Connecting piece for truss reinforced concrete laminated slab

Abstract

The utility model discloses a connecting piece for a truss reinforced concrete laminated slab. The connecting piece comprises an outer box, a first through hole is formed in the center of a top plate of the outer box; a second through hole is formed in the center of a bottom plate; the moving block comprises a horizontal part and a vertical part, the horizontal part is arranged above the top plate of the outer box, and the vertical part is vertically and movably inserted into the first through hole; the two first connecting plates are symmetrically arranged on the two sides of the lower end of the vertical part. The middle of the first rotary extrusion mechanism is rotationally connected with the inner wall of the end plate of the outer box, one end of the first rotary extrusion mechanism is rotationally connected with the extending end of the first connecting plate, and the other end of the first rotary extrusion mechanism penetrates through the side plate of the outer box and then abuts against the side wall of the prefabricated plate body; the threaded rod is vertically and movably inserted into the second through hole; the fixing nut is matched and sleeved on the outer side of the lower end extension part of the threaded rod; according to the utility model, the effect of limiting the prefabricated slab body in the horizontal direction is achieved, the situation that the horizontal position of the laminated slab deviates in the pouring process is effectively avoided, and the positioning precision of the laminated slab is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of assembled building structures, and particularly relates to a connecting piece for a truss reinforced concrete composite plate. Background Art

[0002] The truss reinforced concrete composite slab is an assembled slab formed by stacking prefabricated slabs and cast-in-place reinforced concrete layers, which has good integrity and continuity; the truss reinforced concrete composite slab is widely used in the floor construction process and can effectively enhance the earthquake resistance of the building; at the same time, it has the advantages of high construction efficiency, effective labor saving and saving consumption of building materials.

[0003] At present, in the construction of truss reinforced concrete composite slabs, multiple precast panels are usually spliced ​​together, and a gap is reserved between two adjacent precast panels, and then concrete is poured on the spliced ​​precast panels; wherein, due to the fluidity of concrete, it can flow into the gap between any two adjacent precast panels to achieve the effect of filling the gap, thereby improving the integrity of the composite slab; however, during the concrete pouring construction, due to the impact of concrete, the position of the precast panels is easily offset, and the precast panels need to be manually pushed for secondary position adjustment, which causes damage to the templates at the joints of adjacent precast panels and the sealing structure between the precast panels and the joint templates, seriously affecting the overall performance of the composite slab. Utility Model Content

[0004] In view of the technical problems existing in the prior art, the utility model provides a connecting piece for a truss reinforced concrete composite slab to solve the technical problem that the position of the prefabricated slab is easily shifted due to the impact of concrete, thereby seriously affecting the overall performance of the composite slab.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides a connector for a truss reinforced concrete composite plate, comprising an outer box, a moving block, two first connecting plates, two first rotating extrusion mechanisms, a threaded rod and a fixing nut; the outer box is arranged between the reserved gaps of two adjacent prefabricated plate bodies; wherein the outer box is a hollow rectangular parallelepiped structure, a first through hole is arranged at the center of the top plate of the outer box, and a second through hole is arranged at the center of the bottom plate of the outer box;

[0007] The moving block comprises a horizontal portion and a vertical portion, wherein the horizontal portion is arranged above the top plate of the outer box, and the vertical portion is vertically movable and inserted into the first through hole; wherein the upper end of the vertical portion is connected to the center of the lower surface of the horizontal portion, and the lower end of the vertical portion extends to the inside of the outer box; two first connecting plates are symmetrically arranged on both sides of the lower end of the vertical portion; wherein one end of the first connecting plate is connected to the lower end side wall of the vertical portion, and the other end of the first connecting plate extends horizontally toward the side plate direction of the outer box;

[0008] Two first rotary extrusion mechanisms are symmetrically arranged in the outer box and are respectively arranged on both sides of the vertical portion; wherein the middle portion of the first rotary extrusion mechanism is rotatably connected to the inner wall of the end plate of the outer box, one end of the first rotary extrusion mechanism is rotatably connected to the extended end of the first connecting plate, and the other end of the first rotary extrusion mechanism penetrates the side plate of the outer box and abuts against the side wall of the prefabricated panel body;

[0009] The threaded rod is vertically movably inserted into the second through hole, the upper end of the threaded rod is connected to the lower end of the vertical portion, and the lower end of the threaded rod extends to the bottom of the bottom plate of the outer box; the fixing nut is arranged under the bottom plate of the outer box and is fitted and sleeved on the outside of the lower end extension of the threaded rod.

[0010] Furthermore, the first rotary extrusion mechanism includes a rotating plate and a first rotating shaft;

[0011] The rotating plate includes a first plate segment and a second plate segment, wherein the first plate segment and the second plate segment are arranged in an L shape; wherein the first end of the first plate segment is rotatably connected to the extended end of the first connecting plate, the second end of the first plate segment is vertically connected to the first end of the second plate segment, and the second end of the second plate segment is a free end; wherein the free end of the second plate segment can be tightly pressed against the side wall of the prefabricated plate body;

[0012] The first rotating shaft is rotatably arranged at the connection between the first plate segment and the second plate segment; wherein, one end of the first rotating shaft is connected to the inner wall of the front end plate of the outer box, and the other end of the first rotating shaft is connected to the inner wall of the rear end plate of the outer box; wherein, a vertical opening is provided on the side plate of the outer box, and the vertical opening is used for the free end of the second plate segment to pass through.

[0013] Furthermore, the first rotary extrusion mechanism also includes a first gasket, which is arranged at the free end of the second plate segment; wherein one side of the first gasket is fixedly connected to the free end of the second plate segment, and the other side of the first gasket is used to be in close contact with the side wall of the prefabricated plate body.

[0014] Furthermore, the first gasket is a rubber gasket.

[0015] Furthermore, first connecting shafts are respectively provided on both sides of the extended end of the first connecting plate, a first U-shaped slot is opened at the first end of the first plate segment, and a first straight slot is provided on the side wall of the first U-shaped slot; wherein, the long axis direction of the first straight slot is consistent with the extension direction of the first plate segment, one end of the first connecting shaft is fixedly connected to the side wall of the extended end of the first connecting plate, and the other end of the first connecting shaft is slidably set in the first straight slot.

[0016] Furthermore, it also includes a spring; the spring is arranged inside the outer box and sleeved on the outside of the threaded rod; wherein the upper end of the spring is connected to the lower end of the vertical part, and the lower end of the spring is connected to the inner wall of the bottom plate of the outer box.

[0017] Furthermore, it also includes two second rotary extrusion mechanisms; the two second rotary extrusion mechanisms are symmetrically arranged at the two ends of the horizontal part, and the middle part of the second rotary extrusion mechanism is rotatably connected to the horizontal part; wherein, one end of the second rotary extrusion mechanism can be tightly set against the top plate of the outer box, and the other end of the second rotary extrusion mechanism can be abutted against the top surface of the prefabricated panel body.

[0018] Furthermore, the second rotary extrusion mechanism includes a second connecting plate and a third connecting plate;

[0019] The horizontal portion is provided with a vertical through groove, and the vertical through groove is provided on one side close to the end of the horizontal portion, and the third connecting plate is vertically slidably inserted into the vertical through groove; the lower end of the third connecting plate can be tightly arranged against the top plate of the outer box, the upper end of the third connecting plate is rotatably connected to the first end of the second connecting plate, the middle part of the second connecting plate is rotatably connected to the upper edge of the end of the horizontal portion, and the second end of the second connecting plate is a free end; wherein, the free end of the second connecting plate can be abutted against the top surface of the prefabricated plate body.

[0020] Furthermore, second connecting shafts are respectively provided on both sides of the upper end of the third connecting plate, a second U-shaped groove is opened at the first end of the second connecting plate, and a second straight groove is provided on the side wall of the second U-shaped groove; wherein, the long axis direction of the second straight groove is consistent with the extension direction of the second connecting plate, one end of the second connecting shaft is fixedly connected to the upper end side wall of the third connecting plate, and the other end of the second connecting shaft is slidably set in the second straight groove.

[0021] Furthermore, the second rotary extrusion mechanism also includes a second gasket, which is arranged at the free end of the second connecting plate; wherein one side of the second gasket is fixedly connected to the free end of the second connecting plate, and the other side of the second gasket is used to be in close contact with the top surface of the prefabricated plate body; wherein the second gasket is a rubber gasket.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] The utility model provides a connecting piece for a truss reinforced concrete composite plate, which is provided with a first rotating extrusion mechanism by rotating inside an outer box, and the first rotating extrusion mechanism is connected to the vertical part of a moving block by a first connecting plate, and when the moving block is driven to move downward, the first rotating extrusion mechanism is driven to rotate, and then a horizontal extrusion force is applied to the side wall of a prefabricated plate body, so as to achieve a limiting effect on the horizontal direction of the prefabricated plate body, effectively avoid the horizontal position deviation of the composite plate during the casting process, and effectively improve the positioning accuracy of the composite plate; secondly, the threaded rod is connected to the vertical part, and the threaded rod is fixed and locked to the bottom plate of the outer box by a fixing nut, so as to meet the limiting requirement of the first rotating extrusion mechanism and improve the reliability of the device.

[0024] Furthermore, by arranging a first gasket at the free end of the second plate segment, the friction between the first rotary extrusion mechanism and the side wall of the prefabricated plate body is effectively increased, thereby improving the anti-slip ability of the rotating plate and reducing the possibility of horizontal displacement of the prefabricated plate body.

[0025] Furthermore, by providing a first U-shaped notch on the first plate segment and connecting the first connecting plate to the first straight notch on the side wall of the first U-shaped notch using a first connecting shaft, the first rotary extrusion mechanism is prevented from getting stuck during rotation.

[0026] Furthermore, by arranging a spring between the vertical portion and the bottom plate of the outer box, the elastic effect of the spring is utilized to drive the moving block to maintain an upward movement trend, so as to prevent the moving block and the threaded rod from freely moving downward under the action of gravity, thereby cooperating with the fixing nut to effectively fix the threaded rod.

[0027] Furthermore, by arranging a second rotary extrusion mechanism at both ends of the horizontal part, when the movable block is driven to move downward, the second rotary extrusion mechanism is driven to rotate, thereby applying a downward extrusion force to the top surface of the precast board body, thereby achieving a limiting effect on the vertical direction of the precast board body, effectively avoiding the vertical position of the composite board during the casting process from being offset, and effectively improving the positioning accuracy of the composite board.

[0028] Furthermore, by providing a second U-shaped notch on the second connecting plate and connecting the first connecting plate to the second straight notch on the side wall of the second U-shaped notch using a second connecting shaft, the second rotary extrusion mechanism can be prevented from getting stuck during rotation.

[0029] Furthermore, by arranging a second gasket at the free end of the third connecting plate, the friction between the second rotary extrusion mechanism and the top surface of the prefabricated board body is effectively improved, thereby improving the anti-slip ability of the second connecting plate and reducing the possibility of vertical displacement of the prefabricated board body. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the assembly structure of the connecting piece and the prefabricated plate body of the utility model;

[0031] Figure 2 It is a cross-sectional view of the connecting piece of the utility model;

[0032] Figure 3 It is a cross-sectional view of the utility model after the transfer plate and the second connecting plate are rotated;

[0033] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0034] Figure 5 It is an exploded view of the connecting piece described in the utility model.

[0035] Among them, 1 is a prefabricated board body, 2 is an outer box, 3 is a moving block, 4 is a first connecting plate, 5 is a spring, 6 is a rotating plate, 7 is a first gasket, 8 is a first rotating shaft, 9 is a second connecting plate, 10 is a first straight slot, 11 is a third connecting plate, 12 is a second rotating shaft, 13 is a second straight slot, 14 is a second gasket, and 15 is a threaded rod. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the following specific embodiments further describe the utility model in detail. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0037] The utility model provides a connector for a truss reinforced concrete composite slab, which is used for connecting a prefabricated slab body during the construction process of the truss reinforced concrete composite slab; Figure 1-5 As shown, the connecting piece for the truss reinforced concrete composite plate includes an outer box 2, a moving block 3, two first connecting plates 4, a spring 5, two first rotating extrusion mechanisms, two second rotating extrusion mechanisms, a threaded rod 15 and a fixing nut.

[0038] The outer box 2 is arranged between the reserved gaps of two adjacent prefabricated panel bodies 1, and the outer box 2 is a hollow rectangular structure; wherein the hollow rectangular structure is formed by a top plate, a bottom plate, a front end plate, a rear end plate, a left side plate and a right side plate; a first through hole is arranged at the center of the top plate, and the first through hole is used for the vertical part of the moving block 3 to pass vertically; a second through hole is arranged at the center of the bottom plate, and the second through hole is used for the threaded rod 15 to pass vertically through the through hole; vertical openings are provided on the left side plate and the right side plate, and the vertical openings are used for the rotating plate 6 in the first rotary extrusion mechanism to pass through.

[0039] The movable block 3 includes a horizontal portion and a vertical portion, the horizontal portion is arranged above the top plate of the outer box 2; wherein the horizontal portion is arranged parallel to the top plate of the outer box 2; the vertical portion is vertically movably inserted into the first through hole; wherein the upper end of the vertical portion is vertically connected to the center of the lower surface of the horizontal portion, and the lower end of the vertical portion extends to the interior of the outer box 2; two of the first connecting plates 4 are symmetrically arranged on both sides of the lower end of the vertical portion; wherein one end of the first connecting plate 4 is connected to the lower end side wall of the vertical portion, and the other end of the first connecting plate 4 extends horizontally toward the side plate direction of the outer box 2.

[0040] The two first rotary extrusion mechanisms are symmetrically arranged in the outer box 2 and are respectively arranged on both sides of the vertical part; wherein, the middle part of the first rotary extrusion mechanism is rotationally connected to the inner wall of the end plate of the outer box 2, one end of the first rotary extrusion mechanism is rotationally connected to the extended end of the first connecting plate 4, and the other end of the first rotary extrusion mechanism penetrates the side plate of the outer box 2 and abuts against the side wall of the prefabricated panel body 1.

[0041] The two second rotary extrusion mechanisms are symmetrically arranged at the two ends of the horizontal part, and the middle part of the second rotary extrusion mechanism is rotationally connected to the horizontal part; wherein, one end of the second rotary extrusion mechanism can be tightly set against the top plate of the outer box 2, and the other end of the second rotary extrusion mechanism can be abutted against the top surface of the prefabricated panel body 1.

[0042] The threaded rod 15 is vertically movably inserted into the second through hole, the upper end of the threaded rod 15 is connected to the lower end of the vertical part, and the lower end of the threaded rod 15 extends to the bottom of the bottom plate of the outer box 2; wherein, a mounting hole is opened at the center of the lower end of the vertical part, and the upper end of the threaded rod 15 is fixedly inserted into the mounting hole; the spring 5 is arranged inside the outer box 2 and sleeved on the outside of the threaded rod 15; wherein, the upper end of the spring 5 is connected to the lower end of the vertical part, and the lower end of the spring 5 is connected to the inner wall of the bottom plate of the outer box 2; the fixing nut is arranged below the bottom plate of the outer box 2, and is cooperatively sleeved on the outside of the lower end extension of the threaded rod 15; wherein, the fixing nut and the lower end extension of the threaded rod 15 are threadedly connected, and the upper end surface of the fixing nut is in close contact with the lower surface of the bottom plate of the outer box 2.

[0043] In the utility model, the first rotary extrusion mechanism includes a rotating plate 6, a first rotating shaft 8 and a first gasket 7; the rotating plate 6 is an L-shaped plate structure, including a first plate segment and a second plate segment; the first plate segment and the second plate segment are arranged in an L shape; wherein, the first end of the first plate segment is rotatably connected to the extended end of the first connecting plate 4, the second end of the first plate segment is vertically connected to the first end of the second plate segment, the second end of the second plate segment extends toward the bottom plate direction of the outer box 2, and the second end of the second plate segment is a free end; wherein, the free end of the second plate segment can be tightly pressed against the side wall of the prefabricated plate body 1.

[0044] The first gasket 7 is arranged at the free end of the second plate segment; wherein, one side of the first gasket 7 is fixedly connected to the free end of the second plate segment, and the other side of the first gasket 7 is used to be in close contact with the side wall of the prefabricated plate body 1; preferably, the second gasket 7 is a rubber gasket.

[0045] The first rotating shaft 8 is rotatably arranged at the connection between the first plate segment and the second plate segment; wherein one end of the first rotating shaft 8 is connected to the inner wall of the front end plate of the outer box 2, and the other end of the first rotating shaft 8 is connected to the inner wall of the rear end plate of the outer box 2;

[0046] It should be noted that first connecting axes are respectively arranged on both sides of the extended end of the first connecting plate, a first U-shaped groove is opened at the first end of the first plate segment, and the extended end of the first connecting plate 4 is cooperated and arranged in the first U-shaped groove; a first straight groove 10 is arranged on the side wall of the first U-shaped groove; wherein, the long axis direction of the first straight groove 10 is consistent with the extension direction of the first plate segment, one end of the first connecting axis is fixedly connected to the side wall of the extended end of the first connecting plate 4, and the other end of the first connecting axis is slidably arranged in the first straight groove 10.

[0047] In the utility model, the second rotary extrusion mechanism includes a second connecting plate 9, a third connecting plate 11, a second rotating shaft 12 and a second gasket 14; an opening groove is provided at the edge of the upper end surface of the horizontal portion, the upper end of the opening groove is connected with the upper end surface of the horizontal portion, and the side of the opening groove is connected with the end surface of the horizontal portion; a vertical through groove is provided on the horizontal portion, and the vertical through groove is provided on one side close to the end of the horizontal portion; wherein the upper end of the vertical through groove is connected with the bottom of the opening groove, and the lower end of the vertical through groove is connected with the lower surface of the horizontal portion.

[0048] The third connecting plate 11 is vertically slidably inserted in the vertical through groove, and the lower end of the third connecting plate 11 can be tightly set against the top plate of the outer box 2, and the upper end of the third connecting plate 11 is rotatably connected to the first end of the second connecting plate 9; the second rotating shaft 12 is arranged in the opening groove and is arranged near the upper edge of the end of the horizontal part; the second connecting plate 9 is cooperatively arranged in the opening groove, and the middle part of the second connecting plate 9 is rotatably set on the second rotating shaft 12; the second end of the second connecting plate 9 is a free end, and the free end of the second connecting plate 9 can be abutted against the top surface of the prefabricated plate body 1.

[0049] It should be noted that second connecting shafts are respectively provided on both sides of the upper end of the third connecting plate 11, a second U-shaped groove is opened at the first end of the second connecting plate 9, and the upper end of the third connecting plate 11 is cooperated and arranged in the second U-shaped groove; a second straight groove 13 is provided on the side wall of the second U-shaped groove; wherein, the long axis direction of the second straight groove 13 is consistent with the extension direction of the second connecting plate 9, one end of the second connecting shaft is fixedly connected to the upper end side wall of the third connecting plate 11, and the other end of the second connecting shaft is slidably arranged in the second straight groove 13.

[0050] The second gasket 14 is arranged at the free end of the second connecting plate 9; wherein, one side of the second gasket 14 is fixedly connected to the free end of the second connecting plate 9, and the other side of the second gasket 14 is used to be in close contact with the top surface of the prefabricated plate body 1; preferably, the second gasket 14 is a rubber gasket.

[0051] Working principle:

[0052] When the connecting piece for truss reinforced concrete composite slabs described in the utility model is used, the outer box 2 is set in the reserved gap between two adjacent prefabricated slab bodies 1; the movable plate 3 is pressed downward, and when the movable plate 3 moves downward, the rotating plate 6 is driven by the first connecting plate 4 to rotate with the first rotating shaft 8 as the axis, and then the rotating plate 6 drives the first gasket 7 at its end to abut against the side wall of the prefabricated slab body 1, and forms a horizontal extrusion effect on the prefabricated slab body 1; at the same time, when the movable plate 3 moves downward, the bottom end of the third connecting plate 11 will abut against the top plate of the outer box 2, and squeeze the third connecting plate 11 to move upward; when the third connecting plate 11 moves upward in the vertical through groove, it drives the second connecting plate 9 to rotate with the second rotating shaft 12 as the axis. At this time, the upper end of the third connecting plate 11 rotates with the first end of the second connecting plate 9 and slides along the second straight groove 13. Then, the second connecting plate 9 drives the second gasket 14 arranged thereon to abut against the top surface of the prefabricated board body 1, and forms a downward extrusion effect on the prefabricated board body 1; secondly, when the movable plate 3 moves downward, the threaded rod 15 penetrates and extends to the bottom of the bottom plate of the outer box 2. If the rotating plate 6 and the second connecting plate 9 are both in contact with the prefabricated board body 1, the fixing nut is installed on the lower end extension of the threaded rod 15, and ensure that the upper end of the fixing nut is in close contact with the bottom plate of the outer box 2, thereby realizing the position fixing requirement of the movable block 3, and finally pouring concrete in the reserved gap between the two adjacent prefabricated board bodies 1 to complete the construction of the composite board.

[0053] In the utility model, a moving block 3 is arranged above the outer box 2, and the vertical part of the moving block 3 is extended to the inside of the outer box 2; both sides of the lower end of the vertical part of the moving block 3 are fixedly connected with the first connecting plates 4, and the two extended ends of the first connecting plates 4 are hinged with a rotating plate 6, and the free end of the rotating plate 6 is fixedly connected with a first gasket 7; the rotating plate 6 is L-shaped, and the middle part of the rotating plate 6 is movably connected with a first rotating shaft 8 fixedly connected to the outer box, and the rotating plate 6 can rotate with the first rotating shaft 8 as the axis; the rotating plate 6 is provided with a first straight slot 10 at one end close to the first connecting plate 4, and the first straight slot 10 is used for one end of the first connecting plate 4 to move inside the rotating plate 6 when the rotating plate 6 rotates.

[0054] Both ends of the horizontal part of the moving block 3 are fixedly connected with a second rotating shaft 12, the outside of the second rotating shaft 12 is movably connected with a second connecting plate 9, one end of the second connecting plate 9 is rotatably connected with a third connecting plate 11, and the other end of the second connecting plate 9 is fixedly connected with a second gasket 14; the second connecting plate 9 rotates with the second rotating shaft 12 as the axis, and a second straight slot 13 is provided at one end of the second connecting plate 9 close to the third connecting plate 11, and the second straight slot 13 is used for the top end of the third connecting plate 11 to slide inside the second connecting plate 9 when the second connecting plate 9 rotates; wherein, the second connecting plate 9 and the third connecting plate 11 both penetrate the outer wall of the moving block and extend to the outside thereof.

[0055] A threaded rod 15 is fixedly connected to the lower end of the vertical part of the moving block 3, and a spring 5 is arranged inside the outer box 2. The spring 5 is sleeved on the outside of the threaded rod 15 to squeeze the moving block 3 and keep it moving upward; the first gasket 7 and the second gasket 14 are both made of rubber material; since the first gasket 7 and the second gasket 14 have a large contact area with the outer wall of the prefabricated board body 1, the friction force is enhanced, thereby improving the anti-slip ability of the second connecting plate 9 and the rotating plate 6 after rotation, thereby reducing the possibility of displacement of the prefabricated board body 1.

[0056] It should be noted that when the moving block 3 moves downward, the bottom of the third connecting plate 11 can be abutted against the top of the outer box 2, and the third connecting plate 11 can be squeezed upward. When the third connecting plate 11 moves upward, it drives the second connecting plate 9 to rotate, and makes the second gasket 14 abut against the top of the prefabricated board body 1; when the moving block 3 moves downward, the rotating plate 6 is driven to rotate through the first connecting plate 4, and the first gasket 7 is abutted against the side wall of the prefabricated board body 1; at the same time, the bottom of the threaded rod 15 passes through the outer side of the bottom plate of the outer box 2, and the threaded rod 15 is fixedly connected to the bottom plate of the outer box 2 through a fixing nut; specifically, when the moving block 3 moves downward, it drives the threaded rod 15 to move downward, so that its bottom is located outside the outer box 2, and then the threaded rod 15 is threadedly connected to the fixing nut, thereby fixing the position of the moving block 3, and then fixing the position of the rotating plate 6 and the second connecting plate 9, and then the pouring operation is carried out.

[0057] The connecting piece described in the utility model has the function of conveniently fixing the position of the precast panel body 1 and preventing the displacement during the process of injecting concrete into the reserved gap between two adjacent precast panel bodies 1; when the moving block 3 is pressed to move downward, the moving block 3 drives the first connecting plate 4 to move downward, and drives the rotating plate 6 and the first gasket 7 thereon to rotate until the first gasket 7 abuts against the side wall of the precast panel body 1; while the moving block 3 moves downward, the third rotating plate 11 abuts against the top of the outer box 2 and is forced to move upward, and then the second rotating shaft 12 drives the second connecting plate 9 to rotate until the second gasket 14 abuts against the top of the precast panel body 1 and squeezes the precast panel body 1, thereby preventing the precast panel body 1 from deflecting.

[0058] The connecting piece for truss reinforced concrete composite slab described in the utility model can avoid the situation where the position of the precast slab body is offset during the pouring process when the precast slab body is impacted by concrete pouring, and can effectively improve the positioning accuracy of the composite slab; secondly, it enables two adjacent precast slab bodies to be fixedly connected as a whole, thereby improving the connection strength between any two adjacent precast slab bodies; the connection between the composite slab units is fast, convenient, and compact, thereby increasing the structural strength of the connection between the composite slabs, and having stronger stability and structural properties; at the same time, it can effectively enhance the structural strength of the connection between the two composite slabs and the concrete pouring layer, and has stronger practicality.

[0059] The above embodiment is only one of the implementation methods that can realize the technical solution of the utility model. The scope of protection required by the utility model is not limited only to this embodiment, but also includes within the technical scope disclosed by the utility model, any changes, replacements and other implementation methods that can be easily thought of by any technician familiar with the technical field.

Claims

1. A connector for a truss reinforced concrete composite slab, characterized in that: The invention comprises an outer box (2), a moving block (3), two first connecting plates (4), two first rotating extrusion mechanisms, a threaded rod (15) and a fixing nut; the outer box (2) is arranged between the reserved gaps of two adjacent prefabricated plate bodies (1); wherein the outer box (2) is a hollow rectangular parallelepiped structure, a first through hole is arranged at the center of the top plate of the outer box (2), and a second through hole is arranged at the center of the bottom plate of the outer box (2); The movable block (3) comprises a horizontal portion and a vertical portion, wherein the horizontal portion is arranged above the top plate of the outer box (2), and the vertical portion is vertically movable and inserted into the first through hole; wherein the upper end of the vertical portion is connected to the center of the lower surface of the horizontal portion, and the lower end of the vertical portion extends to the interior of the outer box (2); two first connecting plates (4) are symmetrically arranged on both sides of the lower end of the vertical portion; wherein one end of the first connecting plate (4) is connected to the lower end side wall of the vertical portion, and the other end of the first connecting plate (4) extends horizontally toward the side plate direction of the outer box (2); Two first rotary extrusion mechanisms are symmetrically arranged in the outer box (2) and are respectively arranged on both sides of the vertical portion; wherein the middle portion of the first rotary extrusion mechanism is rotationally connected to the inner wall of the end plate of the outer box (2), one end of the first rotary extrusion mechanism is rotationally connected to the extended end of the first connecting plate (4), and the other end of the first rotary extrusion mechanism penetrates the side plate of the outer box (2) and abuts against the side wall of the prefabricated panel body (1); The threaded rod (15) is vertically movably inserted into the second through hole, the upper end of the threaded rod (15) is connected to the lower end of the vertical portion, and the lower end of the threaded rod (15) extends to below the bottom plate of the outer box (2); the fixing nut is arranged below the bottom plate of the outer box (2) and is fitted and sleeved on the outer side of the lower end extension of the threaded rod (15).

2. A connector for truss reinforced concrete composite slab according to claim 1, characterized in that: The first rotary extrusion mechanism comprises a rotary plate (6) and a first rotary shaft (8); The rotating plate (6) comprises a first plate segment and a second plate segment, wherein the first plate segment and the second plate segment are arranged in an L shape; wherein the first end of the first plate segment is rotatably connected to the extended end of the first connecting plate (4), the second end of the first plate segment is vertically connected to the first end of the second plate segment, and the second end of the second plate segment is a free end; wherein the free end of the second plate segment can be tightly pressed against the side wall of the prefabricated plate body (1); The first rotating shaft (8) is rotatably arranged at the connection between the first plate segment and the second plate segment; wherein one end of the first rotating shaft (8) is connected to the inner wall of the front end plate of the outer box (2), and the other end of the first rotating shaft (8) is connected to the inner wall of the rear end plate of the outer box (2); wherein a vertical opening is provided on the side plate of the outer box (2), and the vertical opening is used for the free end of the second plate segment to pass through.

3. A connector for truss reinforced concrete composite slab according to claim 2, characterized in that: The first rotary extrusion mechanism also includes a first gasket (7), which is arranged at the free end of the second plate segment; wherein one side of the first gasket (7) is fixedly connected to the free end of the second plate segment, and the other side of the first gasket (7) is used to be in close contact with the side wall of the prefabricated plate body (1).

4. A connector for truss reinforced concrete composite slab according to claim 3, characterized in that: The first gasket (7) is a rubber gasket.

5. A connector for truss reinforced concrete composite slab according to claim 2, characterized in that: A first connecting shaft is respectively arranged on both sides of the extended end of the first connecting plate, a first U-shaped slot is opened at the first end of the first plate section, and a first straight slot (10) is arranged on the side wall of the first U-shaped slot; wherein the long axis direction of the first straight slot (10) is consistent with the extension direction of the first plate section, one end of the first connecting shaft is fixedly connected to the side wall of the extended end of the first connecting plate (4), and the other end of the first connecting shaft is slidably arranged in the first straight slot (10).

6. A connector for truss reinforced concrete composite slab according to claim 1, characterized in that: It also includes a spring (5); the spring (5) is arranged inside the outer box (2) and is sleeved on the outside of the threaded rod (15); wherein the upper end of the spring (5) is connected to the lower end of the vertical portion, and the lower end of the spring (5) is connected to the inner wall of the bottom plate of the outer box (2).

7. A connector for truss reinforced concrete composite slab according to claim 1, characterized in that: It also includes two second rotary extrusion mechanisms; the two second rotary extrusion mechanisms are symmetrically arranged at the two ends of the horizontal part, and the middle part of the second rotary extrusion mechanism is rotatably connected to the horizontal part; wherein one end of the second rotary extrusion mechanism can be tightly arranged against the top plate of the outer box (2), and the other end of the second rotary extrusion mechanism can be in contact with the top surface of the prefabricated panel body (1).

8. A connector for truss reinforced concrete composite slabs according to claim 7, characterized in that: The second rotary extrusion mechanism comprises a second connecting plate (9) and a third connecting plate (11); The horizontal portion is provided with a vertical through groove, the vertical through groove is provided near the end of the horizontal portion, and the third connecting plate (11) is vertically slidably inserted into the vertical through groove; the lower end of the third connecting plate (11) can be tightly arranged with the top plate of the outer box (2), the upper end of the third connecting plate (11) is rotatably connected with the first end of the second connecting plate (9), the middle part of the second connecting plate (9) is rotatably connected with the upper edge of the end of the horizontal portion, and the second end of the second connecting plate (9) is a free end; wherein the free end of the second connecting plate (9) can be in contact with the top surface of the prefabricated plate body (1).

9. A connector for truss reinforced concrete composite slab according to claim 8, characterized in that: Second connecting shafts are respectively arranged on both sides of the upper end of the third connecting plate (11); a second U-shaped notch is opened at the first end of the second connecting plate (9); and a second straight notch (13) is arranged on the side wall of the second U-shaped notch; wherein the long axis direction of the second straight notch (13) is consistent with the extension direction of the second connecting plate (9); one end of the second connecting shaft is fixedly connected to the upper end side wall of the third connecting plate (11); and the other end of the second connecting shaft is slidably arranged in the second straight notch (13).

10. A connector for truss reinforced concrete composite slabs according to claim 8, characterized in that: The second rotary extrusion mechanism also includes a second gasket (14), which is arranged at the free end of the second connecting plate (9); wherein one side of the second gasket (14) is fixedly connected to the free end of the second connecting plate (9), and the other side of the second gasket (14) is used to be in close contact with the top surface of the prefabricated plate body (1); wherein the second gasket (14) is a rubber gasket.

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