Supporting-free closely-spliced laminated slab leveling device

Abstract

The supporting-free closely-spliced laminated slab leveling device comprises a first profile steel part and a second profile steel part, through holes are formed in the first profile steel part and the second profile steel part in a penetrating mode, first bolts are arranged in the through holes, first nuts are arranged above the first profile steel part, and the first nuts are in threaded connection with the first bolts. Through the arrangement of the first profile steel part, the second profile steel part and the first bolt, during use, the second profile steel part is arranged below the laminated slab prefabricated part, the first bolt penetrates through a hole in the laminated slab prefabricated part, and the first profile steel part is moved downwards by rotating the first nut; the structural steel supporting plates make contact with reinforcing ribs of the laminated slab prefabricated parts to form supporting, the two laminated slab prefabricated parts are gradually leveled by rotating the first nuts, use is easy, the first bolts are protected through the arrangement of the hose sleeves, the first bolts can be prevented from making contact with concrete, and the first bolts can be conveniently dismantled.

Description

Technical Field

[0001] The present invention relates to the technical field of laminated slab processing, and specifically relates to a leveling device for closely jointed and self-supporting-free laminated slabs. Background Technique

[0002] The laminated slab, that is, the laminated floor slab, is an assembled monolithic floor slab formed by laminating a precast slab and a cast-in-place reinforced concrete layer. The laminated floor slab has good integrity, and the upper and lower surfaces of the slab are flat, which is convenient for the decoration of the finishing layer. It is suitable for high-rise buildings and large-span buildings with high requirements for overall stiffness. The technology of prefabricated laminated slabs is widely used. With the development of industry technology and market demand, the application of formwork-free and self-supporting-free laminated slabs is increasing, and then the application of closely jointed and self-supporting-free laminated slabs will be more and more.

[0003] In the prior art, due to reasons such as the discreteness of the properties of concrete materials, the discreteness of the tensile values of prestressed steel bars, and the errors of component sizes, the deformation discreteness of different precast laminated slab components is very large. There is often a height difference at the bottom surface of the joint between the two laminated slabs at the closely jointed part, resulting in poor aesthetics after the structure is completed and not meeting the requirements of buildings with high flatness requirements. Summary of the Invention

[0004] The purpose of the present invention is to provide a leveling device for closely jointed and self-supporting-free laminated slabs to solve the problems raised in the above background technique. Due to reasons such as the discreteness of the properties of concrete materials, the discreteness of the tensile values of prestressed steel bars, and the errors of component sizes, the deformation discreteness of different precast laminated slab components is very large. There is often a height difference at the bottom surface of the joint between the two laminated slabs at the closely jointed part, resulting in poor aesthetics after the structure is completed and not meeting the requirements of buildings with high flatness requirements.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A leveling device for closely jointed and self-supporting-free laminated slabs includes a first steel member and a second steel member. Through holes are respectively formed through the interiors of the first steel member and the second steel member. A first bolt is arranged inside the through holes. A first nut is arranged above the first steel member, and the first nut is threadedly connected to the first bolt. A hose sleeve is sleeved outside the first bolt. A rubber pad is arranged at the lower end of the second steel member and below the hose sleeve, and the rubber pad is sleeved on the first bolt. On both sides of the middle part of the lower end of the first steel member, bottom mounting frames are fixedly connected respectively. An internal threaded rod is fixedly connected inside the bottom mounting frames. On both sides of the internal threaded rod at both ends of the bottom mounting frames, limiting blocks are fixedly connected respectively. At both ends of the bottom mounting frames, steel support plates are arranged. A fastening notch is formed in the middle of the upper end of the steel support plate. Limiting holes are respectively formed on both sides of the middle part of the upper end of the steel support plate. The limiting holes are clamped with the limiting blocks. Second nuts are threadedly connected to both ends of the internal threaded rod. A hole needs to be opened in the precast laminated slab component, and its diameter is equal to the outer ring diameter of the hose sleeve.

[0006] Preferably, a connecting collar is fixedly connected to the upper end of the rubber pad. The connecting collar is inserted into the hose sleeve, and an interference fit is provided between the connecting collar and the hose sleeve.

[0007] Preferably, a second extension piece is fixedly connected to the upper end of the hexagonal block of the first bolt, and a first extension piece is fixedly connected to the lower end of the first nut.

[0008] Preferably, extension plates are fixedly connected to the upper ends on both sides of the bottom mounting frame, and first reinforcing ribs are fixedly connected between the upper ends of the extension plates and the sides of the first steel member.

[0009] Preferably, a reinforcing side plate is provided above the middle of one side of the steel support plate, and the reinforcing side plate is inserted into the end of the inner threaded rod.

[0010] Preferably, second reinforcing ribs are fixedly connected to both sides of the middle inside the bottom mounting frame, reinforcing sleeves are fixedly connected to the middle of both sides inside the bottom mounting frame, the inner threaded rod passes through the reinforcing sleeves, and fourth reinforcing ribs are fixedly connected between the outer surface of the reinforcing sleeves and the upper end inside the bottom mounting frame.

[0011] Preferably, first side plates are provided on one side of the first steel member and the second steel member, inner support ribs are fixedly connected to both sides of the middle of one side of the first side plates, and the distance between the two inner support ribs is equal to the width of the through hole.

[0012] Preferably, a third reinforcing rib is fixedly connected to one side of the inner support rib, and the inner support rib is inserted into the first steel member and the second steel member.

[0013] Preferably, second side plates are provided on the other side of the first steel member and the second steel member, insertion plates are fixedly connected to both sides of the middle of one side of the second side plates, and the insertion plates are inserted into the ends of the inner support ribs.

[0014] Preferably, through holes are provided on both sides of the middle of the first side plate and the second side plate, and a second bolt is installed between the two through holes.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In the present invention, through the arrangement of the first steel member, the second steel member and the first bolt, during use, the second steel member is placed below the precast laminated slab member, the first bolt passes through the holes in the precast laminated slab member, and by rotating the first nut, the first steel member is moved downward so that the steel support plate contacts the stiffener of the precast laminated slab member to form a support. By rotating the first nut, the leveling between two precast laminated slab members is gradually adjusted. The use is relatively simple. Through the arrangement of the hose sleeve, the first bolt is protected to avoid contact with concrete, facilitating the removal of the first bolt. Through the arrangement of the rubber pad, the lower end of the hole of the precast laminated slab member is blocked to prevent concrete from contacting the second steel member, thus facilitating the removal of the second steel member and at the same time preventing the concrete from flowing downward. Through the arrangement of the inner threaded rod, it is installed and fixed by means of threads, making subsequent disassembly more convenient. The steel support plate can cut off the excess part according to requirements, or apply a release agent on the surface before use, and it can be disassembled later. The use is relatively convenient.

[0017] 2. In the present invention, through the arrangement of the connecting collar, the connection stability with the hose sleeve is increased. Through the arrangement of the second extension piece and the first extension piece, the contact area with the first steel member and the second steel member is increased, thereby increasing the use stability. Through the arrangement of the extension plate, the upper end of the steel support plate is restricted to ensure the position of each steel support plate, making the leveling more accurate. Through the arrangement of the reinforcement side plate, the force on the steel support plate is more uniform. Through the arrangement of the first reinforcing rib, it is used to increase the bearing strength of the bottom mounting frame and ensure the use stability.

[0018] 3. In the present invention, through the arrangement of the reinforcement sleeve, the connection area between the inner threaded rod and the bottom mounting frame is increased to ensure the connection strength of the inner threaded rod. Through the arrangement of the fourth reinforcing rib, the stability is further increased, which can ensure that the steel support plate does not shift during use and ensure the use stability. Through the arrangement of the inner support rib and the third reinforcing rib, they are installed by means of plugging, which can improve the strength of the first steel member and the second steel member, avoid depression due to excessive pressure, and at the same time guide the first bolt to prevent the thread of the first bolt from rubbing against the edge of the through hole, making the installation smoother and convenient for installation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic three-dimensional structure diagram of a leveling device for a non-supporting and closely assembled laminated slab of the present invention Figure 1 ;

[0020] Figure 2 is a schematic three-dimensional structure diagram of a leveling device for a non-supporting and closely assembled laminated slab of the present invention Figure 2 ;

[0021] Figure 3 is an exploded view of a leveling device for a non-supporting and closely assembled laminated slab of the present invention;

[0022] Figure 4 For a leveling device for a self - supporting and closely - assembled laminated board of the present invention Figure 3 Schematic diagram of the enlarged structure of area A in it;

[0023] Figure 5 Schematic three - dimensional structure diagram of the first steel member in a leveling device for a self - supporting and closely - assembled laminated board of the present invention;

[0024] Figure 6 For a leveling device for a self - supporting and closely - assembled laminated board of the present invention Figure 5 Schematic diagram of the enlarged structure of area B in it;

[0025] Figure 7 Front - view sectional structure diagram of the first steel member in a leveling device for a self - supporting and closely - assembled laminated board of the present invention;

[0026] Figure 8 Schematic diagram of the connection structure between the first steel member and the internal support rib in a leveling device for a self - supporting and closely - assembled laminated board of the present invention.

[0027] In the figure:

[0028] 1. First steel member; 2. Second steel member; 3. Bottom mounting frame; 4. Steel member support plate; 5. First bolt; 6. First nut; 7. First extension piece; 8. Hose sleeve; 9. Rubber pad; 10. First side plate; 11. Second bolt; 12. Second nut; 13. Internal threaded rod; 14. Extension plate; 15. First reinforcing rib; 16. Through - hole; 17. Second extension piece; 18. Second reinforcing rib; 19. Limiting block; 20. Reinforcing sleeve; 21. Second side plate; 22. Reinforcing side plate; 23. Internal support rib; 24. Third reinforcing rib; 25. Connecting collar; 26. Limiting hole; 27. Fastening notch; 28. Insertion plate; 29. Through - hole; 30. Fourth reinforcing rib. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1: Refer to Figures 1 - 8As shown: A leveling device for closely assembled and overlapped plates without bracing, including a first steel member 1 and a second steel member 2. Through holes 16 are penetrated through the interiors of the first steel member 1 and the second steel member 2. A first bolt 5 is arranged inside the through hole 16. A first nut 6 is arranged above the first steel member 1. The first nut 6 is threadedly connected to the first bolt 5. A hose sleeve 8 is sleeved on the outer side of the first bolt 5. A rubber pad 9 is arranged at the lower end of the second steel member 2 and below the hose sleeve 8. The rubber pad 9 is sleeved on the first bolt 5. Both sides of the middle part of the lower end of the first steel member 1 are fixedly connected with bottom mounting frames 3. An internal threaded rod 13 is fixedly connected inside the bottom mounting frame 3. Limit clamping blocks 19 are fixedly connected to both ends of the bottom mounting frame 3 and on both sides of the internal threaded rod 13. Steel support plates 4 are arranged at both ends of the bottom mounting frame 3. A fastening notch 27 is opened in the middle of the upper end of the steel support plate 4. Limit clamping holes 26 are opened on both sides of the middle part of the upper end of the steel support plate 4. The limit clamping holes 26 are clamped with the limit clamping blocks 19. Second nuts 12 are threadedly connected to both ends of the internal threaded rod 13. Holes need to be opened in the precast members of the overlapped plates, and the diameter thereof is equal to the outer ring diameter of the hose sleeve 8.

[0031] In the present invention, through the settings of the first steel member 1, the second steel member 2 and the first bolt 5, during use, the second steel member 2 is placed below the precast member of the overlapped plate, the first bolt 5 is passed through the hole in the precast member of the overlapped plate, and by rotating the first nut 6, the first steel member 1 is moved downward to make the steel support plate 4 contact the rib of the precast member of the overlapped plate to form a support. By rotating the first nut 6, the leveling between the two precast members of the overlapped plates is gradually achieved. The use is relatively simple. Through the setting of the hose sleeve 8, the first bolt 5 is protected to avoid contact with concrete, so as to facilitate the removal of the first bolt 5. Through the setting of the rubber pad 9, the lower end of the hole of the precast member of the overlapped plate is blocked to avoid contact between the concrete and the second steel member 2, thereby facilitating the removal of the second steel member 2 and at the same time avoiding the flow of concrete. Through the setting of the internal threaded rod 13, it is installed and fixed in a threaded manner, making the subsequent disassembly more convenient. The steel support plate 4 can cut off the redundant part according to requirements, or apply a release agent on the surface before use, and it can be disassembled later. The use is relatively convenient.

[0032] Embodiment 2: Figures 1 - 3 As shown, a connecting collar 25 is fixedly connected to the upper end of the rubber pad 9. The connecting collar 25 is inserted into the hose sleeve 8. The connecting collar 25 and the hose sleeve 8 are in interference fit. A second extension piece 17 is fixedly connected to the upper end of the hexagonal block of the first bolt 5. A first extension piece 7 is fixedly connected to the lower end of the first nut 6. Extension plates 14 are fixedly connected to the upper ends of both sides of the bottom mounting frame 3. A first reinforcing rib 15 is fixedly connected between the upper end of the extension plate 14 and the side surface of the first steel member 1. A reinforcing side plate 22 is arranged above the middle part of one side of the steel support plate 4. The reinforcing side plate 22 is inserted into the end of the internal threaded rod 13.

[0033] In the present invention, through the setting of the connecting collar 25, the connection stability with the hose sleeve 8 is increased. Through the setting of the second extension piece 17 and the first extension piece 7, the contact area with the first steel member 1 and the second steel member 2 is increased, thereby increasing the use stability. Through the setting of the extension plate 14, the upper end of the steel support plate 4 is restricted to ensure the positions of the steel support plates 4, making the leveling more accurate. Through the setting of the reinforcement side plate 22, the force on the steel support plate 4 is made more uniform. Through the setting of the first reinforcing rib 15, it is used to increase the bearing strength of the bottom mounting frame 3 and ensure the use stability.

[0034] Example 3: According to Figures 1 - 8 As shown, on both sides of the middle part inside the bottom mounting frame 3, second reinforcing ribs 18 are fixedly connected. In the middle of both sides inside the bottom mounting frame 3, reinforcement sleeves 20 are fixedly connected. The inner threaded rod 13 passes through the reinforcement sleeve 20. Between the outer surface of the reinforcement sleeve 20 and the upper end inside the bottom mounting frame 3, fourth reinforcing ribs 30 are fixedly connected. On one side of the first steel member 1 and the second steel member 2, first side plates 10 are provided. On both sides of the middle part of one side of the first side plate 10, inner support ribs 23 are fixedly connected. The distance between the two inner support ribs 23 is equal to the width of the through hole 16. On one side of the inner support rib 23, a third reinforcing rib 24 is fixedly connected. The inner support rib 23 is inserted into the first steel member 1 and the second steel member 2. On the other side of the first steel member 1 and the second steel member 2, second side plates 21 are provided. On both sides of the middle part of one side of the second side plate 21, insertion plates 28 are fixedly connected. The insertion plate 28 is inserted into the end of the inner support rib 23. Through holes 29 are provided on both sides of the middle part of the first side plate 10 and the second side plate 21. A second bolt 11 is installed between the two through holes 29.

[0035] In the present invention, through the setting of the reinforcement sleeve 20, the connection area between the inner threaded rod 13 and the bottom mounting frame 3 is increased to ensure the connection strength of the inner threaded rod 13. Through the setting of the fourth reinforcing rib 30, the stability is further increased, which can ensure that the steel support plate 4 does not shift during use and ensure the use stability. Through the setting of the inner support rib 23 and the third reinforcing rib 24, the installation is carried out in an inserted manner, which can improve the strength of the first steel member 1 and the second steel member 2, avoid depression due to excessive pressure, and at the same time can guide the first bolt 5 to avoid scraping of the thread of the first bolt 5 against the edge of the through hole 16, making the installation smoother and convenient for installation and use.

[0036] Usage method and working principle of this device: When in use, align the limiting card hole 26 with the limiting card block 19, and insert the limiting card block 19 into the limiting card hole 26 until the upper end of the profiled steel support plate 4 contacts the extension plate 14. Then rotate the second nut 12 to make the reinforcement side plate 22 press against the profiled steel support plate 4 to fix the profiled steel support plate 4. Subsequently, insert the hose sleeve 8 into the hole of the laminated plate precast component, place the second profiled steel member 2 under two laminated plate precast components, align the through hole 16 with the hose sleeve 8, insert the first bolt 5 through the through hole 16 and through the hose sleeve 8. At the same time, connect the connecting collar 25 with the hose sleeve 8, pass the upper end of the first bolt 5 through the through hole 16 in the first profiled steel member 1, and use the first nut 6 to connect with the first bolt 5 for fastening, so that the profiled steel support plate 4 gradually moves downward and contacts the reinforcing rib of the laminated plate precast component. As the rotation continues, gradually adjust the positions of the two laminated plate precast components for leveling. Subsequently, pour concrete into the precast component. After the concrete solidifies, a self-supporting and closely assembled laminated plate is formed.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A leveling device for a non-supporting closely assembled laminated plate, characterized in that: It includes a first steel member (1) and a second steel member (2). Through holes (16) are penetrated and opened inside both the first steel member (1) and the second steel member (2). A first bolt (5) is arranged inside the through hole (16). A first nut (6) is arranged above the first steel member (1). The first nut (6) is threadedly connected to the first bolt (5). A hose sleeve (8) is sleeved outside the first bolt (5). A rubber pad (9) is arranged at the lower end of the second steel member (2) and at the lower end of the hose sleeve (8). The rubber pad (9) is sleeved on the first bolt (5). On both sides of the middle of the lower end of the first steel member (1), bottom mounting frames (3) are fixedly connected. An internal threaded rod (13) is fixedly connected inside the bottom mounting frame (3). On both ends of the bottom mounting frame (3) and on both sides of the internal threaded rod (13), limiting blocks (19) are fixedly connected. Steel member support plates (4) are arranged at both ends of the bottom mounting frame (3). A fastening notch (27) is opened in the middle of the upper end of the steel member support plate (4). Limiting holes (26) are opened on both sides of the middle of the upper end of the steel member support plate (4). The limiting holes (26) are clamped with the limiting blocks (19). Second nuts (12) are threadedly connected to both ends of the internal threaded rod (13).

2. The leveling device for the self-supporting and closely assembled laminated plates according to claim 1, wherein: A connecting collar (25) is fixedly connected to the upper end of the rubber pad (9). The connecting collar (25) is inserted into the hose sleeve (8). An interference fit exists between the connecting collar (25) and the hose sleeve (8).

3. The leveling device for the self-supporting and closely assembled laminated plates according to claim 1, characterized in that: A second extension piece (17) is fixedly connected to the upper end of the hexagonal block of the first bolt (5). A first extension piece (7) is fixedly connected to the lower end of the first nut (6).

4. The leveling device for the self-supporting and closely-fitted laminated plates according to claim 1, wherein: Extension plates (14) are fixedly connected to the upper ends of both sides of the bottom mounting frame (3). A first reinforcing rib (15) is fixedly connected between the upper end of the extension plate (14) and the side surface of the first steel member (1).

5. The leveling device for the self-supporting and closely assembled laminated board according to claim 1, characterized in that: A reinforcing side plate (22) is arranged above the middle of one side of the steel member support plate (4). The reinforcing side plate (22) is inserted into the end of the internal threaded rod (13).

6. The leveling device for the self-supporting and closely assembled laminated plates according to claim 1, wherein: Second reinforcing ribs (18) are fixedly connected to both sides of the middle inside the bottom mounting frame (3). Reinforcing sleeves (20) are fixedly connected to the middle of both sides inside the bottom mounting frame (3). The internal threaded rod (13) passes through the reinforcing sleeve (20). A fourth reinforcing rib (30) is fixedly connected between the outer surface of the reinforcing sleeve (20) and the upper end inside the bottom mounting frame (3).

7. The leveling device for the self-supporting and closely assembled laminated plates according to claim 1, characterized in that: First side plates (10) are arranged on one side of both the first steel member (1) and the second steel member (2). Internal bracing ribs (23) are fixedly connected to both sides of the middle of one side of the first side plate (10). The distance between the two internal bracing ribs (23) is equal to the width of the through hole (16).

8. The leveling device for the self-supporting and closely assembled laminated plates according to claim 7, characterized in that: A third reinforcing rib (24) is fixedly connected to one side of the internal bracing rib (23). The internal bracing rib (23) is inserted into the first steel member (1) and the second steel member (2).

9. The leveling device for the self-supporting and closely assembled laminated plates according to claim 8, wherein: Second side plates (21) are arranged on the other side of both the first steel member (1) and the second steel member (2). Insertion plates (28) are fixedly connected to both sides of the middle of one side of the second side plate (21). The insertion plates (28) are inserted into the ends of the internal bracing ribs (23).

10. The leveling device for the self-supporting and closely assembled laminated plates according to claim 9, wherein: Through holes (29) are provided on both sides of the middle parts of the first side plate (10) and the second side plate (21), and a second bolt (11) is installed between the two through holes (29).

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