Hoisting device for assembly of prefabricated steel structure frame

Abstract

The present invention relates to the technical field of hoisting devices. Provided is a hoisting device for assembly of a prefabricated steel structure frame. The hoisting device for assembly of a prefabricated steel structure frame comprises a fixing plate; guide frames are fixedly connected to two sides of the top of the fixing plate; synchronous belts are sleeved on the outer sides of the two guide frames; synchronous wheels are rotatably connected to the interiors of the two synchronous belts at two ends thereof; a plurality of partition plates distributed in an array are fixedly connected to the outer sides of the two synchronous belts; a plurality of mounting bolts are provided inside the two guide frames; electric push rods are fixedly connected to two sides of the top of the fixing plate; push plates are fixedly connected to output ends of the two electric push rods; and toothed plates are fixedly connected to upper and lower ends of two sides of each of the two push plates. In the hoisting device for assembly of a prefabricated steel structure frame, a steel structure is directly mounted during hoisting, eliminating the need for an operator to climb to a high place for mounting, thereby increasing safety, greatly reducing intermediate mounting steps and operations, and improving mounting efficiency.

Description

A prefabricated steel structure frame erection and hoisting device Technical Field

[0001] This invention relates to a hoisting device, specifically a hoisting device for assembling prefabricated steel structure frames, and belongs to the technical field of hoisting devices. Background Technology

[0002] Steel structures are structures made of steel materials and are one of the main types of building structures. The structure mainly consists of steel beams, steel columns, steel trusses, and other components made of shaped steel and steel plates, and employs rust removal and prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing. The various components or parts are typically connected by welds, bolts, or rivets.

[0003] When installing some steel structures, due to the high installation position of some steel structures, the existing technology requires people to climb up the scaffolding to install the steel structure frame and then use various tools to install bolts on the steel structure frame. However, working at height is very dangerous. Not only is there a risk of falling, but during installation, the steel structure also needs to be stabilized manually. The bolt installation requires multiple steps, which is not only inefficient but also dangerous. Summary of the Invention

[0004] Technical problems to be solved

[0005] The purpose of this invention is to provide a prefabricated steel structure frame erection and hoisting device to solve the above-mentioned problems. This addresses the issues of the dangers of working at heights in the prior art, which not only pose a risk of falling but also require manual stabilization of the steel structure during installation and multiple steps during bolt installation, resulting in low efficiency and certain risks. Technical solution

[0006] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated steel structure frame erection and hoisting device, comprising a fixed plate, guide frames fixedly connected to both sides of the top of the fixed plate, synchronous belts sleeved on the outer sides of the two guide frames, synchronous pulleys rotatably connected to both ends of the two synchronous belts, multiple partitions fixedly connected in an array on the outer sides of the two synchronous belts, multiple mounting bolts provided inside the two guide frames, the multiple mounting bolts being respectively disposed between the multiple partitions, electric push rods fixedly connected to both sides of the top of the fixed plate, push plates fixedly connected to the output ends of the two electric push rods, toothed plates fixedly connected to the upper and lower ends of both sides of the two push plates, main shafts fixedly connected to both sides of the top of the fixed plate, and swing arms rotatably connected to the upper and lower ends of the outer sides of the two main shafts.

[0007] Preferably, each of the four swing arms has a half gear at its rear end, and the four tooth plates are respectively meshed with the four half gears. Each of the four swing arms has a slot at its front end, and the four slots are respectively adapted to multiple mounting bolts, which is beneficial for the swing arm to push the mounting bolts that have moved into the slots to one side and support the mounting bolts.

[0008] Preferably, each end of the fixed plate is fixedly connected to a horizontal plate, the top of each of the two horizontal plates is fixedly connected to a vertical plate, the top of each of the two vertical plates is fixedly connected to a platform, the top of each of the two platform plates is fixedly connected to a fixed sleeve, the top of each of the four fixed sleeves is fixedly connected to a first motor, a rotating sleeve is rotatably connected inside each fixed sleeve, a threaded rod is slidably connected inside each rotating sleeve, and limit sleeves are fixedly connected to both sides inside the platform. The threaded rod passes through the limit sleeve and is threadedly connected to the limit sleeve. The rotating sleeve drives the limit strip to rotate, thereby driving the threaded rod to rotate synchronously and limiting the threaded rod with the limit sleeve, so that the threaded rod descends when rotating. A connecting plate is fixedly connected to the bottom end of the threaded rod, and an installation cutter is fixedly connected to the bottom end of the connecting plate. The installation cutter is adapted to the cross groove on the top of the installation bolt. Limit strips are fixedly connected to both sides inside the rotating sleeve, and limit grooves are opened on both sides of the threaded rod. The two limit strips are slidably connected to the two limit grooves and adapted to the two limit grooves respectively.

[0009] Preferably, the fixed plate has grooves on both sides at both ends, and slide plates are provided on both sides inside the grooves. A retaining plate is fixedly connected to one side of each slide plate. Two slide rods are fixedly connected inside the grooves. The two slide rods pass through the two slide plates and are slidably connected to the two slide plates. The two retaining plates are arranged opposite to each other and cooperate to form a circular groove. The mounting bolt is adapted to the retaining plate, and the mounting cutter head corresponds to the retaining plate. The mounting bolt is supported and limited by the two retaining plates.

[0010] Preferably, a second motor is fixedly connected to both ends of the fixed plate, and the output ends of the four second motors are fixedly connected to four synchronous pulleys respectively. The synchronous pulleys are driven to rotate by starting the second motors, thereby driving the synchronous belt to move.

[0011] Preferably, multiple mounting bolts are slidably connected to the inside of the two guide frames and are adapted to the internal shape of the two guide frames. Horizontal plates are fixedly connected to both ends of the fixing plate, and two vertical plates are fixedly connected to the top of the two horizontal plates. Two hanging ears are fixedly connected to both the front and rear sides of the fixing plate.

[0012] Preferably, limit springs are fixedly connected to both top sides of the fixed plate. The inner top of the limit springs is provided with arc-shaped protrusions. The four limit springs are arranged opposite each other in pairs. The four limit springs are respectively set at both ends of the two synchronous belts. The curvature of the limit springs is adapted to the movement trajectory of the swing arm. The limit springs guide the mounting bolts.

[0013] Preferably, slide rails are fixedly connected to both the front and rear sides of the bottom of the fixed plate. A first lead screw and a second lead screw are rotatably connected inside the two slide rails respectively. A first threaded block and a second threaded block are slidably connected to both sides of the slide rails respectively. The first lead screw passes through the first threaded block and is threadedly connected to the first threaded block. The second lead screw passes through the second threaded block and is threadedly connected to the second threaded block. Another first threaded block is sleeved on the outside of the second lead screw and is movably connected to the second lead screw. Another second threaded block is sleeved on the outside of the first lead screw and is movably connected to the first lead screw. A fourth motor is fixedly connected to one end of each of the two slide rails. The output ends of the two fourth motors are fixedly connected to the first lead screw and the second lead screw respectively. When the first lead screw rotates, it drives the first threaded block to move. When the second lead screw rotates, it drives the second threaded block to move.

[0014] Preferably, the bottom sides of the fixing plate are provided with sliding sleeves, the two sliding sleeves are fixedly connected to the bottom of the two first threaded blocks and the second threaded block respectively, the two sliding sleeves are slidably connected to the inner sides of the two sliding sleeves, and the two locking plates are fixedly connected to the opposite ends of the two locking plates, and the two racks are arranged in opposite directions.

[0015] Preferably, a third motor is fixedly connected to the top of each of the two sliding sleeves. The output ends of both third motors pass through the sliding sleeves and are rotatably connected to them. Guide gears are fixedly connected to the outer sides of the output ends of both third motors. The guide gears mesh with two racks respectively. Starting the third motors drives the guide gears to rotate, thereby causing the two racks to move in opposite directions. This invention provides a prefabricated steel structure frame erection and hoisting device, which has the following beneficial effects:

[0016] This prefabricated steel structure frame erection and hoisting device works by hoisting a fixed plate to the installation position. Once the fixed plate and the steel structure are aligned with the installation position, a second motor is activated, driving a synchronous pulley to rotate. This pulley, in turn, moves a synchronous belt, which in turn moves a partition plate. The partition plate then moves multiple mounting bolts, with the outermost bolt moving to the swing arm and locking into its internal slot. An electric push rod then activates the device, pushing a push plate to move two toothed plates. As the toothed plates move, they rotate a half-gear, which in turn rotates the swing arm. As the swing arm rotates, the mounting bolt moves outward. Simultaneously, a limit spring limits and guides the bolt. An arc-shaped protrusion on the inner side of the limit spring pushes the bolt to the position of the locking plate, causing it to fall into the locking plate. This aligns the bolt with the mounting holes inside the steel structure, facilitating installation.

[0017] This prefabricated steel structure frame hoisting device uses a limiting strip to limit the limiting groove, causing the threaded rod to rotate synchronously. As the threaded rod rotates, it descends simultaneously with the limiting sleeve due to the threaded connection between the threaded rod and the limiting sleeve. The threaded rod slides inside the rotating sleeve, causing the connecting plate and the installation cutter head to rotate. This, in turn, causes the connecting plate and the installation cutter head to descend. As the installation cutter head descends, it aligns with the top of the installation bolt, thus engaging with the cross groove on the top of the bolt. The descending threaded rod pushes the connecting plate, further rotating the installation cutter head, causing it to descend and screw the installation bolt into the installation threaded hole of the steel structure. This allows the steel structure to be installed directly during hoisting, eliminating the need for manual installation at heights, increasing safety, significantly reducing intermediate installation steps, and improving installation efficiency.

[0018] The prefabricated steel structure frame erection hoisting device uses a fourth motor to drive the second lead screw to rotate, which in turn moves the second threaded block. The second threaded block then moves another sliding sleeve, which helps to move one sliding sleeve and shorten the distance between the two sliding sleeves, thus adapting to the installation of steel structures of different sizes. After one end of the steel structure is installed, the hoisting machine moves the fixing plate towards the installed side. At the same time, the two fourth motors start simultaneously, driving the first and second lead screws to rotate synchronously, which in turn moves the first threaded block and the second lead screw, causing the fixing plate and the two sliding sleeves to move relative to each other. This allows the sliding sleeves to move the steel structure to the other end, where the mounting bolts are then installed. This method is suitable for installing structures of different lengths. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a top view of the structure of the present invention;

[0021] Figure 3 is a partial structural schematic diagram of the present invention;

[0022] Figure 4 is a schematic diagram of the guide frame of the present invention;

[0023] Figure 5 is a schematic diagram of the synchronous pulley of the present invention;

[0024] Figure 6 is a schematic diagram of the structure of the partition of the present invention;

[0025] Figure 7 is a schematic diagram of the toothed plate of the present invention;

[0026] Figure 8 is a schematic diagram of the swing arm of the present invention;

[0027] Figure 9 is a schematic diagram of the structure of the platform of the present invention;

[0028] Figure 10 is a schematic diagram of the structure of the fixing sleeve of the present invention;

[0029] Figure 11 is a schematic diagram of the threaded rod of the present invention;

[0030] Figure 12 is a schematic diagram of the structure of the fixing plate of the present invention;

[0031] Figure 13 is a schematic diagram of the structure of the skateboard of the present invention;

[0032] Figure 14 is a schematic diagram of the slide rail of the present invention;

[0033] Figure 15 is a schematic diagram of the structure of the snap-fit ​​plate of the present invention.

[0034] In the diagram: 1. Fixed plate; 2. Guide frame; 3. Synchronous belt; 4. Synchronous pulley; 5. Partition plate; 6. Mounting bolt; 7. Electric push rod; 8. Push plate; 9. Main shaft; 10. Swing arm; 11. Gear plate; 12. Half gear; 13. Vertical plate; 14. Platform; 15. Fixed sleeve; 16. First motor; 17. Rotating sleeve; 18. Threaded rod; 19. Limit sleeve; 20. Limit strip; 21. Limit groove; 22. Connecting plate 23. Install the cutter head; 24. Slide bar; 25. Slide plate; 26. Clamping plate; 27. Limiting spring; 28. Second motor; 29. ​​Horizontal plate; 30. Hanging lug; 31. Slide rail; 3201. First lead screw; 3202. Second lead screw; 3301. First threaded block; 3302. Second threaded block; 34. Sliding sleeve; 35. Clamping plate; 36. Rack; 37. Third motor; 38. Guide gear; 39. Fourth motor. Detailed Implementation

[0035] This invention provides a prefabricated steel structure frame erection and hoisting device.

[0036] Please refer to Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15. The system includes a fixed plate 1, with guide frames 2 fixedly connected to both sides of the top of the fixed plate 1. Synchronous belts 3 are fitted on the outer sides of both guide frames 2. Synchronous pulleys 4 are rotatably connected to both ends of the two synchronous belts 3. Multiple partitions 5 are fixedly connected in an array on the outer sides of both synchronous belts 3. Multiple mounting bolts 6 are provided inside the two guide frames 2 and are respectively located between the multiple partitions 5. Electric push rods 7 are fixedly connected to both sides of the top of the fixed plate 1. Push plates 8 are fixedly connected to the output ends of both electric push rods 7. Toothed plates 11 are fixedly connected to the upper and lower ends of both sides of the two push plates 8. Main shafts 9 are fixedly connected to both sides of the top of the fixed plate 1. Swing arms 10 are rotatably connected to the upper and lower ends of the outer sides of the two main shafts 9.

[0037] Each of the four swing arms 10 has a half gear 12 at its rear end, and the four toothed plates 11 are respectively meshed with the four half gears 12. Each of the four swing arms 10 has a slot at its front end, and the four slots are respectively adapted to multiple mounting bolts 6, which is beneficial to push the mounting bolts 6 that have moved into the slots to one side and support the mounting bolts 6.

[0038] A horizontal plate 29 is fixedly connected to both ends of a fixed plate 1. A vertical plate 13 is fixedly connected to the top of each of the two horizontal plates 29. A platform 14 is fixedly connected to the top of each of the two vertical plates 13. A fixed sleeve 15 is fixedly connected to the top of each of the two platform 14. A first motor 16 is fixedly connected to the top of each of the four fixed sleeves 15. A rotating sleeve 17 is rotatably connected inside each fixed sleeve 15. A threaded rod 18 is slidably connected inside each rotating sleeve 17. Limit sleeves 19 are fixedly connected to both sides inside the platform 14. The threaded rod 18 passes through the limit sleeve 19 and is threadedly connected to the limit sleeve 19. The rotating sleeve 1... 7 drives the limiting strip 20 to rotate, thereby driving the threaded rod 18 to rotate synchronously, and causing the limiting sleeve 19 to limit the threaded rod 18, so that the threaded rod 18 descends when rotating. The bottom end of the threaded rod 18 is fixedly connected to the connecting plate 22, and the bottom end of the connecting plate 22 is fixedly connected to the mounting head 23. The mounting head 23 is adapted to the cross groove on the top of the mounting bolt 6. The rotating sleeve 17 has limiting strips 20 fixedly connected to both sides inside. The threaded rod 18 has limiting grooves 21 on both sides. The two limiting strips 20 are slidably connected to the two limiting grooves 21 and adapted to the two limiting grooves 21 respectively.

[0039] The fixed plate 1 has grooves on both sides at both ends. Slide plates 25 are provided on both sides inside the grooves. A retaining plate 26 is fixedly connected to one side of each slide plate 25. Two slide rods 24 are fixedly connected inside the grooves. The two slide rods 24 pass through the two slide plates 25 and are slidably connected to the two slide plates 25. The two retaining plates 26 are arranged opposite to each other and cooperate to form a circular groove. The mounting bolt 6 is adapted to the retaining plate 26. The mounting cutter head 23 corresponds to the retaining plate 26. The mounting bolt 6 is supported and limited by the two retaining plates 26.

[0040] The two ends of the fixed plate 1 are fixedly connected to the second motor 28. The output ends of the four second motors 28 are fixedly connected to the four synchronous pulleys 4 respectively. The second motors 28 are started to drive the synchronous pulleys 4 to rotate, thereby driving the synchronous belt 3 to move.

[0041] Multiple mounting bolts 6 are slidably connected to the inside of two guide frames 2 and are adapted to the internal shape of the two guide frames 2. Horizontal plates 29 are fixedly connected to both ends of the fixing plate 1. Two vertical plates 13 are fixedly connected to the top of the two horizontal plates 29. Two hanging ears 30 are fixedly connected to both the front and rear sides of the fixing plate 1. Limiting springs 27 are fixedly connected to the top of both ends of the fixing plate 1. The top of the inner side of the limiting springs 27 is provided with an arc-shaped protrusion. The four limiting springs 27 are arranged opposite each other in pairs. The four limiting springs 27 are respectively set at both ends of the two synchronous belts 3. The curvature of the limiting springs 27 is adapted to the movement trajectory of the swing arm 10. The mounting bolts 6 are guided by the limiting springs 27.

[0042] Slide rails 31 are fixedly connected to both the front and rear sides of the bottom of the fixed plate 1. A first lead screw 3201 and a second lead screw 3202 are rotatably connected inside the two slide rails 31, respectively. A first threaded block 3301 and a second threaded block 3302 are slidably connected to both sides of the inside of the slide rails 31, respectively. The first lead screw 3201 passes through the first threaded block 3301 and is threadedly connected to it. The second lead screw 3202 passes through the second threaded block 3302 and is threadedly connected to it. Another first threaded block 3301 is fitted onto the first... The outer side of the second lead screw 3202 is movably connected to the second lead screw 3202. Another second threaded block 3302 is sleeved on the outer side of the first lead screw 3201 and movably connected to the first lead screw 3201. One end of each of the two slide rails 31 is fixedly connected to a fourth motor 39. The output ends of the two fourth motors 39 are fixedly connected to the first lead screw 3201 and the second lead screw 3202 respectively. When the first lead screw 3201 rotates, it drives the first threaded block 3301 to move. When the second lead screw 3202 rotates, it drives the second threaded block 3302 to move.

[0043] Sliding sleeves 34 are provided on both sides of the bottom of the fixed plate 1. The two sliding sleeves 34 are fixedly connected to the bottom of the two first threaded blocks 3301 and the second threaded block 3302 respectively. The two sliding sleeves 34 are slidably connected to the two sides inside. The two locking plates 35 are fixedly connected to the opposite ends of the two locking plates 35. The two racks 36 are arranged in opposite directions. The top of the two sliding sleeves 34 are fixedly connected to the third motor 37. The output ends of the two third motors 37 pass through the sliding sleeves 34 and are rotatably connected to the sliding sleeves 34. The outer side of the output ends of the two third motors 37 are fixedly connected to the guide gears 38. The guide gears 38 are meshed with the two racks 36 respectively. The third motors 37 are started to drive the guide gears 38 to rotate, thereby driving the two racks 36 to move in opposite directions.

[0044] Specifically, multiple mounting bolts 6 are placed inside the two guide frames 2, and the hanging lugs 30 are hoisted via slings. A crane moves the fixing plate 1 to the steel frame position. A third motor 37 is started, driving the guide gear 38 to rotate, causing the guide gear 38 to move the two racks 36 relative to each other, thereby moving the two clamping plates 35 relative to each other. The two clamping plates 35 then pass through the steel structure to clamp it. After the fixing plate 1 is hoisted to the installation position, and the fixing plate 1 aligns with the steel structure, the second motor 28 is started, driving the synchronous pulley 4 to rotate. This causes the synchronous pulley 4 to move the synchronous belt 3, which in turn moves the partition plate 5, causing the partition plate 5 to move the multiple mounting bolts 6. When the outermost mounting bolt 6 moves to the position of the swing arm 10, it is locked inside the slot of the swing arm 10. The electric push rod 7 is activated, which pushes the push plate 8 to move. This causes the push plate 8 to move the two toothed plates 11. When the toothed plates 11 move, they drive the half gear 12 to rotate, which in turn drives the swing arm 10 to rotate. When the swing arm 10 rotates, it drives the mounting bolt 6 to move outward. At the same time, the limiting spring 27 limits and guides the mounting bolt 6. The arc-shaped protrusion on the inner side of the limiting spring 27 pushes the mounting bolt 6 and moves it to the position of the clamping plate 26. Then, the mounting bolt 6 falls into the clamping plate 26, so that the mounting bolt 6 corresponds to the mounting hole inside the steel structure, which facilitates the installation of the steel structure.

[0045] The first motor 16 starts and drives the rotating sleeve 17 to rotate, causing the rotating sleeve 17 to rotate and drive the limiting strip 20 to rotate. The limiting strip 20 limits the limiting groove 21, causing the threaded rod 18 to rotate synchronously. When the threaded rod 18 rotates, because the threaded rod 18 is threadedly connected to the limiting sleeve 19, the threaded rod 18 descends while rotating. The threaded rod 18 slides inside the rotating sleeve 17, causing the threaded rod 18 to drive the connecting plate 22 and the mounting head 23 to rotate. In this way, the threaded rod 18 drives the connecting plate 22 and the mounting head 23 to rotate. 3. As the installation head 23 descends, it aligns with the top of the installation bolt 6, thus aligning the installation head 23 with the cross groove on the top of the installation bolt 6. When the threaded rod 18 descends, it pushes the connecting plate 22, thereby causing the installation head 23 to rotate and descend, allowing the installation head 23 to drive the installation bolt 6 into the installation threaded hole of the steel structure. This allows the steel structure to be installed directly during the hoisting process, eliminating the need for manual climbing to high places for installation, increasing safety, and greatly reducing intermediate installation steps, thus improving installation efficiency.

[0046] After the steel structure is installed, the clamping plate 35 is loosened from the steel structure to detach the device from the installed steel structure. The steel structure is then hoisted again, and multiple steel structures are installed step by step in this way.

[0047] When the fourth motor 39 starts and drives the first lead screw 3201 to rotate, the first lead screw 3201 drives the first threaded block 3301 to move, causing the first threaded block 3301 to slide inside the slide rail 31, thus moving the sliding sleeve 34. Alternatively, the fourth motor 39 drives the second lead screw 3202 to rotate, causing the second threaded block 3302 to move, which in turn moves the other sliding sleeve 34. This allows for the movement of one sliding sleeve 34, shortening the distance between the two sliding sleeves, and thus adapting to the installation of steel structures of different sizes. After one end of the steel structure is installed, the hoist moves the fixing plate 1 towards the side where it was installed. At the same time, the two fourth motors 39 start simultaneously, driving the first lead screw 3201 and the second lead screw 3202 to rotate synchronously, thus driving the first threaded block 3301 and the second lead screw 3202 to move. This causes the fixing plate 1 and the two sliding sleeves 34 to move relative to each other, allowing the sliding sleeves 34 to move the steel structure to the other end. Then, the mounting bolts 6 are installed on the other side of the steel structure, which is beneficial for installing structures of different lengths.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated steel structure frame erection and hoisting device, comprising a fixing plate (1), characterized in that: The top two sides of the fixed plate (1) are fixedly connected to guide frames (2), and the outer sides of the two guide frames (2) are fitted with synchronous belts (3). The two synchronous belts (3) are rotatably connected to both ends of the inner side of the two synchronous belts (3). The outer sides of the two synchronous belts (3) are fixedly connected to multiple partitions (5) in an array. The two guide frames (2) are provided with multiple mounting bolts (6). The multiple mounting bolts (6) are respectively set between the multiple partitions (5). The top two sides of the fixed plate (1) are fixedly connected to electric push rods (7). The output ends of the two electric push rods (7) are fixedly connected to push plates (8). The upper and lower ends of the two push plates (8) are fixedly connected to toothed plates (11). The top two sides of the fixed plate (1) are fixedly connected to main shafts (9). The upper and lower ends of the two main shafts (9) are rotatably connected to swing arms (10).

2. The prefabricated steel structure frame erection and hoisting device according to claim 1, characterized in that: The four swing arms (10) are provided with half gears (12) at their rear ends. The four tooth plates (11) are respectively meshed with the four half gears (12). The four swing arms (10) are provided with slots at their front ends. The four slots are respectively adapted to multiple mounting bolts (6).

3. The prefabricated steel structure frame erection and hoisting device according to claim 1, characterized in that: Both ends of the fixed plate (1) are fixedly connected to horizontal plates (29), the tops of the two horizontal plates (29) are fixedly connected to vertical plates (13), the tops of the two vertical plates (13) are fixedly connected to platform plates (14), the tops of the two platform plates (14) are fixedly connected to fixed sleeves (15), the tops of the four fixed sleeves (15) are fixedly connected to a first motor (16), the inside of each fixed sleeve (15) is rotatably connected to a rotating sleeve (17), the inside of each rotating sleeve (17) is slidably connected to a threaded rod (18), and the inside of each platform plate (14) is fixedly connected to limit sleeves (19) on both sides. The threaded rod (18) passes through the limiting sleeve (19) and is threadedly connected to the limiting sleeve (19). A connecting plate (22) is fixedly connected to the bottom end of the threaded rod (18). An installation cutter head (23) is fixedly connected to the bottom end of the connecting plate (22). The installation cutter head (23) is adapted to the cross groove at the top of the installation bolt (6). Limiting strips (20) are fixedly connected to both sides inside the rotating sleeve (17). Limiting grooves (21) are opened on both sides of the threaded rod (18). The two limiting strips (20) are slidably connected to the two limiting grooves (21) and adapted to the two limiting grooves (21).

4. The prefabricated steel structure frame erection and hoisting device according to claim 3, characterized in that: The fixed plate (1) has grooves on both sides at both ends. Slide plates (25) are provided on both sides inside the grooves. A clamping plate (26) is fixedly connected to one side of each slide plate (25). Two slide rods (24) are fixedly connected inside the grooves. The two slide rods (24) pass through the two slide plates (25) respectively and are slidably connected to the two slide plates (25). The two clamping plates (26) are arranged opposite to each other and cooperate with each other to form a circular groove. The mounting bolt (6) is adapted to the clamping plate (26). The mounting cutter head (23) corresponds to the clamping plate (26).

5. The prefabricated steel structure frame erection and hoisting device according to claim 1, characterized in that: The fixed plate (1) has two fixed connections to two second motors (28) on both sides inside. The output ends of the four second motors (28) are fixedly connected to four synchronous pulleys (4).

6. The prefabricated steel structure frame erection and hoisting device according to claim 3, characterized in that: Multiple installation bolts (6) are slidably connected to the inside of the two guide frames (2) and are adapted to the internal shape of the two guide frames (2). Both ends of the fixing plate (1) are fixedly connected to horizontal plates (29). The two vertical plates (13) are fixedly connected to the top of the two horizontal plates (29). The front and rear sides of the fixing plate (1) are fixedly connected to two hanging ears (30).

7. The prefabricated steel structure frame erection and hoisting device according to claim 1, characterized in that: Limiting springs (27) are fixedly connected to both ends of the fixed plate (1). The inner top of the limiting spring (27) is provided with an arc-shaped protrusion. The four limiting springs (27) are arranged opposite each other. The four limiting springs (27) are respectively set at both ends of the two synchronous belts (3). The curvature of the limiting springs (27) is adapted to the movement trajectory of the swing arm (10).

8. The prefabricated steel structure frame erection and hoisting device according to claim 1, characterized in that: The fixed plate (1) has slide rails (31) fixedly connected to both the front and rear sides of its bottom. A first lead screw (3201) and a second lead screw (3202) are rotatably connected inside the two slide rails (31). A first threaded block (3301) and a second threaded block (3302) are slidably connected to both sides of the slide rails (31). The first lead screw (3201) passes through the first threaded block (3301) and is threadedly connected to it. The second lead screw (3202) passes through the second threaded block (3302) and is threadedly connected to it. Two threaded blocks (3302) are threaded together. Another first threaded block (3301) is sleeved on the outside of the second lead screw (3202) and movably connected to the second lead screw (3202). Another second threaded block (3302) is sleeved on the outside of the first lead screw (3201) and movably connected to the first lead screw (3201). One end of each of the two slide rails (31) is fixedly connected to a fourth motor (39). The output ends of the two fourth motors (39) are fixedly connected to the first lead screw (3201) and the second lead screw (3202) respectively.

9. The prefabricated steel structure frame erection and hoisting device according to claim 1, characterized in that: The fixed plate (1) is provided with sliding sleeves (34) on both sides of the bottom. The two sliding sleeves (34) are fixedly connected to the bottom of the two first threaded blocks (3301) and the second threaded block (3302) respectively. The two sliding sleeves (34) are slidably connected with snap-fit ​​plates (35) on both sides inside. The two snap-fit ​​plates (35) are fixedly connected with racks (36) at opposite ends. The two racks (36) are arranged in opposite directions.

10. The prefabricated steel structure frame erection and hoisting device according to claim 9, characterized in that: A third motor (37) is fixedly connected to the top of each of the two sliding sleeves (34). The output ends of the two third motors (37) pass through the sliding sleeves (34) and are rotatably connected to the sliding sleeves (34). A guide gear (38) is fixedly connected to the outside of the output ends of the two third motors (37). The guide gear (38) meshes with the two racks (36) respectively.

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