High pier column automatic lifting construction platform and using method

Abstract

The invention relates to a high pier stud automatic lifting construction platform and a using method, and belongs to the technical field of high pier stud construction platforms, the high pier stud automatic lifting construction platform comprises a pier stud, the upper end and the lower end of the outer surface of the pier stud are sleeved with a top plate and a bottom plate respectively, the left side and the right side of the bottom plate are each fixedly provided with two mounting plates, and a plurality of lifting plates are arranged between the top plate and the bottom plate; lifting structures are arranged in the multiple lifting plates, and a protection structure is arranged at the top end of the top plate. The lifting structure comprises two first lifting rods hinged to the top plate and the left ends and the right ends of the lower ends of the multiple lifting plates, and the other ends of the first lifting rods are hinged to moving blocks. According to the high pier column automatic lifting construction platform and the using method, by arranging the lifting structure, when the construction platform is lifted, a worker can move along with the construction platform on the construction platform, the convenience of the construction platform in the lifting process can be effectively improved, and through the protection structure, the safety of the construction platform is improved. And the safety coefficient of constructors on the construction platform can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of high pier column construction platforms, and in particular to an automatic lifting construction platform for high pier columns and a use method thereof. Background Art

[0002] The construction of piers, connecting beams and cap beams of bridge projects requires the construction of construction platforms, which are generally steel pipe external frame construction platforms or steel hoop construction platforms. The steel pipe external frame construction platform needs to be gradually built from the ground level upwards.

[0003] A Chinese patent (publication number: CN 118390415 A) discloses an automatic lifting platform and a method thereof, wherein the construction platform can climb to the required construction height of the pier column. However, in the above document, the construction platform can only be lifted and lowered when no one is on the construction platform during the climbing process, which makes the lifting and lowering of the construction platform inconvenient. Therefore, an automatic lifting construction platform for high pier columns and a method of use are proposed to solve the above problem. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an automatic lifting construction platform for high piers and a method for using the platform, which has the advantages of convenient lifting of the construction platform and solves the problem of inconvenient lifting of the construction platform.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic lifting construction platform for high pier columns and a method for using the platform, comprising a pier column, wherein the upper and lower ends of the outer surface of the pier column are respectively sleeved with a top plate and a bottom plate, two mounting plates are fixed to the left and right sides of the bottom plate, a plurality of lifting plates are arranged between the top plate and the bottom plate, a lifting structure is arranged inside the plurality of lifting plates, and a protective structure is arranged at the top of the top plate;

[0006] The lifting structure includes two first lifting rods hingedly connected to the left and right ends of the top plate and the lower ends of multiple lifting plates, the other end of the first lifting rod is hingedly connected to a moving block, the internal threads of the two moving blocks on the same side are connected to a screw, and the outer surfaces of the front and rear screws are fixed with two worm gears, the lifting structure also includes a rotating structure arranged in the inner cavity of the multiple lifting plates and the bottom plate, and the lifting structure also includes an auxiliary supporting structure arranged at the lower ends of the multiple lifting plates and the top plate.

[0007] Furthermore, the bottom plate and the top ends of the plurality of lifting plates are each provided with two sliding holes for the moving block to penetrate and slide inside.

[0008] Furthermore, the two front and rear screw rods are double-axis screw rods, and the opposite walls of the left and right moving blocks are each provided with a threaded hole for the screw rods to pass through.

[0009] Furthermore, the rotating structure includes two worm gears rotatably connected to the front and rear walls of the inner cavity of the multiple lifting plates and the bottom plate through bearings. The rotating structure also includes a motor fixed to the rear wall of the inner cavity of the multiple lifting plates and the bottom plate. Gears are fixed to the output end of the motor and the outer surface of the right worm gear, and the outer surfaces of the two worm gears are provided with transmission structures.

[0010] Furthermore, the auxiliary support structure includes two second lifting rods hingedly connected to the left and right sides of the top plate and the lower ends of multiple lifting plates, the other ends of the second lifting rods are hingedly connected to a slider, and the auxiliary support structure also includes two sliding grooves opened at the top ends of the multiple lifting plates and the bottom plate.

[0011] Furthermore, the slide groove is a T-shaped slide rail, the slider is located in the T shape, and the slider is slidably connected to the inside of the slide groove.

[0012] Furthermore, the protective structure includes a guardrail, wherein sliding rods are fixed to the left and right ends of the lower end of the guardrail, a sleeve rod is slidably connected to the outer surface of the sliding rod, an insert block is fixed to the bottom of the sleeve rod, a plurality of telescopic rods are provided on the front and rear sides of the lower end of the guardrail, a mounting rod is slidably connected to the outer surface of the telescopic rod, an electric push rod is provided at the front and rear ends of the lower end of the guardrail, T-shaped round blocks are fixed to the top ends of the front and rear two groups of telescopic rods and the output ends of the two electric push rods, and threaded blocks are fixed to the bottom ends of the front and rear two groups of mounting rods and the bottom ends of the two electric push rods.

[0013] Furthermore, a plurality of plug holes are provided at both left and right ends of the top end of the top plate, and the plug blocks are plugged into the inside of the plug holes.

[0014] Furthermore, a plurality of mounting holes are provided on both the front and rear sides of the top end of the top plate, and the threaded blocks are threadedly connected to the inside of the mounting holes.

[0015] The present invention also provides a method for using a high pier column automatic lifting construction platform based on any one of the above items, comprising the following steps:

[0016] S1. The construction personnel put the bottom plate, multiple lifting plates and top plate on the pier construction site, and install the protective structure on the top of the top plate. The front and rear two sets of threaded blocks are inserted into the threaded holes of the top plate and rotated to install the front and rear two sets of mounting rods and the front and rear two electric push rods on the top of the top plate.

[0017] S2, the plug-in blocks of the left and right sets of rods are plugged into the plug-in holes of the top plate to complete the installation of the protective structure, so that the construction workers can climb on the top plate and control the two electric push rods to work. The front and rear electric push rods drive the guardrail to move upward, thereby protecting the construction workers;

[0018] S3. When the construction workers are working on the top plate, the motor drives the worm to rotate through the gear, and the worm drives the front and rear screws to rotate through the two worm wheels;

[0019] S4, the left and right screw rods drive the left and right moving blocks to move in opposite directions, and the left and right moving blocks can drive the left and right first lifting rods to move in opposite directions, so that the first lifting rods gradually become vertical, and the left and right first lifting rods push the top plate to move upward;

[0020] S5. The height of the top plate can be adjusted through S4, that is, the height of the top plate can be adjusted according to the construction height of the pier, and the staff does not need to repeatedly go up and down;

[0021] S6. When the construction height adjusted by S5 is relatively low, steps S3 and S4 are repeated to make the two groups of first lifting rods connected by the plurality of lifting plates work, so as to be able to change the position height of the top plate multiple times.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] The high pier column automatic lifting construction platform and the use method are provided with a lifting structure. When the construction platform is being lifted or lowered, the staff can be located on the construction platform and move along with the construction platform, which can effectively improve the convenience of the construction platform when being lifted or lowered. In addition, by providing a protective structure, the safety factor of the construction personnel on the construction platform can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the top view of the lifting plate of the present invention;

[0026] Figure 3 It is a schematic diagram of the top view of the internal structure of the lifting plate of the present invention;

[0027] Figure 4 It is a three-dimensional structural schematic diagram of the protective structure of the present invention;

[0028] Figure 5 It is a schematic structural diagram of the telescopic rod and the mounting rod of the present invention.

[0029] In the figure: 1 pier, 2 top plate, 3 bottom plate, 4 mounting plate, 5 lifting plate, 51 first lifting rod, 52 moving block, 53 screw, 54 worm gear, 55 worm, 56 motor, 57 gear, 58 transmission structure, 59 sliding hole, 510 slide groove, 511 second lifting rod, 512 slider, 6 protection structure, 61 guardrail, 62 sliding rod, 63 sleeve rod, 64 plug block, 65 telescopic rod, 66 mounting rod, 67 electric push rod, 68 T-shaped round block, 69 threaded block. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments 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.

[0031] See also Figure 1 In this embodiment, an automatic lifting construction platform for a high pier and a method of using the platform include a pier 1, a top plate 2 and a bottom plate 3 are respectively sleeved on the upper and lower ends of the outer surface of the pier 1, two mounting plates 4 are fixed on the left and right sides of the bottom plate 3, so that the equipment can be installed at the construction site of the pier 1, a plurality of lifting plates 5 are arranged between the top plate 2 and the bottom plate 3, a lifting structure is arranged inside the plurality of lifting plates 5, and a protective structure 6 is arranged at the top of the top plate 2.

[0032] In addition, round holes for the pier column 1 to pass through are opened at the top ends of the top plate 2 , the multiple lifting plates 5 and the bottom plate 3 , so that the top plate 2 , the multiple lifting plates 5 and the bottom plate 3 can be sleeved on the outside of the pier column 1 .

[0033] See also Figures 1 to 3 The lifting structure in this embodiment includes two first lifting rods 51 hingedly connected to the left and right ends of the lower ends of the top plate 2 and the multiple lifting plates 5, the other end of the first lifting rod 51 is hingedly connected to a moving block 52, the internal threads of the two moving blocks 52 on the same side are connected to a screw 53, and the outer surfaces of the front and rear screws 53 are fixed with two worm gears 54. The lifting structure also includes a rotating structure arranged in the inner cavity of the multiple lifting plates 5 and the bottom plate 3, and the lifting structure also includes an auxiliary supporting structure arranged at the lower ends of the multiple lifting plates 5 and the top plate 2.

[0034] Among them, two sliding holes 59 are opened at the top of the bottom plate 3 and the multiple lifting plates 5 for the moving block 52 to pass through and slide inside, so that the moving block 52 can pass through the bottom plate 3 and the multiple lifting plates 5, so that the moving block 52 can be connected to the screw 53.

[0035] In addition, the front and rear screws 53 are double-axis screws, and the opposite walls of the left and right moving blocks 52 are provided with threaded holes for the screws 53 to pass through, so that the screws 53 can drive the left and right moving blocks 52 to move away from each other. When the left and right moving blocks 52 move away from each other, they can drive the left and right first lifting rods 51 to move from an inclined state to a vertical state, so that the left and right groups of first lifting rods 51 can push the top plate 2 or the lifting plate 5 to move upward.

[0036] In addition, the left and right ends of the screw rod 53 are rotatably connected to the left and right walls of the inner cavity of the bottom plate 3 of the lifting plate 5 through bearings.

[0037] See also Figure 3 The rotating structure in this embodiment includes two worm gears 55 rotatably connected to the front and rear walls of the inner cavity of the multiple lifting plates 5 and the bottom plate 3 through bearings. The rotating structure also includes a motor 56 fixed to the rear wall of the inner cavity of the multiple lifting plates 5 and the bottom plate 3. Gears 57 are fixed to the output end of the motor 56 and the outer surface of the right worm gear 55. The outer surfaces of the two worm gears 55 are provided with transmission structures 58.

[0038] Moreover, the worm 55 is located directly below the two front and rear worm wheels 54 on the same side, so that the worm 55 can accurately mesh with the worm wheel 54 and drive it to rotate.

[0039] See also Figure 2 The auxiliary support structure in this embodiment includes two second lifting rods 511 hingedly connected to the left and right sides of the lower ends of the top plate 2 and the multiple lifting plates 5, and the other end of the second lifting rod 511 is hingedly connected to a slider 512. The auxiliary support structure also includes two sliding grooves 510 opened at the top ends of the multiple lifting plates 5 and the bottom plate 3.

[0040] At the same time, the slide groove 510 is a T-shaped slide rail, and the slider 512 is located in the T shape. The slider 512 is slidably connected to the inside of the slide groove 510, so that when the left and right groups of first lifting rods 51 push the top plate 2 or the lifting plate 5 to move upward, the top plate 2 or the lifting plate 5 can drive the left and right groups of second lifting rods 511 to move. When the second lifting rods 511 move from an inclined state to a vertical state, the left and right second lifting rods 511 can drive the left and right sliders 512 to move back to back at the top of the top plate 2 or the lifting plate 5.

[0041] Furthermore, the two front and rear groups of first lifting rods 51 are located between the two front and rear groups of second lifting rods 511 .

[0042] See also Figures 4 to 5 The protection structure 6 in this embodiment includes a guardrail 61, and sliding rods 62 are fixed to the left and right ends of the lower end of the guardrail 61. The outer surface of the sliding rod 62 is slidably connected to a sleeve rod 63, and an insert block 64 is fixed to the bottom of the sleeve rod 63. A plurality of telescopic rods 65 are provided on the front and rear sides of the lower end of the guardrail 61, and the outer surface of the telescopic rod 65 is slidably connected to a mounting rod 66. Electric push rods 67 are provided at the front and rear ends of the lower end of the guardrail 61, and T-shaped round blocks 68 are fixed to the top ends of the front and rear two groups of telescopic rods 65 and the output ends of the two electric push rods 67, and threaded blocks 69 are fixed to the bottom ends of the front and rear two groups of mounting rods 66 and the bottom ends of the two electric push rods 67.

[0043] Secondly, a plurality of plug holes are provided at both left and right ends of the top of the top plate 2 , and the plug blocks 64 are plugged into the inside of the plug holes so that the sleeve rod 63 can be stably located at the top of the top plate 2 .

[0044] In addition, a plurality of mounting holes are provided on both the front and rear sides of the top of the top plate 2 , and the threaded block 69 is threadedly connected to the inside of the mounting holes, so that the mounting rod 66 and the electric push rod 67 can be installed on the top of the top plate 2 .

[0045] Furthermore, both the sleeve rod 63 and the mounting rod 66 are cylindrical with a hollow interior and a missing upper end, so that the slide rod 62 and the telescopic rod 65 can move into or out of the sleeve rod 63 and the mounting rod 66 .

[0046] In addition, a plurality of T-shaped circular grooves are provided at both the front and rear ends of the lower end of the guardrail 61, and the T-shaped round blocks 68 are rotatably connected to the inside of the T-shaped circular grooves, so that when the mounting rod 66 rotates, the guardrail 61 is prevented from obstructing the mounting rod 66 through the telescopic rod 65.

[0047] The present invention also provides a method for using a high pier column automatic lifting construction platform based on any one of the above items, comprising the following steps:

[0048] S1. The construction personnel put the bottom plate 3, multiple lifting plates 5 and the top plate 2 on the construction site of the pier 1, and install the protective structure 6 on the top of the top plate 2. The front and rear sets of threaded blocks 69 are inserted into the threaded holes of the top plate 2 and rotated, so that the front and rear sets of mounting rods 66 and the front and rear two electric push rods 67 are installed on the top of the top plate 2;

[0049] S2, the plug-in blocks of the left and right sets of rods 63 are plugged into the plug-in holes of the top plate 2, and the installation of the protective structure 6 is completed, so that the construction personnel can climb on the top plate 2 and control the two electric push rods 67 to work, and the front and rear electric push rods 67 drive the guardrail 61 to move upward, thereby protecting the construction personnel;

[0050] S3, when the construction workers are working on the top plate 2, the motor 56 drives the worm 55 to rotate through the gear 57, and the worm 55 drives the front and rear screws 53 to rotate through the two worm wheels 54;

[0051] S4, the left and right screw rods 53 drive the left and right moving blocks 52 to move in opposite directions, and the left and right moving blocks 52 can drive the left and right first lifting rods 51 to move in opposite directions, so that the first lifting rods 51 gradually become vertical, so that the left and right first lifting rods 51 push the top plate 2 to move upward;

[0052] S5, the height of the top plate 2 can be adjusted through S4, that is, the height of the top plate 2 can be adjusted according to the construction height of the pier 1, and the staff does not need to repeatedly go up and down;

[0053] When the construction height adjusted by S6 and S5 is relatively low, steps S3 and S4 are repeated to make the two groups of first lifting rods 51 connected by the plurality of lifting plates 5 work so as to change the position height of the top plate 2 multiple times.

[0054] It should be noted that the transmission structure 58 and the electronic components appearing in the text are all commonly known to the public in the prior art, and the control method is controlled by a controller. The electrical components appearing in the text are all connected to the controller and the power supply. The control circuit of the controller can be implemented by simple programming by technicians in this field, and the provision of power supply is also well known in the art, so the control method and circuit connection will not be explained in detail.

[0055] The working principle of the above embodiment is:

[0056] When in use, the output end of the motor 56 drives the left gear 57 to rotate, and the left gear 57 drives the right worm 55 to rotate through the right gear 57, and the right worm 55 drives the left worm 55 to rotate through the transmission structure 58, so that the left and right worms 55 are meshed with the left and right groups of worm wheels 54, so that the left and right worms 55 can drive the left and right groups of worm wheels 54 to rotate, so that the two groups of worm wheels 54 can simultaneously drive the front and rear two screw rods 53 to rotate, so that the left and right screw rods 53 drive the left and right groups of moving blocks 52 to move back to each other, so that the moving block 52 drives the first lifting rod 51 to move, that is, the left and right groups of first lifting rods 51 push the top plate 2 to move upward, so that the height of the position of the top plate 2 can be adjusted, and the staff can be located on the top plate 2 to perform lifting work, and if the height needs to be continuously adjusted, the above steps are transmitted, so that the lower two groups of first lifting rods 51 push the lifting plate 5 to move upward, so that the height of the position of the top plate 2 can be continuously changed;

[0057] Furthermore, when the top plate 2 moves upward, it drives the left and right sets of second lifting rods 511 to move, and the left and right sets of second lifting rods 511 drive the left and right sets of sliders 512 to move in opposite directions, so as to enhance the support of the top plate 2 when it is lifted or lowered;

[0058] Moreover, by inserting the front and rear groups of threaded blocks 69 into the mounting holes of the top plate 2 and the left and right groups of plug blocks 64 into the plug holes of the top plate 2, the protective structure 6 can be installed on the top plate 2, and the front and rear groups of mounting rods 66 and electric push rods 67 are rotated in turn so that the mounting rods 66 and the electric push rods 67 are installed on the top plate 2, so that the protective structure 6 can be installed on the top of the top plate 2, and the guardrail 61 is driven upward by the front and rear two electric push rods 67, so that the height of the position of the guardrail 61 can be adjusted according to the height of the construction workers, so that the safety of the construction workers at the top of the top plate 2 can be further guaranteed when the height of the top plate 2 is adjusted.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0060] 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 high pier column automatic lifting construction platform, comprising a pier column (1), characterized in that: The upper and lower ends of the outer surface of the pier column (1) are respectively sleeved with a top plate (2) and a bottom plate (3); two mounting plates (4) are fixed to the left and right sides of the bottom plate (3); a plurality of lifting plates (5) are arranged between the top plate (2) and the bottom plate (3); a lifting structure is arranged inside the plurality of lifting plates (5); and a protective structure (6) is arranged at the top end of the top plate (2); The lifting structure comprises two first lifting rods (51) hingedly connected to the left and right ends of the lower ends of the top plate (2) and the plurality of lifting plates (5); the other ends of the first lifting rods (51) are hingedly connected to a moving block (52); the internal threads of the two moving blocks (52) on the same side are connected to a screw rod (53); the outer surfaces of the front and rear screw rods (53) are both fixed with two worm gears (54); the lifting structure also comprises a rotating structure arranged in the inner cavities of the plurality of lifting plates (5) and the bottom plate (3); and the lifting structure also comprises an auxiliary supporting structure arranged at the lower ends of the plurality of lifting plates (5) and the top plate (2).

2. The automatic lifting construction platform for high pier columns according to claim 1 is characterized by: The top ends of the bottom plate (3) and the plurality of lifting plates (5) are each provided with two sliding holes (59) for the moving block (52) to penetrate and slide inside.

3. The high pier column automatic lifting construction platform according to claim 1 is characterized by: The front and rear two screw rods (53) are double-axis screw rods, and the opposite walls of the left and right moving blocks (52) are each provided with a threaded hole for the screw rods (53) to pass through.

4. The high pier column automatic lifting construction platform according to claim 1 is characterized by: The rotating structure comprises two worm gears (55) rotatably connected to the front and rear walls of the inner cavity of the plurality of lifting plates (5) and the bottom plate (3) via bearings, and the rotating structure also comprises a motor (56) fixed to the rear wall of the inner cavity of the plurality of lifting plates (5) and the bottom plate (3), a gear (57) being fixed to the output end of the motor (56) and the outer surface of the right worm gear (55), and a transmission structure (58) being provided on the outer surfaces of the two worm gears (55).

5. The high pier column automatic lifting construction platform according to claim 1 is characterized by: The auxiliary support structure comprises two second lifting rods (511) hingedly connected to the left and right sides of the lower ends of the top plate (2) and the plurality of lifting plates (5); the other ends of the second lifting rods (511) are hingedly connected to a slider (512); and the auxiliary support structure further comprises two slide grooves (510) provided at the top ends of the plurality of lifting plates (5) and the bottom plate (3).

6. The high pier column automatic lifting construction platform according to claim 5 is characterized by: The slide groove (510) is a T-shaped slide rail, the slider (512) is located in the T shape, and the slider (512) is slidably connected to the inside of the slide groove (510).

7. The high pier column automatic lifting construction platform according to claim 1 is characterized by: The protection structure (6) comprises a protection fence (61), wherein sliding rods (62) are fixed at both left and right ends of the lower end of the protection fence (61), a sleeve rod (63) is slidably connected to the outer surface of the sliding rod (62), an insert block (64) is fixed to the bottom of the sleeve rod (63), a plurality of telescopic rods (65) are arranged on both front and rear sides of the lower end of the protection fence (61), a mounting rod (66) is slidably connected to the outer surface of the telescopic rod (65), an electric push rod (67) is arranged at both front and rear ends of the lower end of the protection fence (61), a T-shaped round block (68) is fixed to the top ends of the front and rear two groups of telescopic rods (65) and the output ends of the two electric push rods (67), and a threaded block (69) is fixed to the bottom ends of the front and rear two groups of mounting rods (66) and the bottom ends of the two electric push rods (67).

8. The automatic lifting construction platform for high pier columns according to claim 7, characterized in that: A plurality of plug-in holes are provided at both left and right ends of the top end of the top plate (2), and the plug-in blocks (64) are plugged into the inside of the plug-in holes.

9. The automatic lifting construction platform for high pier columns according to claim 7, characterized in that: A plurality of mounting holes are provided on both the front and rear sides of the top end of the top plate (2), and the threaded block (69) is threadedly connected to the inside of the mounting holes.

10. A method for using the automatic lifting construction platform for high pier columns according to any one of claims 1 to 9, comprising the following steps: S1. Construction personnel put the bottom plate (3), a plurality of lifting plates (5) and the top plate (2) on the pier construction site, and install the protective structure (6) on the top of the top plate (2). The front and rear two sets of threaded blocks (69) are inserted into the threaded holes of the top plate (2) and rotated, so that the front and rear two sets of mounting rods (66) and the front and rear two electric push rods (67) are installed on the top of the top plate (2); S2, the plug-in blocks of the left and right sets of rods (63) are plugged into the plug-in holes of the top plate (2), and the installation of the protective structure (6) is completed, so that the construction personnel can climb on the top plate (2) and control the two electric push rods (67) to work, and the front and rear electric push rods (67) drive the guardrail (61) to move upward, thereby protecting the construction personnel; S3, when the construction workers are working on the top plate (2), the motor (56) drives the worm (55) to rotate through the gear (57), and the worm (55) drives the front and rear screws (53) to rotate through the two worm wheels (54); S4, the two left and right screw rods 53) drive the two left and right moving blocks (52) to move in opposite directions, and the two left and right moving blocks (52) can drive the two left and right first lifting rods (51) to move in opposite directions, so that the first lifting rods (51) gradually become vertical, and the two left and right first lifting rods (51) push the top plate (2) to move upward; S5, through S4, the height of the top plate (2) can be adjusted, that is, the height of the top plate (2) can be adjusted according to the construction height of the pier, and the staff does not need to repeatedly move up and down; S6. When the construction height adjusted by S5 is relatively low, steps S3 and S4 are repeated to make the two groups of first lifting rods (51) connected by the plurality of lifting plates 5 work so as to be able to change the position height of the top plate (2) multiple times.

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