Auxiliary device for accurately controlling quality of cast-in-place slab strip

Abstract

The utility model discloses a cast-in-place slab strip quality accurate control auxiliary device which comprises a top supporting beam, a bottom supporting beam and a tensioning rod, supporting feet are symmetrically arranged at the two ends of the top supporting beam, and the two supporting feet are arranged on prefabricated slabs on the two sides of a to-be-poured groove mold respectively in a supported mode so that the top supporting beam can be arranged above the to-be-poured groove mold in a spanning mode. A shearing gap is reserved between the top supporting beam and the prefabricated slab; the bottom supporting beam is arranged below a bottom template of the to-be-poured groove mold and is used for supporting the bottom template; the tensioning rod is vertically arranged in the to-be-poured groove mold in a penetrating mode, and the top end and the bottom end of the tensioning rod penetrate through the top supporting beam and the bottom supporting beam correspondingly and are connected with tensioning nuts in a screwed mode correspondingly so that the bottom supporting beam can abut against the bottom mold plate, and therefore the bottom mold plate can abut against the two prefabricated plates; the tensioning rod comprises an embedded rod, a dismounting rod and a connector, the embedded rod and the dismounting rod are coaxially connected with the connector in a screwed mode, and the bottom face of the connector is attached to the top face of the bottom formwork. The T-shaped pull rod can solve the problems that when an existing T-shaped pull rod is used, a horizontal rod is prone to swinging, the concrete consumption is large, and a painted surface is locally red.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, and in particular to a cast-in-place slab strip quality precision control auxiliary device. Background Art

[0002] Floor slab construction is a common part of the building construction field. During the construction process, a steel structure support layer is generally built first, and the steel structure support layer is supported by columns. Then, rectangular precast panels are built on the top of the steel structure support layer at intervals. Then, a bottom template is set below the strip gap between two adjacent precast panels, so that both sides of the bottom template are tightly attached to the bottom surfaces of the two adjacent precast panels to form a trough mold for pouring, and then concrete is poured in the trough mold to form a cast-in-place slab. After the cast-in-place slab solidifies, it is connected to the precast panels on both sides as a whole, thereby forming a dense floor slab.

[0003] From the above, it can be seen that the tightness of the fit between the bottom formwork and the bottom surface of the precast slab is a necessary condition for the successful pouring of the cast-in-place slab. If there is a problem with the tightness, the poured concrete will inevitably flow out from between the bottom formwork and the bottom surface of the precast slab, which will not only form a piled-up concrete slope at the edge of the precast slab, but may even cause the cast-in-place slab to be uneven with the bottom surface of the precast slab, which can only be manually cleaned and repaired later, which is extremely costly and has a low aesthetic appearance.

[0004] In order to solve the above problems, the prior art generally adopts T-shaped tie rods to control the sealing performance of the bottom template. Specifically, the horizontal rod of the T-shaped tie rod is spanned across the top surfaces of two adjacent prefabricated panels, and the vertical rod is passed downward through the bottom template and threaded, and the nut is screwed on. The bottom template is supported by the nut, so that the bottom template and the prefabricated panel are pressed tightly by the clamping effect of the horizontal rod and the nut.

[0005] However, the above device still has the following problems: (1) The horizontal rod of the T-shaped tie rod is easy to swing and even accidentally fall into the casting groove mold; (2) After the cast-in-place slab is solidified, it is necessary to pour another layer of concrete on the cast-in-place slab and the top surface of the precast slab. At this time, in order to submerge the horizontal rod of the T-shaped tie rod, the thickness of the poured concrete layer is limited by the diameter of the horizontal rod, resulting in an increase in the amount of concrete used; (3) After the floor is completed, it is necessary to remove the bottom formwork and then saw off the vertical rod of the T-shaped tie rod. At this time, the end face of the vertical rod is flush with the bottom surface of the cast-in-place slab. After the bottom surface of the floor is subsequently painted, the end of the vertical rod is prone to rust, resulting in partial reddening of the painted surface, which seriously affects the appearance. Utility Model Content

[0006] The utility model aims to provide a cast-in-place slab quality precision control auxiliary device, which can solve the problems of easy swing of the horizontal rod, large amount of concrete consumption and local reddening of the painted surface when the existing T-shaped pull rod is used.

[0007] The utility model is realized by the following technical solutions:

[0008] A device for precise quality control of cast-in-place slabs comprises a top support beam, wherein both ends of the top support beam are symmetrically provided with support legs, and the two support legs are respectively supported on precast plates on both sides of a trough mold to be cast, so that the top support beam is straddled above the trough mold to be cast, and a shear gap is reserved between the top support beam and the precast plates; a bottom support beam, wherein the bottom support beam is arranged below the bottom template of the trough mold to be cast, and is used to support the bottom template; a tensioning rod, wherein the tensioning rod is vertically penetrated in the trough mold to be cast, and the top and bottom ends of the tensioning rod respectively pass through the top support beam and the bottom support beam, and are respectively screwed with tensioning nuts, so that the bottom support beam is pressed against the bottom template, thereby pressing the bottom template against the two precast plates; the tensioning rod comprises an embedded rod, a disassembly rod and a connector, the embedded rod and the disassembly rod are coaxially screwed with the connector, and the bottom surface of the connector is attached to the top surface of the bottom template.

[0009] Optionally, the support leg includes a support rod, an adjustment nut and a locking nut, a support plate is vertically provided at the bottom end of the support rod, and the support plate is used to abut against the top surface of the prefabricated plate; the top end of the support rod passes through the top support beam and slides with the top support beam, the locking nut and the adjustment nut are respectively screwed on the top end of the support rod, and are respectively clamped on the top side and bottom side of the top support beam, and the adjustment nut is used to adjust the width of the shear gap.

[0010] Optionally, both the tensioning nut and the locking nut are provided with handles extending radially.

[0011] Optionally, the embedded rod is vertically mounted with a limiting bone plate, and the limiting bone plate is located at a middle position in the height direction of the groove mold to be cast.

[0012] Optionally, the connector is cylindrical, and the connector is coaxially screwed to the embedded rod and the disassembly rod; the bottom end surface of the connector is attached to the top surface of the bottom template.

[0013] Optionally, the connector is truncated cone-shaped, and the connector is coaxially screwed to the embedded rod and the disassembly rod; the end face of the connector with a larger diameter is attached to the top surface of the bottom template.

[0014] Optionally, the connector includes a shell and a stud nut, and the stud nut is coaxially sleeved in the shell; the embedded rod and the disassembly rod are respectively screwed to two ends of the stud nut.

[0015] Optionally, the shell is axially slidably connected to the stud nut; the inner wall of the shell is provided with a plurality of protrusions protruding inwardly, and the ends of the protrusions are provided with limit plates, which are used to be attached to the outer edge wall of the stud nut to limit the rotation of the shell and the stud nut.

[0016] Optionally, the top end of the stud nut extends outward to form a limiting disk, and the diameter of the limiting disk is slightly smaller than the outer diameter of the top end surface of the shell.

[0017] Optionally, the bottom support beam includes a channel steel and a wooden square, wherein the wooden square is partially embedded in a strip groove of the channel steel, and the wooden square is used to contact and squeeze the bottom template.

[0018] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0019] The utility model provides a cast-in-place slab quality precision control auxiliary device, by arranging a top support beam, a bottom support beam, a tension rod and a tension nut, and utilizing the tension rod and the tension nut to tighten the top support beam and the bottom support beam, forcing the bottom support beam to press the bottom formwork, thereby pressing the bottom formwork and the precast slab tightly, so as to ensure the airtightness of the trough mold to be cast, thereby ensuring that the cast-in-place slab and the bottom surface of the precast slab are flush; on this basis, by arranging the support feet, the top support beam is propped up, so that a shear gap is formed between the top support beam and the precast slab, and when the subsequent cast-in-place slab is solidified, when pouring concrete again, it can be poured thinly, and only the top surfaces of the precast slab and the cast-in-place slab need to be smoothed, and the concrete layer will not contact the top support beam during the pouring process, and when the re-cast concrete layer is solidified, the top support beam is disassembled, and then the support feet and the tension rod are cut along the top surface of the re-cast concrete layer, and the support feet can effectively increase the local friction force, so that the top support beam is stably erected on the precast slab; on this basis, By setting a tension rod including an embedded rod, a disassembly rod and a connector, and limiting the bottom surface of the connector to be attached to the top surface of the bottom template, when the concrete solidifies, the bottom support beam and the bottom template are removed in turn, and then the disassembly rod is unscrewed from the connector. At this time, the bottom surface of the connector is exposed, and then the connector is unscrewed from the embedded rod, so that a hole can be formed in the original position of the connector on the bottom surface of the cast-in-place slab, and the bottom end of the embedded rod is located in the hole and is not flush with the hole opening. At this time, the hole is filled with concrete until it is flush with the hole opening, and the bottom end of the embedded rod can be sealed in the concrete, and then the bottom surface of the floor slab can be subsequently painted. Since the end of the embedded rod is buried in the concrete, even if it is rusted, it will not cause the local reddening of the painted surface; through the mutual cooperation of the above-mentioned characteristics, the cast-in-place slab quality precision control auxiliary device can effectively solve the problems of easy swinging of the horizontal rod, large amount of concrete consumption and local reddening of the painted surface when the existing T-shaped pull rod is used. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0021] Figure 1 A schematic diagram of the use of the cast-in-place slab quality precision control auxiliary device provided by the embodiment of the utility model;

[0022] Figure 2 A schematic diagram of the cast-in-place slab quality precision control auxiliary device provided by the embodiment of the utility model after use (cutting);

[0023] Figure 3 A schematic diagram of disassembling a tension rod of a cast-in-place slab quality precision control auxiliary device provided by an embodiment of the utility model;

[0024] Figure 4 A half-section schematic diagram of a connector of a cast-in-place slab quality precision control auxiliary device provided by an embodiment of the utility model;

[0025] Figure 5 A top view of a cross-sectional view of a connector of a cast-in-place slab quality precision control auxiliary device provided in an embodiment of the utility model;

[0026] Figure 6 A schematic top view of a bottom support beam of a cast-in-place slab quality precision control auxiliary device provided by an embodiment of the utility model;

[0027] Figure 7 A side view schematic diagram of the bottom support beam of the cast-in-place slab quality precision control auxiliary device provided in an embodiment of the utility model.

[0028] Marks and corresponding parts names in the attached drawings:

[0029] 1-groove mould to be poured; 2-precast slab; 3-bottom mould; 4-cast-in-place slab strip; 5-re-cast concrete layer; 10-top support beam; 11-support foot; 111-support rod; 112-adjusting nut; 113-locking nut; 114-support plate; 20-bottom support beam; 21-channel steel; 22-wood; 30-tension rod; 31-embedded rod; 311-limiting plate; 32-disassembly rod; 33-connector; 331-shell; 3311-convex edge; 3312-limiting plate; 332-stud nut; 3321-limiting plate; 34-tension nut. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0031] Example

[0032] Please refer to Figures 1 to 7The present embodiment provides a cast-in-place slab quality precision control auxiliary device, comprising a top support beam 10, wherein two ends of the top support beam 10 are symmetrically provided with support legs 11, wherein the two support legs 11 are respectively supported on the precast panels 2 on both sides of the trough mold 1 to be cast, so that the top support beam 10 is arranged above the trough mold 1 to be cast, and a shear gap is reserved between the top support beam 10 and the precast panels 2; the second includes a bottom support beam 20, wherein the bottom support beam 20 is arranged below the bottom template 3 of the trough mold 1 to be cast, and is used to support the bottom template; the third includes a tension rod 30, The tension rod 30 is vertically penetrated in the trough mold 1 to be cast, and the top and bottom ends of the tension rod 30 respectively pass through the top support beam 10 and the bottom support beam 20, and are respectively screwed with tension nuts 34 to make the bottom support beam 20 press against the bottom template 3, thereby making the bottom template 3 press against the two prefabricated panels 2; the tension rod 30 includes an embedded rod 31, a disassembly rod 32 and a connector 33, the embedded rod 31 and the disassembly rod 32 are coaxially screwed with the connector 33, and the bottom surface of the connector 33 is attached to the top surface of the bottom template 3.

[0033] The auxiliary device for precise quality control of cast-in-place slab strip 4 provided in this embodiment is provided with a top support beam 10, a bottom support beam 20, a tension rod 30 and a tension nut 34. The tension rod 30 and the tension nut 34 are used to tighten the top support beam 10 and the bottom support beam 20, forcing the bottom support beam 20 to press the bottom template 3, so that the bottom template 3 is pressed against the precast plate 2 to ensure the airtightness of the trough mold 1 to be cast, thereby ensuring that the cast-in-place slab strip 4 is flush with the bottom surface of the precast plate 2; on this basis, the support legs 11 are provided to prop up the top support beam 10 so that the top support beam 10 is lifted up. A shear gap is formed between the support beam 10 and the precast panel 2. After the subsequent cast-in-place slab strip 4 solidifies, when pouring the concrete layer 5, it can be poured thinly. It is only necessary to grind the top surfaces of the precast panel 2 and the cast-in-place slab strip 4. During the pouring process, the poured concrete layer 5 will not contact the top support beam 10. When the poured concrete layer 5 solidifies, the top support beam 10 is removed, and then the support legs 11 and the tension rods 30 are cut along the top surface of the poured concrete layer 5; the support legs 11 can effectively increase the local friction force, so that the top support beam 10 is stably mounted on the precast panel. 2; on this basis, by setting the tension rod 30 including the embedded rod 31, the disassembly rod 32 and the connector 33, and limiting the bottom surface of the connector 33 to be attached to the top surface of the bottom template 3, when the concrete solidifies, the bottom support beam 20 and the bottom template 3 are removed in turn, and then the disassembly rod 32 is unscrewed from the connector 33, at this time the bottom surface of the connector 33 is exposed, and then the connector 33 is unscrewed from the embedded rod 31, a hole can be formed in situ on the bottom surface of the cast-in-place slab 4, and the bottom end of the embedded rod 31 is located in the hole, And it is not flush with the hole opening. At this time, the hole is filled with concrete until it is flush with the hole opening, and the bottom end of the embedded rod 31 can be sealed in the concrete. Then the bottom surface of the floor slab can be subsequently painted. Since the end of the embedded rod 31 is buried in the concrete, even if it is rusted, it will not cause the painted surface to turn red locally. Through the mutual cooperation of the above-mentioned characteristics, the cast-in-place slab quality precise control auxiliary device can effectively solve the problems of the existing T-shaped pull rod when using, the horizontal rod is easy to swing, the amount of concrete is large, and the painted surface is locally red.

[0034] In order to further explain the specific structure of the support foot 11, the support foot 11 includes a support rod 111, an adjusting nut 112 and a locking nut 113. A support plate 114 is vertically provided at the bottom end of the support rod 111, and the support plate 114 is used to abut against the top surface of the prefabricated plate 2; the top end of the support rod 111 passes through the top support beam 10 and slides with the top support beam 10, the locking nut 113 and the adjusting nut 112 are respectively screwed to the top end of the support rod 111, and are respectively clamped on the top side and the bottom side of the top support beam 10, and the adjusting nut 112 is used to adjust the width of the shear gap.

[0035] Through the above-mentioned setting, on the one hand, the main body is set as the support rod 111, which is convenient for cutting; on the other hand, it is convenient to screw with the locking nut 113 and the adjusting nut 112. The setting height of the adjusting nut 112 is directly related to the setting height of the top support beam 10. Therefore, by adjusting the setting height of the adjusting nut 112, the width of the shear gap can be adjusted.

[0036] In order to facilitate screwing, the tensioning nut 31 and the locking nut 113 are both provided with handles extending in the radial direction.

[0037] In order to improve the axial connection performance between the embedded rod 31 and the cast-in-place slab 4, the embedded rod 31 is vertically sleeved with a limiting bone plate 311, and the limiting bone plate 311 is located in the middle position in the height direction of the groove mold 1 to be cast.

[0038] Optionally, in some embodiments, the connector 33 is cylindrical, and the connector 33 is coaxially screwed with the embedded rod 31 and the disassembly rod 32 ; the bottom end surface of the connector 33 is attached to the top surface of the bottom template 3 .

[0039] Preferably, in this embodiment, the connector 33 is truncated cone-shaped, and the connector 33 is coaxially screwed with the embedded rod 31 and the disassembly rod 32 ; the end surface of the connector 33 with a larger diameter is attached to the top surface of the bottom template 3 .

[0040] The connector 33 is configured to be truncated cone-shaped and its large diameter end is limited to face downward, so that it is easy to disassemble later.

[0041] In order to further explain the specific structure of the connector 33, the connector 33 includes a shell 331 and a stud nut 332, and the stud nut 332 is coaxially sleeved in the shell 331; the embedded rod 31 and the disassembly rod 32 are respectively screwed to the two ends of the stud nut 332.

[0042] In order to facilitate the disassembly of the connector 33, the shell 331 is axially slidably connected to the stud nut 332; the inner wall of the shell 331 is provided with a plurality of flanges 3311 protruding inwardly, and the end of the flange 3311 is provided with a limiting plate 3312, and the limiting plate 3312 is used to be attached to the outer edge wall of the stud nut 332 to limit the rotation of the shell 331 and the stud nut 332.

[0043] With the above arrangement, during disassembly, the housing 331 and the stud nut 332 are first separated to make room, and then the stud nut 332 is unscrewed from the embedded rod 31 using a wrench.

[0044] In order to limit the disassembly direction of the shell 331 , the top end of the stud nut 332 extends outward to form a limiting disk 3321 , and the diameter of the limiting disk 3321 is slightly smaller than the outer diameter of the top end surface of the shell 331 .

[0045] Through the above arrangement, the limiting plate 3321 is used to limit the housing 331 so that it can only slide downward along the stud nut 332 for removal.

[0046] In order to avoid damage to the bottom template 3 on the basis of leveling, the bottom support beam 20 includes a channel steel 21 and a wooden square 22. The wooden square 22 is partially embedded in the strip groove of the channel steel 21, and the wooden square 22 is used to contact and squeeze the bottom template 3.

[0047] Through the above arrangement, the rigidity and shape of the channel steel 21 are utilized to ensure leveling, and then the wooden square 22 is utilized to replace the channel steel 21 to contact the bottom template 3, thereby utilizing the plasticity of the wooden square to avoid damage to the bottom template 3.

[0048] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A cast-in-place slab quality precision control auxiliary device, characterized in that: include: A top support beam (10), wherein two ends of the top support beam (10) are symmetrically provided with support legs (11), and the two support legs (11) are respectively supported on the precast panels (2) on both sides of the trough mold (1) to be cast, so that the top support beam (10) is arranged across the top of the trough mold (1) to be cast, and a shear gap is reserved between the top support beam (10) and the precast panels (2); A bottom support beam (20), the bottom support beam (20) being arranged below a bottom template (3) of the trough mold (1) to be cast, and being used to support the bottom template; A tension rod (30), the tension rod (30) is vertically inserted into the trough mold (1) to be cast, the top and bottom ends of the tension rod (30) respectively pass through the top support beam (10) and the bottom support beam (20), and are respectively screwed with tension nuts (34) to make the bottom support beam (20) abut against the bottom template (3), thereby making the bottom template (3) abut against the two precast panels (2); The tension rod (30) comprises an embedded rod (31), a disassembly rod (32) and a connector (33); the embedded rod (31) and the disassembly rod (32) are coaxially screwed to the connector (33); and the bottom surface of the connector (33) is attached to the top surface of the bottom template (3).

2. The cast-in-place slab quality precision control auxiliary device according to claim 1 is characterized in that: The support foot (11) comprises a support rod (111), an adjusting nut (112) and a locking nut (113); a support plate (114) is vertically provided at the bottom end of the support rod (111); the support plate (114) is used to abut against the top surface of the prefabricated plate (2); the top end of the support rod (111) passes through the top support beam (10) and slidably cooperates with the top support beam (10); the locking nut (113) and the adjusting nut (112) are respectively screwed to the top end of the support rod (111) and are respectively clamped on the top side and the bottom side of the top support beam (10); the adjusting nut (112) is used to adjust the width of the shear gap.

3. The cast-in-place slab quality precision control auxiliary device according to claim 2 is characterized in that: The tightening nut (34) and the locking nut (113) are both provided with handles extending in the radial direction.

4. The cast-in-place slab quality precision control auxiliary device according to claim 1 is characterized in that: The embedded rod (31) is vertically mounted on a limiting bone plate (311), and the limiting bone plate (311) is located at a middle position in the height direction of the groove mold (1) to be cast.

5. The cast-in-place slab quality precision control auxiliary device according to claim 1 is characterized in that: The connector (33) is cylindrical, and the connector (33) is coaxially screwed with the embedded rod (31) and the disassembly rod (32); The bottom end surface of the connector (33) is attached to the top surface of the bottom template (3).

6. The cast-in-place slab quality precision control auxiliary device according to claim 1 is characterized in that: The connector (33) is truncated cone-shaped, and the connector (33) is coaxially screwed with the embedded rod (31) and the disassembly rod (32); The end surface of the connector (33) with a larger diameter is attached to the top surface of the bottom template (3).

7. The cast-in-place slab quality precision control auxiliary device according to claim 6 is characterized in that: The connector (33) comprises a housing (331) and a stud nut (332), wherein the stud nut (332) is coaxially sleeved in the housing (331); The embedded rod (31) and the disassembly rod (32) are respectively screwed to two ends of the stud nut (332).

8. The cast-in-place slab quality precision control auxiliary device according to claim 7 is characterized in that: The housing (331) is slidably connected to the stud nut (332) along the axial direction; The inner wall of the shell (331) is provided with a plurality of protruding edges (3311) protruding inwardly, and a limiting plate (3312) is provided at the end of the protruding edge (3311). The limiting plate (3312) is used to be attached to the outer edge wall of the stud nut (332) to limit the rotation of the shell (331) and the stud nut (332).

9. The cast-in-place slab quality precision control auxiliary device according to claim 8 is characterized in that: The top end of the stud nut (332) extends outward to form a limiting disk (3321), and the diameter of the limiting disk (3321) is slightly smaller than the outer diameter of the top end surface of the shell (331).

10. The cast-in-place slab quality precision control auxiliary device according to claim 1 is characterized in that: The bottom support beam (20) comprises a channel steel (21) and a wooden square (22), wherein the wooden square (22) is partially embedded in a strip groove of the channel steel (21), and the wooden square (22) is used to contact and press the bottom template (3).

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