Large-span component for fabricated building

Abstract

The invention relates to the technical field of building assembly, and discloses an assembly type building large-span component which comprises a prefabricated plate, positioning pins are connected to the four corners of the bottom face of the prefabricated plate correspondingly, and chamfers are arranged at the bottoms of the positioning pins; the number of the cross beams in the group is two, and a plurality of groups of pin holes are formed in the cross beams in the group; the fastening mechanism is used for fastening the side faces of the adjacent prefabricated slabs; and the prestress mechanism is used for generating prestress. Through the arrangement of the fastening mechanisms, two adjacent prefabricated slabs are self-locked and fastened through the cooperation of a plurality of self-locking pins and a plurality of self-locking rings, and the stability between the adjacent prefabricated slabs is improved, so that the overall stability of the floor slab is improved; and through the arrangement of the positioning pins, the positioning pins and the pin holes are matched to play a guiding and positioning role, and the shifting phenomenon is avoided when the prefabricated slab is installed.

Description

Technical Field

[0001] The invention relates to the technical field of building assembly, in particular to a large-span component for assembled buildings. Background Art

[0002] Prefabricated buildings refer to buildings that transfer a large amount of on-site work in traditional construction methods to factories, where building components and accessories are processed and manufactured in factories, transported to construction sites, and assembled and installed on site through reliable connection methods. In prefabricated buildings, large-span components are usually required, including prefabricated floor slabs. Existing prefabricated floor slabs are usually prefabricated into strips in advance. After being transported to the assembly site, the prefabricated floor slabs are docked and installed on beams. Multiple prefabricated floor slabs are spliced ​​in sequence to form an integral floor slab.

[0003] However, during the actual assembly of the prefabricated floor slabs in the prior art, since the fastening mechanisms of the prefabricated floor slabs are usually arranged at the positions where the two ends are in contact with the beams, when the prefabricated floor slabs are hoisted into place, their sides are usually tightly fitted with the adjacent prefabricated floor slabs. Due to the lack of a working surface, it is difficult to set the fastening mechanisms between the adjacent prefabricated floor slabs, and it is not convenient for manual operation. If the fastening mechanisms are arranged on the outer walls of the prefabricated floor slabs, it will affect the surface flatness of the structure. Therefore, although the prefabricated floor slabs are fixed to the beams, the stability between the adjacent prefabricated floor slabs is poor, and there is still room for improvement in the stability of the overall structure. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the present invention provides a large-span component for prefabricated buildings, which solves the problems in the prior art that it is difficult to set a fastening mechanism between adjacent prefabricated floor slabs and it is inconvenient for manual operation.

[0006] Technical Solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a large-span component for prefabricated buildings, a large-span component for prefabricated buildings, comprising: a prefabricated panel, wherein the four corners of the bottom surface of the prefabricated panel are respectively connected with positioning pins, and the bottom of the positioning pins is provided with a chamfer; a group of cross beams, wherein a group of the cross beams is set to two, and a group of the cross beams is provided with multiple groups of pin holes, and a group of the pin holes is set to four, and the four positioning pins at the bottom of the prefabricated panel correspond to the positions of a group of the pin holes; a fastening mechanism, which is used to fasten the side surfaces of adjacent prefabricated panels; a prestressing mechanism, which is used to generate prestress; the fastening mechanism comprises a slider, which is slidably installed on the front inner wall of the prefabricated panel, the slider is provided with an inclined surface, the inclined surface of the slider is located on the outside of the prefabricated panel, and two sliding rods are slidably installed on the front inner wall of the prefabricated panel.

[0008] Preferably, the two sliding rods are respectively located on the left and right sides of the slider, and the two sliding rods are mirror-imaged. The two sliding rods are respectively hinged to a No. 1 connecting rod on the rear side of the slider, and a plurality of No. 2 connecting rods are hinged on the sliding rod. The end of the No. 2 connecting rod away from the sliding rod is hinged with a self-locking pin, and the plurality of self-locking pins are all slidably connected to the front outer wall of the prefabricated panel, and a plurality of mounting seats are connected to the rear inner wall of the prefabricated panel, and a self-locking ring is installed in the mounting seat.

[0009] Preferably, the multiple self-locking rings correspond to the positions of multiple self-locking pins respectively, the self-locking pins are provided with multiple locking bevel rings, the self-locking rings are provided with multiple open locking bevel rings, the self-locking rings are provided with openings, and multiple springs are provided between the self-locking rings and the mounting seat.

[0010] Preferably, the inner wall of the prefabricated plate is slidably connected to two cross bars, the inner wall of the locating pin is slidably connected to a square cone, and the bottom inner wall of the locating pin is slidably connected to two locking blocks.

[0011] Preferably, the top of the square cone is provided with an inclined surface, the bottom of the square cone is provided with two inclined surfaces in a mirror image, the sliding connection between the locking block and the positioning pin is inclined, and the two locking blocks are mirror imaged.

[0012] Preferably, the two cross bars are connected to two sliding bars respectively, and the cross bars are in sliding contact with the inclined surfaces at the top of two square cones during movement, and the two inclined surfaces at the bottom of the square cone are in sliding contact with the two locking blocks respectively.

[0013] Preferably, the prestressed mechanism includes a plurality of steel strands, and the plurality of steel strands are connected between two cross bars. Two fixed blocks are installed on the inner wall of the prefabricated panel, and the two fixed blocks are mirror-imaged. A plurality of anchor rings are connected to one end of the fixed block close to the cross bar, and the plurality of steel strands pass through the plurality of anchor rings respectively. Two trapezoidal blocks are slidably connected to the inner wall of the prefabricated panel, and a plurality of groups of clips are slidably connected to the trapezoidal blocks.

[0014] Preferably, both ends of the trapezoidal block are arranged as inclined surfaces, and the two ends of the trapezoidal block are respectively slidably connected with triangular blocks, and the two triangular blocks are respectively slidably connected with inclined surface blocks on the side away from the trapezoidal block, and the four inclined surface blocks are respectively connected with two cross bars, and the four triangular blocks are all slidably connected with the inner wall of the prefabricated panel.

[0015] Preferably, the plurality of groups of clips respectively wrap a plurality of steel strands, the clips are configured to be conical, and the plurality of groups of clips respectively contact the inner walls of a plurality of anchor rings when moving.

[0016] Beneficial Effects

[0017] Compared with the prior art, the present invention provides a large-span component for assembled buildings, which has the following beneficial effects:

[0018] 1. The large-span component for prefabricated buildings, through the setting of the fastening mechanism, realizes self-locking fastening between two adjacent prefabricated panels through the cooperation of multiple self-locking pins and multiple self-locking rings, thereby improving the stability between adjacent prefabricated panels, thereby improving the overall stability of the floor slab; through the setting of the positioning pin, the positioning pin and the pin hole play a guiding and positioning role through cooperation, avoiding displacement when installing the prefabricated panel; through the setting of the locking block, the locking block can lock the pin hole after the positioning pin is fully inserted into the pin hole, further improving the stability between the prefabricated panel and the beam.

[0019] 2. The large-span components for prefabricated buildings are equipped with prestressed mechanisms so that when the prefabricated panels are installed, multiple steel strands can be tensioned and locked to form prestress, so as to improve the bearing capacity of the prefabricated panels. When the prefabricated panels are prestressed during installation, the transportation time of the prefabricated panels can be included in their hardening and molding cycle, thereby shortening the production cycle and speeding up the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the appearance of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure proposed by the present invention;

[0022] Figure 3 This is a schematic diagram of the fastening mechanism structure proposed by the present invention;

[0023] Figure 4 A schematic diagram of the sliding rod structure proposed by the present invention;

[0024] Figure 5 This is a schematic diagram of the self-locking plate structure proposed by the present invention;

[0025] Figure 6 This is a schematic diagram of the crossbar structure proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the square cone structure proposed by the present invention;

[0027] Figure 8 This is a schematic diagram of the prestressed mechanism structure proposed by the present invention;

[0028] Fig. 9 This is a schematic diagram of the trapezoidal block structure proposed by the present invention;

[0029] Fig.10 This is a schematic diagram of the clip structure proposed by the present invention.

[0030] In the figure: 1. prefabricated plate; 2. positioning pin; 3. fastening mechanism; 31. slider; 32. connecting rod No. 1; 33. sliding rod; 34. connecting rod No. 2; 35. self-locking pin; 36. mounting seat; 37. self-locking ring; 38. cross bar; 39. square cone; 310. locking block; 4. prestressed mechanism; 41. steel strand; 42. fixing block; 43. anchor ring; 44. trapezoidal block; 45. clip; 46. triangular block; 47. inclined block; 5. cross beam; 51. pin hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 10 , a large-span component for assembled buildings, comprising: a prefabricated panel 1, with positioning pins 2 connected to the four corners of the bottom surface of the prefabricated panel 1, and the bottom of the positioning pins 2 is chamfered; a group of cross beams 5, a group of cross beams 5 is set to two, a group of cross beams 5 is provided with multiple groups of pin holes 51, a group of pin holes 51 is set to four, the four positioning pins 2 at the bottom of the prefabricated panel 1 correspond to the positions of the group of pin holes 51, after aligning the four positioning pins 2 at the bottom of the prefabricated panel 1 with the four pin holes 51, the prefabricated panel 1 is placed downward, and the four positioning pins 2 enter the four pin holes 51, which play a guiding and positioning role, so as to avoid the prefabricated panel 1 from being offset when the prefabricated panel 1 is placed, and the position needs to be adjusted multiple times, thereby affecting the construction progress;

[0033] In this embodiment, the fastening mechanism 3 is used to fasten the side surfaces of adjacent prefabricated panels 1; the fastening mechanism 3 includes a slider 31, which is slidably mounted on the front inner wall of the prefabricated panel 1, and a slope is provided on the slider 31, and the slope of the slider 31 is located outside the prefabricated panel 1. Two slide bars 33 are slidably mounted on the front inner wall of the prefabricated panel 1, and the two slide bars 33 are respectively located on the left and right sides of the slider 31, and the two slide bars 33 are mirror-imaged, and the two slide bars 33 are respectively hinged to the rear side of the slider 31 with a No. 1 connecting rod 32. Assuming that the first prefabricated panel 1 has been installed, when the second prefabricated panel 1 is installed, before it contacts the crossbeam 5, the rear bottom edge of the second prefabricated panel 1 contacts the slider 31 on the first prefabricated panel 1 at the rear, and because the prefabricated panel 1 is guided and positioned The sliding block 31 drives the two sliding bars 33 to move away from each other through the two No. 1 connecting rods 32. The sliding bars 33 are hinged with a plurality of No. 2 connecting rods 34. The end of the No. 2 connecting rod 34 away from the sliding bar 33 is hinged with a self-locking pin 35. The plurality of self-locking pins 35 are all slidably connected with the front outer wall of the precast panel 1. The self-locking pin 35 is limited and can only move forward and backward, so that the two sliding bars 33 respectively drive the plurality of self-locking pins 35 to move in the direction close to the second precast panel 1 through the plurality of No. 2 connecting rods 34. The rear inner wall of the precast panel 1 is connected with a plurality of mounting seats 36, and a self-locking ring 37 is installed in the mounting seat 36.

[0034] Furthermore, the plurality of self-locking rings 37 correspond to the positions of the plurality of self-locking pins 35 respectively, and the plurality of self-locking pins 35 on the first precast plate 1 respectively enter the plurality of self-locking rings 37 on the second precast plate 1, and the self-locking pins 35 are provided with a plurality of locking bevel rings, and the self-locking rings 37 are provided with a plurality of open locking bevel rings, and the self-locking rings 37 are provided with an opening, and a plurality of springs are provided between the self-locking rings 37 and the mounting seat 36. When the self-locking pins 35 are inserted into the self-locking rings 37, since the self-locking rings 37 have a certain elasticity, the self-locking rings 37 are deformed to both sides with the opening as the center, and when the locking bevel rings and the open locking bevel rings are buckled, the self-locking rings 37 are installed The elastic force of the multiple springs of the seat 36 is reset, so that the self-locking ring 37 locks the self-locking pin 35. When the second prefabricated panel 1 is installed in place, the multiple self-locking pins 35 of the first prefabricated panel 1 are fully inserted into the multiple self-locking rings 37 of the second prefabricated panel 1 and are completely locked, so that a fastening effect is achieved between the front side of the first prefabricated panel 1 and the rear side of the second prefabricated panel 1, thereby improving the stability between the two adjacent prefabricated panels 1. Through the setting of the fastening mechanism 3, the two adjacent prefabricated panels 1 are self-lockingly fastened through the cooperation of the multiple self-locking pins 35 and the multiple self-locking rings 37, thereby improving the stability between the adjacent prefabricated panels 1, thereby improving the overall stability of the floor panel.

[0035] In addition, the inner wall of the prefabricated panel 1 is slidably connected to two cross bars 38, the inner wall of the locating pin 2 is slidably connected to a square cone 39, the bottom inner wall of the locating pin 2 is slidably connected to two locking blocks 310, the top of the square cone 39 is provided with an inclined surface, and the bottom of the square cone 39 is mirror-imaged with two inclined surfaces. The sliding connection between the locking block 310 and the locating pin 2 is inclined, and the locking block 310 moves diagonally upward, and the two locking blocks 310 are mirror-imaged.

[0036] In addition, the two cross bars 38 are connected to the two sliding bars 33 respectively. When the two sliding bars 33 move, the two cross bars 38 are driven to move away from each other. During the movement, the cross bar 38 slides in contact with the inclined surfaces at the top of two square cones 39, and the two inclined surfaces at the bottom of the square cone 39 slide in contact with the two locking blocks 310 respectively. After the cross bar 38 contacts the inclined surfaces at the top of the square cone 39, the cross bar 38 pushes the square cone 39 downward along the inclined surfaces of the square cone 39. When the square cone 39 moves downward, the two locking blocks 310 are pushed away from each other through the two inclined surfaces at the bottom, so that the two locking blocks 310 protrude from the edge of the locating pin 2 and then abut against the bottom edge of the pin hole 51, thereby achieving the effect of locking the pin hole 51, thereby improving the stability between the prefabricated panel 1 and the cross beam 5; through the setting of the locking block 310, the locking block 310 can lock the pin hole 51 after the locating pin 2 is fully inserted into the pin hole 51, thereby further improving the stability between the prefabricated panel 1 and the cross beam 5.

[0037] It is worth noting that the prestressed mechanism 4 is used to generate prestress. The prestressed mechanism 4 includes a plurality of steel strands 41. The plurality of steel strands 41 are connected between two cross bars 38. When the two cross bars 38 move, the plurality of steel strands 41 are pulled to both sides, so that the steel strands 41 are elastically extended. Two fixed blocks 42 are installed on the inner wall of the precast panel 1. The two fixed blocks 42 are mirror-imaged. One end of the fixed block 42 close to the cross bar 38 is connected with a plurality of anchor rings 43. The plurality of steel strands 41 pass through the plurality of anchor rings 43 respectively. The inner wall of the precast panel 1 is slidably connected with two trapezoidal blocks 44. The trapezoidal blocks 44 are slidably connected with a plurality of groups of clips 45.

[0038] It is worth noting that both ends of the trapezoidal block 44 are set as inclined surfaces, and the two ends of the trapezoidal block 44 are respectively slidably connected with triangular blocks 46, and the two triangular blocks 46 are respectively slidably connected with inclined plane blocks 47 on the side away from the trapezoidal block 44. The four inclined plane blocks 47 are respectively connected to the two cross bars 38, and the four triangular blocks 46 are all slidably connected to the inner wall of the prefabricated panel 1. Taking the two inclined plane blocks 47 on the right as an example, the triangular blocks 46 are limited and can only move forward and backward. When the two inclined plane blocks 47 move to the right, they respectively drive the two triangular blocks 46 to move towards each other through the inclined planes. When the two triangular blocks 46 approach each other, they respectively drive the trapezoidal block 44 to move to the left through the inclined planes, and the trapezoidal block 44 drives multiple groups of clips 45 to move to the left.

[0039] It is worth mentioning that multiple groups of clips 45 respectively wrap multiple steel strands 41, and the clips 45 are set to be conical. When moving, the multiple groups of clips 45 respectively contact the inner walls of multiple anchor rings 43. Since the clips 45 are set to be conical, one group of clips 45 is gradually tightened in the process of sliding into the anchor ring 43. When the steel strand 41 is tensioned, the two groups of clips 45 at both ends of the steel strand 41 lock the two ends of the steel strand 41. At this time, the steel strand 41 forms a rebound stress. Through the setting of the prestressed mechanism 4, when the precast panel 1 is installed, the multiple steel strands 41 can be tensioned and locked to form prestress, so as to improve the bearing capacity of the precast panel 1. When the precast panel 1 is prestressed during installation, the transportation time of the precast panel 1 can be included in its hardening and molding cycle, thereby shortening the production cycle and accelerating the construction progress.

[0040] Working principle: during installation, after aligning the four positioning pins 2 at the bottom of the prefabricated panel 1 with the four pin holes 51, place the prefabricated panel 1 downward, and the four positioning pins 2 enter the four pin holes 51 to play a guiding and positioning role, so as to avoid the prefabricated panel 1 from being offset when placing the prefabricated panel 1, and the position needs to be adjusted multiple times, thereby affecting the construction progress; the prefabricated panel 1 is laid from back to front, assuming that the first prefabricated panel 1 has been installed, when the second prefabricated panel 1 is installed, before it contacts the cross beam 5, the rear bottom edge of the second prefabricated panel 1 contacts the slider 31 on the rear first prefabricated panel 1, and the prefabricated panel 1 moves vertically downward due to the guiding and positioning effect, so that the bottom of the second prefabricated panel 1 moves the slider 31 toward the first prefabricated panel 1 through the inclined surface of the slider 31 The self-locking pin 35 is limited to move forward and backward, so that the two slide bars 33 respectively drive the multiple self-locking pins 35 to move towards the second prefabricated plate 1 through multiple No. 2 connecting rods 34, so that the multiple self-locking pins 35 on the first prefabricated plate 1 respectively enter the multiple self-locking rings 37 on the second prefabricated plate 1, and the multiple locking bevel rings of the self-locking pin 35 and the multiple open locking bevel rings of the self-locking ring 37 form a self-locking structure. The self-locking pin 35 cannot be pulled out after being inserted into the self-locking ring 37. When the self-locking pin 35 is inserted into the self-locking ring 37, the self-locking ring 37 has a certain elasticity. The self-locking ring 37 is deformed toward both sides with the opening as the center. When the locking bevel ring and the open locking bevel ring are buckled, the self-locking ring 37 is reset by the elastic force of multiple springs of the mounting seat 36, so that the self-locking ring 37 locks the self-locking pin 35. When the second prefabricated panel 1 is installed in place, the multiple self-locking pins 35 of the first prefabricated panel 1 are fully inserted into the multiple self-locking rings 37 of the second prefabricated panel 1 and are completely locked, so that a fastening effect is achieved between the front side of the first prefabricated panel 1 and the rear side of the second prefabricated panel 1, thereby improving the stability between the two adjacent prefabricated panels 1; while the two sliding rods 33 move, they respectively drive the two cross rods 38 to move away from each other, and the two cross rods 38 respectively contact the four The top of each square cone 39, after the cross bar 38 contacts the inclined surface of the top of the square cone 39, the cross bar 38 pushes the square cone 39 downward along the inclined surface of the square cone 39. When the square cone 39 moves downward, the two inclined surfaces at the bottom respectively push the two locking blocks 310 away from each other. Since the locking blocks 310 are subject to oblique limitation, the locking blocks 310 move obliquely upward when moving. When the two locking blocks 310 follow the positioning pin 2 to move downward to the bottom edge of the pin hole 51, the two locking blocks 310 begin to move obliquely upward, so that the two locking blocks 310 protrude from the edge of the positioning pin 2 and abut against the bottom edge of the pin hole 51, thereby achieving the effect of locking the pin hole 51, thereby improving the stability between the prefabricated plate 1 and the crossbeam 5;Through the setting of the fastening mechanism 3, the two adjacent prefabricated panels 1 are self-locked and fastened through the cooperation of multiple self-locking pins 35 and multiple self-locking rings 37, which improves the stability between the adjacent prefabricated panels 1, thereby improving the overall stability of the floor panel; through the setting of the positioning pin 2, the positioning pin 2 and the pin hole 51 play a guiding and positioning role through cooperation, avoiding displacement when installing the prefabricated panel 1; through the setting of the locking block 310, the locking block 310 can lock the pin hole 51 after the positioning pin 2 is fully inserted into the pin hole 51, further improving the stability between the prefabricated panel 1 and the crossbeam 5. ;

[0041] When the two cross bars 38 move, they pull the multiple steel strands 41 to both sides, so that the steel strands 41 extend elastically. When the cross bars 38 move, they drive the two inclined plane blocks 47 to move synchronously. Taking the two inclined plane blocks 47 on the right as an example, the triangular block 46 is limited and can only move forward and backward. When the two inclined plane blocks 47 move to the right, they respectively drive the two triangular blocks 46 to move toward each other through the inclined planes. When the two triangular blocks 46 approach each other, they respectively drive the trapezoidal block 44 to move to the left through the inclined planes. The trapezoidal block 44 drives multiple groups of clips 45 to move to the left. When the clips 45 move to the left, they slide into and abut against the inner wall of the anchor ring 43. Since the clips 45 are conical, a group of clips 45 can slide into the anchor ring 4 3 is gradually tightened. When the steel strand 41 is tensioned, the two groups of clips 45 at both ends of the steel strand 41 lock the two ends of the steel strand 41. At this time, the steel strand 41 forms a rebound stress. The multiple anchor rings 43 transfer the stress to the precast panel 1 through the two fixing blocks 42, so that the precast panel 1 generates prestress, thereby improving the bearing capacity of the large-span precast panel 1. Through the setting of the prestressing mechanism 4, when the precast panel 1 is installed, the multiple steel strands 41 can be tensioned and locked to form prestress, so as to improve the bearing capacity of the precast panel 1. When the precast panel 1 is prestressed during installation, the transportation time of the precast panel 1 can be counted into its hardening and molding cycle, thereby shortening the production cycle and accelerating the construction progress.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A large-span component for assembled buildings, characterized in that: include: Precast panels; The four corners of the bottom surface of the prefabricated plate are respectively connected with positioning pins, and the bottom of the positioning pins is provided with chamfers; a set of beams; A fastening mechanism, used to fasten the sides of adjacent precast panels; A prestressing mechanism, used for generating prestressing force; A group of the cross beams is set to two, a group of the cross beams is provided with multiple groups of pin holes, a group of the pin holes is set to four, and the four positioning pins at the bottom of the prefabricated board correspond to the positions of the group of pin holes.

2. The large-span component for assembled buildings according to claim 1, characterized in that: The fastening mechanism comprises a slider which is slidably mounted on the front inner wall of the prefabricated board. The slider is provided with an inclined surface which is located outside the prefabricated board. Two sliding rods are slidably mounted on the front inner wall of the prefabricated board.

3. The large-span component for assembled buildings according to claim 2, characterized in that: The two sliding rods are respectively located on the left and right sides of the slider, and the two sliding rods are mirror-imaged. The two sliding rods are respectively hinged to a No. 1 connecting rod on the rear side of the slider, and a plurality of No. 2 connecting rods are hinged on the sliding rods. A self-locking pin is hinged at one end of the No. 2 connecting rod away from the sliding rod, and the plurality of self-locking pins are all slidably connected to the front outer wall of the prefabricated panel, and a plurality of mounting seats are connected to the rear inner wall of the prefabricated panel, and a self-locking ring is installed in the mounting seat.

4. The large-span component for assembled buildings according to claim 3, characterized in that: The multiple self-locking rings correspond to the positions of the multiple self-locking pins respectively, the self-locking pins are provided with multiple locking bevel rings, the self-locking rings are provided with multiple open locking bevel rings, the self-locking rings are provided with openings, and multiple springs are provided between the self-locking rings and the mounting seat.

5. The large-span component for assembled buildings according to claim 4, characterized in that: The inner wall of the prefabricated plate is slidably connected to two cross bars, the inner wall of the positioning pin is slidably connected to a square cone, and the bottom inner wall of the positioning pin is slidably connected to two locking blocks.

6. The large-span component for assembled buildings according to claim 5, characterized in that: The top of the square cone is provided with an inclined surface, and the bottom of the square cone is provided with two inclined surfaces in a mirror image. The sliding connection between the locking block and the positioning pin is inclined, and the two locking blocks are mirror imaged.

7. The large-span component for assembled buildings according to claim 6, characterized in that: The two cross bars are connected to two sliding bars respectively. The cross bars are in sliding contact with the inclined surfaces at the top of two square cones during movement. The two inclined surfaces at the bottom of the square cone are in sliding contact with the two locking blocks respectively.

8. The large-span component for assembled buildings according to claim 7, characterized in that: The prestressed mechanism includes a plurality of steel strands, and the plurality of steel strands are connected between two cross bars. Two fixed blocks are installed on the inner wall of the prefabricated panel, and the two fixed blocks are mirror-imaged. A plurality of anchor rings are connected to one end of the fixed block close to the cross bar, and the plurality of steel strands pass through the plurality of anchor rings respectively. Two trapezoidal blocks are slidably connected to the inner wall of the prefabricated panel, and a plurality of groups of clips are slidably connected to the trapezoidal blocks.

9. The large-span component for assembled buildings according to claim 8, characterized in that: Both ends of the trapezoidal block are set as inclined surfaces, and the two ends of the trapezoidal block are respectively slidably connected with triangular blocks, and the sides of the two triangular blocks away from the trapezoidal blocks are respectively slidably connected with inclined surface blocks, the four inclined surface blocks are respectively connected to two cross bars, and the four triangular blocks are all slidably connected to the inner wall of the prefabricated panel.

10. The large-span component for assembled buildings according to claim 9, characterized in that: The plurality of groups of clips respectively wrap a plurality of steel strands, the clips are configured to be conical, and the plurality of groups of clips respectively contact the inner walls of a plurality of anchor rings when moving.

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