A jig suitable for roof structure construction and a construction method thereof

Abstract

The application discloses a cradle frame suitable for roof structure construction and a construction method thereof, and belongs to the technical field of building construction, and comprises a plurality of cradle frame units, wherein each cradle frame unit comprises a cradle frame plate and a base connected with the ground, the base is provided with a hollow mounting frame, a supporting frame connected with the bottom of the cradle frame plate is vertically and slidably arranged in the mounting frame, the supporting frame comprises a plurality of section frame bodies, and adjacent frame bodies are detachably connected; a hydraulic jacking device is arranged on the base, and a jacking plate is arranged at the output end of the hydraulic jacking device; a ring-shaped lifting frame is slidably connected to the inner wall of the mounting frame, the lifting frame is sleeved on the supporting frame, a traction equipment for driving the lifting frame to move is arranged on the mounting frame, and the lifting frame and adjacent frame bodies are detachably connected; the purpose of the application is to solve the problem that the grid steel structure in the roof structure is weak, has poor pressure bearing capacity, is difficult to be synchronously assembled with the upper roof steel truss steel structure, and leads to the problem that the construction difficulty of the theatre roof structure is large.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, specifically relating to a formwork suitable for roof structure construction and its construction method. Background Technology

[0002] As public buildings continue to develop, their functions and structures are becoming increasingly complex, with various large-span steel structures constantly emerging. Among them, the roof structure of the top of a large theater tower, due to its large span and in order to meet the needs of theater performances, often requires the installation of a grid steel structure under its truss steel structure. However, the grid steel structure is weak and has poor load-bearing capacity, making it difficult to assemble simultaneously with the upper roof steel truss steel structure, resulting in great difficulty in the construction of the theater roof structure. Summary of the Invention

[0003] In view of this, the present invention discloses a formwork and construction method suitable for roof structure construction, the purpose of which is to solve the problem that the grid steel structure in the roof structure is weak, has poor load-bearing capacity, and is difficult to assemble synchronously with the upper roof steel truss steel structure, which leads to the great difficulty in the construction of the theater roof structure.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A formwork for roof structure construction includes several formwork units. Each formwork unit includes a formwork plate and a base connected to the ground. A hollow mounting frame is mounted on the base. A support frame, vertically slidably mounted within the mounting frame and connected to the bottom of the formwork plate, is also provided. The support frame includes several sections, with adjacent sections detachably connected and the bottom section detachably connected to the base. Openings for the sections to enter and exit are provided on the side walls of the mounting frame. A hydraulic jacking device is mounted on the base, with a jacking plate at its output end. A ring-shaped lifting frame is slidably connected to the inner wall of the mounting frame and fitted onto the support frame. A traction device for driving the lifting frame is mounted on the mounting frame, and the lifting frame is detachably connected to adjacent sections. Each formwork plate has an assembly platform for supporting the roof structure.

[0006] After installing the base, place the frame onto the lifting plate through the opening, and use a hydraulic lifting device to lift the frame upwards a certain distance. Connect the frame to the supporting frame, and then use a traction device to move the frame upwards a certain distance. Next, use the hydraulic lifting device to lift the second frame until it abuts against the first frame, and connect the two. Repeat the above operation until the height of the support frame meets the requirements. The entire operation process is simple and quick, and installation can be completed without excessive hoisting, while also meeting the construction needs of various heights.

[0007] Then, the truss steel structure of the roof structure is assembled on the assembly platform, and then the truss steel structure is lifted a certain distance and suspended. Next, the connection between the bottom frame and adjacent frames and the base is removed. Using traction equipment, the remaining frames are lifted a certain distance, and then the bottom frame is moved out. Then, using traction equipment, the remaining frames are moved downwards until they contact the base, and the lifting frame is adjusted upwards to connect with the previous structural section. This process is repeated until the distance between the formwork plate and the truss steel structure meets the construction requirements, and then the grid steel structure is assembled. In this scheme, after the truss steel structure is lifted, the height of the formwork unit is reduced, thus providing sufficient space for the assembly of the grid steel structure. The assembly is performed in two stages, effectively preventing the grid steel structure from bearing pressure and causing damage to the roof structure.

[0008] Furthermore, the assembly platform includes several supports, each support including a mounting base and a load-bearing plate detachably connected to the roof structure. A rotating shaft, fixedly connected to a frame plate, is coaxially rotatably connected to the center of the mounting base. A rotating device for driving the rotating shaft is provided on the frame plate. The mounting base has two horizontal and parallel sliding grooves, each slidably connected to a base. The base has parallel adjusting grooves, each slidably connected to an adjusting seat. Several sets of vertically distributed scissor units are arranged between the mounting base and the load-bearing plate. Each scissor unit includes two load-bearing rods hinged together in the middle, with the ends of adjacent vertical load-bearing rods... The load-bearing rods are hinged together; the end of the load-bearing rod at the bottom is hinged to the adjusting seat, and the end of the load-bearing rod at the bottom is hinged to the end of the base; the end of the load-bearing rod at the top is hinged to a guide seat, and the end of the load-bearing rod at the top is hinged to the bottom of the load-bearing plate; the bottom of each load-bearing plate is provided with several guide grooves corresponding to the sliding grooves, and the guide seats are slidably connected to the corresponding guide grooves; a support seat slides in the sliding groove, and a hydraulic push structure is provided on the support seat. The output end of the hydraulic push structure passes through the base and is connected to the adjusting seat; positioning pins are detachably connected between the base and the sliding groove, between the support seat and the sliding groove, and between the adjusting seat and the adjusting groove.

[0009] In this solution, when errors occur in the distance or angle between individual truss steel structures and position adjustments are needed, the angle of the individual truss steel structure is adjusted by rotating the mounting base; then, the positioning pin between the base and the slide is removed, and the base is pushed using a hydraulic push structure, which in turn moves the individual truss structure on the load-bearing plate horizontally; then, the positioning pin between the base and the slide is reset, and the positioning pin between the support base and the slide is removed, and the adjusting base is pushed using a hydraulic push structure, which in turn moves the load-bearing plate vertically through the scissor lift unit, thereby adjusting the height between the individual truss steel structures and completing the assembly of the individual truss steel structures; the same method is used when the position of the grating steel structure needs to be adjusted.

[0010] In addition, during the first lifting of the truss steel structure, the positioning pins between the base and the slide are kept stationary. Then, the positioning pins between the adjusting seat and the adjusting groove, and between the support seat and the slide are removed. The truss steel structure is then lifted a certain distance by the lifting equipment and suspended. Throughout the process, the lifting of the scissor lift unit is used to maintain the connection between the load-bearing plate and the truss steel structure, while also providing a certain support force for the truss steel structure. Then, the height of each jig unit is lowered one by one, and single grid steel structures are assembled on the jig units that have been lowered in sequence. This gradually unloads the support force, reduces the weight change of the roof structure during the installation of the grid steel structure, and allows the cable force of the lifting equipment to be gradually adjusted, avoiding excessive stress changes that could lead to deformation of the roof structure.

[0011] Furthermore, the tire frame plate has several grooves facing its center on its periphery. A horizontally arranged rotating shaft is rotatably connected between the grooves and the sidewalls. A connecting rod parallel to the groove is fixed on each rotating shaft. A support sleeve is provided between adjacent connecting rods. The end of the connecting rod is slidably connected to the end of the corresponding support sleeve. A limit pin for limiting the sliding of the connecting rod is detachably provided on the support sleeve.

[0012] In this solution, when the height of the jig unit needs to be adjusted, the limiting pin on its adjacent support cylinder is removed, allowing the connecting rod to slide relative to the support cylinder. After the height of the jig unit is adjusted, the limiting pin is reset, and the adjacent jig units apply a certain traction force to it using the connecting rod and support cylinder to prevent it from tipping over. At the same time, the connecting rod and support cylinder can form a protective net to prevent construction workers from falling due to the height difference between jig units.

[0013] Furthermore, the lifting frame includes several annular blocks, and a connecting frame is provided between adjacent annular blocks. Each connecting frame has a through hole, and the traction rope of the traction device passes through the through hole from top to bottom and is fixedly connected to all annular blocks. Several lifting protrusions are horizontally slidably provided on the inner wall of each annular block, and several U-shaped connecting pieces are provided on the side wall of the frame. Several lifting protrusions are horizontally slidably connected on the inner wall of the lifting frame. The lifting protrusions engage with the corresponding connecting pieces, and the lifting protrusions and connecting pieces are detachably connected.

[0014] In this solution, when the lifting frame needs to slide relative to the support frame, the lifting protrusion on the sliding annular block is used to misalign the lifting protrusion with the connector; when the lifting frame needs to connect with the support frame, the lifting protrusion is simply slid to engage and fix it with the connector, making the entire operation simple and quick; at the same time, the lifting frame includes multiple annular blocks to balance the traction force exerted by the lifting frame on the support frame, which can reduce metal fatigue between the lifting protrusion and the connector.

[0015] Furthermore, a support frame is slidably fitted onto the support frame, and a through groove is vertically opened on the inner wall of the support frame for the connector to pass through. Insertion slots corresponding to the connectors are opened on all sides of the support frame, and positioning rods are provided in each insertion slot. Anti-tipping rods that are connected to the top of the mounting frame are inclined downwards on the outer wall of the support frame.

[0016] Furthermore, a support rod is provided between the hinge points of horizontally adjacent scissor units on the same mounting base.

[0017] Furthermore, several diagonal braces are provided between the mounting frame and the base.

[0018] A construction method for a formwork suitable for roof structure construction includes the following steps:

[0019] 1) Install the frame: Install the corresponding number of frame units according to the specifications of the roof structure, fix the base of the frame unit to the ground, and install the support frame and traction equipment in place;

[0020] 2) Height Adjustment of the Frame Unit: Place the frame on the lifting plate through the opening, and use the hydraulic lifting device to lift the frame upwards a certain distance, so that the frame is inserted into the annular block at the bottom, ensuring that the connecting piece on the frame is at the same level as the corresponding lifting protrusion on the annular block; at this time, slide the lifting protrusion so that the lifting protrusion is engaged with the corresponding connecting piece, and fix the connecting piece to the lifting protrusion. Then, use the traction device and lifting frame to lift the frame upwards a certain distance; then control the hydraulic lifting device and lifting plate to reset, place the next frame on the lifting plate, and use the hydraulic lifting device to lift the frame upwards a certain distance, and then use the traction device and lifting frame to lift the frame upwards a certain distance. The lifting frame moves the installed frame downwards a certain distance until the frames abut against each other. Then, the connections between the frames are fixed, and the connection between the connector and the lifting protrusion is released. The lifting protrusion is reset, and the lifting frame is moved downwards by the traction device. Always keep the lifting protrusion on the bottom ring block and the connector on the bottom frame at the same level. Ensure that the lifting protrusions on the other ring blocks and the connectors on the corresponding height frames at the same level. Slide the lifting protrusion again so that it engages with the corresponding connector, and fix the connector to the lifting protrusion. Repeat the above process until the height of the support frame meets the construction requirements.

[0021] Then insert the positioning rod into the corresponding insertion slot on the support frame to complete the connection between the support frame and the support bracket, and fix the bottom frame to the base;

[0022] 3) Installation of the frame plate: After the top of the highest frame extends out of the support frame, install the frame plate on the top of the frame, and install the assembly platform at the same time. Connect the support sleeve to the corresponding connecting rod and install the limit pin.

[0023] 4) Installation of lifting equipment: Install lifting equipment at the top of the vertical structure of the building, and install two layers of temporary connection devices on the side walls of the vertical structure;

[0024] 5) Truss steel structure assembly: Install positioning pins between the support base and the slide groove, and between the base and the slide groove. Use a hydraulic push structure to push the adjusting seat to slide in the adjusting groove, thereby causing the load-bearing rod to deflect and thus adjust the height of the load-bearing plate to precisely control the height; then install positioning pins to fix it between the adjusting seat and the adjusting groove; then install the truss steel structure of the roof structure frame by frame on the load-bearing plate of the assembly platform, and connect the load-bearing plate to the truss steel structure.

[0025] When errors occur in the distance or angle between individual truss steel structures and position adjustments are needed, the angle of the individual truss steel structure is adjusted by rotating the mounting base; then the positioning pin between the base and the slide is removed, and the base is pushed by a hydraulic push structure, which in turn moves the individual truss structure on the load-bearing plate horizontally; then the positioning pin between the base and the slide is reset, and the positioning pin between the support base and the slide is removed, and the adjusting base is pushed by a hydraulic push structure, which in turn moves the load-bearing plate vertically through the scissor lift unit, thereby adjusting the height between the individual truss steel structures, and thus completing the assembly of the individual truss steel structures;

[0026] 6) Initial Lifting: Connect and fix the traction rope of the lifting equipment to the truss steel structure, keeping the positioning pins between the base and the slide rail stationary. Then remove the positioning pins between the adjusting seat and the adjusting groove, and between the support seat and the slide rail. Next, apply traction force to the truss steel structure using the lifting equipment to lift it up until the truss steel structure is directly facing the temporary connection device at the bottom. Keep the truss steel structure suspended and install temporary rods between the truss steel structure and the temporary connection device for support. Then reset the positioning pins between the adjusting seat and the adjusting groove, and between the support seat and the slide rail. Throughout the process, the lifting and lowering of the scissor lift unit is used to maintain the connection between the load-bearing plate and the truss steel structure, while also providing a certain amount of support for the truss steel structure.

[0027] 7) Installation of the grating steel structure: Remove the connection between the load-bearing plate on one of the frame units at the edge and the truss steel structure, remove the positioning pin between the adjusting seat and the adjusting groove, and use hydraulic push structure to drive the adjusting seat to reset, thereby driving the load-bearing plate to descend; remove the positioning rod, and remove the connection between the bottom frame and the base.

[0028] Disconnect the bottom frame from the adjacent frame, use traction equipment to lift the remaining frame upwards a certain distance, and then move the bottom frame out; then use traction equipment to move the remaining frame downwards until it contacts the base, and adjust the lifting frame upwards to connect the lifting frame with the previous section of the structure; repeat the above operation until the distance between the jig plate and the truss steel structure meets the construction requirements; then reset the positioning rod and restore the connection between the bottom frame and the base;

[0029] Then, assemble the single grid steel structure on the load-bearing plate. Based on the method of adjusting the position of the single truss structure in the assembly of the truss steel structure in step 5), adjust the position of the single grid steel structure in the same way until the single grid steel structure contacts the truss steel structure and then connect and fix the two.

[0030] Repeat the above steps until the grating steel structure is assembled.

[0031] 8) Secondary lifting: Simultaneously dismantle the connection between the grid steel structure and the load-bearing plate, and the connection between the truss steel structure and the temporary connection device at the bottom. Then, use lifting equipment to move the roof structure to face the temporary connection device at the top. Install temporary members on the truss steel structure and the corresponding temporary connection device, and then fill in the missing connecting members between the roof structure and the vertical structure. Finally, dismantle the lifting equipment, the frame unit, and the temporary members.

[0032] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0033] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0034] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0035] Figure 2 This is a longitudinal sectional view of the tire frame unit in an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram showing the connection between the annular block and the frame in an embodiment of the present invention;

[0037] Figure 4 This is a cross-sectional view of the connection between the support frame and the frame body in an embodiment of the present invention;

[0038] Figure 5 This is a longitudinal sectional view of the assembly platform in an embodiment of the present invention;

[0039] Figure 6 This is a schematic diagram of the truss steel structure during assembly in an embodiment of the present invention;

[0040] Figure 7 This is a schematic diagram of the assembling of the grating steel structure in an embodiment of the present invention.

[0041] The following components are labeled in the attached diagram: 1. Base plate; 2. Mounting frame; 3. Frame body; 4. Hydraulic lifting device; 5. Lifting plate; 6. Ring block; 7. Traction device; 8. Mounting seat; 9. Load-bearing plate; 10. Rotating shaft; 11. Base; 12. Adjusting seat; 13. Load-bearing rod; 14. Guide seat; 15. Hydraulic push structure; 16. Rotating shaft; 17. Connecting rod; 18. Support sleeve; 19. Connecting frame; 20. Lifting protrusion; 21. Connecting piece; 23. Support frame; 24. Positioning rod; 25. Through groove; 26. Anti-overturning rod; 27. Diagonal brace; 28. Base plate; 29. ​​Truss steel structure; 30. Grating steel structure; 31. Vertical structure; 32. Lifting device; 33. Temporary connecting seat; 34. Support seat. Detailed Implementation

[0042] like Figures 1-7 As shown:

[0043] A formwork for roof structure construction includes several formwork units. Each formwork unit includes a formwork plate 2 and a base 1 connected to the ground. A hollow mounting frame 3 is mounted on the base 1. The mounting frame 3 has perforations on its periphery to facilitate operation of the frame structure 4 by construction personnel. A support frame, connected to the bottom of the formwork plate 2, is vertically slidably mounted inside the mounting frame 3. The support frame includes several frame sections 4, adjacent frame sections 4 are detachably connected by bolts, and the bottom frame section 4 is detachably connected to the base 1. An opening is provided on the side wall of the mounting frame 3 for the frame body 4 to enter and exit; a hydraulic lifting device 5 is fixed to the base 1 by bolts, and a lifting plate 6 is welded to the output end of the hydraulic lifting device 5; an annular lifting frame is slidably connected to the inner wall of the mounting frame 3, the lifting frame is sleeved on the support frame, and a traction device 8 for driving the lifting frame to move is provided on the mounting frame 3. The lifting frame is detachably connected to the adjacent frame body 4 by bolts; an assembly platform for supporting the roof structure is provided on each of the jig plates 2.

[0044] The base 1 is bolted to the ground, and the frame 4 is placed on the lifting plate 6 through the opening. The frame 4 is then lifted upwards by the hydraulic lifting device 5, and connected to the supporting frame. The traction device 8 is then used to move the frame 4 upwards a certain distance. The second frame 4 is then lifted by the hydraulic lifting device 5 until it abuts against the first frame 4, and the two are connected. The above operation is repeated until the height of the support frame meets the requirements. The entire operation is simple and quick, and the installation can be completed without excessive hoisting, while also meeting the construction needs of various heights.

[0045] Then, the truss steel structure 29 of the roof structure is assembled on the assembly platform, and then the truss steel structure 29 is lifted a certain distance and suspended. Next, the connection between the bottom frame 4 and the adjacent frame 4 and base 1 is removed. Using the traction device 8, the remaining frame 4 is lifted a certain distance, and then the bottom frame 4 is moved out. Then, the traction device 8 is used to move the remaining frame 4 downwards until it contacts the base 1, and the lifting frame is adjusted upwards to connect with the previous section of the structure. The above operations are repeated until the distance between the jig plate 2 and the truss steel structure 29 meets the construction requirements, and then the grid steel structure 30 is assembled. In this scheme, after the truss steel structure 29 is lifted, the height of the jig unit is reduced, thus providing sufficient space for the assembly of the grid steel structure 30. The assembly is performed in two stages, effectively preventing the grid steel structure 30 from bearing pressure and causing damage to the roof structure.

[0046] In this embodiment, the assembly platform includes several supports, each support including a mounting base 9 and a load-bearing plate 10 detachably connected to the roof structure. A rotating shaft 17, fixedly connected to the frame plate 2, is coaxially rotatably connected to the center of the mounting base 9. A rotating device for driving the rotating shaft 17 is provided on the frame plate 2; in this embodiment, the rotating device is a motor. Two horizontal and parallel sliding grooves are provided on the mounting base 9, each slidably connected to a base 12. An adjustment groove parallel to the base 12 is provided on the base 12, and an adjustment seat 13 is slidably connected to the adjustment groove. Several sets of vertically distributed scissor units are provided between the mounting base 9 and the load-bearing plate 10. Each scissor unit includes two load-bearing rods 14 hinged together in the middle, with the ends of adjacent vertically connected. The end of the load-bearing rod 14 located at the bottom is hinged to the adjustment... The base 13 is hinged, and the end of the load-bearing rod 14 at the bottom is hinged to the end of the base 12; the end of the load-bearing rod 14 at the top is hinged to a guide seat 15, and the end of the load-bearing rod 14 at the top is hinged to the bottom of the load-bearing plate 10; the bottom of the load-bearing plate 10 is provided with several guide grooves corresponding to the slide groove, and the guide seat 15 is slidably connected to the corresponding guide groove; a support seat 34 slides in the slide groove, and a hydraulic push structure 16 is fixed to the support seat 34 by bolts. The hydraulic push structure 16 is parallel to the slide groove, and the output end of the hydraulic push structure 16 passes through the base 12 and is connected to the adjusting seat 13; positioning pins (positioning pins are a conventional technical means for those skilled in the art, so they are not shown in the figure) can be detachably connected between the base 12 and the slide groove, between the support seat 34 and the slide groove, and between the adjusting seat 13 and the adjusting groove.

[0047] In this scheme, when errors occur in the distance or angle between individual truss steel structures 29 and position adjustments are needed, the angle of the individual truss steel structure 29 is adjusted by rotating the mounting base 9; then, the positioning pin between the base 12 and the slide is removed, and the base 12 is pushed by the hydraulic push structure 16, thereby causing the individual truss structure on the load-bearing plate 10 to move horizontally; then, the positioning pin between the base 12 and the slide is reset, and the positioning pin between the support base 34 and the slide is removed, and the adjusting seat 13 is pushed by the hydraulic push structure 16, thereby causing the load-bearing structure to move vertically through the scissor unit, thereby adjusting the height between the individual truss steel structures 29, and thus completing the assembly of the individual truss steel structures 29; when the position of the grid steel structure 30 needs to be adjusted, the same method can be used.

[0048] In addition, during the first lifting of the truss steel structure 29, the positioning pins between the base 12 and the slide are kept stationary. Then, the positioning pins between the adjusting seat 13 and the adjusting groove, and between the support seat 34 and the slide are removed. The truss steel structure 29 is then lifted a certain distance by the lifting equipment 32 and suspended. Throughout the process, the lifting of the scissor lift unit is used to keep the load-bearing plate 10 connected to the truss steel structure 29, while also providing a certain support force for the truss steel structure 29. Then, the height of the frame unit is lowered one by one, and the single grid steel structure 30 is assembled on the frame unit that has been lowered in sequence. This gradually unloads the support force, reduces the weight change of the roof structure caused by the installation of the grid steel structure 30, and allows the cable force of the lifting equipment 32 to be gradually adjusted, avoiding excessive stress changes that could lead to deformation of the roof structure.

[0049] In this embodiment, the two sides of the tire frame plate are provided with several grooves facing the center. The grooves are rotatably connected to the side walls by horizontally arranged rotating shafts 17. Each rotating shaft 17 is fixed with a connecting rod 18 parallel to the groove. A support sleeve 19 is provided between adjacent connecting rods 18. The end of the connecting rod 18 is slidably connected to the end of the corresponding support sleeve. The support sleeve 19 is detachably provided with a limiting pin for restricting the sliding of the connecting rod 18 (the positioning pin is a conventional technical means for those skilled in the art, so it is not shown in the figure).

[0050] In this solution, when the height of the jig unit needs to be adjusted, the limiting pin on its adjacent support cylinder is removed, allowing the connecting rod 18 to slide relative to the support cylinder. After the height of the jig unit is adjusted, the limiting pin is reset, and the adjacent jig units apply a certain traction force to it using the connecting rod 18 and the support cylinder to prevent it from tipping over. At the same time, the connecting rod 18 and the support cylinder can form a protective net to prevent construction workers from falling due to the height difference between jig units.

[0051] In this embodiment, the lifting frame includes several annular blocks 7, and a connecting frame 20 is provided between adjacent annular blocks 7. Each connecting frame 20 has a through hole. The traction rope of the traction device 8 passes through the through hole from top to bottom and is fixedly connected to all annular blocks 7. Several lifting protrusions 21 are horizontally slidably provided on the inner wall of each annular block 7. Several connecting pieces 2 with a U-shaped longitudinal section are provided on the side wall of the frame body 4. Several lifting protrusions 21 are horizontally slidably connected on the inner wall of the lifting frame. The lifting protrusions 21 are engaged with the corresponding connecting pieces 2, and the lifting protrusions 21 and the connecting pieces 2 are detachably connected.

[0052] In this solution, when the lifting frame needs to slide relative to the support frame, the lifting protrusion 21 on the sliding annular block 7 is slid to make the lifting protrusion 21 misaligned with the connector 2; when the lifting frame needs to be connected to the support frame, the lifting protrusion 21 is simply slid to engage and fix it with the connector 2, making the whole operation simple and quick; at the same time, the lifting frame includes multiple annular blocks 7, which balance the traction force exerted by the lifting frame on the support frame and can reduce metal fatigue between the lifting protrusion 21 and the connector 2.

[0053] In this embodiment, a support frame 23 is slidably sleeved on the support frame. A through groove 25 for the connector 2 to pass through is vertically opened on the inner wall of the support frame 23. An insertion groove corresponding to the connector 2 is opened on all sides of the support frame 23. A positioning rod 24 is provided in each insertion groove. A downwardly inclined anti-tipping rod 26 is integrally formed on the outer wall of the support frame 23. The end of the anti-tipping rod 26 is welded and fixed to the top of the mounting frame 3.

[0054] The anti-overturning rod 26 and the support frame 23 are used to apply auxiliary support force to the support frame to prevent the support frame from overturning.

[0055] In this implementation, support rods are welded and fixed between the hinge points of horizontally adjacent scissor lift units on the same mounting base 9, so that the scissor lift units on the same mounting base 9 can be adjusted synchronously.

[0056] In this embodiment, a number of diagonal braces 27 are welded between the mounting frame 3 and the base 1, and the diagonal braces 27 are distributed in a circular array.

[0057] The mounting frame 3 is supported by the diagonal brace 27 to prevent it from tipping over.

[0058] A construction method for a formwork suitable for roof structure construction includes the following steps:

[0059] 1) Install the frame: Install the corresponding number of frame units according to the specifications of the roof structure, fix the base 1 of the frame unit to the ground, and install the support frame 23 and traction equipment 8 in place;

[0060] 2) Height Adjustment of the Carrier Unit: Place the carrier 4 on the lifting plate 6 through the opening, and lift the carrier 4 upwards by the hydraulic lifting device 5, so that the carrier 4 is inserted into the annular block 7 at the bottom, ensuring that the connecting piece 2 on the carrier 4 and the corresponding lifting protrusion 21 on the annular block 7 are at the same level; at this time, slide the lifting protrusion 21 so that the lifting protrusion 21 is engaged in the corresponding connecting piece 2, and fix the connecting piece 2 and the lifting protrusion 21, and then lift the carrier 4 upwards by the traction device 8 and the lifting frame; then control the hydraulic lifting device 5 and the lifting plate 6 to reset, and place the next carrier 4 on the lifting plate 6, and lift the carrier 4 upwards by the hydraulic lifting device 5, and then lift the carrier 4 upwards by the traction device 8 and the lifting frame. The lifting frame moves the installed frame 4 downwards a certain distance until the frame 4 abuts against each other. Then, the connection between the frame 4 is fixed, and the connection between the connector 2 and the lifting protrusion 21 is released. The lifting protrusion 21 is reset, and the lifting frame is moved downwards by the traction device 8. The lifting protrusion 21 on the bottom annular block 7 and the connector 2 on the bottom frame 4 are always kept at the same level. The lifting protrusion 21 on the other annular blocks 7 is also kept at the same level as the connector 2 on the corresponding height frame 4. The lifting protrusion 21 is slid again so that it is engaged in the corresponding connector 2, and the connector 2 and the lifting protrusion 21 are fixed. The above process is repeated until the height of the support frame meets the construction requirements.

[0061] Then, the positioning rod 24 is inserted into the corresponding insertion slot on the support frame 23 to complete the connection between the support frame 23 and the support frame, and the bottom frame 4 is fixed to the base 1.

[0062] 3) Installation of the frame plate 2: After the top of the highest frame 4 extends out of the support frame 23, install the frame plate 2 on the top of the frame 4, and install the assembly platform at the same time. Connect the support sleeve 19 to the corresponding connecting rod 18 and install the limit pin.

[0063] 4) Installation of lifting equipment 32: Install lifting equipment 32 at the top of the vertical structure 31 of the building, and install two layers of temporary connection devices on the side wall of the vertical structure 31.

[0064] 5) Assembly of truss steel structure 29: Install positioning pins between support seat 34 and slide groove, and between base 12 and slide groove. Use hydraulic push structure 16 to push adjustment seat 13 to slide in adjustment groove, thereby driving load-bearing rod 14 to deflect, thereby adjusting the height of load-bearing plate 10 and precisely controlling the height; then install positioning pins to fix between adjustment seat 13 and adjustment groove; then install the truss steel structure 29 of the roof structure one by one on the load-bearing plate 10 of the assembly platform, and connect the load-bearing plate 10 to the truss steel structure 29.

[0065] When errors occur in the distance or angle between individual truss steel structures 29 and position adjustments are needed, the angle of the individual truss steel structure 29 is adjusted by rotating the mounting base 9; then the positioning pin between the base 12 and the slide is removed, and the base 12 is pushed by the hydraulic push structure 16, thereby causing the individual truss structure on the load-bearing plate 10 to move horizontally; then the positioning pin between the base 12 and the slide is reset, and the positioning pin between the support base 34 and the slide is removed, and the adjustment base 13 is pushed by the hydraulic push structure 16, thereby causing the load-bearing structure to move vertically through the scissor unit, thereby adjusting the height between the individual truss steel structures 29, and thus completing the assembly of the individual truss steel structures 29;

[0066] 6) Initial Lifting: Connect and fix the traction rope of the lifting device 32 to the truss steel structure 29, keeping the positioning pin between the base 12 and the slide rail stationary. Then remove the positioning pins between the adjusting seat 13 and the adjusting groove, and between the support seat 34 and the slide rail. Then apply traction force to the truss steel structure 29 through the lifting device 32 to drive it up until the truss steel structure 29 is directly facing the temporary connection device at the bottom. Keep the truss steel structure 29 suspended and install temporary rods between the truss steel structure 29 and the temporary connection device for support. Then reset the positioning pins between the adjusting seat 13 and the adjusting groove, and between the support seat 34 and the slide rail. Throughout the process, the lifting and lowering of the scissor lift unit is used to keep the load-bearing plate 10 connected to the truss steel structure 29, while also providing a certain support force for the truss steel structure 29.

[0067] 7) Installation of the grating steel structure 30: Remove the connection between the load-bearing plate 10 on one of the frame units at the edge and the truss steel structure 29, remove the positioning pin between the adjusting seat 13 and the adjusting groove, and use the hydraulic push structure 16 to drive the adjusting seat 13 to reset, thereby driving the load-bearing plate 10 to descend; remove the positioning rod 24, and remove the connection between the bottom frame 4 and the base 1.

[0068] Disconnect the bottom frame 4 from the adjacent frame 4. Use the traction device 8 to lift the remaining frame 4 upwards by one distance, and then move the bottom frame 4 out. Then use the traction device 8 to move the remaining frame 4 downwards until it contacts the base 1, and adjust the lifting frame upwards to connect the lifting frame with the previous section of the structure. Repeat the above operation until the distance between the jig plate 2 and the truss steel structure 29 meets the construction requirements. Then reset the positioning rod 24 and restore the connection between the bottom frame 4 and the base 1.

[0069] Then, assemble a single grid steel structure 30 on the load-bearing plate 10. Based on the method of adjusting the position of the single truss structure during the assembly of the truss steel structure 29 (5), adjust the position of the single grid steel structure 30 in the same way until the single grid steel structure 30 contacts the truss steel structure 29 and connect and fix the two.

[0070] Repeat the above steps until the grating steel structure 30 is assembled.

[0071] 8) Secondary lifting: The connection between the grid steel structure 30 and the load-bearing plate 10 and the connection between the truss steel structure 29 and the bottom temporary connection device are simultaneously disassembled. Then, the roof structure is moved to face the top temporary connection device by the lifting equipment 32. Temporary members are installed on the truss steel structure 29 and the corresponding temporary connection device. Then, the connecting members between the roof structure and the vertical structure 31 are replaced. Then, the lifting equipment 32, the frame unit and the temporary members are removed.

[0072] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A jig suitable for use in the construction of a roof structure, characterised in that: The application relates to a tire rack unit, which comprises a tire rack plate and a base connected with the ground, a hollow mounting frame is arranged on the base, a support frame connected with the bottom of the tire rack plate is vertically slidably arranged in the mounting frame, the support frame comprises a plurality of section frame bodies, adjacent frame bodies are detachably connected, and the frame body at the bottom is detachably connected with the base; an opening for the frame body to enter and exit is arranged on the side wall of the mounting frame; a hydraulic lifting device is arranged on the base, and a lifting plate is arranged at the output end of the hydraulic lifting device; an annular lifting frame is slidably connected to the inner wall of the mounting frame, the lifting frame is sleeved on the support frame, a traction device for driving the lifting frame to move is arranged on the mounting frame, and the lifting frame is detachably connected with adjacent frame bodies; an assembling platform for supporting a roof structure is arranged on the tire rack plate; the assembling platform comprises a plurality of supports, the support comprises a mounting seat and a load-bearing plate detachably connected with the roof structure, a rotating shaft fixedly connected with the tire rack plate is coaxially and rotationally connected to the center of the mounting seat, and a rotating device for driving the rotating shaft to rotate is arranged on the tire rack plate; two horizontal and parallel sliding grooves are arranged on the mounting seat, a base is slidably arranged in the sliding groove, an adjusting groove parallel to the base is arranged on the base, an adjusting seat is slidably arranged in the adjusting groove, a plurality of groups of vertically-distributed scissor units are arranged between the mounting seat and the load-bearing plate, the scissor unit comprises two load-bearing rods which are hingedly connected at the middle part, and the end portions of the vertically-adjacent load-bearing rods are hingedly connected; the end portion of the load-bearing rod on the bottom side is hingedly connected with the adjusting seat, and the end portion of the load-bearing rod on the bottom side is hingedly connected with the end portion of the base; the end portion of the load-bearing rod on the top side is hingedly connected with a guide seat, and the end portion of the load-bearing rod on the top side is hingedly connected with the bottom of the load-bearing plate; a plurality of guide grooves corresponding to the sliding grooves are arranged on the bottom of the load-bearing plate, and the guide seat is slidably connected with the corresponding guide groove; a support seat is slidably arranged in the sliding groove, a hydraulic pushing structure is arranged on the support seat, and the output end of the hydraulic pushing structure penetrates through the base and is connected with the adjusting seat; positioning pins are detachably arranged between the base and the sliding groove, between the support seat and the sliding groove, and between the adjusting seat and the adjusting groove; a plurality of recesses are arranged on the periphery of the tire rack plate and face the center, rotating shafts are rotationally connected between the recesses opposite the side wall, connecting rods parallel to the recesses are fixedly arranged on the rotating shafts, support sleeves are arranged between adjacent connecting rods, the end portions of the connecting rods are coaxially and slidably connected with the end portions of the corresponding sleeves, and limiting pins for limiting the sliding of the connecting rods are detachably arranged on the support sleeves; the lifting frame comprises a plurality of annular blocks, connecting frames are arranged between adjacent annular blocks, through holes are arranged on the connecting frames, and traction ropes of the traction device are fixedly connected with all the annular blocks by penetrating through the through holes from top to bottom.The inner wall of the annular block is provided with a plurality of lifting protrusions horizontally sliding, the side wall of the frame is provided with a plurality of connecting pieces with U-shaped longitudinal section, the inner wall of the lifting frame is connected with a plurality of lifting protrusions horizontally sliding, the lifting protrusions are clamped with the corresponding connecting pieces, and the lifting protrusions and the connecting pieces are detachably connected.

2. The cradle according to claim 1, characterized in that: The support frame is sleeved with a support frame on the sliding, vertical through grooves are formed in the inner wall of the support frame for the connecting pieces, the support frame is provided with an insertion slot corresponding to the connecting piece on the circumferential side, and a positioning rod is arranged in the insertion slot.

3. The cradle according to claim 2, characterized in that: A support rod is arranged between the hinge points of horizontally adjacent scissor units on the same mounting seat.

4. The cradle according to claim 3, characterized in that: A plurality of inclined struts are arranged between the mounting frame and the base.

5. A construction method of a cradle for a roof structure construction according to claim 4, wherein The method comprises the following steps: 1) installing the jig frame: according to the specifications of the roof structure, a corresponding number of jig frame units are installed, the base of the jig frame unit is fixed to the ground, and the support frame and the traction equipment are installed in place; 2) height control of the jig frame unit: the frame body is placed on the lifting plate through the opening, and the frame body is lifted upward by a distance by the hydraulic lifting device, so that the frame body is inserted into the annular block at the bottom, and the connecting piece on the frame body is in the same horizontal plane as the lifting protrusion on the corresponding annular block; at this time, the lifting protrusion is slid, the lifting protrusion is clamped into the corresponding connecting piece, and the connecting piece and the lifting protrusion are fixed, then the frame body is lifted by a distance upward by the traction equipment and the lifting frame; then the hydraulic lifting device and the lifting plate are controlled to reset, and the next frame body is placed on the lifting plate, and the frame body is lifted upward by a distance by the hydraulic lifting device, then the installed frame body is moved downward by a distance by the traction equipment and the lifting frame, until the frame bodies abut against each other, then the frame bodies are fixedly connected, the connection between the connecting piece and the lifting protrusion is released, the lifting protrusion is reset, and the lifting frame is moved downward by the traction equipment, the lifting protrusion on the annular block at the bottom is always kept in the same horizontal plane as the connecting piece on the frame body at the bottom, and the lifting protrusions on the remaining annular blocks are kept in the same horizontal plane as the connecting pieces on the frame bodies at the corresponding height, the lifting protrusion is slid again, the lifting protrusion is clamped into the corresponding connecting piece, and the connecting piece and the lifting protrusion are fixed; the above process is repeated until the height of the support frame meets the construction requirements; Then the positioning rod is inserted into the corresponding insertion slot in the support frame to complete the connection of the support frame and the support frame, and the frame body at the bottom and the base are fixed; 3) installation of the jig plate: when the top of the highest frame body protrudes out of the support frame, the jig plate is installed at the top end of the frame body, the assembly platform is installed synchronously, the support sleeve is connected with the corresponding connecting rod, and the limiting pin is installed; 4) installation of the lifting equipment: the lifting equipment is installed at the top of the vertical structure of the building, and two layers of temporary connecting devices are installed on the side wall of the vertical structure; 5) truss steel structure assembly: positioning pins are installed between the support seat and the sliding groove, between the base and the sliding groove, the hydraulic pushing structure is used to push the adjusting seat to slide in the adjusting groove, so as to drive the load-bearing rod to deflect, thereby adjusting the height of the load-bearing plate and accurately controlling the height; then the positioning pins are installed between the adjusting seat and the adjusting groove to fix them; then the truss steel structure of the roof structure is installed on the load-bearing plate of the assembly platform piece by piece, and the load-bearing plate is connected with the truss steel structure. When the distance and angle between single truss steel structures need to be adjusted, the angle of single truss steel structure is adjusted by rotating the mounting seat; then the positioning pin between the base and the sliding groove is removed, the base is pushed by the hydraulic pushing structure, and the single truss structure on the bearing plate is horizontally moved; then the positioning pin between the base and the sliding groove is reset, the positioning pin between the support seat and the sliding groove is removed, the adjusting seat is pushed by the hydraulic pushing structure, and the bearing is vertically moved by the scissor unit, so as to adjust the height between single truss steel structures, and the assembly of single truss steel structures is completed; 6), preliminary lifting: the traction rope of the lifting device is connected and fixed with the truss steel structure, the positioning pin between the base and the sliding groove is kept, then the positioning pins between the adjusting seat and the adjusting groove and between the support seat and the sliding groove are removed; then the truss steel structure is lifted by the lifting device until the truss steel structure is opposite to the temporary connecting device of the bottom layer, the truss steel structure is kept hovering, and the temporary rod is installed between the truss steel structure and the temporary connecting device for support; then the positioning pins between the adjusting seat and the adjusting groove and between the support seat and the sliding groove are reset; during the whole process, the lifting of the scissor unit keeps the connection between the bearing plate and the truss steel structure, and provides a certain support force for the truss steel structure; 7), grid steel structure installation: the connection between the bearing plate on one of the edge frame units and the truss steel structure is removed, the positioning pin between the adjusting seat and the adjusting groove is removed, the adjusting seat is reset by the hydraulic pushing structure, and the bearing plate is lowered; The positioning rod is removed, and the connection between the bottom frame and the base is removed; The connection between the bottom frame and the adjacent frame is removed, the remaining frames are lifted by the traction device, the bottom frame is removed, then the remaining frames are moved down to contact the base, and the lifting frame is adjusted upward to connect with the previous structure; the above operation is repeated until the distance between the frame plate and the truss steel structure meets the construction requirements; then the positioning rod is reset, and the connection between the bottom frame and the base is restored; Then the single truss grid steel structure is assembled on the bearing plate, the same position adjustment is performed on the single truss grid steel structure based on the position adjustment of the single truss structure in the truss steel structure assembly, until the single truss grid steel structure contacts with the truss steel structure, and the two are connected and fixed; The above operation is repeated until the grid steel structure assembly is completed; 8), secondary lifting: the connection between the grid steel structure and the bearing plate and the connection between the truss steel structure and the temporary connecting device of the bottom layer are removed at the same time, then the roof structure is moved to be opposite to the temporary connecting device of the top layer by the lifting device; The temporary rod is installed between the truss steel structure and the corresponding temporary connecting device, and the connecting rod between the roof structure and the vertical structure is supplemented; then the lifting device, the frame unit and the temporary rod are removed.

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