Prefabricated bidirectional prestressed concrete laminated slab

Abstract

The utility model relates to the technical field of floor slab structures, and discloses a prefabricated bidirectional prestressed concrete laminated slab, which comprises a laminated slab, two collecting boxes and two side plates, a plurality of uniformly distributed stress steel wires are fixedly connected in the laminated slab, and supporting blocks are arranged at four corners of the top end of the laminated slab. The sides, close to each other, of the multiple supporting blocks are fixedly connected with mounting bases. The multiple mounting bases are fixedly connected to the outer sides of the front and rear ends of the side plates correspondingly, limiting grooves are formed in the front and rear ends of the two sides of the two side plates correspondingly, mounting grooves are formed in the two sides of the inner side walls of the multiple mounting blocks correspondingly, and first springs are fixedly connected to one sides of the inner side walls of the multiple mounting grooves correspondingly. According to the utility model, the supporting blocks are placed at the top ends of the laminated slabs and are fixed through the bolts, and the side plates are inserted into the mounting seats and are fixed through the limiting blocks, so that when the laminated slabs are transported and stacked, the side plates and the supporting blocks can uniformly share the weight of the laminated slabs on the side plates and the supporting blocks.

Description

Technical Field

[0001] The utility model relates to the technical field of floor slab structures, in particular to a prefabricated bidirectional prestressed concrete composite slab. Background Art

[0002] Concrete composite slab is a new type of prefabricated building component, which combines precast concrete slab with concrete cast on site to form an integral floor structure. Concrete composite slab usually consists of two parts: the bottom is a precast concrete base plate, and the upper part is a concrete composite layer cast on site. The precast base plate usually has a certain rough surface to enhance the bonding strength with the composite layer. Concrete composite slab needs to be transported after prefabrication.

[0003] During transportation, the composite panels are often stacked on a transport vehicle for multiple transportation. During transportation, the composite panels are usually supported by supporting wooden blocks at the four corners. The supporting effect is poor, and cracks are easily formed at the bottom of the composite panels, affecting the quality of the composite panels. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a prefabricated bidirectional prestressed concrete composite slab, which aims to improve the problem in the prior art that the composite slabs are often supported by supporting wood at the four corners during transportation, and the supporting effect is poor, and cracks are prone to appear at the bottom of the composite slab, affecting the quality of the composite slab.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a prefabricated bidirectional prestressed concrete composite plate, comprising a composite plate, two collecting boxes and two side plates, wherein a plurality of uniformly distributed stress steel wires are fixedly connected inside the composite plate, support blocks are arranged at the four corners of the top of the composite plate, and a plurality of the support blocks are fixedly connected to a mounting seat on one side close to each other;

[0006] The multiple mounting seats are respectively fixedly connected to the outer sides of the front and rear ends of the side panels, and limiting grooves are provided at the front and rear ends of both sides of the two side panels. Both sides of the inner side walls of the multiple mounting blocks are provided with mounting grooves, and one side of the inner side walls of the multiple mounting grooves is fixedly connected with a spring 1, and the other ends of the multiple springs 1 are fixedly connected to the limiting blocks, and the other ends of the multiple limiting blocks are slidably connected to the inside of the limiting grooves, and the limiting blocks fix the side panels in the extended state.

[0007] As a further description of the above technical solution:

[0008] The front and rear ends of the side where the two side plates are close to each other are fixedly connected with cross bars.

[0009] As a further description of the above technical solution:

[0010] A fixing plate is fixedly connected to one side of the two collecting boxes that are close to each other. The two collecting boxes are clamped on the top of the side plate, and the fixing plate is used to fix the collecting boxes.

[0011] As a further description of the above technical solution:

[0012] The two collection boxes are both rotatably connected with a rotating shaft inside, and the outer sides of the two rotating shafts are fixedly connected with rollers. The outer sides of the two rollers are surrounded by traction ropes, and one end of the two rotating shafts passes through the collection box, and the rollers are used to store the traction ropes.

[0013] As a further description of the above technical solution:

[0014] The front ends of the two collection boxes are fixedly connected with an annular block, the annular block is arranged on the outside of the rotating shaft, the inner top wall of the annular block is opened with a cavity, the inside of the two cavities are slidably connected with a fixed block, the top ends of the two fixed blocks are fixedly connected with a pull rod, and spring 2 is arranged on the outside of the two pull rods.

[0015] As a further description of the above technical solution:

[0016] One end of the two springs is fixedly connected to the top wall of the installation groove, and the other end of the two springs is fixedly connected to the side of the fixed block close to the pull rod. A fixing groove is provided at the top of the rotating shaft, and one end of the two fixing blocks away from the pull rod is slidably connected to the inside of the fixing groove, and the fixing block fixes the rotating shaft in the extended state.

[0017] As a further description of the above technical solution:

[0018] One side of the two fixing blocks is provided with a slot, the inside of the two slots is slidably connected with an insert block, the other ends of the two insert blocks penetrate the front end of the inner wall of the cavity, and the insert block is used to limit the fixing block.

[0019] The utility model has the following beneficial effects:

[0020] In the utility model, a support block is placed on the top of the composite plate and fixed by bolts, and the side plate is inserted into the mounting seat and fixed by a limit block, so that the side plate and the support block can evenly share the weight of the upper composite plate when the staff transports and stacks the composite plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of a prefabricated bidirectional prestressed concrete composite slab proposed by the utility model;

[0022] Figure 2 A three-dimensional diagram of a stress steel wire of a prefabricated bidirectional prestressed concrete composite slab proposed by the utility model;

[0023] Figure 3 A three-dimensional cross-sectional view of a side plate of a prefabricated bidirectional prestressed concrete composite slab proposed by the utility model;

[0024] Figure 4 This is a three-dimensional cross-sectional view of a support block of a prefabricated bidirectional prestressed concrete composite slab proposed by the utility model;

[0025] Figure 5 A three-dimensional cross-sectional view of a collection box of a prefabricated bidirectional prestressed concrete composite slab proposed by the utility model;

[0026] Figure 6 The utility model is a schematic diagram of the structure of a fixing ring of a prefabricated bidirectional prestressed concrete composite slab.

[0027] Legend:

[0028] 1. Composite plate; 2. Support block; 3. Cross bar; 4. Stress wire; 5. Collection box; 6. Side plate; 7. Limiting groove; 8. Mounting seat; 9. Mounting groove; 10. Insert block; 11. Pull rod; 12. Slot; 13. Spring 1; 14. Limiting block; 15. Roller; 16. Fixed plate; 17. Traction rope; 18. Ring block; 19. Rotating shaft; 20. Fixed groove; 21. Fixed block; 22. Spring 2; 23. Cavity. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Reference Figure 1-6The utility model provides an embodiment: a prefabricated bidirectional prestressed concrete composite slab, comprising a composite slab 1, two collecting boxes 5 and two side panels 6, wherein a plurality of uniformly distributed stress steel wires 4 are fixedly connected inside the composite slab 1, and support blocks 2 are arranged at the four corners of the top of the composite slab 1, and the support blocks 2 are directly placed on the top of the composite slab 1, and there is no connection relationship between the two, and they are connected to the composite slab 1 by bolts, and the sides of the plurality of support blocks 2 close to each other are fixedly connected with mounting seats 8, and the bottom of the composite slab 1 is provided with mutually orthogonal high-strength neck stress steel wires 4 at the time of prefabrication, so as to increase the load-bearing capacity of the composite slab 1, and the composite slab 1 can be manufactured as a whole or in blocks during prefabrication, and the stress steel wires 4 around the whole composite slab 1 can be directly inserted into the inside of the support on the wall during installation, and the stress steel wires 4 between the two composite slabs 1 of the block composite slab 1 are overlapped and then connected by twisting, or connected by special steel bar connectors; and the total amount of steel used in the prefabrication of the composite slab 1 is small and economical.

[0031] A plurality of mounting seats 8 are respectively fixedly connected to the outer sides of the front and rear ends of the side panels 6, and limiting grooves 7 are provided at the front and rear ends of both sides of the two side panels 6. Mounting grooves 9 are provided on both sides of the inner side walls of a plurality of mounting blocks. A spring 13 is fixedly connected to one side of the inner side walls of a plurality of mounting grooves 9, and the other ends of a plurality of springs 13 are fixedly connected to limiting blocks 14, and the other ends of a plurality of limiting blocks 14 are slidably connected to the inside of the limiting grooves 7. The limiting blocks 14 fix the side panels 6 in the extended state, and the support blocks 2 are placed at the four corners of the top of the composite plate 1, and the support blocks 2 are fixed with bolts, and the side panels 6 are inserted into the mounting seats 8 and the springs 13 are used to push the limiting blocks 14 into the limiting grooves 7 to fix the side panels 6, so that the side panels 6 and the support blocks 2 can evenly share the weight of the upper composite plate 1 when the staff transports and stacks the composite plate 1.

[0032] The front and rear ends of the side where the two side panels 6 are close to each other are fixedly connected with a cross bar 3, and the cross bar 3 can increase the load-bearing capacity of the side panels 6.

[0033] The two collecting boxes 5 are fixedly connected to a fixing plate 16 on one side close to each other. The two collecting boxes 5 are both engaged at the top of the side plate 6. The fixing plate 16 is used to fix the collecting boxes 5. The collecting boxes 5 are placed on the outside of the side plate 6, and the fixing plate 16 is attached to the inside of the side plate 6. The collecting boxes 5 are engaged and fixed to the top of the side plate 6 using the slot formed by the fixing plate 16 and the collecting boxes 5.

[0034] The two collecting boxes 5 are both rotatably connected with a rotating shaft 19, and the outer sides of the two rotating shafts 19 are fixedly connected with rollers 15. The outer sides of the two rollers 15 are surrounded by traction ropes 17. One end of the two rotating shafts 19 passes through the collecting box 5. The rollers 15 are used to store the traction ropes 17. The rotating shafts 19 are rotated by hand to make the rollers 15 store the traction ropes 17, and the collecting box 5 is pulled upward to remove the collecting box 5 from the side panel 6.

[0035] The front ends of the two collecting boxes 5 are fixedly connected with an annular block 18, which is arranged on the outside of the rotating shaft 19. The annular block 18 is sleeved on the outside of the rotating shaft 19, and there is no connection between the two. The inner top wall of the annular block 18 is provided with a cavity 23, and the inside of the two cavities 23 are slidably connected with a fixed block 21. The top ends of the two fixed blocks 21 are fixedly connected with a pull rod 11, and the outside of the two pull rods 11 are provided with a spring 22. The spring 22 is used to push the fixed block 21 into the fixed groove 20, so as to fix the rotating shaft 19 and prevent the roller 15 from rotating accidentally.

[0036] One end of the two springs 22 is fixedly connected to the top wall of the installation groove 9, and the other end of the two springs 22 is fixedly connected to the side of the fixing block 21 close to the pull rod 11. A fixing groove 20 is opened at the top of the rotating shaft 19, and the ends of the two fixing blocks 21 away from the pull rod 11 are slidably connected inside the fixing groove 20. The fixing block 21 fixes the rotating shaft 19 in the extended state. When there is no need to pull the overlapping plate 1, the rotating shaft 19 can be rotated by hand to make the roller 15 store the traction rope 17, and then the spring 22 is used to push the fixing block 21 into the fixing groove 20, so as to fix the rotating shaft 19 and prevent the roller 15 from rotating accidentally.

[0037] A slot 12 is provided on one side of the two fixed blocks 21, and the two slots 12 are slidably connected with the plug blocks 10. The other ends of the two plug blocks 10 pass through the front end of the inner wall of the cavity 23. The plug blocks 10 are used to limit the fixed blocks 21. The pull rod 11 is pulled to retract the fixed blocks 21 into the cavity 23, and the plug blocks 10 are extended into the slot 12. At the same time, the rotating shaft 19 is rotated to release the traction rope 17 wrapped around the outside of the roller 15. When hoisting the composite board 1, the staff can pull the traction rope 17 to adjust the direction of the composite board 1 to prevent the composite board 1 from being damaged by collision due to rotation and shaking during hoisting.

[0038] Working principle: After the prefabrication of the composite board 1 is completed, the support block 2 can be placed at the four corners of the top of the composite board 1, and the support block 2 can be fixed with bolts, and the side panel 6 can be inserted into the mounting seat 8 and the spring 13 can be used to push the limit block 14 into the limit groove 7 to fix the side panel 6, so that when the staff transports and stacks the composite board 1, the side panel 6 and the support block 2 can evenly share the weight of the upper composite board 1 to prevent cracks from appearing at the bottom of the upper composite board 1. At the same time, when the composite board 1 needs to be hoisted, the hooks on the steel cable can be fixed to the holes above the support block 2, and the collection box 5 can be snapped onto the top of the side panel 6; the pull rod 11 is pulled to retract the fixing block 21 into the cavity 23, and the insertion block 10 is extended. Insert it into the slot 12, and at the same time rotate the shaft 19 to release the traction rope 17 wrapped around the outside of the roller 15. When hoisting the composite board 1, the staff can pull the traction rope 17 to adjust the direction of the composite board 1 to prevent the composite board 1 from being damaged by collision due to rotation and shaking during hoisting; after the composite board 1 is hoisted to a suitable position, the bolts can be unscrewed to remove the support block 2 from the composite board 1, and then the top of the composite board 1 is polished by a polishing machine to make the surface of the composite board 1 rough, which can ensure effective bonding with the new cast-in-place concrete on the upper layer, form an overall force, meet the force performance and safety of the building, and the horizontal formwork of the composite board 1 can be removed during the hoisting construction to reduce vertical support, save manpower and construction materials.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A prefabricated bidirectional prestressed concrete composite slab, comprising a composite slab (1), two collecting boxes (5) and two side plates (6), characterized in that: A plurality of uniformly distributed stress steel wires (4) are fixedly connected inside the composite plate (1), support blocks (2) are arranged at four corners of the top end of the composite plate (1), and a mounting seat (8) is fixedly connected to one side of the plurality of support blocks (2) close to each other; The plurality of mounting seats (8) are respectively fixedly connected to the outer sides of the front and rear ends of the side plates (6); the front and rear ends of both sides of the two side plates (6) are provided with limit slots (7); the inner side walls of the plurality of mounting seats are provided with mounting slots (9) on both sides; one side of the inner side walls of the plurality of mounting slots (9) is fixedly connected to a spring 1 (13); the other ends of the plurality of spring 1 (13) are fixedly connected to a limit block (14); the other ends of the plurality of limit blocks (14) are slidably connected to the inside of the limit slot (7); the limit blocks (14) fix the side plates (6) in an extended state.

2. The prefabricated bidirectional prestressed concrete composite slab according to claim 1, characterized in that: The front and rear ends of the side where the two side panels (6) are close to each other are fixedly connected with a cross bar (3).

3. The prefabricated bidirectional prestressed concrete composite slab according to claim 1, characterized in that: A fixing plate (16) is fixedly connected to one side of the two collecting boxes (5) that are close to each other. The two collecting boxes (5) are both engaged with the top of the side plate (6). The fixing plate (16) is used to fix the collecting boxes (5).

4. The prefabricated bidirectional prestressed concrete composite slab according to claim 1, characterized in that: The two collection boxes (5) are both rotatably connected with a rotating shaft (19), the outer sides of the two rotating shafts (19) are both fixedly connected with rollers (15), the outer sides of the two rollers (15) are both surrounded by a traction rope (17), one end of the two rotating shafts (19) passes through the collection box (5), and the rollers (15) are used to store the traction rope (17).

5. The prefabricated bidirectional prestressed concrete composite slab according to claim 1, characterized in that: The front ends of the two collecting boxes (5) are fixedly connected to an annular block (18), the annular block (18) is arranged on the outside of the rotating shaft (19), the inner top wall of the annular block (18) is provided with a cavity (23), the inside of the two cavities (23) are slidably connected to a fixed block (21), the top ends of the two fixed blocks (21) are fixedly connected to a pull rod (11), and the outsides of the two pull rods (11) are provided with a second spring (22).

6. The prefabricated bidirectional prestressed concrete composite slab according to claim 5, characterized in that: One end of the two springs (22) is fixedly connected to the top wall of the installation groove (9), and the other end of the two springs (22) is fixedly connected to the side of the fixing block (21) close to the pull rod (11). A fixing groove (20) is provided at the top of the rotating shaft (19), and one end of the two fixing blocks (21) away from the pull rod (11) is slidably connected inside the fixing groove (20). The fixing blocks (21) fix the rotating shaft (19) in the extended state.

7. The prefabricated bidirectional prestressed concrete composite slab according to claim 5, characterized in that: A slot (12) is provided on one side of the two fixing blocks (21), and an insert block (10) is slidably connected inside the two slots (12). The other ends of the two insert blocks (10) penetrate the front end of the inner wall of the cavity (23), and the insert block (10) is used to limit the fixing block (21).

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