Positioning and installing structure and method for fabricated building construction

Abstract

The application relates to the technical field of fabricated building, and discloses a positioning and mounting structure and method for fabricated building construction, two first threaded holes are symmetrically arranged on a moving block corresponding to the positions of extension columns, support structures are arranged in the two first threaded holes, the support structure comprises a first threaded column, a supporting ring and an extrusion contact block, the first threaded column is threadedly connected in the first threaded hole, the supporting ring is movably installed on the outer side of the first threaded column and can constrain the movement of an extrusion side plate, and the extrusion contact block is movably installed at the bottom end of the first threaded column and can extrude a pressing plate. In the application, when a prefabricated laminated board is impacted by pouring mud, the extrusion of the prefabricated laminated board by the connecting base can avoid the deviation of the position of the prefabricated laminated board in the pouring process, the positioning precision of the positioning plate can be effectively improved, the laminated board can be positioned and mounted conveniently, and the positioning effect is good.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building technology, and in particular to a positioning and installation structure and method for prefabricated building construction. Background Technology

[0002] Buildings assembled on-site from prefabricated components are called prefabricated buildings. These components are manufactured in a workshop, transported to the construction site, and then assembled by on-site pouring, making building components more standardized.

[0003] Composite floor slabs in prefabricated buildings are mainly composed of precast slabs and cast-in-place concrete composite layers. Multiple precast slabs are laid flat, with a post-cast strip of about 200 mm wide left between adjacent slabs. Concrete is then poured into the post-cast strip to connect and reinforce the precast slabs, forming a smooth composite layer on the multiple precast slabs. In existing technologies, the composite slabs often deviate in position due to improper initial placement or scouring of the composite slabs by slurry during pouring. In such cases, the components must be moved to adjust their position a second time. This practice can easily damage the formwork in contact with the composite slabs and the sealing structure between them, seriously affecting the installation effect of the composite slabs. Summary of the Invention

[0004] The present invention mainly addresses the technical problems existing in the prior art, and provides a positioning and installation structure and method for prefabricated building construction.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a positioning and installation structure for prefabricated building construction, comprising support beams, a support base plate, and prefabricated composite slabs. A support base plate is disposed above two support beams, and two prefabricated composite slabs are symmetrically disposed above the support base plate. A connecting base is snapped between the two prefabricated composite slabs on the upper side of the connecting base. An extension column is fixedly connected to the upper side of the connecting base, and a movable block is disposed on the extension column. The movable block can only move vertically along the axial direction of the extension column. A pressing side plate is movably installed on the bottom side of the movable block, and the two pressing side plates are positioned opposite each other. A pressure plate is fixedly connected to the corresponding side near the bottom. The moving block and the extrusion side plate are connected by a limiting swing structure set on the corresponding side. Two first threaded holes are symmetrically opened on the moving block at the position corresponding to the extension column. A support structure is set inside the two first threaded holes. The support structure includes a first threaded column, a support ring and an extrusion contact block. The first threaded column is threaded inside the first threaded hole. The support ring is movably installed on the outside of the first threaded column and can constrain the movement of the extrusion side plate. The extrusion contact block is movably installed at the bottom of the first threaded column and can extrude the pressure plate.

[0006] Preferably, the limiting swing structure includes two protrusions, which are symmetrically fixedly connected to one end of the moving block corresponding to the extrusion side plate. Each of the two protrusions has a rotating hole on one side corresponding to each other. A second rotating column is movably installed inside each of the two rotating holes. A connecting column is fixedly connected to one side corresponding to each other of the two second rotating columns. A connecting block is fixedly connected to the side of the connecting column away from the moving block. The side of the connecting block away from the connecting column is fixedly connected to the side of the extrusion side plate. The movement of the connecting column is constrained by a torsion spring disposed between the connecting column and the protrusion. One end of the torsion spring is fixedly connected to the end face of the connecting column and the other end is fixedly connected to the side of the protrusion. The second rotating column is disposed inside the torsion spring.

[0007] Preferably, the extrusion side plate has two symmetrically provided limiting grooves on one side of the moving block. The limiting grooves are rectangular grooves and are provided at the corners of the moving block. A limiting block is fixedly connected to the side of the protrusion corresponding to the position of the limiting groove.

[0008] Preferably, a groove is provided at the upper edge of the first threaded post, extending to the center of the first threaded post. A support ring is movably installed on the side of the slider away from the first threaded post. The support ring is a circular ring with a semi-circular cross-section and a flat outer surface. A rotating groove is provided at the lower end of the first threaded post. A rotating first post is movably installed inside the rotating groove. An extension block is fixedly connected to the side of the first rotating post corresponding to the lower part of the first threaded post. A pressing contact block is fixedly connected to the side of the extension block away from the first rotating post. The pressing contact block is located above the pressure plate. A contact groove is provided at the upper end of the pressure plate. The contact groove is a groove with a triangular cross-section. The pressing contact block is a triangular block that matches the contact groove.

[0009] Preferably, the upper end of the movable block is provided with an adapter groove, the adapter groove having a triangular cross-section, the extension column having a triangular cross-section, the extension column extending upward into the interior of the adapter groove, the upper end of the movable block is movably mounted with a pressing end that can link the up and down movement of the movable block, the upper end of the extension column is provided with a second threaded hole, the interior of the second threaded hole is threaded with a second threaded column, the upper end of the second threaded column is fixedly connected to the lower end of the pressing end, the upper end of the movable block is provided with a constraint cavity, the lower end of the pressing end is fixedly connected with a constraint ring corresponding to the position of the constraint cavity, the constraint ring is movably mounted inside the constraint cavity, the constraint cavity having an "L" shaped annular cavity, and the constraint ring having an "L" shaped annular cylinder.

[0010] Preferably, the upper side of the support base plate is fixedly connected to both sides of the connecting base, and the two fixed blocks are mirror images of each other on both sides of the connecting base. The two fixed blocks are provided with slots on the side that is close to each other. The side of the connecting base is fixedly connected to the slots, and the end of the adapter block away from the connecting base is fixedly connected to a card block that extends into the slot. The adapter block is made of long carbon chain nylon material.

[0011] A method for using a positioning and installation structure in prefabricated building construction;

[0012] The first step is to use a crane to transport the precast composite slab above the moving block and slowly control the descent speed of the precast composite slab;

[0013] Step 2: Start rotating the extrusion end. The extrusion end drives the second threaded column to rotate counterclockwise inside the second threaded hole. Through the engagement between the threads of the extrusion end and the second threaded column, the second threaded column moves downward. The second threaded column drives the extrusion end to move downward. The extrusion end drives the constraint ring to rotate inside the constraint cavity. The extrusion end and the moving block have a linkage capability, so that the extrusion end can drive the moving block to move downward. Adjust the moving block to the appropriate position. Rotate the first threaded column inside the first threaded hole. The first threaded column drives the support ring to move. The support ring moves to a position 4 cm away from the side of the extrusion side plate. The precast composite plate continues to move downward and extrudes the side of the extrusion side plate so that one side of the extrusion side plate is in close contact with the side of the support ring.

[0014] The third step is to continue moving the precast composite slab downwards. The bottom edge of the precast composite slab slides on the side of the extrusion side plate until it slides down from the side of the extrusion side plate to the top of the support base plate. At this time, the torsion spring recovers its elasticity and drives the connecting column to rotate. The connecting column drives the extrusion side plate and the second rotating column to rotate. When the limiting groove on the extrusion side plate is in contact with the limiting block, the movement of the extrusion side plate stops. At this time, the pressure plate moves to the top of the precast composite slab.

[0015] Step 4: After the pressure plate moves downward, it contacts and squeezes the top of the precast composite slab. The movement of the pressure plate is limited by the upper limit groove and the limit block of the squeeze side plate, so that the bottom side of the pressure plate and the upper side of the precast composite slab are at the same level.

[0016] Step 5: Rotate the first threaded column downwards. The first threaded column drives the extrusion contact block to move downwards. The extrusion contact block moves above the pressure plate to further extrude downwards on the pressure plate, increasing the extrusion force of the pressure plate on the precast composite slab.

[0017] Beneficial effects

[0018] This invention provides a positioning and installation structure and method for prefabricated building construction. It has the following beneficial effects:

[0019] (1) The positioning and installation structure and method for prefabricated building construction uses a pressing side plate to support the prefabricated slab during its downward movement, thereby aligning the sides of the prefabricated slab with the pressing side plate. The prefabricated slab can then slide downwards along the pressing side plate, maintaining alignment with the pressing side plate throughout the sliding process. This allows the prefabricated slab to be neatly moved above the supporting base plate for placement. Then, the moving block moves downwards... The moving block drives the extrusion side plate downwards, and the extrusion side plate, along with the pressure plate, performs an initial extrusion on the upper side of the precast composite slab. Further, the downward-moving extrusion contact block applies a vertical downward extrusion to the upper side of the pressure plate to increase the pressure on the precast composite slab. When the precast composite slab is impacted by the poured slurry, the extrusion of the precast composite slab by the connecting base can prevent the position of the precast composite slab from shifting during the pouring process. This effectively improves the positioning accuracy of the positioning plate, facilitates the positioning and installation of the composite slab, and achieves the advantage of good positioning effect.

[0020] (2) The positioning and installation structure and method for prefabricated building construction, through the shape matching of the adapter groove and the extension column, allows the moving block to only move up and down on the extension column, so as to avoid the position of the moving block being offset. Through the cooperation between the constraint cavity and the slider, when the extrusion end drives the second threaded column to rotate inside the second threaded hole, the height of the moving block can be constrained, so that the height of multiple moving blocks is maintained at a fixed position, thereby improving the stability of use.

[0021] (3) The positioning and installation structure and method for prefabricated building construction: the extruded side plate swings through the connecting column that is movably installed on the protrusion. The torsion spring set on the end face of the connecting column allows the extruded side plate to return to the initial position after swinging. The limiting groove limits the limiting block so that the moving block and the initial position of the extruded side plate are always on the same plane, thereby constraining the movement of the extruded side plate. Furthermore, when the extruded side plate is in the initial state, the pressure plate is in a horizontal position so that the bottom side of the pressure plate can fully contact the top side of the prefabricated composite slab, thereby improving stability.

[0022] (4) The positioning and installation structure and method for prefabricated building construction: the movable block is fixedly connected to the extension column, and the extension column is fixedly connected to the connecting base. The adapter block and the card block fixedly connected to the connecting base are engaged with the card slot opened on the side of the fixed block. When separating, it is only necessary to hook the hook of the suspending composite plate to the bottom of the movable block. The upward pulling force of the hook is used to separate the connecting base from the fixed block, thereby separating the main body of the positioning structure from the supporting base plate, so that the main body of the positioning structure can be used for a second time. Attached Figure Description

[0023] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0024] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0027] Figure 3 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0028] Figure 4 For the present invention Figure 2 Enlarged structural diagram at point B;

[0029] Figure 5 For the present invention Figure 2 Enlarged structural diagram at point C;

[0030] Figure 6 For the present invention Figure 2 Enlarged structural diagram at point D;

[0031] Figure 7 This is a schematic diagram of the composite plate and the extruded side plate of the present invention just coming into contact;

[0032] Figure 8 This is a schematic diagram of the composite plate of the present invention sliding on the side of the extrusion side plate;

[0033] Figure 9 This is a schematic diagram of the composite plate of the present invention falling from the side of the extruded side plate;

[0034] Figure 10 This is a schematic diagram of the composite plate of the present invention resting on the supporting base plate.

[0035] Legend:

[0036] 1. Support beam; 2. Support base plate; 3. Precast composite slab; 4. Connecting base; 5. Extension column; 6. Moving block; 7. Extrusion side plate; 8. First threaded hole; 9. First threaded column; 10. Support ring; 11. Rotating groove; 12. First rotating column; 13. Extension block; 14. Pressure plate; 15. Contact groove; 16. Extrusion contact block; 17. Protrusion; 18. Rotating hole; 19. Second rotating column; 20. Connecting column; 21. Connecting block; 22. Torsion spring; 23. Limiting groove; 24. Limiting block; 25. Sliding groove; 26. Sliding block; 27. Adaptor groove; 28. Second threaded hole; 29. ​​Second threaded column; 30. Extrusion end; 31. Fixing block; 32. Slot; 33. Adaptor block; 34. Slot; 35. Constraint cavity; 36. Constraint ring. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] A positioning and installation structure for prefabricated building construction, such as Figures 1-10As shown, the structure includes support beams 1, support base plates 2, and precast composite slabs 3. A support base plate 2 is positioned above two support beams 1, and two precast composite slabs 3 are symmetrically positioned above the support base plate 2. A connecting base 4 is snapped between the two precast composite slabs 3 above the support base plate 2. An extension column 5 is fixedly connected to the upper side of the connecting base 4. A movable block 6 is mounted on the extension column 5, which can only move vertically along the axial direction of the extension column 5. A pressing side plate 7 is movably mounted on the bottom side of the movable block 6. Pressure plates 14 are fixedly connected to the corresponding sides of the two pressing side plates 7 near their bottom ends. The movable block 6 and the pressing side plates 7 are connected by a limiting swing structure on their corresponding sides. The pressing side plates 7 can swing on the movable block 6 via the limiting swing structure. The movable block 6 is connected to the extension column 5. Two first threaded holes 8 are symmetrically opened at the position. Each of the two first threaded holes 8 is provided with a support structure. The support structure includes a first threaded post 9, a support ring 10, and a pressing contact block 16. The first threaded post 9 is threadedly connected to the inside of the first threaded hole 8. When the first threaded post 9 rotates inside the first threaded hole 8, it can move upward or downward. The support ring 10 is movably installed on the outside of the first threaded post 9 and can constrain the movement of the pressing side plate 7. When the pressing side plate 7 swings to the position of the support ring 10, it is limited by the support ring 10 and stops swinging. The pressing contact block 16 is movably installed at the bottom end of the first threaded post 9 and can press the pressure plate 14. When the first threaded post 9 moves downward, the first threaded post 9 can move downward with the pressing contact block 16 and press the top of the pressure plate 14.

[0039] like Figures 4-5As shown, the limiting swing structure includes two protrusions 17, which are symmetrically fixedly connected to one end of the moving block 6 corresponding to the extrusion side plate 7. Each of the two protrusions 17 has a rotating hole 18 on one side corresponding to each other. A second rotating column 19 is movably installed inside each of the two rotating holes 18, rotating within the rotating hole 18. A connecting column 20 is fixedly connected to one side of each of the two second rotating columns 19, allowing the second rotating column 19 to drive the connecting column 20 to rotate. A connecting block 21 is fixedly connected to the side of the connecting column 20 away from the moving block 6. The side of the connecting block 21 away from the connecting column 20 is fixedly connected to the side of the extrusion side plate 7. When the connecting column 20 rotates, it can drive the extrusion side plate 7 to rotate. The rotation of the connecting column 20 is constrained by the torsion spring 22 set between the connecting column 20 and the protrusion 17. The torsion spring 22 resists the rotation of the connecting block 21. One end of the torsion spring 22 is fixedly connected to the end face of the connecting column 20 and the other end is fixedly connected to the side of the protrusion 17. The second rotating column 19 is set inside the torsion spring 22. The extrusion side plate 7 is symmetrically provided with two limiting grooves 23 on one side of the moving block 6. The limiting grooves 23 are rectangular grooves and are located at the corners of the moving block 6. The side of the protrusion 17 is fixedly connected to the limiting grooves 23. When the limiting block 24 is inside the limiting grooves 23, it can constrain the swing amplitude of the extrusion side plate 7 to limit the swing of the extrusion side plate 7.

[0040] like Figure 4 As shown, a groove 25 is provided at the upper edge of the first threaded post 9, and the groove 25 extends to the center of the first threaded post 9. The support ring 10 is movably installed on the side of the slider 26 away from the first threaded post 9. The support ring 10 is a ring with a semi-circular cross section and a flat outer side. The support ring 10 slides on the groove 25 through the slider 26.

[0041] like Figure 3 and Figure 6 As shown, a rotating groove 11 is provided at the lower end of the first threaded column 9. A rotating first column 12 is movably installed inside the rotating groove 11. An extension block 13 is fixedly connected to the side of the first rotating column 12 corresponding to the lower part of the first threaded column 9. A pressing contact block 16 is fixedly connected to the side of the extension block 13 away from the first rotating column 12. The pressing contact block 16 is located above the pressure plate 14. The rotating groove 11 can rotate inside the first rotating column 12. A contact groove 15 is provided at the upper end of the pressure plate 14. The contact groove 15 is a groove with a triangular cross section. The pressing contact block 16 is a triangular block that matches the contact groove 15.

[0042] like Figure 4As shown, the upper end of the movable block 6 is provided with an adapter groove 27, which is a triangular through groove. The extension column 5 is also triangular in cross-section and extends upward into the interior of the adapter groove 27. The movable block 6 can move up and down on the extension column 5 through the adapter groove 27. A pressing end 30 that can link the up and down movement of the movable block 6 is movably installed on the upper end of the movable block 6. The upper end of the extension column 5 is provided with a second threaded hole 28, and a second threaded post 29 is threadedly connected inside the second threaded hole 28. The upper end of the second threaded post 29 is fixedly connected to the lower end of the pressing end 30. When the threaded column 29 rotates clockwise inside the second threaded hole 28, it moves upward; when the threaded column 29 rotates counterclockwise inside the second threaded hole 28, it moves downward. The threaded column 29 drives the extrusion end 30 to move, and the extrusion end 30 drives the moving block 6 to move. The upper end of the moving block 6 is provided with a constraint cavity 35. The lower end of the extrusion end 30 is fixedly connected to the constraint cavity 35. The constraint ring 36 is movably installed inside the constraint cavity 35. The constraint cavity 35 is an L-shaped annular cavity, and the constraint ring 36 is an L-shaped annular cylinder.

[0043] like Figure 6 As shown, the upper side of the support base plate 2 is fixedly connected to both sides of the connecting base 4 with fixing blocks 31. The two fixing blocks 31 are mirror images of each other on both sides of the connecting base 4. The two fixing blocks 31 are provided with slots 32 on the side that are close to each other. The side of the connecting base 4 is fixedly connected to the corresponding slots 32 with an adapter block 33. The end of the adapter block 33 away from the connecting base 4 is fixedly connected to a card block 34. The card block 34 extends into the inside of the slot 32. The adapter block 33 is made of long carbon chain nylon material. The adapter block 33 and the card block 34 are engaged in the inside of the slot 32 by deformation.

[0044] A method for using a positioning and installation structure for prefabricated building construction;

[0045] The first step is to use a crane to transport the precast composite slab 3 above the moving block 6 and slowly control the descent speed of the precast composite slab 3.

[0046] Step 2: Start rotating the extrusion end 30. The extrusion end 30 drives the second threaded column 29 to rotate counterclockwise inside the second threaded hole 28. Through the engagement between the threads of the extrusion end 30 and the second threaded column 29, the second threaded column 29 moves downward. The second threaded column 29 drives the extrusion end 30 to move downward. The extrusion end 30 drives the constraint ring 36 to rotate inside the constraint cavity 35. The extrusion end 30 and the moving block 6 have a linkage capability, so that the extrusion end 30 can drive the moving block 6 to move downward. Adjust the moving block 6 to a suitable position. Rotate the first threaded column 9 inside the first threaded hole 8. The first threaded column 9 drives the support ring 10 to move. The support ring 10 moves to a position four centimeters away from the side of the extrusion side plate 7. The prefabricated composite plate 3 continues to move downward and extrudes the side of the extrusion side plate 7 so that one side of the extrusion side plate 7 is close to the side of the support ring 10.

[0047] The third step is to continue moving the precast composite plate 3 downwards. The bottom edge of the precast composite plate 3 slides on the side of the extrusion side plate 7 until it slides down from the side of the extrusion side plate 7 to above the support base plate 2. At this time, the torsion spring 22 recovers its elasticity and drives the connecting column 20 to rotate. The connecting column 20 drives the extrusion side plate 7 and the second rotating column 19 to rotate. When the limiting groove 23 on the extrusion side plate 7 is in contact with the limiting block 24, the movement of the extrusion side plate 7 stops. At this time, the pressure plate 14 moves to above the precast composite plate 3.

[0048] Fourth step: After the pressure plate 14 moves downward, it contacts and squeezes the upper part of the precast composite slab 3. The movement of the pressure plate 14 is limited by the upper limit groove 23 and the limit block 24 of the squeeze side plate 7, so that the contact surface between the bottom side of the pressure plate 14 and the upper side of the precast composite slab 3 is at the same level.

[0049] Fifth step: Rotate the first threaded column 9 downwards. The first threaded column 9 drives the extrusion contact block 16 to move downwards. The extrusion contact block 16 moves above the pressure plate 14 to further extrude downwards on the pressure plate 14, thereby increasing the extrusion force of the pressure plate 14 on the precast composite plate 3.

[0050] Working principle:

[0051] Rotating the extrusion end 30 causes the second threaded post 29 to rotate counterclockwise inside the second threaded hole 28. The engagement between the threads of the extrusion end 30 and the second threaded post 29 causes the second threaded post 29 to move downwards. The second threaded post 29 then causes the extrusion end 30 to move downwards, and the extrusion end 30 causes the constraint ring 36 to rotate inside the constraint cavity 35. The extrusion end 30 and the moving block 6 are linked, allowing the extrusion end 30 to drive the moving block 6 downwards. Adjusting the moving block 6 to a suitable position, the first threaded post 9 is rotated inside the first threaded hole 8. The rotation of the first threaded post 9 causes a change in the height of the support ring 10, moving the support ring 10 to a position four centimeters away from the side of the extrusion side plate 7. The prefabricated composite plate 3 moves downwards and extrudes the side of the extrusion side plate 7, causing the extrusion side plate 7 to rotate under the constraint of the second rotating post 19 and the rotating hole 18 via the connecting block 21. The prefabricated composite plate 3 continues to move downwards, causing one side of the extrusion side plate 7 to align with the side of the support ring 10. The precast composite slab 3 continues to move downwards, with its bottom edge sliding against the side of the extrusion side plate 7 until it slides down to above the support base plate 2. At this point, the torsion spring 22 recovers its elasticity and drives the connecting column 20 to rotate. The connecting column 20 then drives the extrusion side plate 7 and the second rotating column 19 to rotate. When the limiting groove 23 on the extrusion side plate 7 engages with the limiting block 24, the movement of the extrusion side plate 7 stops. At this point, the pressure plate 14 moves above the precast composite slab 3 and solidifies. The fixed block 31 drives the moving block 6 to move downward, and the moving block 6 drives the pressure plate 14 to move downward. After the pressure plate 14 moves downward, it contacts and squeezes the upper part of the precast composite plate 3. The movement of the pressure plate 14 is limited by the upper limit groove 23 and the limit block 24 of the pressure side plate 7, so that the bottom side of the pressure plate 14 and the upper side of the precast composite plate 3 are at the same level. The first threaded column 9 is rotated, and the first threaded column 9 drives the extrusion contact block 16 to move downward. The extrusion contact block 16 moves to the top of the pressure plate 14 and squeezes the pressure plate 14 downward.

[0052] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

Claims

1. A positioning and installation structure for prefabricated building construction, comprising a support beam (1), a support base plate (2), and prefabricated composite slabs (3), wherein a support base plate (2) is provided above two support beams (1), and two prefabricated composite slabs (3) are symmetrically arranged above the support base plate (2), and a connecting base (4) is snapped between the two prefabricated composite slabs (3) above the support base plate (2), an extension column (5) is fixedly connected to the upper side of the connecting base (4), and a moving block (6) is provided on the extension column (5), the moving block (6) only moves vertically along the axial direction of the extension column (5), and a pressing side plate (7) is movably installed on the bottom side of the moving block (6), characterized in that: A pressure plate (14) is fixedly connected to one side of each of the two extrusion side plates (7) near the bottom. The moving block (6) and the extrusion side plate (7) are connected by a limiting swing structure set on the corresponding side; The movable block (6) has two first threaded holes (8) symmetrically opened at the position corresponding to the extension column (5). The two first threaded holes (8) are equipped with a support structure. The support structure includes a first threaded column (9), a support ring (10) and a pressing contact block (16). The first threaded column (9) is threadedly connected to the inside of the first threaded hole (8). The support ring (10) is movably installed on the outside of the first threaded column (9) and constrains the movement of the pressing side plate (7). The pressing contact block (16) is movably installed at the bottom end of the first threaded column (9) and presses the pressure plate (14). The limiting swing structure includes two protrusions (17), which are symmetrically fixedly connected to one end of the moving block (6) corresponding to the pressing side plate (7). The two protrusions (17) are provided with rotating holes (18) on their respective sides. The two rotating holes (18) are movably installed with second rotating columns (19). The two second rotating columns (19) are fixedly connected with connecting columns (20) on their respective sides. The side of the connecting column (20) away from the moving block (6) is fixedly connected with a connecting block (21). The side of the connecting block (21) away from the connecting column (20) is fixedly connected to the side of the pressing side plate (7). The movement of the connecting column (20) is constrained by a torsion spring (22) set between the connecting column (20) and the protrusions (17). The extrusion side plate (7) has two symmetrically opened limiting grooves (23) on one side of the moving block (6). The limiting grooves (23) are opened at the corner of the moving block (6). The side of the protrusion (17) is fixedly connected to the limiting block (24) at the position of the limiting groove (23). The upper end of the pressure plate (14) is provided with a contact groove (15), the contact groove (15) is a groove with a triangular cross section, and the extrusion contact block (16) is a triangular block that is adapted to the contact groove (15); The upper end of the moving block (6) is provided with an adapter groove (27), which is a through groove with a triangular cross section. The extension column (5) has a triangular cross section and extends upward to the interior of the adapter groove (27). The upper end of the moving block (6) is movably installed with an extrusion end head (30) that links the up and down movement of the moving block (6). The upper end of the extension column (5) is provided with a second threaded hole (28), and the interior of the second threaded hole (28) is threaded with a second threaded column (29). The upper end of the second threaded column (29) is fixedly connected to the lower end of the extrusion end head (30). The upper end of the moving block (6) is provided with a constraint cavity (35), and the lower end of the extrusion end head (30) is fixedly connected with a constraint ring (36) corresponding to the position of the constraint cavity (35). The constraint ring (36) is movably installed inside the constraint cavity (35). The constraint cavity (35) has an "L" shaped annular cavity, and the constraint ring (36) has an "L" shaped annular cylinder. The upper side of the support base plate (2) is fixedly connected to both sides of the connecting base (4) with fixing blocks (31). The two fixing blocks (31) are mirrored on both sides of the connecting base (4). The two fixing blocks (31) are provided with slots (32) on the side that is close to each other. The side of the connecting base (4) is fixedly connected to the slots (32) with an adapter block (33). The end of the adapter block (33) away from the connecting base (4) is fixedly connected to a card block (34). The card block (34) extends into the inside of the slots (32). The adapter block (33) is made of long carbon chain nylon material.

2. The positioning and installation structure for prefabricated building construction according to claim 1, characterized in that: One end of the torsion spring (22) is fixedly connected to the end face of the connecting post (20), and the other end is fixedly connected to the side of the protrusion (17). The second rotating post (19) is located inside the torsion spring (22).

3. The positioning and installation structure for prefabricated building construction according to claim 2, characterized in that: A groove (25) is provided at the upper edge of the first threaded post (9). The groove (25) extends to the center of the first threaded post (9). The support ring (10) is movably installed on the side of the slider (26) away from the first threaded post (9). The support ring (10) is a ring with a semi-circular cross-section and a flat outer side.

4. The positioning and installation structure for prefabricated building construction according to claim 3, characterized in that: The lower end of the first threaded column (9) is provided with a rotating groove (11). The rotating groove (11) is movably installed with a first rotating column (12) that can rotate. An extension block (13) is fixedly connected to the side of the first rotating column (12) corresponding to the lower part of the first threaded column (9). A pressing contact block (16) is fixedly connected to the side of the extension block (13) away from the first rotating column (12). The pressing contact block (16) is located above the pressure plate (14).

5. A method of using the positioning and installation structure for prefabricated building construction as described in claim 4, characterized in that: First step: First, use a crane to transport the precast composite slab (3) above the moving block (6) and slowly control the descent speed of the precast composite slab (3); The second step involves rotating the extrusion end (30). The extrusion end (30) drives the second threaded post (29) to rotate counterclockwise inside the second threaded hole (28). Through the engagement between the threads of the extrusion end (30) and the second threaded post (29), the second threaded post (29) moves downward. The second threaded post (29) drives the extrusion end (30) to move downward. The extrusion end (30) drives the constraint ring (36) to rotate inside the constraint cavity (35). There is a linkage between the extrusion end (30) and the moving block (6). Force, so that the extrusion end (30) can drive the moving block (6) to move downward, move the adjusting moving block (6) to a suitable position, rotate the first threaded column (9) inside the first threaded hole (8), the first threaded column (9) drives the support ring (10) to move, the support ring (10) moves to a position four centimeters away from the side of the extrusion side plate (7), the prefabricated composite plate (3) continues to move downward and extrudes the side of the extrusion side plate (7) so that one side of the extrusion side plate (7) is close to the side of the support ring (10); Third step: Continue to move the precast composite plate (3) downwards. The bottom edge of the precast composite plate (3) slides on the side of the extrusion side plate (7) until it slides down from the side of the extrusion side plate (7) to the top of the support base plate (2). At this time, the torsion spring (22) recovers its elasticity and the torsion spring (22) drives the connecting column (20) to rotate. The connecting column (20) drives the extrusion side plate (7) and the second rotating column (19) to rotate. When the limiting groove (23) on the extrusion side plate (7) is in contact with the limiting block (24), the movement of the extrusion side plate (7) stops. At this time, the pressure plate (14) moves to the top of the precast composite plate (3). Step 4: After the pressure plate (14) moves downward, it comes into contact with the upper part of the precast composite slab (3) and is squeezed. The movement of the pressure plate (14) is limited by the upper limit groove (23) and the limit block (24) of the squeeze side plate (7) so that the bottom side of the pressure plate (14) and the upper side of the precast composite slab (3) are at the same level. Step 5: Rotate the first threaded column (9) downwards. The first threaded column (9) drives the extrusion contact block (16) to move downwards. The extrusion contact block (16) moves above the pressure plate (14) to further extrude downwards on the pressure plate (14) and increase the extrusion force of the pressure plate (14) on the precast composite plate (3).

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