Hoisting equipment for high-low span hole of roof

Abstract

The invention relates to roof high-low span hole hoisting equipment, and belongs to the technical field of material transportation, the roof high-low span hole hoisting equipment comprises a portal frame main body, a main beam, a trolley, a first driving mechanism, a second driving mechanism, a hoisting cage, a lifting mechanism and an anti-falling mechanism, the portal frame main body is arranged on a roof and stretches across a roof high-low span hole, and the main beam is slidably arranged on the portal frame main body; the trolley is slidably arranged on the main beam, the first driving mechanism is arranged on the portal frame body and used for driving the main beam to slide, the second driving mechanism is arranged on the main beam and used for driving the trolley to slide, and the lifting mechanism is arranged on the trolley and used for driving the cage to ascend and descend. The anti-falling mechanism is arranged on the portal frame body and used for limiting falling of the lifting cage when the lifting mechanism is damaged. The lifting device has the effect of improving the lifting efficiency and safety of the high-low span hole of the roof.

Description

Technical Field

[0001] This application relates to the field of material transportation technology, and in particular to a hoisting device for roof openings of varying heights. Background Technology

[0002] During building construction, especially in the roof construction phase, structures with varying heights and spans are frequently encountered. Material hoisting at these openings is a common and challenging task. Traditional hoisting machinery is typically designed for single-height or planar operations, making it difficult to adapt to the complex spatial requirements of openings with varying heights and spans. Furthermore, the limited load-bearing capacity of roof structures leads to numerous challenges for traditional hoisting machinery operating in this environment.

[0003] Currently, the main solutions for hoisting materials across roof openings of varying heights include two methods: First, using a tower crane in conjunction with manual labor. This method requires frequent adjustments to the crane boom angle, is limited by the crane's coverage area, and suffers from low efficiency and poor safety. Second, employing a segmented hoisting method, where materials are first hoisted to the lower roof section and then transferred to the higher section via a secondary transfer. This method increases the number of material transfers and labor costs. Therefore, there is an urgent need for hoisting machinery that can effectively solve the problem of hoisting materials across roof openings of varying heights. Summary of the Invention

[0004] To improve the efficiency and safety of hoisting at the openings of different heights on a roof, this application provides a hoisting device for openings of different heights on a roof.

[0005] The technical solution for the roof hoisting equipment for high and low span openings provided in this application is as follows: A roof hoisting device for varying heights across an opening includes a gantry frame body, a main beam, a trolley, a first drive mechanism, a second drive mechanism, a cage, a lifting mechanism, and a fall protection mechanism. The gantry frame body is mounted on the roof and spans the varying heights across the opening. The main beam is slidably mounted on the gantry frame body, and the trolley is slidably mounted on the main beam. The first drive mechanism is mounted on the gantry frame body and drives the main beam to slide. The second drive mechanism is mounted on the main beam and drives the trolley to slide. The lifting mechanism is mounted on the trolley and drives the cage to rise and fall. The fall protection mechanism is mounted on the gantry frame body and limits the cage's descent in the event of damage to the lifting mechanism.

[0006] By adopting the above technical solution, construction workers use the first drive mechanism to drive the main beam to slide on the gantry frame, and the second drive mechanism to drive the trolley to slide on the main beam. The trolley, through the lifting mechanism, moves the cage to the location of the material to be hoisted. After the material is loaded into the cage, the cage is lifted by the lifting mechanism. Then, the first drive mechanism drives the main beam to move, and the second drive mechanism drives the trolley to move, thereby transferring the cage between the high and low spans, or directly transferring the cage to the opening between the high and low spans. Then, the lifting mechanism lowers the cage, which can conveniently transfer the material to the required location. The operation is simple and efficient. In addition, if the lifting mechanism is damaged, the anti-fall mechanism can limit the fall of the cage, effectively improving the hoisting efficiency and safety at the opening between the high and low spans of the roof.

[0007] Optionally, the lifting mechanism includes an electric hoist and a steel rope, the electric hoist is mounted on a trolley, the steel rope is mounted on the electric hoist, and the steel rope hooks are located at the four corners of the cage.

[0008] By adopting the above technical solution, the construction workers hook the steel ropes to the four corners of the cage, so that the force of the steel ropes is evenly distributed on the cage. Then, by controlling the extension and retraction of the electric hoist, the cage can be raised or lowered by the steel ropes, making it easy to control the raising and lowering of the cage.

[0009] Optionally, the main body of the gantry frame includes steel columns and steel beams. Multiple steel columns are provided on the roof, and the multiple steel columns are distributed in an array at different heights on the roof. The steel beams are provided on adjacent steel columns, and the main beam is slidably provided on the steel beams.

[0010] By adopting the above technical solution, multiple steel columns are first positioned and installed in an array on the high and low spans of the roof. Then, multiple steel beams are installed on adjacent steel columns, connecting the multiple steel columns and steel beams to form a stable whole, ensuring that the main body of the gantry has sufficient strength and stability, and ensuring the safety of hoisting operations.

[0011] Optionally, the steel beam is provided with a reinforcing rope, which is tightened to the roof structure.

[0012] By adopting the above technical solution, the reinforcing rope is used to tighten and support the steel beam, thereby improving the stability of the steel beam.

[0013] Optionally, the fall protection mechanism includes a fall arrestor, a safety rope, and a limiting component. The fall arrestor is mounted on the trolley and connected to the cage. The safety rope is mounted on the trolley. The limiting component is mounted on the cage and is used to lock onto the safety rope when the cage descends rapidly.

[0014] By adopting the above technical solution, when the electric hoist or steel rope is damaged, the fall arrestor will pull the cage to prevent it from falling, and at the same time the limiting component will lock onto the safety rope to prevent the cage from falling. Together, they will brake the rapidly falling cage and improve the safety of hoisting.

[0015] Optionally, the limiting component includes a tightening sleeve, a limiting sleeve, and a docking member. The tightening sleeve is mounted on the cage and slidably fitted onto the safety rope. The tightening sleeve is conical in shape and has multiple deformation slots. The limiting sleeve is slidably fitted onto the safety rope and is flexibly connected to the tightening sleeve and located at the bottom of the tightening sleeve. The limiting sleeve has a conical hole for the tightening sleeve to engage. The limiting sleeve falls along the safety rope at a speed less than the free fall speed of the cage. The docking member is mounted on the limiting sleeve and is used to position the limiting sleeve when the tightening sleeve abuts against it.

[0016] By adopting the above technical solution, when the electric hoist normally drives the cage to lift and lower, the electric hoist controls the lifting speed of the cage, so that both the limiting sleeve and the tightening sleeve can slide along the safety rope. If the electric hoist or steel rope is damaged, the cage will fall rapidly under the action of gravity. The speed at which the limiting sleeve falls along the safety rope is less than the free fall speed of the cage, so that the cage drives the tightening sleeve to insert into the conical hole on the limiting sleeve. The side wall of the conical hole squeezes the tightening sleeve, causing the tightening sleeve to contract and clamp onto the safety rope. At this time, the connecting piece positions the limiting sleeve, so that the side wall of the conical hole continues to squeeze the tightening sleeve, ensuring that the tightening sleeve continues to clamp the safety rope and brake the cage.

[0017] Optionally, the docking component includes a plug rod, a plug block, and a telescopic spring. The plug rod is mounted on a limiting sleeve, the plug block is slidably mounted on the plug rod, and the plug block has an arc-shaped surface for driving the plug block to slide into the plug rod when it abuts against the cage. The telescopic spring is mounted on the plug rod and is used to drive the plug block to slide away from the plug rod. The cage has a docking hole for inserting the plug rod.

[0018] By adopting the above technical solution, when the cage is in free fall, the cage moves towards the limiting sleeve, and the insert rod moves towards the insertion hole. During the insertion process, the cage abuts against the arc-shaped surface of the insert block, which drives the insert block to slide into the insert rod. After the insert rod is inserted into the insertion hole, the telescopic spring drives the insert block away from the insert rod and pops it out. The insert block abuts against the cage, which can limit the limiting sleeve from moving away from the cage, thus conveniently positioning the limiting sleeve on the cage.

[0019] Optionally, the steel column is provided with a locking mechanism for locking the steel beam. The locking mechanism includes a locking seat, a connecting bolt, and a positioning component. The locking seat is slidably disposed on the steel column, the steel beam is inserted into the locking seat, the connecting bolt is disposed on the locking seat and passes through the steel beam, and the positioning component is disposed on the locking seat and is used to position the locking seat on the steel column.

[0020] By adopting the above technical solution, when installing on roofs with different spans, the steel columns are first arrayed and installed on the high and low spans of the roof. Then, the locking seats are slid on the steel columns to adjust the locking seats on the low and high spans to the same appropriate height. Then, the locking seats are positioned on the steel columns by the positioning components. Subsequently, the steel beams can be inserted into the locking seats, and the connecting bolts are passed through the locking seats and through the steel beams to position and install the steel beams. By adapting and adjusting the installation position of the steel beams on the steel columns, the gantry frame body can be used for different roof structures with varying spans, improving the versatility of hoisting construction on different roof structures with varying spans.

[0021] Optionally, the positioning assembly includes a positioning bolt and a clamping member. The steel column has multiple positioning holes spaced apart. The positioning bolt is disposed on the locking seat and passes through the positioning holes. The clamping member is disposed on the locking seat and is used to clamp onto the steel column.

[0022] By adopting the above technical solution, after adjusting the locking seat to a suitable height, the positioning bolt is passed through the locking seat and through the corresponding positioning hole, and then clamped to the steel column by the clamping device, so as to lock the locking seat on the steel column and ensure the stability of the locking seat on the steel column.

[0023] Optionally, the clamping member includes clamping plates, clamping screws, support plates, and spreading screws. Two clamping plates are slidably disposed on the locking seat, and the two clamping plates are respectively located on both sides of the steel column. The clamping screws are rotatably disposed on the locking seat and are used to drive the two clamping plates closer to or further away from each other. Two support plates are slidably disposed on the locking seat, and the two support plates are respectively located between the two inner side walls of the steel column. The spreading screws are rotatably disposed on the locking seat and are used to drive the two support plates closer to or further away from each other.

[0024] By adopting the above technical solution, the clamping screw is turned so that the two clamping plates come closer to each other and clamp the two outer sides of the steel column. The spreading screw is turned so that the two spreading plates move away from each other and press against the two inner side walls of the steel column respectively. In this way, the locking seat is positioned on the steel column. The clamping force of the clamping plates on the steel column and the spreading force of the spreading plates on the steel column can restrain each other, reducing the possibility of deformation of the steel column.

[0025] In summary, this application includes at least one of the following beneficial technical effects: The lifting mechanism lowers the cage, making it easy to transfer materials to the required location. The operation is simple and efficient. In the event of damage to the lifting mechanism, the anti-fall mechanism can limit the descent of the cage, effectively improving the hoisting efficiency and safety at the openings of the roof at different heights. The sidewall of the tapered hole squeezes the tightening sleeve, causing the tightening sleeve to contract and clamp onto the safety rope. At this time, the connecting piece positions the limiting sleeve, so that the sidewall of the tapered hole continues to squeeze the tightening sleeve, ensuring that the tightening sleeve continues to clamp the safety rope and brake the cage. Two clamping plates are brought close together and clamped on the two outer sides of the steel column. The opening screw is turned so that the two support plates move away from each other and press against the two inner side walls of the steel column. This locks the seat on the steel column for positioning. The clamping force of the clamping plates on the steel column and the opening force of the support plates can restrain each other, reducing the possibility of deformation of the steel column. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of the roof high-low span opening hoisting equipment according to an embodiment of this application.

[0027] Figure 2 This is a structural schematic diagram of the connection between the steel beam and the crossbeam in an embodiment of this application.

[0028] Figure 3 This is a schematic diagram of the structure of the trolley and lifting mechanism according to an embodiment of this application.

[0029] Figure 4 This is a schematic diagram of the trolley and lifting mechanism from another perspective of an embodiment of this application.

[0030] Figure 5 yes Figure 4 A magnified view of part A in the diagram.

[0031] Reference numerals: 1. Gantry frame main body; 11. Steel column; 12. Steel beam; 2. Main beam; 3. Trolley; 4. First drive mechanism; 5. Second drive mechanism; 6. Cage; 7. Lifting mechanism; 71. Electric hoist; 72. Steel rope; 8. Fall protection mechanism; 81. Fall protector; 82. Safety rope; 83. Limiting component; 831. Tightening sleeve; 832. Limiting sleeve; 833. Connecting part; 8331. Insert rod; 8332. Insert block; 8333. Telescopic spring; 9. Reinforcing rope; 10. Locking mechanism; 101. Locking seat; 102. Connecting bolt; 103. Positioning component; 1031. Positioning bolt; 1032. Clamping part; 10321. Clamping plate; 10322. Clamping screw; 10323. Support plate; 10324. Spreading screw. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0033] This application discloses a hoisting device for roof openings with varying heights.

[0034] Reference Figure 1 The roof hoisting equipment for high and low span openings includes a gantry frame body 1, a main beam 2, a trolley 3, a first drive mechanism 4, a second drive mechanism 5, a cage 6, a lifting mechanism 7, a fall protection mechanism 8, and a locking mechanism 10.

[0035] Reference Figure 1 The main body 1 of the gantry frame is installed on the roof. The main body 1 of the gantry frame spans the openings of the high and low spans of the roof. The main body 1 of the gantry frame includes steel columns 11 and steel beams 12. Multiple steel columns 11 are installed on the roof. Steel beams 12 are installed on adjacent steel columns 11. In this embodiment, both steel columns 11 and steel beams 12 are I-beams. Two steel columns 11 are installed on the high and low spans of the roof respectively by chemical anchors. The four steel columns 11 form a rectangular array.

[0036] Reference Figure 1 , Figure 2The locking mechanism 10 is installed on the steel column 11. The locking mechanism 10 is used to lock the steel beam 12. The locking mechanism 10 includes a locking seat 101, a connecting bolt 102, and a positioning assembly 103. The locking seat 101 is vertically slidably sleeved on the steel column 11. A slot is provided on the locking seat 101, and the steel beam 12 is inserted into the slot. The connecting bolt 102 is installed on the locking seat 101 and passes through the steel beam 12, thereby locking the steel beam 12. The positioning assembly 103 is installed on... Mounted on the locking seat 101, the positioning assembly 103 is used to position the locking seat 101 on the steel column 11. The positioning assembly 103 includes a positioning bolt 1031 and a clamping member 1032. Multiple positioning holes are spaced apart along the length of the steel column 11. The positioning bolt 1031 passes through the locking seat 101 and through the positioning holes, thereby positioning the locking seat 101. The clamping member 1032 is mounted on the locking seat 101 and is used to clamp it to the steel column 11. On the steel column 11, the clamping member 1032 includes a clamping plate 10321, a clamping screw 10322, a support plate 10323, and a spreading screw 10324. Two clamping plates 10321 are slidably mounted facing each other on the locking seat 101, with the two clamping plates 10321 located on the two outer sides of the steel column 11 respectively. The clamping screw 10322 is rotatably mounted on the locking seat 101, and is threadedly connected to both clamping plates 10321. The two sections of threads of the two clamping plates 10321 are threaded together in opposite directions. Two support plates 10323 are slidably installed on the locking seat 101 facing each other. The two support plates 10323 are located between the two inner side walls of the steel column 11. The spreading screw 10324 is rotatably installed on the locking seat 101. The spreading screw 10324 is threadedly connected to both support plates 10323. The two sections of threads of the spreading screw 10324 and the two support plates 10323 are threaded together in opposite directions.

[0037] Construction workers installed four steel columns 11 in a rectangular array at the different spans of the roof. Then, based on the height difference between the high and low spans, they slid the locking seats 101 onto the steel columns 11, adjusting the locking seats 101 on the multiple steel columns 11 in both the high and low spans to a suitable, uniform height. Next, the positioning bolts 1031 were passed through the locking seats 101 and their corresponding positioning holes to initially position the locking seats 101. Then, the clamping screws 10322 were tightened, causing the two clamping plates 10321 to move closer together and clamp onto the two outer sides of the steel column 11. Finally, the spreading screws 10324 were tightened, causing the two spreading plates 10323 to move away from each other and press against the two inner sidewalls of the steel column 11. This, combined with the positioning screws, positioned the locking seats 101 at the required height on the steel column 11, saving the number of bolts needed to position the locking seats 101 on the steel column 11 and facilitating subsequent... The locking seat 101 is then disassembled. The clamping force of the clamping plate 10321 on the steel column 11 and the force of the support plate 10323 in opening the steel column 11 can restrain each other, reducing the possibility of deformation of the steel column 11. Then, the construction personnel insert the steel beam 12 into the locking seat 101 and pass the connecting bolt 102 through the locking seat 101 and through the steel beam 12 to position the steel beam 12 on the locking seat 101, thereby completing the stable installation of the steel beam 12 on the steel column 11. This allows multiple steel columns 11 and steel beams 12 to be connected to form a stable whole, ensuring that the gantry frame body 1 has sufficient strength and stability, ensuring the safety of hoisting operations. Furthermore, by adapting and adjusting the installation position of the steel beam 12 on the steel column 11, the gantry frame body 1 can be applied to different roof height and span structures, improving the versatility of hoisting construction for different roof height and span structures.

[0038] Reference Figure 1 A reinforcing rope 9 is installed on the steel beam 12. The reinforcing rope 9 is wrapped around the connection between the steel beam 12 and the steel column 11, and the other end of the reinforcing rope 9 is taut on the roof structure. The reinforcing rope 9 tauts the steel beam 12 and the steel column 11, thereby supporting the steel beam 12 and the steel column 11 and improving their stability.

[0039] Reference Figure 1The main beam 2 is slidably mounted on the steel beam 12. A first drive mechanism 4 is mounted on the steel beam 12 and is used to drive the main beam 2 to move on the steel beam 12. In this embodiment, the first drive mechanism 4 includes a drive rack, a drive gear, and a drive motor. The drive rack is mounted on the steel beam 12 along its length. The drive gear is rotatably mounted on the main beam 2 and meshes with the drive rack. The drive motor is mounted on the main beam 2, and its output shaft is coaxially connected to the drive gear. In other embodiments, a motor and a lead screw can also be used to drive the main beam 2 to move. When the drive motor is started, its output shaft drives the drive gear to rotate, which in turn drives the main beam 2 to move along the drive rack, thus driving the main beam 2 to move on the steel beam 12.

[0040] Reference Figure 1 The trolley 3 is slidably mounted on the main beam 2 along the length direction of the main beam 2. The second drive mechanism 5 is mounted on the trolley 3 and is used to drive the trolley 3 to move on the main beam 2. In this embodiment, the second drive mechanism 5 also adopts a drive rack, a drive gear and a drive motor. The drive rack is mounted on the main beam 2 along the length direction of the main beam 2. The drive gear is rotatably mounted on the trolley 3 and meshes with the drive rack. The drive motor is mounted on the trolley 3 and the output shaft of the drive motor is coaxially connected with the drive gear.

[0041] Reference Figure 1 , Figure 3 The lifting mechanism 7 is installed on the trolley 3. The lifting mechanism 7 is used to drive the cage 6 to rise and fall. The lifting mechanism 7 includes an electric hoist 71 and a steel rope 72. The electric hoist 71 is installed on the trolley 3. The steel rope 72 is hooked on the hook of the electric hoist 71. The other end of the steel rope 72 is divided into four strands, which are hooked on the four corners of the cage 6 respectively. In this embodiment, the cage 6 is welded from steel plates and steel bars. Multiple steel bars are welded around the steel plates to form the cage 6.

[0042] After the construction workers wind the steel rope 72 onto the hook of the electric hoist 71, they then hook the steel rope 72 at the four corners of the cage 6. The cage 6 can then be lifted or lowered by extending or retracting the electric hoist 71, allowing for convenient control of the lifting and lowering of the cage 6.

[0043] When materials need to be hoisted, the construction personnel first control the electric hoist 71 to lift the basket, and then drive the main beam 2 to slide on the steel beam 12 through the first drive mechanism 4. The main beam 2 drives the trolley 3 to move, and then the second drive mechanism 5 drives the trolley 3 to slide on the main beam 2. The trolley 3 drives the cage 6 to move above the material to be hoisted. Then, control the electric hoist 71 to lower the basket, load the material into the basket, and then control the electric hoist 71 to lift the basket. Then, drive the main beam 2 to move through the first drive mechanism 4 and the trolley 3 to move through the second drive mechanism 5, thereby transferring the cage 6 between the high and low spans, or transferring the cage 6 to the opening aligned with the high and low spans, and then controlling the electric hoist 71 to lower the basket, the material can be transferred to the required position of the high and low spans of the roof in one go. The operation is simple and efficient, effectively improving the hoisting efficiency at the openings of the high and low spans of the roof.

[0044] Reference Figure 4 , Figure 5The fall arrestor 8 is installed on the gantry frame body 1. The fall arrestor 8 is used to limit the fall of the cage 6 when the lifting mechanism 7 is damaged. The fall arrestor 8 includes fall arrestors 81, safety ropes 82, and limiting components 83. Two fall arrestors 81 are installed on the trolley 3, and two safety ropes 82 are installed on the trolley 3. The two fall arrestors 81 and two safety ropes 82 are arranged in a rectangular array on the trolley 3. The two fall arrestors 81 are located above two opposite corners of the cage 6, and the hooks of the fall arrestors 81 are attached to the cage 6. The two safety ropes 82 are located at the other two opposite corners of the cage 6. The limiting components 83 are installed on the cage 6 and are used to prevent the cage 6 from falling rapidly. During descent, the cable is locked to the safety rope 82. The limiting component 83 includes a tightening sleeve 831, a limiting sleeve 832, and a docking piece 833. The tightening sleeve 831 is installed on the cage 6 and slidably sleeved on the safety rope 82. The tightening sleeve 831 is tapered from the direction near the trolley 3 to the direction away from the trolley 3. The tightening sleeve 831 has multiple deformation slots for the tapered sleeve to deform under compression. The limiting sleeve 832 is slidably sleeved on the safety rope 82 and is located at the bottom of the tapered sleeve. The limiting sleeve 832 has tapered holes for the tightening sleeve 831 to engage. The limiting sleeve 832 is flexibly connected to the tightening sleeve 831 by a soft rope. An extension sleeve is installed at the bottom of the limiting sleeve 832. The extension sleeve is fitted onto the safety rope 82 to increase the friction between the limiting sleeve 832 and the safety rope 82 when the limiting sleeve 832 falls, so that the falling speed of the limiting sleeve 832 along the safety rope 82 is less than the free fall speed of the cage 6. A docking piece 833 is installed on the limiting sleeve 832. The docking piece 833 is used to position the limiting sleeve 832 on the cage 6 when the tightening sleeve 831 is pressed against the limiting sleeve 832. The docking piece 833 includes a plug rod 8331, a plug block 8332, and a telescopic spring 8333. The plug rod 8331 is installed on the limiting sleeve 832. The bottom of the cage 6 has an opening for the plug rod 8331. In this embodiment, a protective cover is installed on the cage 6 to cover the insertion hole, reducing the possibility that the insertion rod 8331 will be difficult to pass through the insertion hole when the material is piled into the cage 6 and obstructs the insertion hole. The insertion block 8332 is slidably installed on the side wall of the insertion rod 8331. The insertion block 8332 has an arc-shaped surface for driving the insertion block 8332 to slide into the insertion rod 8331 when it abuts against the cage 6. The telescopic spring 8333 is installed on the insertion rod 8331 and connected to the insertion block 8332. The telescopic spring 8333 has a tendency to drive the insertion block 8332 to slide out of the insertion rod 8331.

[0045] When the electric hoist 71 is normally lifting or lowering the cage 6, it controls the lifting speed of the cage 6. The cage 6 then drives the tightening sleeve 831 and the limiting sleeve 832 to slide along the safety rope 82. The cage 6 lifts and lowers normally. However, if the electric hoist 71 or the steel rope 72 is damaged, the cage 6 will undergo free fall under gravity. The cage 6 falls rapidly, and the fall arrestor 81 activates, pulling the cage 6 to prevent further fall. Simultaneously, as the cage 6 falls to the gap where the fall arrestor 81 holds it, because the speed at which the limiting sleeve 832 falls along the safety rope 82 is less than the free fall speed of the cage 6, the cage 6 drives the tightening sleeve 831 to move closer to the limiting sleeve 832 and press against the side wall of the tapered hole on the limiting sleeve 832. The side wall of the tapered hole on the limiting sleeve 832 compresses the tightening sleeve 831, causing it to tighten. When sleeve 831 deforms and tightens, it engages with safety rope 82. Simultaneously, as cage 6 falls and approaches limiting sleeve 832, insert rod 8331 approaches docking hole on cage 6. During insertion, the arc-shaped surface of insert block 8332 abuts against cage 6, causing insert block 8332 to slide into insert rod 8331. Once insert rod 8331 is inserted into docking hole, cage 6 no longer presses against insert block 8332. Extension spring 8333 drives insert block 8332 away from insert rod 8331 and pops out. Insert block 8332 abuts against cage 6, thus limiting sleeve 832 from moving away from cage 6. This facilitates positioning sleeve 832 on cage 6, ensuring the stability of the engagement between limiting sleeve 832 and tightening sleeve 831. This ensures that tightening sleeve 831 continuously clamps safety rope 82, braking cage 6. Together with fall arrestor 81, it brakes rapidly falling cage 6, improving the safety of hoisting.

[0046] The implementation principle of the roof high-low span opening hoisting equipment in this application embodiment is as follows: When materials need to be hoisted at the roof high-low span opening, the construction personnel drive the main beam 2 to move through the first drive mechanism 4 and the trolley 3 to move through the second drive mechanism 5, moving the cage 6 to the material to be hoisted, loading the material into the cage 6, and the electric hoist 71 lifts the cage 6. The first drive mechanism 4 and the second drive mechanism 5 then drive the cage 6 to transfer it between the high span and the low span, or directly transfer the cage 6 to the high-low span opening. Then, the hoist is adjusted to lower the cage 6, which can conveniently transfer the material to the required position in one go. The operation is simple and efficient. In addition, if the hoist or steel cable 72 is damaged, the anti-fall mechanism 8 can limit the fall of the cage 6, effectively improving the hoisting efficiency and safety at the roof high-low span opening. Furthermore, the gantry frame body 1 can be adjusted to adapt to different roof high-low span structures, improving the versatility of hoisting construction for different roof high-low spans.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A hoisting device for roof openings of varying heights, characterized in that: The system includes a gantry frame body (1), a main beam (2), a trolley (3), a first drive mechanism (4), a second drive mechanism (5), a cage (6), a lifting mechanism (7), and a fall protection mechanism (8). The gantry frame body (1) is set on the roof and spans the roof's high and low span openings. The main beam (2) is slidably set on the gantry frame body (1). The trolley (3) is slidably set on the main beam (2). The first drive mechanism (4) is set on the gantry frame body (1) and is used to drive the main beam (2) to slide. The second drive mechanism (5) is set on the main beam (2) and is used to drive the trolley (3) to slide. The lifting mechanism (7) is set on the trolley (3) and is used to drive the cage (6) to rise and fall. The fall protection mechanism (8) is set on the gantry frame body (1) and is used to limit the cage (6) from falling when the lifting mechanism (7) is damaged.

2. The roof span hoisting equipment according to claim 1, characterized in that: The lifting mechanism (7) includes an electric hoist (71) and a steel rope (72). The electric hoist (71) is mounted on a trolley (3), and the steel rope (72) is mounted on the electric hoist (71). The steel rope (72) is hooked at the four corners of the cage (6).

3. The roof span hoisting equipment according to claim 1, characterized in that: The main body (1) of the gantry frame includes steel columns (11) and steel beams (12). Multiple steel columns (11) are provided on the roof. Multiple steel columns (11) are distributed in a high-low span array on the roof. The steel beams (12) are provided on adjacent steel columns (11). The main beam (2) is slidably provided on the steel beams (12).

4. The roof span hoisting equipment according to claim 3, characterized in that: A reinforcing rope (9) is installed on the steel beam (12), and the reinforcing rope (9) is tightened on the roof structure.

5. The roof span hoisting equipment according to claim 1, characterized in that: The fall arrest mechanism (8) includes a fall arrestor (81), a safety rope (82), and a restraining component (83). The fall arrestor (81) is mounted on the trolley (3) and connected to the cage (6). The safety rope (82) is mounted on the trolley (3). The restraining component (83) is mounted on the cage (6) and is used to lock onto the safety rope (82) when the cage (6) descends rapidly.

6. The roof span hoisting equipment according to claim 5, characterized in that: The limiting component (83) includes a tightening sleeve (831), a limiting sleeve (832), and a docking piece (833). The tightening sleeve (831) is mounted on the cage (6) and slidably fitted onto the safety rope (82). The tightening sleeve (831) is conical in shape and has multiple deformation slots. The limiting sleeve (832) is slidably fitted onto the safety rope (82) and is flexibly connected to the tightening sleeve. The limiting sleeve (832) is located on the bottom of the tightening sleeve (831) and has a tapered hole for the tightening sleeve (831) to be inserted. The limiting sleeve (832) falls along the safety rope (82) at a speed less than the free fall speed of the cage (6). The docking piece (833) is provided on the limiting sleeve (832) and is used to position the limiting sleeve (832) when the tightening sleeve (831) is pressed against the limiting sleeve (832).

7. A roof span hoisting device according to claim 6, characterized in that: The docking component (833) includes a plug rod (8331), a plug block (8332), and a telescopic spring (8333). The plug rod (8331) is mounted on the limiting sleeve (832). The plug block (8332) is slidably mounted on the plug rod (8331). The plug block (8332) is provided with an arc-shaped surface for driving the plug block (8332) to slide into the plug rod (8331) when it abuts against the cage (6). The telescopic spring (8333) is mounted on the plug rod (8331) and is used to drive the plug block (8332) to slide away from the plug rod (8331). The cage (6) is provided with a docking hole for inserting the plug rod (8331).

8. A roof span hoisting device according to claim 3, characterized in that: The steel column (11) is provided with a locking mechanism (10) for locking the steel beam (12). The locking mechanism (10) includes a locking seat (101), a connecting bolt (102) and a positioning component (103). The locking seat (101) is slidably disposed on the steel column (11). The steel beam (12) is inserted into the locking seat (101). The connecting bolt (102) is disposed on the locking seat (101) and passes through the steel beam (12). The positioning component (103) is disposed on the locking seat (101) and is used to position the locking seat (101) on the steel column (11).

9. A roof span hoisting device according to claim 8, characterized in that: The positioning assembly (103) includes a positioning bolt (1031) and a clamping member (1032). The steel column (11) has a plurality of positioning holes spaced apart. The positioning bolt (1031) is disposed on the locking seat (101) and passes through the positioning hole. The clamping member (1032) is disposed on the locking seat (101) and is used to clamp onto the steel column (11).

10. A roof opening hoisting device according to claim 9, characterized in that: The clamping member (1032) includes a clamping plate (10321), a clamping screw (10322), a support plate (10323), and a spreading screw (10324). Two clamping plates (10321) are slidably arranged on the locking seat (101), and the two clamping plates (10321) are respectively located on both sides of the steel column (11). The clamping screw (10322) is rotatably arranged on the locking seat (101) and is used to drive the two clamping plates (10321) to move closer or further away from each other. Two support plates (10323) are slidably arranged on the locking seat (101), and the two support plates (10323) are respectively located between the two inner side walls of the steel column (11). The spreading screw (10324) is rotatably arranged on the locking seat (101) and is used to drive the two support plates (10323) to move closer or further away from each other.

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