An assembled prefabricated panel end limit connection device

Abstract

The present invention relates to the field of building prefabricated equipment, specifically a prefabricated panel end limiting connection device, including a prefabricated panel, a protective sleeve, a positioning device, a limiting device, a fixed card seat, a positioning slot and a connecting guide plate, and at least nine groups of fixed cards are provided, and the upper and lower parts of the nine groups of fixed cards are fixedly connected by connecting guide plates. The present invention sets a limiting device, and when the prefabricated panel is connected in position, the prefabricated panel can be introduced into the interior of the threaded sleeve through multiple groups of steel bar clamping shafts to complete the initial positioning, and then through the centripetal displacement of the two groups of prefabricated panels, the nine groups of steel bar clamping shafts can be introduced into the interior of the conical sleeve through the pressing guide shaft, and at the same time, the six groups of limiting blocks inside the conical sleeve can automatically perform elastic self-locking while the pressing guide shaft is pushed in, completing the convenience and stability of the positioning connection of the protective sleeve, and improving the efficiency of assembling and connecting the prefabricated panels.

Description

Technical Field

[0001] The invention relates to the technical field of building prefabricated equipment, in particular to an assembled prefabricated panel end limiting connection device. Background Art

[0002] Precast panels are modules or panels used in engineering projects. Precast panels are prefabricated concrete parts produced and processed in prefabrication yards and then transported directly to the construction site for installation, hence the name precast panels.

[0003] For example, the utility model patent disclosed in patent number CN110453847B is an assembled prefabricated panel end positioning and connection device, which includes a prefabricated panel, a connecting member, an edge positioning plate, a center positioning plate and a panel end post-cast strip. The connecting member is used to connect the prestressed steel strands at the ends of adjacent prefabricated panels, the edge positioning plate and the center positioning plate are used to determine the installation position of the prefabricated panel, and the panel end post-cast strip is an area surrounded by the prefabricated panel, the edge positioning plate and the center positioning plate, and is used for pouring concrete.

[0004] Although the above-mentioned connecting device can perform alignment connection operations on prefabricated panels, it is necessary to lift the prefabricated panels back and forth for alignment, and it is also necessary to align various alignment connectors one by one, which greatly reduces the convenience of alignment connection of prefabricated panels. Therefore, an assembled prefabricated panel end limit connection device is needed to solve the above-mentioned problems. Summary of the Invention

[0005] The object of the present invention is to provide an assembled prefabricated panel end limiting connection device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: an assembled prefabricated panel end limiting connection device, comprising a prefabricated panel, a protective sleeve, a positioning device, a limiting device, a fixed card seat, a positioning card slot and a connecting guide plate;

[0007] There are at least nine groups of fixed brackets, and the upper and lower parts of the nine groups of fixed brackets are fixedly connected by connecting guide plates. A limiting device for positioning is fixedly installed at the center of the inner end surface of the fixed bracket, and the inner end surface of the limiting device is symmetrically connected with a positioning device with the fixed bracket as the center, and a protective sleeve is fixedly provided on the side end surface of the nine groups of positioning devices, a prefabricated plate is provided on the inner end surface of the protective sleeve, and positioning slots that are compatible with the positioning device are equidistantly provided on the side end surface of the protective sleeve.

[0008] Specifically, the alignment device includes a steel bar clamping shaft, a positioning guide shaft, a pressing groove, a positioning fillet and a pressing guide shaft. A positioning guide shaft is fixedly installed at the center of the upper end surface of the steel bar clamping shaft, and a pressing guide shaft is fixedly provided at the center of the upper end surface of the positioning guide shaft. A pressing groove is provided at the center of the upper end surface of the positioning guide shaft, and a positioning fillet for positioning is provided at the upper end surface of the pressing guide shaft.

[0009] Specifically, the limiting device includes a supporting device, a positioning device, a clamping device and a pressing device. There are two groups of supporting devices in total, and the two groups of supporting devices are fixedly connected. The inner end surfaces of the two groups of supporting devices are provided with pressing devices for limiting, and six groups of clamping devices are equidistantly slidingly clamped at the inner end surfaces of the supporting devices near the conical opening, and a positioning device is provided at the outer end surface of the supporting device near the conical opening.

[0010] Specifically, the supporting device includes a tapered sleeve, a positioning groove, a connecting clamp, a fixed guide hole and a threaded sleeve. The inner end surface of the tapered sleeve is equidistantly provided with six groups of positioning grooves for guiding. The bottom end surfaces of the six groups of positioning grooves pass through to the bottom of the tapered sleeve to provide a fixed guide hole. A connecting clamp is provided at the center of the upper end surface of the fixed guide hole, and a threaded sleeve is provided at the center of the lower end surface of the tapered sleeve.

[0011] Specifically, the positioning device includes a connecting groove, a limiting turntable, a guide shaft, a limiting clamping ring, a threaded guide groove, a fixed clamping groove and a hexagonal turn plate. A threaded guide groove for guiding is provided at the center of the inner end surface of the hexagonal turn plate, and a connecting groove is provided near the outside of the inner end surface of the hexagonal turn plate. A fixed clamping groove for limiting is provided at the bottom end surface of the connecting groove. A limiting clamping ring for limiting is rotatably connected to the inner end surface of the fixed clamping groove, and a limiting turntable is fixedly installed at the center of the outer end surface of the limiting clamping ring. Six groups of guide clamping shafts are equidistantly arranged on the outer end surface of the limiting turntable.

[0012] Specifically, the clamping device includes a positioning chamfer, a limit block, a spring guide shaft, a guide slider and a limit clamp seat. Four groups of spring guide shafts are equidistantly arranged on the front end surface of the guide slider. The limit clamp seats are fixedly installed on the front end surfaces of the four groups of spring guide shafts, and a limit block is fixedly provided on the outer end surface of the limit clamp seat. A positioning chamfer is provided at the bottom of the front end surface of the limit block.

[0013] Specifically, the top pressure device includes a spiral spring, a fixed guide ring and a connecting pressure ring. A spiral spring for buffering is provided at the center of the lower end surface of the fixed guide ring, and a connecting pressure ring is fixedly installed at the center of the lower end surface of the spiral spring.

[0014] Specifically, the cross-sections of the guide slider and the positioning slot are both T-shaped, and the guide slider is slidably engaged with the inside of the tapered sleeve through the positioning slot. The front end faces of the six groups of limit blocks are arc-shaped, and the front end faces of the six groups of limit blocks are elastically fitted with the side walls of the positioning guide shaft. The arc radius of the sides of the six groups of limit blocks is equal to the radius of the positioning guide shaft, and the radius of the pressing guide shaft is larger than the radius of the positioning guide shaft, so an inverted T-shaped limit structure is formed, which can complete self-locking after the pressing guide shaft is introduced into the six groups of limit blocks.

[0015] Specifically, the lower end face of the connecting pressure ring is elastically pressed against the upper end faces of the six groups of limit blocks, the guide shaft is pressed against the bottom of the limit block through the fixed guide hole, and the hexagonal rotating plate is threadedly connected to the threaded sleeve through the threaded guide groove. The bottom of the connecting pressure ring can press the upper parts of the six groups of limit blocks, which can effectively improve the stability of the six groups of limit blocks in limiting the pressed guide shafts and improve the stability of the positioning assembly of the protective sleeve.

[0016] Specifically, a positioning support plate for support is fixedly provided at the center of the upper end surface of the fixed guide ring, and a spring pressure shaft is fixedly installed at the center of the lower end surface of the positioning support plate, and a positioning card shaft adapted to the press-fit slot is fixedly provided at the center of the lower end surface of the spring pressure shaft, so as to facilitate the subsequent improvement of the stability of positioning and limiting.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention sets a limiting device. When the prefabricated panels are connected in position, the prefabricated panels can be introduced into the interior of the threaded sleeve through multiple groups of steel bar clamping shafts to complete preliminary positioning. Subsequently, through the centripetal displacement of the two groups of prefabricated panels, the nine groups of steel bar clamping shafts can be introduced into the interior of the conical sleeve through the pressing guide shaft. At the same time, the six groups of limiting blocks inside the conical sleeve can automatically perform elastic self-locking when the pressing guide shaft is pushed in, thereby completing the convenience and stability of the positioning connection of the protective sleeve plates and improving the efficiency of assembling and connecting the prefabricated panels.

[0019] 2. The present invention provides a positioning device. When the prefabricated panel is quickly disassembled, the hexagonal rotating plate can be connected to the threaded sleeve through the thread, thereby synchronously driving the six groups of guide shafts to move toward the inside of the tapered sleeve. While the six groups of guide shafts are moving, they can lift the six groups of limit blocks, thereby releasing the limit on the pressed guide shafts by the six groups of limit blocks, effectively improving the convenience of the equipment in assembling and subsequently disassembling the prefabricated panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a main body split diagram of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the main body of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the alignment device of the present invention;

[0024] Figure 4 This is an exploded view of the limiting device of the present invention;

[0025] Figure 5 Schematic diagram of the structure of the limiting device of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the support device of the present invention;

[0027] Figure 7 This is an exploded view of the positioning device of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the positioning device of the present invention;

[0029] Figure 9 It is a structural schematic diagram of the clamping device of the present invention;

[0030] Figure 10 It is a structural schematic diagram of the top pressing device of the present invention;

[0031] Figure 11 It is a structural schematic diagram of the second embodiment of the pressing device of the present invention.

[0032] In the figure: 1-prefabricated plate, 2-protective sleeve plate, 3-alignment device, 4-limiting device, 5-fixed card seat, 6-positioning card slot, 7-connecting guide plate, 31-rebar clamping shaft, 32-positioning guide shaft, 33-pressing card slot, 34-positioning fillet, 35-pressing guide shaft, 41-support device, 42-positioning device, 43-clamping device, 44-top pressing device, 411-tapered card sleeve, 412-positioning slide groove, 413-connecting clamping ring, 414-fixed guide hole, 415-thread Sliding sleeve, 421-connecting groove, 422-limiting turntable, 423-guide plug shaft, 424-limiting clamping ring, 425-threaded guide groove, 426-fixed clamping groove, 427-hexagonal rotating plate, 431-positioning chamfer, 432-limiting clamping block, 433-spring guide shaft, 434-guide slider, 435-limiting clamping seat, 441-volute spring, 442-fixed guide ring, 443-connecting pressure ring, 444-positioning support plate, 445-spring pressure shaft, 446-alignment clamping shaft. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings 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 in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] The present invention will be further described below with reference to the accompanying drawings. Example 1

[0036] See also Figure 1-10 , an embodiment of the present invention provides: an assembled prefabricated plate end limit connection device, comprising a prefabricated plate 1, a protective sleeve plate 2, a positioning device 3, a limit device 4, a fixed card seat 5, a positioning card slot 6 and a connecting guide plate 7;

[0037] At least nine groups of fixed bases 5 are provided, and the upper and lower parts of the nine groups of fixed bases 5 are fixedly connected by connecting guide plates 7. A limiting device 4 for positioning is fixedly installed at the center of the inner end surface of the fixed base 5. The inner end surface of the limiting device 4 is symmetrically connected with the positioning device 3 with the fixed base 5 as the center, and a protective sleeve plate 2 is fixedly provided on the side end surface of the nine groups of positioning devices 3. A prefabricated plate 1 is provided on the inner end surface of the protective sleeve plate 2, and positioning slots 6 that are compatible with the positioning device 3 are equidistantly provided on the side end surface of the protective sleeve plate 2.

[0038] like Figure 3 The positioning device 3 includes a steel bar clamping shaft 31, a positioning guide shaft 32, a pressing groove 33, a positioning fillet 34 and a pressing guide shaft 35. The positioning guide shaft 32 is fixedly installed at the center of the upper end surface of the steel bar clamping shaft 31, and the pressing guide shaft 35 is fixedly provided at the center of the upper end surface of the positioning guide shaft 32. A pressing groove 33 is provided at the center of the upper end surface of the positioning guide shaft 32, and a positioning fillet 34 for positioning is provided on the upper end surface of the pressing guide shaft 35.

[0039] like Figure 4 and Figure 5 The limiting device 4 includes a supporting device 41, a positioning device 42, a clamping device 43 and a pressing device 44. There are two groups of supporting devices 41, and the two groups of supporting devices 41 are fixedly connected. The inner end surfaces of the two groups of supporting devices 41 are both provided with a pressing device 44 for limiting, and six groups of clamping devices 43 are equidistantly slidingly clamped at the inner end surface of the supporting device 41 near the conical opening, and a positioning device 42 is provided at the outer end surface of the supporting device 41 near the conical opening.

[0040] like Figure 6 The supporting device 41 includes a tapered sleeve 411, a positioning groove 412, a connecting clamping ring 413, a fixed guide hole 414 and a threaded sleeve 415. The inner end surface of the tapered sleeve 411 is equidistantly provided with six groups of positioning grooves 412 for guidance. The bottom end surfaces of the six groups of positioning grooves 412 pass through to the bottom of the tapered sleeve 411 to provide a fixed guide hole 414. A connecting clamping ring 413 is provided at the center of the upper end surface of the fixed guide hole 414, and a threaded sleeve 415 is provided at the center of the lower end surface of the tapered sleeve 411.

[0041] like Figure 7 and Figure 8The positioning device 42 includes a connecting groove 421, a limiting turntable 422, a guide plug shaft 423, a limiting snap ring 424, a threaded guide groove 425, a fixed snap groove 426 and a hexagonal rotating plate 427. A threaded guide groove 425 for guiding is provided at the center of the inner end surface of the hexagonal rotating plate 427, and a connecting groove 421 is provided at the inner end surface of the hexagonal rotating plate 427 near the outside, and a fixed snap groove 426 for limiting is provided at the bottom end surface of the connecting groove 421. The inner end surface of the fixed snap groove 426 is rotatably connected to the limiting snap ring 424 for limiting, and a limiting turntable 422 is fixedly installed at the center of the outer end surface of the limiting snap ring 424, and six groups of guide plug shafts 423 are equidistantly arranged on the outer end surface of the limiting turntable 422.

[0042] like Figure 9 The clamping device 43 includes a positioning chamfer 431, a limiting block 432, a spring guide shaft 433, a guide slider 434 and a limiting clamping seat 435. Four groups of spring guide shafts 433 are equidistantly arranged on the front end surface of the guide slider 434. The limiting clamping seat 435 is fixedly installed on the front end surface of the four groups of spring guide shafts 433, and the limiting clamping block 432 is fixedly provided on the outer end surface of the limiting clamping seat 435. A positioning chamfer 431 is provided at the bottom of the front end surface of the limiting clamping block 432.

[0043] like Figure 10 The top pressure device 44 includes a spiral spring 441, a fixed guide ring 442 and a connecting pressure ring 443. A spiral spring 441 for buffering is provided at the center of the lower end surface of the fixed guide ring 442, and a connecting pressure ring 443 is fixedly installed at the center of the lower end surface of the spiral spring 441.

[0044] The cross-sections of the guide slider 434 and the positioning slot 412 are both T-shaped, and the guide slider 434 is slidably connected to the inside of the tapered sleeve 411 through the positioning slot 412. The front end faces of the six groups of limit blocks 432 are arc-shaped, and the front end faces of the six groups of limit blocks 432 are elastically fitted to the side walls of the positioning guide shaft 32. The arc radius of the side of the six groups of limit blocks 432 is equal to the radius of the positioning guide shaft 32. At the same time, the radius of the pressing guide shaft 35 is larger than the radius of the positioning guide shaft 32, so an inverted T-shaped limiting structure is formed, which can complete self-locking after the pressing guide shaft 35 is introduced into the six groups of limit blocks 432.

[0045] The lower end face of the connecting pressure ring 443 is elastically pressed against the upper end faces of the six groups of limit blocks 432, the guide plug shaft 423 is pressed against the bottom of the limit block 432 through the fixed guide hole 414, the hexagonal rotating plate 427 is threadedly connected to the threaded sleeve 415 through the threaded guide groove 425, and the bottom of the connecting pressure ring 443 can press the upper part of the six groups of limit blocks 432, which can effectively improve the stability of the six groups of limit blocks 432 in limiting the pressing guide shaft 35, and improve the stability of the positioning assembly of the protective sleeve plate 2.

[0046] When implementing this embodiment, before use, the user can position the two sets of prefabricated panels 1 that need to be aligned and connected to the two sides of the connecting guide plate 7, and then insert the steel bar clamping shafts 31 on the sides of the two opposite protective sleeves 2 into the inside of the threaded sleeve 415 to complete the initial positioning, so that the protective sleeves 2 on both sides can complete the initial positioning with the limit device 4 through the steel bar clamping shafts 31. Then the staff can use external tools or directly squeeze the two sets of protective sleeves 2 toward the direction of the connecting guide plate 7. At this time, the protective sleeves 2 can drive the steel bar clamping shafts 31 toward the direction of the connecting guide plate 7. The cam 35 is pressed against the support 41 by the support 42, and the cam 35 is pressed against the support 42 by the support 42. The spring 441 can be pressed on the upper part of the six groups of limit blocks 432 through the connecting pressure ring 443, so that the six groups of limit blocks 432 can be elastically reset, thereby enabling the six groups of limit blocks 432 to complete the limit self-locking operation on the bottom of the introduced pressing guide shaft 35. When the protective sleeves 2 on both sides are introduced into the interior of the limit device 4 through the alignment device 3, the connection limit of the two groups of protective sleeves 2 is completed. Then, the external concrete can be poured into the gap between the two groups of protective sleeves 2 to complete the final closure. If it is necessary to temporarily remove the alignment devices 3 at different positions during alignment, the user can By rotating the hexagonal rotating plate 427 through a tool, the hexagonal rotating plate 427 can be threadedly displaced on the outside of the threaded sleeve 415, so that when the hexagonal rotating plate 427 is threadedly displaced, it can drive the limit turntable 422 and the guide plug shaft 423 to move toward the inside of the tapered sleeve 411 through the fixed guide hole 414, thereby enabling the guide plug shaft 423 to press the six groups of limit blocks 432, so that the six groups of limit blocks 432 can be synchronously lifted under the guidance of the guide slider 434 and the positioning slot 412, thereby releasing the limit of the limit block 432 on the pressing guide shaft 35. Example 2

[0047] On the basis of Example 1, Figure 11 As shown, a positioning support plate 444 for support is fixedly provided at the center of the upper end surface of the fixed guide ring 442, and a spring pressure shaft 445 is fixedly installed at the center of the lower end surface of the positioning support plate 444, and a positioning card shaft 446 adapted to the pressing slot 33 is fixedly provided at the center of the lower end surface of the spring pressure shaft 445.

[0048] When this embodiment is implemented, the spring compression shaft 445 can be aligned with the pressing groove 33 on the upper part of the pressing guide shaft 35 through the alignment clamping shaft 446, which facilitates double positioning when the pressing guide shaft 35 is subsequently assembled, and can also provide sufficient elastic force for the pressing guide shaft 35 to disengage.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An assembled prefabricated panel end limit connection device, characterized by: It comprises a prefabricated plate (1), a protective sleeve plate (2), a positioning device (3), a limiting device (4), a fixed card seat (5), a positioning card slot (6) and a connecting guide plate (7); At least nine groups of the fixed card seats (5) are provided, and the upper and lower parts of the nine groups of the fixed card seats (5) are fixedly connected by connecting guide plates (7). A limiting device (4) for positioning is fixedly installed at the center of the inner end surface of the fixed card seat (5), and the inner end surface of the limiting device (4) is symmetrically connected with the positioning device (3) with the fixed card seat (5) as the center, and a protective sleeve (2) is fixedly provided on the side end surface of the nine groups of the positioning device (3), and a prefabricated plate (1) is provided on the inner end surface of the protective sleeve (2). The side end surface of the protective sleeve (2) is equidistantly provided with positioning slots (6) adapted to the positioning device (3); The limiting device (4) comprises a supporting device (41), a positioning device (42) and a clamping device (43); The supporting device (41) includes a conical ferrule (411), a positioning groove (412), a connecting clamp (413), a fixed guide hole (414) and a threaded sleeve (415), the inner end surface of the conical ferrule (411) is provided with six groups of positioning grooves (412) for guidance at equal distances, the bottom end surfaces of the six groups of positioning grooves (412) are connected to the bottom of the conical ferrule (411) and a fixed guide hole (414) is provided, the center of the upper end surface of the fixed guide hole (414) is provided with a connecting clamp (413), and the center of the lower end surface of the conical ferrule (411) is provided with a threaded sleeve (415); The positioning device (42) comprises a limiting rotary disk (422) and a guide plug shaft (423), and the outer end surface of the limiting rotary disk (422) is provided with six groups of guide plug shafts (423) at equal intervals. The clamping device (43) includes a limiting clamping block (432) and a guide slider (434), and the guide slider (434) is slidably clamped inside the conical clamping sleeve (411) through the positioning slide groove (412); The guide plug shaft (423) is pressed against the bottom of the limiting block (432) through the fixed guide hole (414).

2. The assembly-type prefabricated panel end stop connection device according to claim 1, characterized in that: The alignment device (3) comprises a steel bar clamping shaft (31), a positioning guide shaft (32), a pressing slot (33), a positioning fillet (34) and a pressing guide shaft (35), wherein the positioning guide shaft (32) is fixedly mounted at the center of the upper end face of the steel bar clamping shaft (31), and the pressing guide shaft (35) is fixedly arranged at the center of the upper end face of the positioning guide shaft (32), a pressing slot (33) is provided at the center of the upper end face of the positioning guide shaft (32), and a positioning fillet (34) for positioning is provided at the upper end face of the pressing guide shaft (35).

3. The assembly type prefabricated panel end stop connection device according to claim 2, characterized in that: The limiting device (4) further includes a pressing device (44), and the supporting device (41) is provided with two groups in total. The two groups of supporting devices (41) are fixedly connected to each other, and the inner end surfaces of the two groups of supporting devices (41) are both provided with a pressing device (44) for limiting, and six groups of clamping devices (43) are equidistantly slidably clamped at the inner end surfaces of the supporting devices (41) near the conical opening, and a positioning device (42) is provided at the outer end surface of the supporting device (41) near the conical opening.

4. The assembly-type prefabricated panel end limiting connection device according to claim 3, characterized in that: The positioning device (42) further comprises a connecting groove (421), a limiting snap ring (424), a thread guide groove (425), a fixed snap ring (426) and a hexagonal rotating plate (427), wherein a thread guide groove (425) for guiding is provided at the center of the inner end surface of the hexagonal rotating plate (427), and a connecting groove (421) is provided at the inner end surface of the hexagonal rotating plate (427) near the outside, and a fixed snap ring (426) for limiting is provided at the bottom end surface of the connecting groove (421), a limiting snap ring (424) for limiting is rotatably engaged with the inner end surface of the fixed snap ring (426), and a limiting rotating disk (422) is fixedly installed at the center of the outer end surface of the limiting snap ring (424).

5. The assembly-type prefabricated panel end limiting connection device according to claim 4, characterized in that: The clamping device (43) further comprises a positioning chamfer (431), a spring guide shaft (433) and a limiting clamping seat (435), and the front end surface of the guide slider (434) is equidistantly provided with four groups of spring guide shafts (433). The limiting clamping seats (435) are fixedly installed on the front end surfaces of the four groups of spring guide shafts (433), and a limiting clamping block (432) is fixedly provided on the outer end surface of the limiting clamping seat (435). The bottom of the front end surface of the limiting clamping block (432) is provided with a positioning chamfer (431).

6. The assembly-type prefabricated panel end limiting connection device according to claim 5, characterized in that: The pressing device (44) comprises a volute spring (441), a fixed guide ring (442) and a connecting pressure ring (443); a volute spring (441) for buffering is provided at the center of the lower end surface of the fixed guide ring (442), and a connecting pressure ring (443) is fixedly installed at the center of the lower end surface of the volute spring (441).

7. The assembly-type prefabricated panel end limiting connection device according to claim 6, characterized in that: The cross sections of the guide slider (434) and the positioning slide groove (412) are both T-shaped, the front end surfaces of the six groups of limit blocks (432) are arc-shaped, and the front end surfaces of the six groups of limit blocks (432) are elastically fitted and connected to the side walls of the positioning guide shaft (32).

8. The assembly-type prefabricated panel end limiting connection device according to claim 6, characterized in that: The lower end surface of the connecting pressure ring (443) is elastically pressed against the upper end surfaces of the six groups of limit blocks (432), and the hexagonal rotating plate (427) is threadedly connected to the threaded sleeve (415) through the threaded guide groove (425).

9. The assembly-type prefabricated panel end limiting connection device according to claim 6, characterized in that: A positioning support plate (444) for support is fixedly provided at the center of the upper end surface of the fixed guide ring (442), and a spring pressure shaft (445) is fixedly installed at the center of the lower end surface of the positioning support plate (444). A positioning clamping shaft (446) adapted to the pressing slot (33) is fixedly provided at the center of the lower end surface of the spring pressure shaft (445).

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