives the fixing hook to fix and release the shell 2, thereby greatly shortening the installation and disassembly time of the slipform system, allowing construction workers to quickly complete the assembly and disassembly of various components, significantly speeding up the construction progress, thereby shortening the entire project period and saving a lot of time and cost for the project.

[0018] 4. The present invention cooperates with the second motor and the roller to assist the sliding system in descending, thereby enhancing the overall process continuity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the fixing block of the present invention; Figure 3 It is a schematic diagram of the local structure of the worm gear of the present invention; Figure 4 It is a cross-sectional schematic diagram of the internal structure of the limit block of the present invention; Figure 5 It is a schematic diagram of a partial structure of a ratchet wheel of the present invention; Figure 6 It is a partial structural schematic diagram of a housing of the present invention; Figure 7 It is a schematic cross-sectional view of the internal structure of the housing of the present invention; Figure 8 It is a schematic cross-sectional view of the internal structure of the second housing of the present invention.

[0020] Among them, 1. Scaffolding; 2. Support rod; 3. Fixed platform; 4. Fixed block; 5. Motor 1; 6. Worm; 7. Worm wheel; 8. Threaded column; 9. Support column; 10. Electric push rod 1; 11. Extrusion block; 12. Limit block; 13. Baffle; 14. Motor 2; 15. Roller; 16. Ratchet 1; 17. Electric push rod 2; 18. Connecting rod 1; 19. Connecting rod 2; 20. Ratchet 1; 21. Shell 1; 22. Rotating rod 1; 23. Handle; 24. Bevel gear 1; 25. Bevel gear 2; 26. Rotating rod 2; 27. Shell 2; 28. Mounting plate; 29. ​​Spring; 30. Fixed hook; 31. Ratchet 2; 32. Ratchet 2; 33. Pick. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Please see attached Figure 1 -Attached Figure 3 The embodiment of the present invention provides a method and device for synchronously descending and dismantling a sliding form system as a whole, including a scaffold 1, a support rod 2 is fixedly connected to the upper surface of the middle part of the scaffold 1, a fixed platform 3 is fixedly connected to the upper surface of the support rod 2, a fixed block 4 is fixedly connected to the lower surface of the middle part of the scaffold 1, the scaffold 1, the support rod 2 and the fixed block 4 are fixed by a fixing assembly, a motor 5 is fixedly connected to the upper surface of the fixed platform 3, a worm 6 is connected to the output end of the motor 5, a worm gear 7 is meshedly connected to the tooth end of the worm gear 6, a threaded column 8 is connected to the internal thread of the worm gear 7, a support column 9 is fixedly connected to the bottom end of the threaded column 8, and a tensioning assembly is fixedly connected to the left outer wall of the fixed block 4.

[0023] Specifically, by starting the motor 5, the motor 5 will drive the worm 6 to rotate, and the rotation of the worm 6 drives the worm wheel 7 to rotate. The rotation of the worm wheel 7 will drive the threaded column 8 to rise and fall. When the threaded column 8 is rising and falling, its own reaction force drives the entire device to rise and fall. When the sliding formwork system is lowered to the ground as a whole, it will be dismantled. This allows the operator to finely control the descent process according to the structural characteristics of the sliding formwork system, the dismantling requirements and the actual situation on site, thereby ensuring that the sliding formwork system remains stable during the dismantling process, reducing the impact on surrounding structures, and meeting the high-precision requirements of complex dismantling operations.

[0024] Please see attached Figure 2 The tensioning assembly includes an electric push rod 10, the right outer wall of the electric push rod 10 is fixedly connected to the left outer wall of the fixed block 4, the output end of the electric push rod 10 is connected to the extrusion block 11, and the interior of the extrusion block 11 is arranged on the outer wall of the support column 9.

[0025] Specifically, the extrusion block 11 is driven to slide by an electric push rod 10, and the extrusion block 11 will clamp the support column 9 when sliding, so as to ensure that the sliding form system maintains a good balance during the descent process. The sliding form system may have a center of gravity shift when descending due to its own structural characteristics, differences in the demolition progress of various parts, etc., and this shift can be corrected in time by clamping the support column 9 to prevent the sliding form system from tilting, making the overall descent process smoother and more orderly, and reducing demolition accidents caused by unstable factors.

[0026] Please see attached Figure 2 and attached Figure 4 A limiting block 12 is fixedly connected to the upper left surface of the fixed block 4, a baffle 13 is fixedly connected to the inside of one side of the limiting block 12, and a motor 2 14 is fixedly connected to the inside of the other side of the limiting block 12. A roller 15 is connected to the output end of the motor 2 14, and the output end of the motor 2 14 is rotatably connected to the inside of the baffle 13, and the outer wall of the roller 15 is in contact with the outer wall of the support column 9.

[0027] Specifically, by starting motor 2 14, motor 2 14 will drive roller 15 to rotate, and roller 15 will rotate on the outer wall of support column 9. Baffle 13 is used to support roller 15 to rotate, while enhancing the internal structural stability of limit block 12. Finally, motor 2 14 and roller 15 cooperate with each other to assist the sliding system to descend, thereby enhancing the overall process continuity.

[0028] Please see attached Figure 4 - and attached Figure 5 The output end of the motor 14 is connected to a ratchet 16, and the tooth end of the ratchet 16 is meshedly connected to a ratchet 20; the upper surface of the limit block 12 is fixedly connected to an electric push rod 17, the output end of the electric push rod 17 is connected to a connecting rod 18, and the outer wall of the connecting rod 18 is fixedly connected to a connecting rod 2 19; the outer wall of the connecting rod 2 19 is rotatably connected to the upper side of the baffle 13, and the outer wall of the connecting rod 2 19 is fixedly connected to the inside of the ratchet 20.

[0029] Specifically, the electric push rod 2 17 is started to drive the connecting rod 18 to move. During the movement, the connecting rod 18 drives the connecting rod 2 19 and the ratchet 20 to rotate. When the ratchet 20 leaves the tooth end of the ratchet wheel 16, it is used to release the roller 15 for rotation. When the ratchet 20 does not leave the tooth end of the ratchet wheel 16, it is used to prevent the sliding formwork system from suddenly falling due to an accident, thereby ensuring the safety of the construction workers.

[0030] Please see attached Figure 6 -Attached Figure 8The fixing assembly includes a shell 21, the outer wall of the shell 21 is fixedly connected to the right inner part of the support rod 2, the inner part of the shell 21 is rotatably connected to a rotating rod 22, the outer wall of the right side of the rotating rod 22 is fixedly connected to a handle 23, the middle part of the rotating rod 22 is fixedly connected to a bevel gear 24, the tooth end of the bevel gear 24 is meshedly connected to a bevel gear 25, and the bottom end of the bevel gear 25 is fixedly connected to a rotating rod 26; the fixing assembly also includes a shell 27, the outer wall of the shell 27 is fixedly connected to the upper surface of the scaffold 1, the inner part of the shell 27 is fixedly connected to a mounting plate 28, the outer wall of the rotating rod 26 is rotatably connected to the inner part of the shell 27, springs 29 are arranged around the lower side of the rotating rod 26, the outer wall of the spring 29 is arranged with a fixing hook 30, the upper outer wall of the fixing hook 30 is slidably connected to the lower inner part of the mounting plate 28, and the upper surface of the spring 29 is arranged inside the shell 27.

[0031] Specifically, by manually rotating the handle 23, the rotation of the handle 23 will drive the rotating rod 22 to rotate inside the shell 21. At the same time as the handle 23 rotates, the rotating rod 22 will drive the bevel gear 24 to rotate, and then the rotation of the bevel gear 24 will drive the bevel gear 25 and the rotating rod 26 at the tooth end to rotate. At the same time as the rotating rod 26 rotates, the bottom spring 29 will be driven to deform. The spring 29 will deform due to its own structure. The deformation of the spring 29 will drive the fixing hook 30 to slide inside the lower side of the mounting plate 28, so that the spring 29 is separated from the shell 27. Finally, the entire device is dismantled, thereby greatly shortening the installation and disassembly time of the slipform system, allowing construction personnel to quickly complete the assembly and disassembly of various components, significantly accelerating the construction progress, thereby shortening the entire project schedule, and saving a lot of time and cost for the project.

[0032] Please see attached Figure 6 The right outer wall of the rotating rod 1 22 is fixedly connected with a ratchet 2 31 , the tooth end of the ratchet 2 31 is meshedly connected with a ratchet 2 32 , the outer wall of the ratchet 2 32 is rotatably connected to the outer wall of the shell 1 21 , and the lower outer wall of the ratchet 2 32 is fixedly connected with a paddle 33 .

[0033] Specifically, the ratchet 2 31 is used to prevent the handle 23 from rotating due to accidental vibration. When disassembly is required, the paddle 33 is used to drive the ratchet 2 32 to rotate so that the ratchet 2 32 is separated from the tooth end of the ratchet 2 31. When fixing is required, the ratchet 2 32 is tightly clamped on the tooth end of the ratchet 2 31.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sliding form system overall synchronous descending dismantling device, comprising a scaffold (1), characterized in that: The middle upper surface of the scaffolding (1) is fixedly connected to a support rod (2), the upper surface of the support rod (2) is fixedly connected to a fixed platform (3), the middle lower surface of the scaffolding (1) is fixedly connected to a fixed block (4), the scaffolding (1), the support rod (2) and the fixed block (4) are fixed by a fixing assembly, the upper surface of the fixed platform (3) is fixedly connected to a motor 1 (5), the output end of the motor 1 (5) is connected to a worm (6), the tooth end of the worm (6) is meshingly connected to a worm wheel (7), the internal thread of the worm wheel (7) is connected to a threaded column (8), the bottom end of the threaded column (8) is fixedly connected to a support column (9), and the left outer wall of the fixed block (4) is fixedly connected to a tensioning assembly.

2. The overall synchronous descending dismantling device of the sliding form system according to claim 1 is characterized in that: The tensioning assembly comprises an electric push rod 1 (10), the right outer wall of the electric push rod 1 (10) being fixedly connected to the left outer wall of the fixed block (4), the output end of the electric push rod 1 (10) being connected to an extrusion block (11), the interior of the extrusion block (11) being arranged on the outer wall of the support column (9).

3. The overall synchronous descending dismantling device of the sliding form system according to claim 2 is characterized in that: The upper left surface of the fixed block (4) is fixedly connected to a limit block (12); a baffle (13) is fixedly connected inside one side of the limit block (12); a second motor (14) is fixedly connected inside the other side of the limit block (12); an output end of the second motor (14) is connected to a roller (15); the output end of the second motor (14) is rotatably connected inside the baffle (13); and an outer wall of the roller (15) is in contact with an outer wall of the support column (9).

4. The overall synchronous descending dismantling device of the sliding form system according to claim 3 is characterized in that: The output end of the motor 2 (14) is connected to the ratchet 1 (16), and the tooth end of the ratchet 1 (16) is meshingly connected to the ratchet tooth 1 (20).

5. The overall synchronous descending dismantling device of the sliding form system according to claim 4 is characterized in that: The upper surface of the limit block (12) is fixedly connected to an electric push rod 2 (17), the output end of the electric push rod 2 (17) is connected to a connecting rod 1 (18), and the outer wall of the connecting rod 1 (18) is fixedly connected to a connecting rod 2 (19).

6. The overall synchronous descending dismantling device of the sliding form system according to claim 5, characterized in that: The outer wall of the second connecting rod (19) is rotatably connected to the interior of the upper side of the baffle (13), and the outer wall of the second connecting rod (19) is fixedly connected to the interior of the first ratchet (20).

7. The overall synchronous descending dismantling device of the sliding form system according to claim 1 is characterized in that: The fixing assembly comprises a shell 1 (21), the outer wall of the shell 1 (21) is fixedly connected to the right inner part of the support rod (2), the inner part of the shell 1 (21) is rotatably connected to a rotating rod 1 (22), the right outer wall of the rotating rod 1 (22) is fixedly connected to a handle (23), the middle part of the rotating rod 1 (22) is fixedly connected to a bevel gear 1 (24), the tooth end of the bevel gear 1 (24) is meshingly connected to a bevel gear 2 (25), and the bottom end of the bevel gear 2 (25) is fixedly connected to a rotating rod 2 (26).

8. The overall synchronous descending dismantling device of the sliding form system according to claim 7 is characterized in that: The fixing assembly also includes a second shell (27), the outer wall of the second shell (27) is fixedly connected to the upper surface of the scaffold (1), the interior of the second shell (27) is fixedly connected to a mounting plate (28), the outer wall of the second rotating rod (26) is rotatably connected to the interior of the second shell (27), a spring (29) is arranged around the lower side of the second rotating rod (26), the outer wall of the spring (29) is arranged with a fixing hook (30), the upper outer wall of the fixing hook (30) is slidably connected to the lower side of the mounting plate (28), and the upper surface of the spring (29) is arranged inside the second shell (27).

9. The overall synchronous descending dismantling device of the sliding form system according to claim 7, characterized in that: The right side outer wall of the rotating rod 1 (22) is fixedly connected to the ratchet 2 (31), the tooth end of the ratchet 2 (31) is meshingly connected to the ratchet 2 (32), the outer wall of the ratchet 2 (32) is rotatably connected to the outer wall of the housing 1 (21), and the lower side outer wall of the ratchet 2 (32) is fixedly connected to the paddle (33).

10. A method for dismantling a sliding form system by synchronous descent as a whole, characterized in that: The overall synchronous descending dismantling device for a sliding form system as claimed in claim 9 comprises the following steps: S1, start the motor 1 (5), when the motor 1 (5) rotates, it drives the worm (6) to rotate, the worm (6) drives the worm wheel (7) to rotate, the rotation of the worm wheel (7) drives the threaded column (8) to rise and fall, the threaded column (8) drives the scaffold (1), the support rod (2), the fixed platform (3), the fixed block (4) and the motor 1 (5) to rise and fall; S2, when the scaffold (1), the support rod (2), the fixed platform (3), the fixed block (4) and the motor 1 (5) rise to a fixed height, the electric push rod 1 (10) is started, and the electric push rod 1 (10) drives the extrusion block (11) to slide, and the extrusion block (11) squeezes the threaded column (8) while sliding, and finally the scaffold (1), the support rod (2), the fixed platform (3) and the fixed block (4) are fixed; S3. When the scaffold (1), the support rod (2), the fixed platform (3), the fixed block (4) and the motor 1 (5) rise to the top, first manually press the paddle (33) to disengage the ratchet 2 (32) from the ratchet 2 (31), and then manually rotate the handle (23). The rotation of the handle (23) drives the rotating rod 1 (22) to rotate inside the housing 1 (21). At the same time, the rotating rod 1 (22) drives the bevel gear 1 (24) to rotate. The rotation of the bevel gear 1 (24) drives the bevel gear 2 (25) at the tooth end and the rotating rod 2 (26) to rotate. When the rotating rod 2 (26) rotates, the bottom spring (29) is deformed. The deformation of the spring (29) drives the fixing hook (30) to slide inside the lower side of the mounting plate (28), so that the spring (29) is disengaged from the housing 2 (27). Finally, the support rod (2), the fixed platform (3), the motor 1 (5) and the threaded column (8) are removed. S4, restarting the electric push rod 2 (17), the electric push rod 2 (17) will drive the connecting rod 1 (18) to rotate, when the connecting rod 1 (18) rotates, it will drive the connecting rod 2 (19) to rotate inside the baffle (13), and at the same time, the connecting rod 2 (19) will drive the ratchet 1 (20) to release the ratchet 1 (16); S5, when it is necessary to descend, the motor 2 (14) is started, the motor 2 (14) drives the roller (15) to rotate on the outer wall of the support column (9), and then the electric push rod 1 (10) is started, the electric push rod 1 (10) drives the extrusion block (11) to fit on the outer wall of the support column (9), thereby increasing the friction force. Under the action of the electric push rod 1 (10) and the extrusion block (11), the scaffold (1) and the fixed block (4) slowly descend, and finally the scaffold (1) and the fixed block (4) move downward; S6. First, manually press the paddle (33) to disengage the second ratchet (32) from the second ratchet (31), and then manually rotate the handle (23). The rotation of the handle (23) drives the first rotating rod (22) to rotate inside the first housing (21). At the same time, the first rotating rod (22) drives the first bevel gear (24) to rotate. The rotation of the first bevel gear (24) drives the second bevel gear (25) and the second rotating rod (26) at the tooth end to rotate. The rotation of the second rotating rod (26) drives the bottom spring (29) to deform. The deformation of the spring (29) drives the fixing hook (30) to slide inside the lower side of the mounting plate (28), so that the spring (29) is separated from the second housing (27). Finally, the scaffold (1) and the fixing block (4) are removed.

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