Truss hoisting method

Abstract

The present invention discloses a truss hoisting method, comprising the following steps: S1, hoisting the truss by a crane and placing it on a hoisting device; S2, driving the truss to rise by the hoisting device until the truss rises to the same horizontal height as the truss to be spliced, and then stopping the rise of the truss; S3, then adjusting the position of the splicing end of the truss by the hoisting device. The present invention can realize the hoisting and splicing of the truss. During the whole hoisting and splicing process, it is convenient to quickly adjust the position of the truss docking end, so that the docking requirements of the truss can be met, and at the same time as the docking, the dust and impurities that are vibrated and dropped by the truss when the two trusses are docked and collided can be collected, so that the dust and impurities can slide down along the collection guide plate into the collection box, which can prevent the impurities and dust from falling and causing harm to the staff observing below, and can collect the scattered dust, thereby improving the collection effect of dust and impurities.

Description

Technical Field

[0001] The invention belongs to the technical field of truss hoisting, and in particular relates to a truss hoisting method. Background Art

[0002] Truss: A structure made of rods connected to each other at both ends with hinges. A truss is a plane or space structure composed of straight rods, generally with triangular units. Truss rods mainly bear axial tension or pressure, so as to make full use of the strength of the material. When the span is large, it can save materials, reduce deadweight and increase rigidity compared to solid beams.

[0003] When a large truss is being hoisted, it is split into multiple units, and the multiple units are hoisted and spliced ​​one by one, which can reduce the difficulty of hoisting and splicing the truss. The existing hoisting and splicing is to lift the split truss by a crane to the same height as the fixed truss, and then adjust the position of the truss to align the splicing ends between the truss and the fixed truss, and then manually splice and fix it. This process has high operating requirements for the crane operator, and it is inconvenient to adjust the position of the truss during the whole process, and the adjustment is difficult.

[0004] Therefore, it is necessary to invent a truss hoisting method to solve the above problems. Summary of the invention

[0005] In view of the above problems, the present invention provides a truss hoisting method to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a truss hoisting method, comprising the following steps:

[0007] S1. Lift the truss by crane and place it on the lifting device;

[0008] S2, driving the truss to rise by means of the hoisting device until the truss rises to the same level as the truss to be spliced, and then stopping the rise of the truss;

[0009] S3, then adjusting the position of the splicing end of the truss by means of the hoisting device until the truss on the hoisting device is aligned with the splicing end of the truss to be spliced;

[0010] S4, moving the truss by means of a lifting device so that it contacts the splicing end of the truss to be spliced;

[0011] S5. Then, the splicing ends of the pair of trusses are manually spliced.

[0012] The top of the lifting board is provided with a lifting power of 4000 tons, and the lifting power is 4000 tons.

[0013] Furthermore, the adjustment component includes a first motor, a groove is provided at the bottom of the carrier plate and directly below the mounting plate, the first motor is fixedly installed in the groove, an opening connected to the arc groove is provided at the bottom of the carrier plate, the size of the opening is smaller than the size of the arc groove, and the output shaft of the first motor is fixedly connected to the bottom of the movable plate through a connecting plate.

[0014] Furthermore, the clamping assembly includes a second cylinder symmetrically fixedly installed on the outside of the placement rack, and the cylinder rod of the second cylinder extends into the placement rack and is fixedly connected to a clamping plate.

[0015] Furthermore, the collecting component includes a pair of electric push rods, and mounting grooves are symmetrically opened on the front side of the placement rack above the mounting plate. The pair of electric push rods are respectively fixedly installed in the pair of mounting grooves, and a positioning plate is fixedly installed at the front end of the telescopic ends of the two electric push rods. The top of the positioning plate is flush with the bottom wall of the placement rack, and a collecting guide plate is fixedly installed at the bottom of the positioning plate. A strap is fixedly installed on the lower front side of the column, and a collection box is provided on the top of the strap, and an adsorption component is provided on the top of the strap for collecting scattered dust in cooperation with the collecting guide.

[0016] Furthermore, the collecting guide is specifically configured as an arc-shaped plate-like component, the material of the collecting guide is scratch-resistant organic glass, the collecting guide is tilted, and one end of the collecting guide away from the positioning plate corresponds to the position of the collecting box.

[0017] Furthermore, the adsorption assembly includes a cylinder body fixedly connected to the top of the strap, a piston is provided inside the cylinder body, an extrusion assembly is provided on the top of the piston and cooperates with the collecting guide plate to drive the piston to move up and down, a tube body connected to the interior of the cylinder body is fixedly installed at the bottom of the cylinder body, a filter bag is connected to the bottom of the tube body, a cavity is provided inside the collecting guide plate, an air hole connected to the cavity is provided on the top of the collecting guide plate, the cylinder body is connected to the cavity through a hose, and a one-way valve is provided in the air hole and the tube body.

[0018] Furthermore, the extrusion assembly includes a pressure rod fixedly mounted on the top of the piston, the top of the pressure rod extends to the outside of the cylinder and is fixedly connected to a pressure plate, and a spring is sleeved on the outside of the pressure rod.

[0019] Furthermore, the lifting assembly includes a vertical plate symmetrically fixedly installed on the top of the base plate, a movable groove is opened on the inner side of the vertical plate, a screw rod is rotatably installed in the movable groove, the external thread sleeve of the screw rod is provided with a movable block, the bottom of the screw rod extends to the bottom of the base plate and is fixedly connected to a pulley, the two pulleys are connected by belts, a second motor is fixedly installed on the bottom of the base plate through an L-shaped plate, the top of the output shaft of the second motor is fixedly connected to the middle of the bottom end of the adjacent pulley, and the movable block is fixedly connected to the carrier plate.

[0020] Technical effects and advantages of the present invention:

[0021] 1. The present invention can realize the hoisting and splicing of trusses. During the whole hoisting and splicing process, the position of the butt joint end of the truss can be adjusted quickly to meet the butt joint requirements of the truss;

[0022] 2. The present invention can collect dust and impurities that are dropped by the vibration of the trusses when the two trusses are butted together, so that the dust and impurities can slide down along the collection guide plate into the collection box, thereby preventing the impurities and dust from falling and causing harm to the staff observing below, and can collect the scattered dust, thereby improving the collection effect of dust and impurities;

[0023] The present invention can realize the hoisting and splicing of trusses. During the whole hoisting and splicing process, the position of the butt joint end of the truss can be adjusted quickly to meet the butt joint requirements of the trusses. At the same time, the dust and impurities dropped by the trusses due to vibration when the two trusses butt against each other can be collected, so that the dust and impurities can slide down along the collection guide plate into the collection box, which can prevent the impurities and dust from falling and causing harm to the staff observing below, and can collect the scattered dust, thereby improving the collection effect of dust and impurities.

[0024] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic structural diagram of a hoisting device according to an embodiment of the present invention is shown;

[0027] Figure 2 A schematic diagram showing a partial structure of an embodiment of the present invention Figure 1 ;

[0028] Figure 3 The embodiment of the present invention is shown Figure 2 The enlarged structural diagram at A in the middle;

[0029] Figure 4 A schematic diagram showing a partial structure of an embodiment of the present invention Figure 2 ;

[0030] Figure 5 A schematic diagram of the structure of a lifting assembly according to an embodiment of the present invention is shown;

[0031] In the figure: 1, bottom plate; 2, carrier plate; 3, enclosure plate; 4, mounting plate; 5, slider; 6, first cylinder; 7, column; 8, movable plate; 9, placement rack; 10, first motor; 11, connecting plate; 12, second cylinder; 13, clamping plate; 14, electric push rod; 15, positioning plate; 16, collecting guide plate; 17, bridging plate; 18, collecting box; 19, cylinder body; 20, piston; 21, filter bag; 22, air hole; 23, hose; 24, pressure rod; 25, spring; 26, pressure plate; 27, vertical plate; 28, screw rod; 29, moving block; 30, second motor. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0033] The present invention provides a truss hoisting method, comprising the following steps:

[0034] S1. Lift the truss by crane and place it on the lifting device;

[0035] S2, driving the truss to rise by means of the hoisting device until the truss rises to the same level as the truss to be spliced, and then stopping the rise of the truss;

[0036] S3, then adjusting the position of the splicing end of the truss by means of the hoisting device until the truss on the hoisting device is aligned with the splicing end of the truss to be spliced;

[0037] S4, moving the truss by means of a lifting device so that it contacts the splicing end of the truss to be spliced;

[0038] S5. Then, the splicing ends of the pair of trusses are manually spliced.

[0039] like Figure 1-5As shown, the lifting device includes a base plate 1, a moving wheel is provided at the bottom of the base plate 1, and the moving wheel has a locking function. A lifting assembly is provided on the top of the base plate 1, and a carrier plate 2 is connected to the lifting assembly. A surrounding plate 3 is fixedly installed on the top of the carrier plate 2, and a door body is provided on one side of the surrounding plate 3. A mounting plate 4 is rotatably installed on the top of the carrier plate 2, and a slide groove is provided on the top of the mounting plate 4, and a slider 5 is slidably installed in the slide groove. A first cylinder 6 is fixedly installed on the outer side of the mounting plate 4, and one end of the cylinder rod of the first cylinder 6 close to the slider 5 extends into the slide groove and is fixedly connected to the slider 5. A column 7 is fixedly installed on the middle part of the top of the slider 5, and an arc groove is provided on the top of the carrier plate 2, and a movable plate 8 is slidably installed in the arc groove. 8 and the top of the column 7 are fixedly installed with a placing frame 9, the outside of the placing frame 9 is provided with a clamping assembly for clamping the truss, the bottom of the carrier plate 2 is provided with an adjusting assembly for driving the movable plate 8 to swing and adjust, and the front side of the placing frame 9 above the mounting plate 4 is provided with a collecting assembly for collecting dust and impurities generated when the trusses are docked. When in use, the truss is placed on a pair of placing frames 9 through a crane, and the truss is clamped and fixed by the clamping assembly. Then the staff enters the enclosure 3, and drives the carrier plate 2 and the staff above and the truss to rise through the lifting assembly. When the truss rises to the same horizontal height as the truss to be spliced, the movement of the lifting assembly is stopped at this time, so that the truss stops moving. The movable plate 8 is then driven to move along the arc groove through the adjusting component, so that the connected placement frame 9 is moved accordingly, and then one end of the fixed truss is driven to move accordingly, so that the other end of the truss drives the placement frame 9, the column 7, the slider 5 and the mounting plate 4 to rotate, so that the entire truss is adjusted in position with the mounting plate 4 as the rotation center, so that the direction of the end of the truss to be spliced ​​is adjusted until the end of the truss to be spliced ​​is aligned with one end of the other fixed truss, the adjustment of the truss is stopped, and then the clamping component located above the movable plate 8 cancels the fixation of the truss, and then the first cylinder 6 is started to extend its cylinder rod to drive the slider 5 to move, thereby driving the column 7, the placement frame 9 It moves accordingly, and then cooperates with the clamping assembly to drive the truss to move. The staff observes on the carrier plate 2. When the truss collides with one end of the fixed truss, the movement of the cylinder rod of the first cylinder 6 is stopped, so that the position of the truss stops moving. Then the two trusses are connected manually. While the trusses are colliding, there will be shaking between the two trusses, so that the dust and impurities on the trusses will be shaken off. At this time, the dust and impurities are collected by the collecting assembly, so that the dust and impurities will not cause harm to the staff observing below. At this point, the adjustment and splicing of the lifting angle of the truss are completed, which makes it easier to splice the two trusses and improves the speed of truss connection.

[0040] like Figure 4As shown, the adjustment component includes a first motor 10, a groove is opened at the bottom of the carrier plate 2 and directly below the mounting plate 4, the first motor 10 is fixedly installed in the groove, an opening connected to the arc groove is opened at the bottom of the carrier plate 2, the opening size is smaller than the arc groove size, the output shaft of the first motor 10 is fixedly connected to the bottom of the movable plate 8 through the connecting plate 11, and the first motor 10 is started to make its output shaft rotate forward or reversely to drive the movable plate 8 and the placement frame 9 above to move through the connecting plate 11, so that the movable plate 8 moves along the arc groove, so that the placement frame 9 is driven to cooperate with the clamping component to adjust the position of one end of the truss.

[0041] like Figure 1 As shown, the clamping assembly includes a second cylinder 12 symmetrically fixedly installed on the outside of the placement frame 9, the cylinder rod of the second cylinder 12 extends into the placement frame 9 and is fixedly connected to a clamp plate 13. When the second cylinder 12 is started, its cylinder rod is extended to drive the clamp plate 13 to move accordingly, so that a pair of clamp plates 13 can clamp and fix the truss. Conversely, the second cylinder 12 can be started to shorten its cylinder rod, thereby canceling the fixation of the truss.

[0042] like Figure 1-3 As shown, the collecting assembly includes a pair of electric push rods 14, and mounting grooves are symmetrically provided on the front side of the placing rack 9 above the mounting plate 4. The pair of electric push rods 14 are fixedly installed in the pair of mounting grooves respectively. The front ends of the telescopic ends of the two electric push rods 14 are fixedly installed with a positioning plate 15. The top of the positioning plate 15 is flush with the bottom wall of the placing rack 9. A collecting guide plate 16 is fixedly installed at the bottom of the positioning plate 15. A strap plate 17 is fixedly installed at the lower front part of the column 7. A collecting box 18 is provided on the top of the strap plate 17. An adsorption assembly for collecting scattered dust in cooperation with the collecting guide plate 16 is provided on the top of the strap plate 17. The electric push rod 14 can be started to extend its telescopic end to drive the positioning The plate 15 and the collecting guide plate 16 move accordingly. The extended positioning plate 15 allows the positioning plate 15 to contact the bottom of the installed truss when the placement frame 9 and the truss rise, so that the truss can be positioned in the vertical direction, so that the truss to be spliced ​​is at the same height as the truss that has been installed and fixed, which is convenient for rapid adjustment of the truss in the vertical direction. The extended collecting guide plate 16 can collect dust and impurities that fall from the truss when the two trusses are butted and contacted, so that the dust and impurities can slide down along the collecting guide plate 16 into the collecting box 18, which can prevent the impurities and dust from falling and causing harm to the staff observing below.

[0043] like Figure 3As shown, the collecting guide plate 16 is specifically configured as an arc-shaped plate-like component. The material of the collecting guide plate 16 is scratch-resistant organic glass, which makes it convenient for the staff below to observe the docking condition of the upper truss. The collecting guide plate 16 is tilted, and the end of the collecting guide plate 16 away from the positioning plate 15 corresponds to the position of the collecting box 18. The fallen impurities can slide along the collecting guide plate 16 into the collecting box 18.

[0044] like Figure 3 As shown, the adsorption assembly includes a cylinder body 19 fixedly connected to the top of the strap 17, a piston 20 is arranged inside the cylinder body 19, and an extrusion assembly is arranged on the top of the piston 20 for driving the piston 20 to move up and down in cooperation with the collecting guide plate 16, a pipe body connected to the inside of the cylinder body 19 is fixedly installed at the bottom, a filter bag 21 is connected to the bottom of the pipe body, and the filter bag 21 is tied and connected to the bottom of the pipe body, and the filter bag 21 can be removed to clean the dust inside, a cavity is opened inside the collecting guide plate 16, and an air hole 22 connected to the cavity is opened on the top of the collecting guide plate 16, the cylinder body 19 is connected to the cavity through a hose 23, and a one-way valve is arranged in the air hole 22 and the pipe body, the telescopic end of the electric push rod 14 is extended to drive the positioning plate 15 and the collecting guide plate 16 to move, and the collecting guide plate 16 cooperates with the extrusion assembly to squeeze the piston 20, so that it descends and moves the inside of the cylinder body 19 The air and dust in the cylinder 19 are discharged outwardly. At this time, the one-way valve in the air hole 22 is closed, and the one-way valve in the tube body is opened. As the collecting guide plate 16 continues to move, the piston 20 is continuously squeezed to make it descend, so that the air and dust in the cylinder 19 are continuously squeezed outward, so that the air and dust enter the filter bag 21 through the tube body, so that the air is discharged and the dust remains in the filter bag 21. When the electric push rod 14 is shortened, the collecting guide plate 16 can be reset. As the collecting guide plate 16 is reset, the cooperating extrusion assembly drives the piston 20 to rise, so that air is pumped into the cylinder 19. At this time, the one-way valve in the air hole 22 is opened, and the one-way valve in the tube body is closed. Dust impurities fall on the collecting guide plate 16. The scattered dust will be sucked into the cylinder 19 through the air hole 22 and the hose 23, completing the collection of the scattered dust and preventing the dust from escaping.

[0045] like Figure 3 As shown, the extrusion assembly includes a pressure rod 24 fixedly mounted on the top of the piston 20, the top of the pressure rod 24 extends to the outside of the cylinder body 19 and is fixedly connected to a pressure plate 26, the outer sleeve of the pressure rod 24 is provided with a spring 25, the telescopic end of the electric push rod 14 extends to drive the positioning plate 15 and the collecting guide plate 16 to move accordingly, so that the collecting guide plate 16 continuously squeezes the pressure plate 26 to drive the pressure rod 24 and the piston 20 to descend, and at the same time, the pressure plate 26 compresses the spring 25 to deform it to generate a force, when the collecting guide plate 16 is reset, the spring 25 releases the force to drive the pressure plate 26, the pressure rod 24 and the piston 20 to rise and reset.

[0046] like Figure 5As shown, the lifting assembly includes a vertical plate 27 symmetrically fixedly installed on the top of the base plate 1, a moving groove is opened on the inner side of the vertical plate 27, a screw rod 28 is rotatably installed in the moving groove, a moving block 29 is provided on the external threaded sleeve of the screw rod 28, the bottom of the screw rod 28 extends to the bottom of the base plate 1 and is fixedly connected to a pulley, the two pulleys are connected by a belt, a second motor 30 is fixedly installed on the bottom of the base plate 1 through an L-shaped plate, the top of the output shaft of the second motor 30 is fixedly connected to the middle of the bottom end of the adjacent pulley, the moving block 29 is fixedly connected to the carrier plate 2, the second motor 30 is started to make its output shaft rotate forward to drive the connected pulley to rotate, thereby driving another pulley to rotate through the belt, and then driving a pair of screw rods 28 to rotate, so that the moving block 29 and the carrier plate 2 are driven to rise, conversely, the second motor 30 is started to make its output shaft reverse, so that the moving block 29 and the carrier plate 2 can be lowered.

[0047] Working principle:

[0048] S1. Lift the truss by crane and place it on the lifting device;

[0049] S2, driving the truss to rise by means of the hoisting device until the truss rises to the same level as the truss to be spliced, and then stopping the rise of the truss;

[0050] S3, then adjusting the position of the splicing end of the truss by means of the hoisting device until the truss on the hoisting device is aligned with the splicing end of the truss to be spliced;

[0051] S4, moving the truss by means of a lifting device so that it contacts the splicing end of the truss to be spliced;

[0052] S5. Then, the splicing ends of the pair of trusses are manually spliced.

[0053] When in use, the truss is placed on a pair of placement frames 9 through a crane, and the second cylinder 12 is started to extend its cylinder rod to drive the clamping plate 13 to move accordingly, so that the pair of clamping plates 13 can clamp and fix the truss. Then the staff enters the enclosure 3, and the second motor 30 is started to rotate its output shaft forward to drive the connected pulley to rotate, thereby driving another pulley to rotate through the belt, and then driving a pair of screw rods 28 to rotate, so that the moving block 29, the carrier plate 2, the staff above and the truss are driven to rise, and the electric push rod 14 can be started to extend its telescopic end to drive the positioning plate 15 and the collecting guide plate 16 to move accordingly, and the extended positioning plate 15 can make the positioning plate 15 contact with the bottom of the installed truss when the placement frame 9 and the truss rise. The truss can be positioned in the vertical direction so that the truss to be spliced ​​is at the same height as the truss that has been installed and fixed, which is convenient for quickly adjusting the truss in the vertical direction. When the hoisted truss is at the same height as the fixed truss, the second motor 30 is turned off to stop the movement of the truss, and the first motor 10 is started to rotate its output shaft in the forward or reverse direction to drive the movable plate 8 and the upper placement frame 9 to move through the connecting plate 11, so that the movable plate 8 moves along the arc groove, so that the placement frame 9 is driven to cooperate with the clamping plate 13 to adjust the position of one end of the truss, so that the other end of the truss drives the placement frame 9, the column 7, the slider 5 and the mounting plate 4 to rotate, so that the entire truss is adjusted in position with the mounting plate 4 as the rotation center until the hoisted truss to be spliced ​​is The frame is aligned with the splicing end of the fixed truss, and then the adjustment of the truss is stopped, and then the second cylinder 12 is started to shorten its cylinder rod to separate the clamping plate 13 located above the movable plate 8 from the truss, and then the first cylinder 6 is started to extend its cylinder rod to drive the slider 5 to move, thereby driving the column 7 and the placement frame 9 to move accordingly, and then cooperating with the clamping plate 13 to drive the truss to move. The staff observes on the carrier plate 2. When the truss collides with one end of the fixed truss, the movement of the cylinder rod of the first cylinder 6 is stopped, so that the position of the truss stops moving. At the same time as the trusses collide, there will be shaking between the two trusses, so that the dust and impurities on the trusses are shaken off, and the collection guide plate 16 is extended to make the trusses produced when the two trusses are butt-jointed and collided. The dust and impurities that fall due to vibration are collected, so that the dust and impurities can slide down the collection guide plate 16 into the collection box 18, which can prevent the impurities and dust from falling and causing harm to the staff observing below. When the telescopic end of the electric push rod 14 is extended, the positioning plate 15 and the collection guide plate 16 are driven to move accordingly, so that the collection guide plate 16 continuously squeezes the pressure plate 26 to drive the pressure rod 24 and the piston 20 to descend. At the same time, the pressure plate 26 compresses the spring 25 to deform it and generate a force to make it descend to discharge the air and dust inside the cylinder body 19 outward. At this time, the one-way valve in the air hole 22 is closed, and the one-way valve in the tube body is opened. As the collection guide plate 16 continues to move, it continuously squeezes the piston 20 to make it descend, so that the air and dust inside the cylinder body 19 are continuously squeezed outward.The air and dust are allowed to enter the filter bag 21 through the pipe body, and the air is discharged, and the dust remains in the filter bag 21. When the docking is completed, the electric push rod 14 is started to shorten it to realize the reset of the collection guide plate 16. With the reset of the collection guide plate 16, the spring 25 releases the force to drive the pressure plate 26, the pressure rod 24 and the piston 20 to rise and reset, so that air is pumped into the cylinder 19. At this time, the one-way valve located in the air hole 22 is opened, and the one-way valve in the pipe body is closed. The dust impurities fall on the collection guide plate 16. The scattered dust will be sucked into the cylinder 19 through the air hole 22 and the hose 23, completing the collection of the scattered dust and preventing the dust from escaping. When the positioning plate 15 is reset, the connection between the two trusses can be manually performed. At this time, the adjustment and splicing of the hoisting angle of the truss are completed, making it easier to splice the two trusses and improving the speed of truss connection.

[0054] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A truss hoisting method, characterized in that: The steps include: S1. Lift the truss by crane and place it on the lifting device; S2, driving the truss to rise by means of the hoisting device until the truss rises to the same level as the truss to be spliced, and then stopping the rise of the truss; S3, then adjusting the position of the splicing end of the truss by means of the hoisting device until the truss on the hoisting device is aligned with the splicing end of the truss to be spliced; S4, moving the truss by means of a lifting device so that it contacts the splicing end of the truss to be spliced; S5, then manually performing a splicing operation on the splicing ends of the pair of trusses; The lifting device comprises a base plate (1), a lifting assembly is provided on the top of the base plate (1), a carrier plate (2) is connected to the lifting assembly, a shroud (3) is fixedly installed on the top of the carrier plate (2), a door body is provided on one side of the shroud (3), a mounting plate (4) is rotatably installed on the top of the carrier plate (2), a slide groove is provided on the top of the mounting plate (4), a slider (5) is slidably installed in the slide groove, a first cylinder (6) is fixedly installed on the outer side of the mounting plate (4), and an end of a cylinder rod of the first cylinder (6) close to the slider (5) extends into the slide groove and is in contact with the slider (5). The slider (5) is fixedly connected, a column (7) is fixedly installed in the middle of the top end, an arc-shaped groove is opened on the top of the carrier plate (2), a movable plate (8) is slidably installed in the arc-shaped groove, a placement frame (9) is fixedly installed on the top of the movable plate (8) and the column (7), a clamping component for clamping the truss is provided on the outside of the placement frame (9), an adjustment component for driving the movable plate (8) to swing and adjust is provided at the bottom of the carrier plate (2), and a collection component for collecting dust and impurities generated when the trusses are connected is provided on the front side of the placement frame (9) above the mounting plate (4); The collecting assembly comprises a pair of electric push rods (14), the front side of the placement rack (9) located above the mounting plate (4) is symmetrically provided with mounting grooves, the pair of electric push rods (14) are respectively fixedly installed in the pair of mounting grooves, the front ends of the telescopic ends of the two electric push rods (14) are commonly fixedly installed with a positioning plate (15), the top of the positioning plate (15) is flush with the bottom wall of the placement rack (9), the bottom of the positioning plate (15) is fixedly installed with a collecting guide plate (16), the front lower part of the column (7) is fixedly installed with a strap plate (17), the top of the strap plate (17) is provided with a collecting box (18), and the top of the strap plate (17) is provided with an adsorption assembly for collecting scattered dust in cooperation with the collecting guide plate (16).

2. The truss hoisting method according to claim 1, characterized in that: The adjustment assembly comprises a first motor (10), a groove is provided at the bottom of the carrier plate (2) and directly below the mounting plate (4), the first motor (10) is fixedly installed in the groove, an opening is provided at the bottom of the carrier plate (2) and is connected to the arc groove, and the size of the opening is smaller than the size of the arc groove, and the output shaft of the first motor (10) is fixedly connected to the bottom of the movable plate (8) through a connecting plate (11).

3. The truss hoisting method according to claim 1, characterized in that: The clamping assembly comprises a second cylinder (12) symmetrically fixedly mounted on the outside of the placement rack (9); a cylinder rod of the second cylinder (12) extends into the placement rack (9) and is fixedly connected to a clamping plate (13).

4. The truss hoisting method according to claim 1, characterized in that: The collecting guide plate (16) is specifically configured as an arc-shaped plate-shaped component. The material of the collecting guide plate (16) is scratch-resistant organic glass. The collecting guide plate (16) is configured to be inclined. The end of the collecting guide plate (16) away from the positioning plate (15) corresponds to the position of the collecting box (18).

5. The truss hoisting method according to claim 1, characterized in that: The adsorption assembly comprises a cylinder body (19) fixedly connected to the top of the strap (17); a piston (20) is arranged inside the cylinder body (19); a squeezing assembly cooperating with the collecting guide plate (16) for driving the piston (20) to move up and down is arranged on the top of the piston (20); a pipe body connected to the inside of the cylinder body (19) is fixedly installed at the bottom of the cylinder body (19); a filter bag (21) is connected to the bottom of the pipe body; a cavity is provided inside the collecting guide plate (16); an air hole (22) connected to the cavity is provided on the top of the collecting guide plate (16); the cylinder body (19) is connected to the cavity through a hose (23); and a one-way valve is arranged in the air hole (22) and the pipe body.

6. The truss hoisting method according to claim 5, characterized in that: The extrusion assembly comprises a pressure rod (24) fixedly mounted on the top of the piston (20), the top of the pressure rod (24) extending to the outside of the cylinder body (19) and fixedly connected to a pressure plate (26), and the outside of the pressure rod (24) is sleeved with a spring (25).

7. The truss hoisting method according to claim 1, characterized in that: The lifting assembly comprises a vertical plate (27) symmetrically fixedly mounted on the top of the base plate (1), a movable groove is opened on the inner side of the vertical plate (27), a screw rod (28) is rotatably mounted in the movable groove, a movable block (29) is provided on the external thread sleeve of the screw rod (28), the bottom of the screw rod (28) extends to the bottom of the base plate (1) and is fixedly connected to a pulley, the two pulleys are connected by a belt, a second motor (30) is fixedly mounted on the bottom of the base plate (1) through an L-shaped plate, the top of the output shaft of the second motor (30) is fixedly connected to the middle of the bottom end of the adjacent pulley, and the movable block (29) is fixedly connected to the carrier plate (2).

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