Lightweight concrete slab with built-in multi-cavity H-shaped steel and manufacturing process of lightweight concrete slab

Abstract

The invention belongs to the technical field of building structure materials, and particularly relates to a lightweight concrete plate with built-in multi-cavity H-shaped steel and a manufacturing process thereof.The concrete plate comprises end plates, the H-shaped steel, a lower steel bar frame, an upper steel bar frame, weight reduction cavities and a lightweight concrete base body; according to the invention, the framework formed by connecting the H-shaped steel and the end plates is used as a basis, and the concrete plate which is obtained by arranging a plurality of weight reduction cavities in the framework and pouring a light concrete material not only retains the high-strength characteristic of the H-shaped steel, but also obtains the characteristic of light weight; therefore, the weight of the building main body is reduced while the building strength is ensured, and the unification of light weight and high strength is realized. And the upper steel bar frame and the lower steel bar frame are arranged above and below the H-shaped steel respectively, so that the lightweight concrete base body and the H-shaped steel are connected more tightly through the upper steel bar frame and the lower steel bar frame, and meanwhile, the strength of the whole concrete plate is also improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of building structure materials, and particularly relates to a lightweight concrete plate with built-in multi-cavity H-shaped steel and a manufacturing process thereof. BACKGROUND

[0002] The steel reinforced concrete structure is an independent structure type in which a steel is embedded in concrete. The steel reinforced concrete structure has the advantages of large bearing capacity, large rigidity and good anti-seismic performance compared with the traditional concrete structure due to the increase of the steel in the concrete. Compared with the steel structure, the steel reinforced concrete structure has the advantages of good fireproof performance, good local and overall stability of the structure, and saving of steel.

[0003] The steel reinforced concrete component in the prior art mainly adopts hot-rolled H-shaped steel as a concrete component framework. However, the hot-rolled H-shaped steel cannot be well bonded with the concrete, thereby affecting the strength of the building, and the existing steel reinforced concrete component has large overall weight, and a large number of connecting points are connected by welding or bolts, so that the labor cost is large and the construction cost is high. SUMMARY

[0004] In order to make up for the deficiencies of the prior art, the application provides a lightweight concrete plate with built-in multi-cavity H-shaped steel and a manufacturing process thereof. The application is mainly used to solve the problems that the hot-rolled H-shaped steel in the existing steel reinforced concrete component cannot be well bonded with the concrete, thereby affecting the strength of the building, and the existing steel reinforced concrete component has large overall weight, and a large number of connecting points are connected by welding or bolts, so that the labor cost is large and the construction cost is high.

[0005] The application solves the technical problems by adopting the technical scheme that the application provides a lightweight concrete plate with built-in multi-cavity H-shaped steel, which comprises end plates, H-shaped steels, lower steel bar frames, upper steel bar frames, weight reduction cavities and a lightweight concrete base body. A plurality of H-shaped steels are uniformly and symmetrically arranged between two end plates arranged side by side. The two ends of the H-shaped steel are fixedly connected to one end plate. The web of the H-shaped steel is arranged in a vertical direction. The lower steel bar frame and the upper steel bar frame are arranged below and above the H-shaped steel respectively. The lower steel bar frame and the upper steel bar frame are connected to the H-shaped steel. A plurality of weight reduction cavities are uniformly and symmetrically arranged between the upper steel bar frame and the lower steel bar frame. The two ends of the weight reduction cavity are connected to the lower steel bar frame and the upper steel bar frame respectively. The weight reduction cavity is a hollow structure. The upper steel bar frame, the lower steel bar frame and the end plate are wrapped in the lightweight concrete base body by pouring. The hoisting structure arranged at the two ends of the end plate is exposed outside the lightweight concrete base body.

[0006] The skeleton formed by the H-shaped steel and the end plate is used as the basis, and the concrete plate material obtained by internally arranging a plurality of weight reduction cavities and pouring lightweight concrete material not only retains the high strength characteristics of the H-shaped steel, but also has the characteristics of lightweight, thereby realizing the unification of lightweight and high strength while ensuring the strength of the building and reducing the weight of the building body. Furthermore, by arranging the upper steel bar frame and the lower steel bar frame above and below the H-shaped steel, the lightweight concrete base and the H-shaped steel are connected more closely through the upper steel bar frame and the lower steel bar frame, and the strength of the whole concrete plate material is improved. The lightweight concrete base includes ceramsite, foaming agent and steel fiber, and the density is 800-1200 kg / m³, wherein the steel fiber content is 1.5%-1.8%, thereby enhancing the crack resistance.

[0007] Preferably, the web of the H-shaped steel is uniformly and spacedly provided with through holes; a plurality of the through holes are provided with a waist-shaped groove; the waist-shaped groove is provided with a connecting rod; the connecting rod is provided with a plurality of groups of symmetrically arranged clamping rings; the side edge of the clamping ring on the side close to each other is provided with a chamfer; the diameter of the clamping ring is smaller than the diameter of the through hole; and the clamping ring is fixedly connected to the connecting rod.

[0008] During installation, the connecting rod is first inserted into the through hole of the H-shaped steel, and then sequentially penetrates all the H-shaped steels, and then each group of clamping rings is arranged on the web of one H-shaped steel and the connecting rod is pushed into the waist-shaped groove by impact or extrusion, so that the two symmetrically arranged clamping rings are clamped on both sides of the web of the H-shaped steel, thereby realizing the connection of all the H-shaped steels into a whole by the connecting rod, not only making the skeleton formed by the H-shaped steel and the end plate stronger, but also making the connection between the lightweight concrete base and the H-shaped steel stronger, thereby improving the strength of the whole concrete plate material. Moreover, the connection by clamping not only improves the connection efficiency, but also avoids the problem of rusting near the welding point after welding, thereby improving the service life of the concrete plate material.

[0009] Preferably, the flange of the H-shaped steel is uniformly and spacedly provided with an air vent near the web.

[0010] During the pouring of the lightweight concrete base, the H-shaped steel is horizontally placed, so that the lightweight concrete base cannot completely drive away the air at the intersection of the upper end flange and the web of the H-shaped steel, and the air that cannot be driven away can be discharged from the vertical air vent on the flange, thereby reducing the formation of air bubbles, improving the adhesion strength between the lightweight concrete base and the H-shaped steel, and improving the strength of the concrete plate material.

[0011] Preferably, the lower steel bar frame and the upper steel bar frame are symmetrical structures; the lower steel bar frame comprises longitudinal rods and transverse rods which are longitudinally and transversely staggered; the longitudinal rods are fixedly connected with limiting columns, buckle members and support columns; the limiting columns are arranged on the longitudinal rods close to one side of the H-shaped steel; the buckle members are symmetrically arranged on the longitudinal rods close to one side of the H-shaped steel; the distance between the buckle ends of the two buckle members is smaller than the flange width of the H-shaped steel; the buckle ends of the buckle members are provided with inclined guide structures; and the support columns are arranged on the longitudinal rods away from one side of the H-shaped steel.

[0012] Before pouring the lightweight concrete base, the lower steel bar frame is placed in the formed lower mold, and the pre-assembled H-shaped steel and end plate are hoisted and placed on the lower steel bar frame; during the placement, the lower flange of the H-shaped steel extrudes the inclined guide structures of the symmetrically arranged buckle members by relying on the self-weight of the H-shaped steel, and then the H-shaped steel passes through the inclined guide structures and enters the buckle ends of the buckle members between the limiting columns after the deformation of the buckle members, thereby realizing the automatic connection of the H-shaped steel and the lower steel bar frame; then the upper steel bar frame is placed on the H-shaped steel, and an impact tool or an extrusion device is used to extrude the upper steel bar frame downward, thereby clamping the buckle members and the limiting columns of the upper steel bar frame on the flanges of the H-shaped steel, thereby realizing the connection of the H-shaped steel and the upper steel bar frame; the automatic connection of the lower steel bar frame and the upper steel bar frame with the H-shaped steel is realized through clamping, which is more efficient than traditional welding methods, and the connection part is less prone to rust in the later period, thereby improving the service life of the concrete slab. The support columns can ensure that the framework formed by the lower steel bar frame, the H-shaped steel and the upper steel bar frame is arranged inside the concrete slab, thereby ensuring that the framework can effectively improve the structural strength of the concrete slab.

[0013] Preferably, auxiliary vibration frames are symmetrically arranged on both sides of the H-shaped steel; the auxiliary vibration frame comprises a rotating rod and a vibration rod; the vibration rods are fixedly connected to the rotating rod at uniform intervals after being bent; the free ends of the vibration rods can swing to the middle part of the web of the H-shaped steel; and the rotating rod is hinged to the lower steel bar frame.

[0014] Before pouring the lightweight concrete base, the lower steel bar frame is placed in the formed lower mold, at this time the auxiliary vibration frame is turned to the direction away from the buckle member, and then the pre-assembled H-shaped steel and end plate are hoisted and placed on the lower steel bar frame; after the H-shaped steel is connected with the lower steel bar frame, the auxiliary vibration frame is manually turned over so that the free ends of the vibration rods abut against the web of the H-shaped steel, thereby in the subsequent process of pouring the lightweight concrete base, the concrete vibrator can be contacted with the auxiliary vibration frame, and the vibration can be transmitted to the surrounding of the web of the H-shaped steel through the auxiliary vibration frame, thereby better realizing the vibration and tamping of the lightweight concrete base around the H-shaped steel, thereby improving the connection strength of the H-shaped steel and the lightweight concrete base, and thereby improving the overall strength of the concrete slab.

[0015] Preferably, the weight-reducing cavity is a cylindrical structure with both ends stretched inward into a conical shape; the weight-reducing cavity is vertically placed between the upper and lower steel bar racks, and the vertically arranged insertion columns on the upper and lower steel bar racks are respectively inserted into the upper and lower ends of the weight-reducing cavity.

[0016] By stretching both ends of the weight-reducing cavity inward into a conical shape and connecting them through the insertion columns, the lower end of the weight-reducing cavity is inserted into the insertion column on the lower steel bar rack after the pre-assembled H-shaped steel and end plate are hoisted and placed on the lower steel bar rack, and then the insertion column on the upper steel bar rack is automatically inserted into the upper end of the weight-reducing cavity when the upper steel bar rack is placed on the H-shaped steel, thereby achieving quick connection of the weight-reducing cavity with the upper and lower steel bar racks through insertion, thereby improving production efficiency; moreover, stretching both ends of the weight-reducing cavity inward into a conical shape not only plays a guiding role when the insertion columns are inserted, but also forms an anti-disengagement structure between the weight-reducing cavity and the lightweight concrete matrix after the lightweight concrete matrix is cast and formed, thereby improving the connection strength of the weight-reducing cavity and the lightweight concrete matrix.

[0017] Preferably, the weight-reducing cavity is filled with thermal insulation material, and the insertion holes at both ends of the weight-reducing cavity are penetrated after filling is completed.

[0018] The thermal insulation material is polyurethane foam for improving sound insulation performance; by penetrating the insertion holes at both ends of the weight-reducing cavity, the lightweight concrete matrix flows into the inverted conical structure at the lower end of the weight-reducing cavity when the lightweight concrete matrix is cast in the lower mold, and the insertion holes are well vented after penetration, thereby enabling the inverted conical structure at the lower end of the weight-reducing cavity to be filled with lightweight concrete matrix, thereby improving the connection strength of the weight-reducing cavity and the lightweight concrete matrix.

[0019] Preferably, a corrugated reinforcing rod is arranged on the outer side of the end plate; the wave crests of the reinforcing rod are fixedly connected to the outer side of the end plate; and the planes where the wave crests and wave troughs of the reinforcing rod are located are perpendicular to the outer side of the end plate.

[0020] By arranging a corrugated reinforcing rod on the outer side of the end plate, the reinforcing rod can improve the connection strength of the lightweight concrete matrix and the outer side of the end plate after the lightweight concrete matrix is cast, thereby preventing the two from disengaging and improving the overall structural strength of the concrete slab.

[0021] Preferably, the process of fixedly connecting the reinforcing rod to the end plate is as follows:

[0022] N1: heating the to-be-stamped points on the end plate by a heating component;

[0023] N2: the end plate is forwarded by the forwarding component, so that the heated stamping point moves to the stamping station, and the unreeling component of the reinforcing rod forwards the reinforcing rod along the moving direction of the end plate by a length, and the length is 1.5-2 times of the distance between adjacent stamping points on the end plate; the length of the reinforcing rod forwarded by the unreeling component of the reinforcing rod is 1.5-2 times of the distance between adjacent stamping points on the end plate, and the extra length makes the reinforcing rod bent into a corrugated shape, thereby reducing the bending process and improving the production efficiency;

[0024] N3: the forming punch below the stamping station extrudes the reinforcing rod against the outer side of the end plate, and in the process, the reinforcing rod is clamped into the avoidance slot of the forming punch;

[0025] N4: the stamping head above the stamping station extrudes the heated stamping point material on the end plate downward into the forming cavity of the forming punch, and then the stamping point material wraps the wave crest of the reinforcing rod in the forming cavity;

[0026] N5: the stamping head above the stamping station is withdrawn backward, and then the forming punch below the stamping station is withdrawn backward, and the steps of N2-N4 are repeated;

[0027] Through the above steps, the wave crest of the reinforcing rod can be continuously connected with the end plate, thereby realizing automatic batch automatic production, and through the hot melting forming welding method, subsequent slag cleaning steps are not required, which not only improves the processing effect, but also ensures that the welding point will not rust in the later period.

[0028] A manufacturing process of a lightweight concrete slab with built-in multi-cavity H-shaped steel, which comprises the following steps:

[0029] S1: first, place the lower reinforcement frame in the formed lower mold, and insert the lower end of the support column on the lower reinforcement frame into the positioning hole on the lower mold;

[0030] S2: sequentially pass the connecting rod through all the H-shaped steels from the through hole of the H-shaped steel, then push the connecting rod into the waist-shaped groove by impact or extrusion for each group of clamping rings on the web of the H-shaped steel, so that the two symmetrically arranged clamping rings are clamped on both sides of the web of the H-shaped steel, thereby obtaining a skeleton prefabricated part;

[0031] S3: the obtained skeleton prefabricated part is hoisted and placed on the lower reinforcement frame, and during placement, the lower flange of the H-shaped steel extrudes the inclined guide structure of the symmetrically arranged clamping members, and then the lower flange of the H-shaped steel passes through the inclined guide structure into the clamping end of the clamping member between the clamping end and the limiting column after the clamping member is deformed;

[0032] S4: Turn the auxiliary vibration frame to the suspended end of the vibration rod and make it abut against the web of the H-shaped steel;

[0033] S5: Insert the lower end of the weight-reducing cavity into the insertion column on the lower steel reinforcement frame;

[0034] S6: Pour the lightweight concrete matrix into the lower mold until the lightweight concrete matrix in the lower mold reaches the middle part of the web of the H-shaped steel, and then tamping the lightweight concrete matrix by the concrete vibrating rod, and transmitting the vibration to the surrounding of the H-shaped steel by the auxiliary vibration frame;

[0035] S7: Hoist the upper steel reinforcement frame to the H-shaped steel, and then extrude the upper steel reinforcement frame downward by using the impact tool or the extrusion device, so as to clamp the buckle and the limiting column on the upper steel reinforcement frame on the flange of the H-shaped steel;

[0036] S8: Pour the lightweight concrete matrix into the lower mold again until the lightweight concrete matrix in the lower mold reaches the upper end surface of the supporting column on the upper steel reinforcement frame, and then tamping the lightweight concrete matrix by the concrete vibrating rod;

[0037] S9: Perform maintenance on the poured lightweight concrete matrix, and the maintenance is performed by using 80-90 DEG C steam curing for 6-10 hours.

[0038] The beneficial effects of the present application are as follows:

[0039] 1. The present application is based on the framework formed by the H-shaped steel and the end plate, and the concrete plate obtained by setting multiple weight-reducing cavities inside and pouring lightweight concrete material, which not only retains the high strength characteristics of the H-shaped steel, but also obtains the lightweight characteristics, thereby realizing the unification of lightweight and high strength while ensuring the strength of the building, and further realizing the unification of lightweight and high strength. Moreover, by arranging the upper steel reinforcement frame and the lower steel reinforcement frame above and below the H-shaped steel, the lightweight concrete matrix is connected more closely to the H-shaped steel through the upper steel reinforcement frame and the lower steel reinforcement frame, and the strength of the whole concrete plate is also improved.

[0040] The lower reinforcement frame is placed in the formed lower mold, and the preassembled parts of the H-shaped steel and the end plate are hoisted and placed on the lower reinforcement frame. During placement, the lower flange of the H-shaped steel squeezes the oblique guide structure of the symmetrically arranged clip by relying on the dead weight of the H-shaped steel. Then, after the clip is deformed, the lower flange of the H-shaped steel passes through the oblique guide structure and enters between the clip end portion of the clip and the limit column, thereby realizing automatic connection between the H-shaped steel and the lower reinforcement frame; then, the upper reinforcement frame is placed on the H-shaped steel, and an impact tool or an extrusion device is used to squeeze the upper reinforcement frame downward, thereby clamping the clips and the limit column on the upper reinforcement frame to the flange of the H-shaped steel, thereby realizing the connection between the H-shaped steel and the upper reinforcement frame; the automatic connection between the lower reinforcement frame and the upper reinforcement frame and the H-shaped steel is realized by clamping, which has a high connection efficiency compared with traditional welding and the like, and is less likely to rust at the connection point in the later stage, thereby improving the service life of the concrete slab.

[0041] 3. In the present invention, after the H-shaped steel is connected to the lower steel bar frame, the auxiliary vibration frame is manually flipped over until the suspended end of the vibration rod is in contact with the web of the H-shaped steel. Then, in the subsequent pouring process of the lightweight concrete matrix, the concrete vibration rod can be brought into contact with the auxiliary vibration frame, and the vibration can be transmitted to the vicinity of the web of the H-shaped steel through the auxiliary vibration frame, thereby better achieving vibration compaction of the lightweight concrete matrix around the H-shaped steel, thereby improving the connection strength between the H-shaped steel and the lightweight concrete matrix, and thereby improving the overall strength of the concrete slab. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention will be further described below with reference to the accompanying drawings.

[0043] Figure 1 It is a schematic diagram of the overall structure of the concrete slab of the present invention;

[0044] Figure 2 This is a schematic diagram of the overall structure of the internal skeleton of the concrete slab of the present invention;

[0045] Figure 3 is a top view of the internal skeleton of the concrete slab of the present invention;

[0046] Figure 4 yes Figure 3 Full cross-sectional view at AA in the middle;

[0047] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle;

[0048] Figure 6 is a schematic diagram of the partial structure of the internal skeleton of the concrete slab of the present invention at a first viewing angle;

[0049] Figure 7is a local structure schematic diagram of the internal framework of the concrete slab of the present application in the second perspective view;

[0050] Figure 8 is a structure schematic diagram of the lower steel bar frame in the present application;

[0051] Figure 9 is a structure schematic diagram of the H-shaped steel in the present application;

[0052] Figure 10 is a structure schematic diagram of the auxiliary vibration frame in the present application;

[0053] Figure 11 is a process step schematic diagram of the fixed connection of the reinforcing rod and the end plate in the present application;

[0054] In the figure: end plate 1, reinforcing rod 11, H-shaped steel 2, through hole 21, waist-shaped groove 22, connecting rod 23, clasp ring 24, exhaust hole 25, lower steel bar frame 3, longitudinal rod 31, transverse rod 32, limiting column 33, buckle piece 34, support column 35, auxiliary vibration frame 36, rotating rod 361, vibration rod 362, plug-in column 37, upper steel bar frame 4, weight-reducing cavity 5, lightweight concrete matrix 6. DETAILED DESCRIPTION

[0055] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0056] As shown in Figures 1 to 7 A lightweight concrete slab with built-in multi-cavity H-shaped steel, comprising an end plate 1, an H-shaped steel 2, a lower steel bar frame 3, an upper steel bar frame 4, a weight-reducing cavity 5, and a lightweight concrete matrix 6; a plurality of H-shaped steels 2 are uniformly and symmetrically arranged between two end plates 1 arranged side by side; the two ends of the H-shaped steel 2 are fixedly connected to an end plate 1, respectively; the web of the H-shaped steel 2 is arranged in the vertical direction; the lower and upper parts of the H-shaped steel 2 are provided with the lower steel bar frame 3 and the upper steel bar frame 4, respectively; the lower steel bar frame 3 and the upper steel bar frame 4 are connected to the H-shaped steel 2; a plurality of weight-reducing cavities 5 are uniformly and symmetrically arranged between the upper steel bar frame 4 and the lower steel bar frame 3; the two ends of the weight-reducing cavity 5 are connected to the lower steel bar frame 3 and the upper steel bar frame 4, respectively; the weight-reducing cavity 5 is a hollow structure; the upper steel bar frame 4, the lower steel bar frame 3, and the end plate 1 are all wrapped in the lightweight concrete matrix 6 by pouring; the hoisting structure arranged at the two ends of the end plate 1 is exposed outside the lightweight concrete matrix 6.

[0057] The skeleton formed by connecting the H-shaped steel 2 and the end plate 1 is based, and the concrete plate material obtained by internally arranging a plurality of weight reduction cavities 5 and pouring lightweight concrete material not only retains the high strength characteristic of the H-shaped steel 2, but also obtains the lightweight characteristic, thereby realizing the unification of lightweight and high strength while ensuring the strength of the building and reducing the weight of the building body. Moreover, by arranging the upper steel bar frame 4 and the lower steel bar frame 3 above and below the H-shaped steel 2, respectively, and then connecting the lightweight concrete base body 6 and the H-shaped steel 2 more closely through the upper steel bar frame 4 and the lower steel bar frame 3, the strength of the whole concrete plate material is improved. The lightweight concrete base body 6 includes ceramsite, foaming agent and steel fiber, and the density is 800-1200 kg / m³, wherein the steel fiber content is 1.5%-1.8%, thereby enhancing the crack resistance.

[0058] As shown in Figures 4 to 7 and Figure 9 , the web of the H-shaped steel 2 is uniformly and spacedly provided with through holes 21; a plurality of the through holes 21 are provided with waist-shaped grooves 22; the waist-shaped grooves 22 are provided with connecting rods 23; the connecting rods 23 are provided with a plurality of groups of symmetrically arranged clamping rings 24; the side edges of the clamping rings 24 close to each other are provided with chamfers; the diameter of the clamping ring 24 is smaller than the diameter of the through hole 21; and the clamping ring 24 is fixedly connected to the connecting rod 23.

[0059] During installation, the connecting rod 23 is first inserted into the through hole 21 of the H-shaped steel 2, and then sequentially penetrates all the H-shaped steels 2, and then each group of clamping rings 24 is arranged on the web of one H-shaped steel 2 and the connecting rod 23 is pushed into the waist-shaped groove 22 by impact or extrusion, so that the two symmetrically arranged clamping rings 24 are clamped on both sides of the web of the H-shaped steel 2, thereby realizing the connection of all the H-shaped steels 2 into a whole by the connecting rod 23, not only making the skeleton formed by the H-shaped steel 2 and the end plate 1 stronger, but also making the connection between the lightweight concrete base body 6 and the H-shaped steel 2 stronger, thereby improving the strength of the whole concrete plate material. Moreover, the connection by clamping not only improves the connection efficiency, but also avoids the problem of rusting near the welding points after welding, thereby improving the service life of the concrete plate material.

[0060] As shown in Figures 4 to 7 , the flange of the H-shaped steel 2 is uniformly and spacedly provided with exhaust holes 25 near the web.

[0061] During the pouring process of the lightweight concrete matrix 6, since the H-shaped steel 2 is placed horizontally, the lightweight concrete matrix 6 cannot completely expel the air at the intersection of the upper flange and the web of the H-shaped steel 2. By setting vertical exhaust holes 25 on the flange here, the air that cannot be expelled can be discharged from the exhaust holes 25, thereby reducing the formation of bubbles, thereby improving the adhesion strength between the lightweight concrete matrix 6 and the H-shaped steel 2, and also improving the strength of the concrete slab.

[0062] like Figures 6 to 8 As shown, the lower reinforcement frame 3 and the upper reinforcement frame 4 are symmetrical structures; the lower reinforcement frame 3 includes longitudinal rods 31 and transverse rods 32 that are crisscrossed with each other; the longitudinal rods 31 are fixedly connected to limit columns 33, clips 34 and support columns 35; the limit columns 33 are arranged on the side of the longitudinal rod 31 close to the H-shaped steel 2; the clips 34 are symmetrically arranged on the side of the longitudinal rod 31 close to the H-shaped steel 2; the distance between the clip ends of the two clips 34 is less than the flange width of the H-shaped steel 2; the clip ends of the clips 34 are provided with an oblique guide structure; the support column 35 is arranged on the side of the longitudinal rod 31 away from the H-shaped steel 2.

[0063] Before pouring the lightweight concrete matrix 6, the lower reinforcement frame 3 is first placed in the formed lower mold, and then the pre-assembled parts of the H-shaped steel 2 and the end plate 1 are hoisted and placed on the lower reinforcement frame 3. When placing, relying on the dead weight of the H-shaped steel 2, the lower flange of the H-shaped steel 2 squeezes the oblique guide structure of the symmetrically arranged clips 34, and then after the clips 34 are deformed, the lower flange of the H-shaped steel 2 passes through the oblique guide structure and enters between the clip end of the clip 34 and the limit column 33, thereby realizing the automatic connection between the H-shaped steel 2 and the lower reinforcement frame 3; then The upper reinforcement frame 4 is placed on the H-shaped steel 2, and then an impact tool or an extrusion device is used to press the upper reinforcement frame 4 downward, thereby clamping the upper clamping member 34 and the limiting column 33 of the upper reinforcement frame 4 to the flange of the H-shaped steel 2, thereby achieving the connection between the H-shaped steel 2 and the upper reinforcement frame 4; the clamping method realizes the automatic connection between the lower reinforcement frame 3 and the upper reinforcement frame 4 and the H-shaped steel 2. Compared with traditional welding methods, not only is the connection efficiency high, but the connection is also less likely to rust in the later stage, thereby improving the service life of the concrete slab. The support column 35 can ensure that the skeleton formed by the lower reinforcement frame 3, the H-shaped steel 2 and the upper reinforcement frame 4 is set inside the concrete slab, thereby ensuring that the skeleton can effectively improve the structural strength of the concrete slab.

[0064] like Figures 5 to 7 and Figure 10As shown, the H-shaped steel 2 is symmetrically arranged with auxiliary vibration frame 36 on both sides; the auxiliary vibration frame 36 includes rotating rod 361 and vibration rod 362; the vibration rod 362 is uniformly and spacedly fixedly connected to the rotating rod 361 after being bent; the overhanging end of the vibration rod 362 can swing to the middle of the web of the H-shaped steel 2; the rotating rod 361 is hinged to the lower reinforcement frame 3.

[0065] Before pouring the lightweight concrete base 6, the lower reinforcement frame 3 is placed in the formed lower mold, at this time the auxiliary vibration frame 36 is turned to the direction away from the buckle 34, then the pre-assembled piece of the H-shaped steel 2 and the end plate 1 is hoisted and placed on the lower reinforcement frame 3, after the H-shaped steel 2 is connected with the lower reinforcement frame 3, the auxiliary vibration frame 36 is manually turned over so that the overhanging end of the vibration rod 362 abuts against the web of the H-shaped steel 2, and then in the subsequent process of pouring the lightweight concrete base 6, the concrete vibrator can be contacted with the auxiliary vibration frame 36, and then the vibration is transmitted to the web of the H-shaped steel 2 through the auxiliary vibration frame 36, so that the lightweight concrete base 6 around the H-shaped steel 2 is better vibrated and tamped, and the connection strength of the H-shaped steel 2 and the lightweight concrete base 6 is improved, and the overall strength of the concrete slab is improved.

[0066] As shown in Figures 5 to 7 The weight-reducing cavity 5 is a cylindrical structure with both ends stretched inwardly into a conical shape; the weight-reducing cavity 5 is vertically placed between the upper reinforcement frame 4 and the lower reinforcement frame 3, and the vertically arranged insertion columns 37 on the upper reinforcement frame 4 and the lower reinforcement frame 3 are respectively inserted from the upper and lower ends of the weight-reducing cavity 5.

[0067] By stretching both ends of the weight-reducing cavity 5 inwardly into a conical shape, and connecting by inserting the insertion columns 37 at both ends, after hoisting and placing the pre-assembled piece of the H-shaped steel 2 and the end plate 1 on the lower reinforcement frame 3, the lower end of the weight-reducing cavity 5 is inserted on the insertion column 37 on the lower reinforcement frame 3, and then when the upper reinforcement frame 4 is placed on the H-shaped steel 2, the insertion column 37 on the upper reinforcement frame 4 is automatically inserted in the upper end of the weight-reducing cavity 5, so that the weight-reducing cavity 5 can be quickly connected with the upper reinforcement frame 4 and the lower reinforcement frame 3 by inserting, thereby improving the production efficiency; moreover, stretching both ends of the weight-reducing cavity 5 inwardly into a conical shape not only plays a guiding role when inserting the insertion columns 37, but also forms an anti-disengagement structure between the weight-reducing cavity 5 and the lightweight concrete base 6 after the lightweight concrete base 6 is poured and formed, because the lightweight concrete base 6 is formed and solidified in the inverted conical structures at both ends of the weight-reducing cavity 5, thereby improving the connection strength of the weight-reducing cavity 5 and the lightweight concrete base 6.

[0068] As shown in Figures 4 to 5 The weight-reducing cavity 5 is filled with thermal insulation material, and the insertion holes at both ends of the weight-reducing cavity 5 are penetrated after filling is completed.

[0069] The heat insulation material is polyurethane foam, which is used to improve the sound insulation performance; by penetrating the plug-in hole at both ends of the weight reduction cavity 5, when pouring the lightweight concrete base 6 into the downward mold, the lightweight concrete base 6 flows into the inverted cone structure at the lower end of the weight reduction cavity 5, and since the plug-in hole is penetrated, it can be well vented, so that the inverted cone structure at the lower end of the weight reduction cavity 5 can be filled with lightweight concrete base 6, thereby improving the connection strength of the weight reduction cavity 5 and the lightweight concrete base 6.

[0070] As shown in Figures 6 to 7 , the outer side of the end plate 1 is provided with a corrugated reinforcing rod 11; the wave crest of the reinforcing rod 11 is fixedly connected to the outer side of the end plate 1; the plane where the wave crest and the wave trough of the reinforcing rod 11 are located is perpendicular to the outer side of the end plate 1.

[0071] By providing a corrugated reinforcing rod 11 on the outer side of the end plate 1, the reinforcing rod 11 can improve the connection strength of the lightweight concrete base 6 and the outer side of the end plate 1 after pouring the lightweight concrete base 6, thereby preventing the two from separating, thereby improving the overall structural strength of the concrete slab.

[0072] As shown in Figure 11 , the process of fixing the reinforcing rod 11 to the end plate 1 is as follows:

[0073] N1: Heat the to-be-punched point on the end plate 1 by heating component;

[0074] N2: The end plate 1 is forwarded by the conveying component, so that the heated to-be-punched point moves to the punching station, and at the same time, the unreeling component of the reinforcing rod 11 conveys the reinforcing rod 11 along the moving direction of the end plate 1 by a length, and the conveying length is 1.5-2 times the distance between adjacent punching points on the end plate 1; by controlling the unreeling component of the reinforcing rod 11 to convey the reinforcing rod 11 by a length of 1.5-2 times the distance between adjacent punching points on the end plate 1, the extra length makes the reinforcing rod 11 bent into a corrugated shape, thereby reducing the bending process and improving the production efficiency;

[0075] N3: The forming punch below the punching station extrudes and abuts the reinforcing rod 11 on the outer side of the end plate 1, and in the process, the reinforcing rod 11 is clamped into the avoidance slot of the forming punch;

[0076] N4: The punching head above the punching station extrudes the heated punching point material on the end plate 1 downward into the forming cavity of the forming punch, and the punching point material wraps the wave crest of the reinforcing rod 11 in the forming cavity;

[0077] N5: the punch head above the punching station is withdrawn backward, and then the forming punch below the punching station is withdrawn backward, and the steps of N2-N4 are repeated;

[0078] Through the above steps, the wave crest of the reinforcing rod 11 and the end plate 1 can be continuously connected, and automatic batch automatic production can be realized. Through the hot melt forming welding method, subsequent slag cleaning steps are not required, which not only improves the processing effect, but also ensures that the welding point will not rust in the later period.

[0079] As shown in Figures 1 to 10 A manufacturing process of a lightweight concrete plate with built-in multi-cavity H-shaped steel, the process includes the following steps:

[0080] S1: first place the lower reinforcement frame 3 in the formed lower mold, and insert the lower end of the support column 35 on the lower reinforcement frame 3 into the positioning hole on the lower mold;

[0081] S2: sequentially pass the connecting rod 23 through all the H-shaped steel 2 from the through hole 21 of the H-shaped steel 2, and then push the connecting rod 23 into the waist-shaped groove 22 by impact or extrusion for each group of clamping ring 24 on the web of one H-shaped steel 2, so that the two symmetrically arranged clamping rings 24 are clamped on both sides of the web of the H-shaped steel 2, and then the skeleton prefabricated part is obtained;

[0082] S3: the obtained skeleton prefabricated part is hoisted and placed on the lower reinforcement frame 3, and during placement, the lower flange of the H-shaped steel 2 extrudes the inclined guide structure of the symmetrically arranged clamping member 34, and then the lower flange of the H-shaped steel 2 passes through the inclined guide structure and enters between the clamping end of the clamping member 34 and the limiting column 33 after the clamping member 34 is deformed;

[0083] S4: turn over the auxiliary vibration frame 36 so that the suspended end of the vibration rod 362 abuts against the web of the H-shaped steel 2;

[0084] S5: insert the lower end of the weight-reducing cavity 5 into the insertion column 37 on the lower reinforcement frame 3;

[0085] S6: pour the lightweight concrete base 6 into the lower mold until the lightweight concrete base 6 in the lower mold reaches the middle part of the web of the H-shaped steel 2, and then vibrate the lightweight concrete base 6 by the concrete vibrator, and the vibration is transmitted to the surrounding of the H-shaped steel 2 by the auxiliary vibration frame 36 during the process;

[0086] S7: hoist the upper reinforcement frame 4 to the H-shaped steel 2, and then use an impact tool or an extrusion device to extrude the upper reinforcement frame 4 downward, so that the clamping member 34 and the limiting column 33 on the upper reinforcement frame 4 are clamped on the flange of the H-shaped steel 2;

[0087] S8: again pour the lightweight concrete matrix 6 into the lower mold until the lightweight concrete matrix 6 in the lower mold reaches the upper end surface of the support column 35 on the upper reinforcing frame 4, and in the process, the lightweight concrete matrix 6 is tamped by a concrete vibrator;

[0088] S7: curing the poured lightweight concrete matrix 6, and the curing is performed by steam curing at 80-90°C for 6-10 hours.

[0089] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are merely illustrative but not restrictive, and those of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, and these all belong to the protection of the present application.

Claims

1. A lightweight concrete panel with built-in multi-cavity H-shaped steel, characterized by: The invention comprises an end plate (1), an H-shaped steel (2), a lower steel bar frame (3), an upper steel bar frame (4), a weight-reducing cavity (5) and a lightweight concrete matrix (6); a plurality of H-shaped steels (2) are evenly spaced between two symmetrical and side-by-side end plates (1); the two ends of the H-shaped steel (2) are respectively fixedly connected to one end plate (1); the web of the H-shaped steel (2) is arranged in a vertical direction; the lower steel bar frame (3) and the upper steel bar frame (4) are respectively arranged below and above the H-shaped steel (2); the lower steel bar frame (3) and the upper steel bar frame (4) are both connected to the H-shaped steel (2); a plurality of weight-reducing cavities (5) are evenly spaced between the upper steel bar frame (4) and the lower steel bar frame (3); the two ends of the weight-reducing cavity (5) are respectively connected to the lower steel bar frame (3) and the upper steel bar frame (4); The interior of the weight-reducing cavity (5) is a hollow structure; the upper steel frame (4), the lower steel frame (3) and the end plate (1) are all wrapped in the lightweight concrete matrix (6) by pouring; and the hanging structures provided at both ends of the end plate (1) are exposed outside the lightweight concrete matrix (6).

2. The lightweight concrete panel with built-in multi-cavity H-shaped steel according to claim 1, characterized in that: Through holes (21) are evenly spaced on the web of the H-shaped steel (2); waist-shaped grooves (22) are provided on a plurality of the through holes (21); a connecting rod (23) is provided in the waist-shaped grooves (22); a plurality of groups of symmetrically arranged snap rings (24) are provided on the connecting rod (23); chamfers are provided on the edges of the snap rings (24) that are close to each other; the diameter of the snap rings (24) is smaller than the diameter of the through holes (21); and the snap rings (24) are fixedly connected to the connecting rod (23).

3. The lightweight concrete panel with built-in multi-cavity H-shaped steel according to claim 1, characterized in that: Vent holes (25) are evenly spaced apart on the flange of the H-shaped steel (2) near the web.

4. The lightweight concrete panel with built-in multi-cavity H-shaped steel according to claim 1, characterized in that: The lower reinforcement frame (3) and the upper reinforcement frame (4) are symmetrical structures; the lower reinforcement frame (3) comprises longitudinal bars (31) and transverse bars (32) that are interlaced with each other; a limiting column (33), a clip (34) and a support column (35) are fixedly connected to the longitudinal bar (31); the limiting column (33) is provided on the longitudinal bar (31) on the side close to the H-shaped steel (2); the clips (34) are symmetrically provided on the longitudinal bar (31) on the side close to the H-shaped steel (2); the distance between the clip ends of the two clips (34) is less than the flange width of the H-shaped steel (2); the clip ends of the clips (34) are provided with an oblique guide structure; and the support column (35) is provided on the longitudinal bar (31) on the side away from the H-shaped steel (2).

5. The lightweight concrete panel with built-in multi-cavity H-shaped steel according to claim 4, characterized in that: Auxiliary vibration frames (36) are symmetrically arranged on both sides of the H-shaped steel (2); the auxiliary vibration frames (36) include rotating rods (361) and vibration rods (362); the vibration rods (362) are evenly spaced and fixedly connected to the rotating rods (361) after being bent; the suspended ends of the vibration rods (362) can swing to the middle of the web of the H-shaped steel (2); and the rotating rods (361) are hinged to the lower steel bar frame (3).

6. The lightweight concrete panel with built-in multi-cavity H-shaped steel according to claim 1, characterized in that: The weight-reducing cavity (5) is a cylindrical structure with both ends stretched inward into a conical shape; the weight-reducing cavity (5) is vertically placed between the upper steel frame (4) and the lower steel frame (3), and the plug-in columns (37) vertically arranged on the upper steel frame (4) and the lower steel frame (3) are inserted from the upper and lower ends of the weight-reducing cavity (5) respectively.

7. The lightweight concrete panel with built-in multi-cavity H-shaped steel according to claim 6, characterized in that: The weight-reducing cavity (5) is filled with heat-insulating material, and after the filling is completed, the plug holes at both ends of the weight-reducing cavity (5) are penetrated.

8. The lightweight concrete panel with built-in multi-cavity H-shaped steel according to claim 1, characterized in that: A corrugated reinforcing rod (11) is provided on the outer side of the end plate (1); the crest of the reinforcing rod (11) is fixedly connected to the outer side of the end plate (1); and the plane where the crest and trough of the reinforcing rod (11) are located is perpendicular to the outer side of the end plate (1).

9. The lightweight concrete panel with built-in multi-cavity H-shaped steel according to claim 8, characterized in that: The process of fixedly connecting the reinforcing rod (11) and the end plate (1) is as follows: N1: heating the points to be punched on the end plate (1) by means of a heating component; N2: The end plate (1) is conveyed forward by a conveying component so that the heated point to be punched moves to the punching station, and at the same time, the unwinding component of the reinforcing rod (11) conveys the reinforcing rod (11) along the moving direction of the end plate (1) for a length that is 1.5-2 times the distance between adjacent punching points on the end plate (1); N3: The forming punch below the stamping station presses the reinforcing rod (11) against the outer surface of the end plate (1), and during the process, the reinforcing rod (11) is stuck in the avoidance groove of the forming punch; N4: The punch head above the punching station presses the heated punch point material on the end plate (1) downward into the forming cavity on the forming punch, and then the punch point material wraps the wave crest of the reinforcing rod (11) in the forming cavity; N5: The punch head above the stamping station is withdrawn backward, and then the forming punch below the stamping station is withdrawn backward, and the above N2-N4 steps are repeated.

10. A process for manufacturing a lightweight concrete slab with built-in multi-cavity H-shaped steel, applicable to any one of claims 1-9, characterized in that: The process includes the following steps: S1: first place the lower reinforcement frame (3) in the formed lower mold, and insert the lower end of the support column (35) on the lower reinforcement frame (3) into the positioning hole on the lower mold; S2: The connecting rod (23) is passed through all the H-shaped steels (2) in sequence from the through hole (21) of the H-shaped steel (2), and then each set of clamping rings (24) is placed on the web of one H-shaped steel (2) and the connecting rod (23) is pushed into the waist-shaped groove (22) by impact or extrusion, so that two symmetrically arranged clamping rings (24) are clamped on both sides of the web of the H-shaped steel (2), thereby obtaining a skeleton prefabricated part; S3: The obtained skeleton pre-assembled part is hoisted and placed on the lower steel bar frame (3). When placed, the lower flange of the H-shaped steel (2) presses the oblique guide structure of the symmetrically arranged clip (34) by relying on the deadweight of the H-shaped steel (2). Then, after the clip (34) is deformed, the lower flange of the H-shaped steel (2) passes through the oblique guide structure and enters between the clip end of the clip (34) and the limit column (33); S4: Turn the auxiliary vibration frame (36) over until the suspended end of the vibration rod (362) contacts the web of the H-shaped steel (2); S5: Insert the lower end of the weight-reducing chamber (5) into the plug-in column (37) on the lower reinforcement frame (3); S6: pouring the lightweight concrete matrix (6) into the lower mold until the lightweight concrete matrix (6) in the lower mold reaches the middle of the web of the H-shaped steel (2), and compacting the lightweight concrete matrix (6) by a concrete vibrating rod. During the process, the vibration is transmitted to the surrounding of the H-shaped steel (2) through the auxiliary vibration frame (36); S7: hoisting the upper reinforcement frame (4) onto the H-shaped steel (2), and then using an impact tool or an extrusion device to press the upper reinforcement frame (4) downward, thereby clamping the upper fastener (34) and the limit column (33) of the upper reinforcement frame (4) onto the flange of the H-shaped steel (2); S8: pouring the lightweight concrete matrix (6) into the lower mold again until the lightweight concrete matrix (6) in the lower mold is not higher than the upper end surface of the support column (35) on the upper steel frame (4), and tamping the lightweight concrete matrix (6) by a concrete vibrating rod during the process; S7: Curing the cast lightweight concrete matrix (6) by using 80-90°C steam curing for 6-10 hours.

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