Connecting device of large-cavity prefabricated floor system and construction method of connecting device

Abstract

The invention discloses a connecting device of a large-cavity prefabricated floor system and a construction method of the connecting device, the connecting device comprises two floor system plates, and a connecting plate is arranged between the opposite sides of the two floor system plates. When multiple floor cover plates need to be connected, the floor cover plates are placed on one side of a connecting plate, a rotary knob is rotated, the rotary knob rotates to drive a one-way threaded rod to rotate, the one-way threaded rod rotates to drive a fourth fixing plate to move, the fourth fixing plate moves to be connected with a first fixing block in a clamped mode, and the one-way threaded rod rotates to drive a first bevel gear to rotate; the first bevel gear rotates to drive a second bevel gear to rotate, the second bevel gear rotates to drive a first rotating rod to rotate, the first rotating rod rotates to drive a third bevel gear to rotate, the third bevel gear rotates to drive a fourth bevel gear to rotate, the fourth bevel gear rotates to drive the second rotating rod to rotate, the second rotating rod rotates to drive a fifth bevel gear to rotate, and the fifth bevel gear rotates to drive a sixth bevel gear to rotate. Therefore, the floor cover plates are connected with the connecting plates, and the floor cover plates are more convenient to connect when a plurality of floor cover plates need to be connected.

Description

Technical Field

[0001] The invention relates to the technical field of connection devices, in particular to a connection device for a large-cavity prefabricated floor slab and a construction method thereof. Background Art

[0002] Large cavity prefabricated floor is a new type of construction technology that aims to improve the thermal insulation performance, load-bearing capacity and construction efficiency of buildings. This technology prefabricates cavities in the floor and uses these cavities to improve the thermal insulation performance of the floor while enhancing the load-bearing capacity and seismic resistance of the floor.

[0003] Currently, when prefabricated floor slabs are fixed and connected, most of them need to be fixed manually with bolts, which is prone to errors and complicated to install. If problems are found after fixing, the disassembly work is relatively complicated and may require additional tools and time, resulting in reduced construction efficiency.

[0004] The existing patent with publication number CN113323219B discloses a method and device for fixing a floor structure. The patent mainly sets the connection block as a dovetail block structure, and uses the characteristics of the dovetail block to maintain the connection between the connection block and the connection groove.

[0005] Although this invention solves some problems, there are too many unstable factors in this design and the clamping is not stable enough.

[0006] Therefore, the applicant, based on many years of rich experience in design, development and actual production in the relevant industry, has conducted research and improvements on the existing structures and deficiencies, and provided a connection device and construction method for a large-cavity prefabricated floor slab, in order to achieve a more practical purpose. Summary of the invention

[0007] 1. Technical issues to be solved

[0008] In view of the deficiencies in the prior art, the present invention provides a connection device for a large-cavity prefabricated floor and a construction method thereof, which solves the problem that most of the current prefabricated floor slabs need to be fixed manually with bolts, which is prone to errors and complicated to install. If problems are found after fixing, the disassembly work is relatively complicated and may require additional tools and time, resulting in reduced construction efficiency.

[0009] (II) Technical solution

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions: a connection device for a large-cavity prefabricated floor, comprising a floor plate, wherein the number of the floor plates is set to two, a connecting plate is arranged between opposite sides of the two floor plates, a hole groove one is arranged on the front side of the floor plate, two hole grooves five are arranged on one side of the floor plate, two hole grooves six are arranged on one side of the floor plate, a fixing component is arranged in the inner cavity of the floor plate, a connecting component is arranged in the inner cavity of the connecting plate, two fixing plates seven are fixedly installed on both sides of the connecting plate, and two fixing plates eight are fixedly installed on both sides of the connecting plate.

[0011] When it is necessary to connect multiple floor panels, place the floor panel on one side of the connecting panel and turn the knob. The rotation of the knob drives the one-way threaded rod to rotate, and the rotation of the one-way threaded rod drives the fixed plate four to move. The fixed plate four moves and is clamped with the fixed block one. The rotation of the one-way threaded rod will also drive the bevel gear one to rotate, and the rotation of the bevel gear one drives the bevel gear two to rotate. The rotation of the bevel gear two drives the rotating rod one to rotate. The rotation of the rotating rod one drives the bevel gear three to rotate. The rotation of the bevel gear three drives the bevel gear four to rotate. The rotation of the bevel gear four drives the rotating rod two to rotate. The rotating rod two rotates the bevel gear five to rotate. The rotation of the bevel gear five drives the bevel gear six to rotate. The rotation of the bevel gear six drives the two-way threaded rod to rotate. The rotation of the two-way threaded rod drives the two fixed plates five to move. The movable fixed plate five drives the fixed block two to move. The fixed block two moves to the inside of the hole groove three and is clamped with the hole groove three, thereby connecting the floor panel and the connecting panel. It is more convenient when multiple floor panels need to be connected.

[0012] Preferably, the fixing assembly includes a fixing block 1, which is arranged in the inner cavity of the floor slab, a fixing plate 1 is fixedly installed on the front and rear sides of the fixing block 1, a limiting groove is provided on one side of the fixing plate 1, a hole groove 2 is provided in the inner cavity of the fixing plate 1, a spring 1 is fixedly installed in the inner cavity of the fixing plate 1, a telescopic rod is fixedly installed on one side of the spring 1, a limiting block 1 is fixedly installed on one side of the telescopic rod, and two hole grooves 3 are provided on the top and bottom of the inner cavity of the floor slab.

[0013] Preferably, the connecting assembly includes a knob, which is arranged at the bottom of a connecting plate, and a hole groove eight is opened in the inner cavity of the connecting plate, and a one-way threaded rod is fixedly connected to the top of the knob, and a bevel gear one is fixedly installed on the surface of the one-way threaded rod, one side of the bevel gear one is meshed with a bevel gear two, and one side of the bevel gear two is fixedly installed with a rotating rod one, and a bevel gear three is fixedly installed on the surface of the rotating rod one, and bevel gear four is meshed with bevel gear four on both sides of the bevel gear three, and a rotating rod two is fixedly installed on one side of the bevel gear four, and a bevel gear five is fixedly installed on the surface of the rotating rod two, and a bevel gear six is ​​meshed with the bottom of the bevel gear five, and a two-way threaded rod is fixedly installed in the inner cavity of the bevel gear six, and a fixing plate two is fixedly installed on one side of the rotating rod two, and a fixing plate three is fixedly installed on the other side of the rotating rod two.

[0014] Preferably, a hole groove seven is opened on one side of the connecting plate, a fixing plate four is threaded on the surface of the one-way threaded rod, a fixing plate five is threadedly connected to the top and bottom of the surface of the two-way threaded rod, a fixing block two is fixedly installed on one side of the fixing plate five, limiting blocks two are fixedly installed on both sides of the fixing plate five, and two fixing plates six are fixedly installed on both sides of the inner cavity of the connecting plate.

[0015] Preferably, a spring 2 is fixedly installed at the bottom of the inner cavity of the fixing plate 7, a limiting plate is fixedly installed on the top of the spring 2, and the surface of the spring 2 moves in the inner cavity of the fixing plate 7.

[0016] Preferably, the top of the one-way threaded rod is movably connected to the top of the inner cavity of the connecting plate, one end of the rotating rod one is movably connected to one side of the inner cavity of the connecting plate, the top of the two-way threaded rod is movably connected to the top of the inner cavity of the connecting plate, the top of the fixed plate two is fixedly connected to the top of the inner cavity of the connecting plate, and the top of the fixed plate three is fixedly connected to the top of the inner cavity of the connecting plate.

[0017] A construction method of a connection device for a large-cavity prefabricated floor, comprising the connection device for a large-cavity prefabricated floor as described above, specifically operates as follows:

[0018] During the implementation process, the floor plate is connected to the connecting plate, and the movement of the connecting plate drives the fixed plate six to move. When the fixed plate six moves into the hole groove one on one side of the floor plate for connection, the fixed plate six squeezes the limit block one, so that the limit block one drives the telescopic rod to move, and the telescopic rod moves toward the inner cavity of the fixed plate one, and the telescopic rod applies inward pressure to the spring one. When the fixed plate six moves to one side of the inner cavity of the floor plate and cannot move, the spring one gives the telescopic rod an outward elastic force to make the telescopic rod move, and the movement of the telescopic rod drives the limit block one to move, and the limit block one moves to limit the fixed plate six, and the movement of the connecting plate drives the two fixed plates seven to move. When the fixed plate seven moves into the hole groove five on one side of the floor plate for connection, the top of the inner cavity of the floor plate applies a downward force to the spring two, so that the spring two moves downward, and the spring two squeezes the limit plate. When the fixed plate seven cannot move, the limit plate applies an upward elastic force to the spring two, and the spring two moves to limit the floor plate, thereby reinforcing the connection between the floor plate and the connecting plate;

[0019] When it is necessary to connect multiple floor panels, place the floor panel on one side of the connecting panel, turn the knob, turn the knob, the rotation of the knob drives the one-way threaded rod to rotate, the rotation of the one-way threaded rod drives the fixed plate four to move, the fixed plate four moves and is clamped with the fixed block one, the rotation of the one-way threaded rod will also drive the bevel gear one to rotate, the rotation of the bevel gear one drives the bevel gear two to rotate, the rotation of the bevel gear two drives the rotating rod one to rotate, the rotation of the rotating rod one drives the bevel gear three to rotate, the rotation of the bevel gear three drives the bevel gear four to rotate, the rotation of the bevel gear four drives the rotating rod two to rotate, the rotating rod two rotates the bevel gear five to rotate, the rotation of the bevel gear five drives the bevel gear six to rotate, the rotation of the bevel gear six drives the two-way threaded rod to rotate, the rotation of the two-way threaded rod drives the two fixed plates five to move, the mobile fixed plate five drives the fixed block two to move, the fixed block two moves to the inside of the hole groove three and is clamped with the hole groove three, so that the floor panel is connected to the connecting panel, which is more convenient when multiple floor panels need to be connected.

[0020] (III) Beneficial effects

[0021] The present invention provides a connection device for a large cavity prefabricated floor and a construction method thereof.

[0022] Beneficial effects:

[0023] When it is necessary to connect multiple floor panels, place the floor panel on one side of the connecting panel and turn the knob. The rotation of the knob drives the one-way threaded rod to rotate, and the rotation of the one-way threaded rod drives the fixed plate four to move. The fixed plate four moves and is clamped with the fixed block one. The rotation of the one-way threaded rod will also drive the bevel gear one to rotate, and the rotation of the bevel gear one drives the bevel gear two to rotate. The rotation of the bevel gear two drives the rotating rod one to rotate. The rotation of the rotating rod one drives the bevel gear three to rotate. The rotation of the bevel gear three drives the bevel gear four to rotate. The rotation of the bevel gear four drives the rotating rod two to rotate. The rotating rod two rotates the bevel gear five to rotate. The rotation of the bevel gear five drives the bevel gear six to rotate. The rotation of the bevel gear six drives the two-way threaded rod to rotate. The rotation of the two-way threaded rod drives the two fixed plates five to move. The movable fixed plate five drives the fixed block two to move. The fixed block two moves to the inside of the hole groove three and is clamped with the hole groove three, thereby connecting the floor panel and the connecting panel. It is more convenient when multiple floor panels need to be connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a connection device of a large cavity prefabricated floor slab and a construction method thereof of the present invention;

[0025] Figure 2 It is a bottom view schematic diagram of the structure of the connection device of the large cavity prefabricated floor and the construction method thereof of the present invention;

[0026] Figure 3 A schematic side cross-sectional view of a floor slab of a connection device for a large cavity prefabricated floor slab and a construction method thereof according to the present invention;

[0027] Figure 4 It is a side view schematic diagram of the fixing components of the connection device of the large cavity prefabricated floor and the construction method thereof of the present invention;

[0028] Figure 5 A schematic side view of a connection plate of a connection device and a construction method of a large cavity prefabricated floor according to the present invention;

[0029] Figure 6 It is a schematic diagram of the front view of the connection plate of the connection device and the construction method of the large cavity prefabricated floor of the present invention;

[0030] Figure 7 It is a schematic diagram of partial structural analysis of the connection device of the large cavity prefabricated floor slab and the construction method thereof of the present invention;

[0031] Figure 8 It is a schematic diagram of the front view of the adjustment assembly of the connection device of the large cavity prefabricated floor and the construction method thereof of the present invention;

[0032] Fig. 9 It is a side cross-sectional schematic diagram of the adjustment assembly of the connection device of the large cavity prefabricated floor and the construction method thereof of the present invention.

[0033] Indicated in the figure:

[0034] 1. Floor plate; 2. Connecting plate; 3. Hole slot 1; 301. Fixing block 1; 302. Fixing plate 1; 303. Hole slot 2; 304. Spring 1; 305. Telescopic rod; 306. Limiting block 1; 307. Limiting slot; 308. Hole slot 3; 4. Hole slot 5; 5. Hole slot 6; 6. Knob; 601. One-way threaded rod; 602. Bevel gear 1; 603. Bevel gear 2; 604. Rotating rod 1; 605. Bevel gear 3; 60 6. Bevel gear four; 607. Rotating rod two; 608. Bevel gear five; 609. Bevel gear six; 610. Bidirectional threaded rod; 611. Fixed plate two; 612. Fixed plate three; 613. Hole slot seven; 614. Fixed plate four; 615. Fixed plate five; 616. Fixed block two; 617. Limit block two; 618. Fixed plate six; 619. Hole slot eight; 7. Fixed plate seven; 8. Spring two; 9. Limit plate; 10. Fixed plate eight. DETAILED DESCRIPTION

[0035] 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.

[0036] Example 1

[0037] Please refer to Figure 1-9 A connection device and construction method of a large cavity prefabricated floor slab, comprising a floor slab 1, the number of the floor slabs 1 is set to two, a connecting plate 2 is arranged between the opposite sides of the two floor slabs 1, a hole groove 1 3 is opened on the front side of the floor slab 1, two hole grooves 5 4 are opened on one side of the floor slab 1, two hole grooves 6 5 are opened on one side of the floor slab 1, a fixing component is arranged in the inner cavity of the floor slab 1, a connecting component is arranged in the inner cavity of the connecting plate 2, two fixing plates 7 7 are fixedly installed on both sides of the connecting plate 2, two fixing plates 8 10 are fixedly installed on both sides of the connecting plate 2, and a fixing component is arranged in the inner cavity of the connecting plate 2. The component includes a fixing block 301, which is arranged in the inner cavity of the floor slab 1, and a fixing plate 302 is fixedly installed on the front and rear sides of the fixing block 301, a limiting groove 307 is provided on one side of the fixing plate 302, a hole groove 2 303 is provided in the inner cavity of the fixing plate 302, a spring 304 is fixedly installed in the inner cavity of the fixing plate 302, a telescopic rod 305 is fixedly installed on one side of the spring 304, a limiting block 306 is fixedly installed on one side of the telescopic rod 305, and two hole grooves 3 308 are provided on the top and bottom of the inner cavity of the floor slab 1.

[0038] During the implementation process, the floor slab 1 is connected to the connecting plate 2. The connecting plate 2 moves to drive the fixing plate 618 to move. When the fixing plate 618 moves into the hole 3 provided on one side of the floor slab 1 for connection, the fixing plate 618 squeezes the limit block 306, so that the limit block 306 drives the telescopic rod 305 to move. The telescopic rod 305 moves toward the inner cavity of the fixing plate 302. The telescopic rod 305 applies inward pressure to the spring 304. When the fixing plate 618 moves to the inner cavity of the floor slab 1 and cannot move, the spring 304 applies an outward elastic force to the telescopic rod 305, so that the telescopic rod 305 moves toward the inner cavity of the fixing plate 302. 05 moves, the telescopic rod 305 moves to drive the limit block 306 to move, the limit block 306 moves to limit the fixed plate 6 618, the connecting plate 2 moves to drive the two fixed plates 7 7 to move, when the fixed plate 7 7 moves into the hole groove 5 4 opened on one side of the floor cover plate 1 for connection, the top of the inner cavity of the floor cover plate 1 applies a downward force to the spring 2 8, so that the spring 28 moves downward, and the spring 28 squeezes the limit plate 9. When the fixed plate 7 7 cannot move, the limit plate 9 applies an upward elastic force to the spring 28, and the spring 28 moves to limit the floor cover plate 1, thereby reinforcing the connection between the floor cover plate 1 and the connecting plate 2.

[0039] Example 2

[0040] The connecting assembly includes a knob 6, which is arranged at the bottom of the connecting plate 2. The inner cavity of the connecting plate 2 is provided with a hole groove 8 619. The top of the knob 6 is fixedly connected to a one-way threaded rod 601. A bevel gear 1 602 is fixedly installed on the surface of the one-way threaded rod 601. A bevel gear 2 603 is meshed on one side of the bevel gear 1 602. A rotating rod 1 604 is fixedly installed on one side of the bevel gear 2 603. A bevel gear 3 605 is fixedly installed on the surface of the rotating rod 1 604. The bevel gear 3 605 Bevel gear 4 606 is meshed on both sides, a rotating rod 2 607 is fixedly installed on one side of the rotating rod 2 607, a bevel gear 5 608 is fixedly installed on the surface of the rotating rod 2 607, a bevel gear 609 is meshed on the bottom of the bevel gear 5 608, a bidirectional threaded rod 610 is fixedly installed in the inner cavity of the bevel gear 609, a fixing plate 2 611 is fixedly installed on one side of the rotating rod 2 607, a fixing plate 3 612 is fixedly installed on the other side of the rotating rod 2 607, and a connecting plate 2 A hole groove seven 613 is opened on the side, a fixed plate four 614 is threaded on the surface of the one-way threaded rod 601, and a fixed plate five 615 is threaded on the top and bottom of the surface of the two-way threaded rod 610. A fixed block two 616 is fixedly installed on one side of the fixed plate five 615, and a limiting block two 617 is fixedly installed on both sides of the fixed plate five 615. Two fixed plates six 618 are fixedly installed on both sides of the inner cavity of the connecting plate 2, a spring two 8 is fixedly installed on the bottom of the inner cavity of the fixing plate seven 7, and a limiting plate 9 is fixedly installed on the top of the spring two 8. The surface of the spring two 8 is movable in the inner cavity of the fixing plate seven 7, the top of the one-way threaded rod 601 is movably connected to the top of the inner cavity of the connecting plate 2, one end of the rotating rod one 604 is movably connected to one side of the inner cavity of the connecting plate 2, the top of the two-way threaded rod 610 is movably connected to the top of the inner cavity of the connecting plate 2, the top of the fixing plate two 611 is fixedly connected to the top of the inner cavity of the connecting plate 2, and the top of the fixing plate three 612 is fixedly connected to the top of the inner cavity of the connecting plate 2.

[0041] During the implementation process, when multiple floor panels 1 need to be connected, the floor panels 1 are placed on one side of the connecting plate 2, and the knob 6 is turned. The knob 6 is turned, and the rotation of the knob 6 drives the one-way threaded rod 601 to rotate. The rotation of the one-way threaded rod 601 drives the fixing plate four 614 to move. The fixing plate four 614 moves and engages with the fixing block one 301. The rotation of the one-way threaded rod 601 also drives the bevel gear one 602 to rotate. The rotation of the bevel gear one 602 drives the bevel gear two 603 to rotate. The rotation of the bevel gear two 603 drives the rotating rod one 604 to rotate. The rotating rod one 604 drives the bevel gear three 605 to rotate. The bevel gear three 605 rotates It drives bevel gear four 606 to rotate, the rotation of bevel gear four 606 drives rotating rod two 607 to rotate, rotating rod two 607 drives bevel gear five 608 to rotate, the rotation of bevel gear five 608 drives bevel gear six 609 to rotate, the rotation of bevel gear six 609 drives bidirectional threaded rod 610 to rotate, the rotation of bidirectional threaded rod 610 drives two fixed plates five 615 to move, the movable fixed plate five 615 drives fixed block two 616 to move, the fixed block two 616 moves to the inside of hole groove three 308 and engages with hole groove three 308, thereby connecting the floor plate 1 with the connecting plate 2, which is more convenient when multiple floor plates 1 need to be connected.

[0042] To sum up, when it is necessary to connect multiple floor panels, the invention places the floor panel on one side of the connecting panel and turns the knob. The rotation of the knob drives the one-way threaded rod to rotate, and the rotation of the one-way threaded rod drives the fixed plate four to move. The fixed plate four moves and is clamped with the fixed block one. The rotation of the one-way threaded rod will also drive the bevel gear one to rotate, and the rotation of the bevel gear one drives the bevel gear two to rotate. The rotation of the bevel gear two drives the rotating rod one to rotate. The rotation of the rotating rod one drives the bevel gear three to rotate. The rotation of the bevel gear three drives the bevel gear four to rotate. The rotation of the bevel gear four drives the rotating rod two to rotate. The rotating rod two rotates the bevel gear five to rotate. The rotation of the bevel gear five drives the bevel gear six to rotate. The rotation of the bevel gear six drives the two-way threaded rod to rotate. The rotation of the two-way threaded rod drives the two fixed plates five to move. The movable fixed plate five drives the fixed block two to move. The fixed block two moves to the inside of the hole groove three and is clamped with the hole groove three, thereby connecting the floor panel and the connecting panel. It is more convenient when multiple floor panels need to be connected.

[0043] 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.

[0044] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connection device for a large cavity prefabricated floor, comprising a floor plate (1), characterized in that: The number of the floor plates (1) is set to two, a connecting plate (2) is arranged between the opposite sides of the two floor plates (1), a hole groove one (3) is opened on the front side of the floor plate (1), two hole grooves five (4) are opened on one side of the floor plate (1), and two hole grooves six (5) are opened on one side of the floor plate (1), the inner cavity of the floor plate (1) is provided with a fixing component, the inner cavity of the connecting plate (2) is provided with a connecting component, two fixing plates seven (7) are fixedly installed on both sides of the connecting plate (2), and two fixing plates eight (10) are fixedly installed on both sides of the connecting plate (2).

2. A connection device for large cavity prefabricated floor according to claim 1, characterized in that: The fixing assembly comprises a fixing block 1 (301), the fixing block 1 (301) being arranged in the inner cavity of the floor slab (1), a fixing plate 1 (302) being fixedly installed on the front and rear sides of the fixing block 1 (301), a limiting groove (307) being provided on one side of the fixing plate 1 (302), a hole groove 2 (303) being provided in the inner cavity of the fixing plate 1 (302), a spring 1 (304) being fixedly installed in the inner cavity of the fixing plate 1 (302), a telescopic rod (305) being fixedly installed on one side of the spring 1 (304), a limiting block 1 (306) being fixedly installed on one side of the telescopic rod (305), and two hole grooves 3 (308) being provided on the top and bottom of the inner cavity of the floor slab (1).

3. The connection device of a large cavity prefabricated floor according to claim 1, characterized in that: The connection assembly comprises a knob (6), the knob (6) being arranged at the bottom of the connection plate (2), the inner cavity of the connection plate (2) being provided with a hole groove eight (619), the top of the knob (6) being fixedly connected with a one-way threaded rod (601), the surface of the one-way threaded rod (601) being fixedly mounted with a bevel gear one (602), one side of the bevel gear one (602) being meshed with a bevel gear two (603), one side of the bevel gear two (603) being fixedly mounted with a rotating rod one (604), the surface of the rotating rod one (604) being fixedly mounted with a bevel gear three (605), the Bevel gear four (606) is meshed with both sides of bevel gear three (605), rotating rod two (607) is fixedly installed on one side of bevel gear four (606), bevel gear five (608) is fixedly installed on the surface of rotating rod two (607), bevel gear six (609) is meshed with the bottom of bevel gear five (608), bidirectional threaded rod (610) is fixedly installed in the inner cavity of bevel gear six (609), fixed plate two (611) is fixedly installed on one side of rotating rod two (607), and fixed plate three (612) is fixedly installed on the other side of rotating rod two (607).

4. The connection device of a large cavity prefabricated floor according to claim 3, characterized in that: A hole groove seven (613) is provided on one side of the connecting plate (2); a fixing plate four (614) is threaded on the surface of the one-way threaded rod (601); a fixing plate five (615) is threadedly connected to the top and bottom of the surface of the two-way threaded rod (610); a fixing block two (616) is fixedly installed on one side of the fixing plate five (615); limit blocks two (617) are fixedly installed on both sides of the fixing plate five (615); and two fixing plates six (618) are fixedly installed on both sides of the inner cavity of the connecting plate (2).

5. The connection device of a large cavity prefabricated floor according to claim 1, characterized in that: A spring 2 (8) is fixedly mounted on the bottom of the inner cavity of the fixing plate 7 (7), a limiting plate (9) is fixedly mounted on the top of the spring 2 (8), and the surface of the spring 2 (8) moves in the inner cavity of the fixing plate 7 (7).

6. The connection device of a large cavity prefabricated floor according to claim 4, characterized in that: The top of the one-way threaded rod (601) is movably connected to the top of the inner cavity of the connecting plate (2), one end of the rotating rod one (604) is movably connected to one side of the inner cavity of the connecting plate (2), the top of the two-way threaded rod (610) is movably connected to the top of the inner cavity of the connecting plate (2), the top of the fixed plate two (611) is fixedly connected to the top of the inner cavity of the connecting plate (2), and the top of the fixed plate three (612) is fixedly connected to the top of the inner cavity of the connecting plate (2).

7. A construction method for a connection device of a large cavity prefabricated floor, characterized in that: The connection device of the large cavity prefabricated floor slab according to claim 1 is specifically operated as follows: During the implementation process, the floor plate (1) is connected to the connecting plate (2), and the connecting plate (2) moves to drive the fixing plate (618) to move. When the fixing plate (618) moves into the hole (3) provided on one side of the floor plate (1) for connection, the fixing plate (618) presses the limit block (306), so that the limit block (306) drives the telescopic rod (305) to move, and the telescopic rod (305) moves toward the inner cavity of the fixing plate (302). The telescopic rod (305) applies inward pressure to the spring (304). When the fixing plate (618) moves to one side of the inner cavity of the floor plate (1) and cannot move, the spring (304) applies an outward elastic force to the telescopic rod (305), so that the telescopic rod (305) moves to the inner cavity of the floor plate (1). ) is moved, the telescopic rod (305) moves to drive the limit block 1 (306) to move, the limit block 1 (306) moves to limit the fixed plate 6 (618), the connecting plate (2) moves to drive the two fixed plates 7 (7) to move, when the fixed plate 7 (7) moves into the hole groove 5 (4) opened on one side of the floor cover plate (1) for connection, the top of the inner cavity of the floor cover plate (1) exerts a downward force on the spring 2 (8), so that the spring 2 (8) moves downward, and the spring 2 (8) squeezes the limit plate (9), when the fixed plate 7 (7) cannot move, the limit plate (9) exerts an upward elastic force on the spring 2 (8), and the spring 2 (8) moves to limit the floor cover plate (1), thereby reinforcing the connection between the floor cover plate (1) and the connecting plate (2); When multiple floor panels (1) need to be connected, the floor panels (1) are placed on one side of the connecting plate (2), and the knob (6) is turned. The knob (6) is turned, and the rotation of the knob (6) drives the one-way threaded rod (601) to rotate. The rotation of the one-way threaded rod (601) drives the fixing plate four (614) to move. The fixing plate four (614) moves and engages with the fixing block one (301). The rotation of the one-way threaded rod (601) also drives the bevel gear one (602) to rotate. The rotation of the bevel gear one (602) drives the bevel gear two (603) to rotate. The rotation of the bevel gear two (603) drives the rotating rod one (604) to rotate. The rotation of the rotating rod one (604) drives the bevel gear three (605) to rotate. The rotation of the bevel gear three (605) drives the rotating rod one (604). The movable bevel gear four (606) rotates, and the rotation of the bevel gear four (606) drives the rotating rod two (607) to rotate, and the rotating rod two (607) drives the bevel gear five (608) to rotate, and the rotation of the bevel gear five (608) drives the bevel gear six (609) to rotate, and the rotation of the bevel gear six (609) drives the bidirectional threaded rod (610) to rotate, and the rotation of the bidirectional threaded rod (610) drives the two fixed plates five (615) to move, and the movable fixed plate five (615) drives the fixed block two (616) to move, and the fixed block two (616) moves to the inside of the hole groove three (308) and is engaged with the hole groove three (308), so that the floor cover plate (1) and the connecting plate (2) are connected, which is more convenient when multiple floor cover plates (1) need to be connected.

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