Prestressed concrete steel bar truss prefabricated plate production equipment and production method

Abstract

The present invention proposes a prestressed concrete steel truss prefabricated panel production equipment and production method, the production equipment includes a plurality of main body modules and two cross beam modules, the adjacent main body modules are detachably connected, the two cross beam modules are respectively located at the two ends of the plurality of main body modules and are fixedly connected to the ends thereof; the main body module includes a longitudinal beam, a tie beam, a bottom mold and a support, the two longitudinal beams are arranged horizontally and parallel on the support, the tie beam is fixedly connected between the two longitudinal beams, the bottom mold is located above the tie beam and is fixedly connected to the tie beam; the cross beam module includes a C-shaped steel beam and a rib plate, the webs of the two C-shaped steel beams are arranged oppositely, and there is a gap between them, the wing plates of the two C-shaped steel beams are fixedly connected to the ends of the main body modules through flanges, and the rib plate is fixedly arranged on the outside of the C-shaped steel beam. The present invention realizes the production of prestressed concrete steel truss prefabricated panels of various specifications, effectively reduces production costs, and improves component quality.

Description

Technical Field

[0001] The present invention relates to the technical field of prestressed concrete component production, and in particular to a prestressed concrete steel bar truss prefabricated plate production device and a production method. Background Art

[0002] Prestressing technology is a technology used to produce prefabricated prestressed concrete components. Applying it to reinforced truss concrete prefabricated panels can effectively increase the applicable span of the prefabricated panels, reduce the thickness of the prefabricated bottom plate, and improve the mechanical properties of the prefabricated panels.

[0003] The prestressing method is used to produce prestressed components. Before pouring concrete, the prestressed steel wire is tensioned and anchored. After the concrete strength reaches the design requirements, the prestressed steel wire is released to form a prestressed concrete component. The stress control of the prestressed tendons is the key to the production of prestressed components by the prestressing method. It determines the quality of prestressed components. During the production process, the corresponding process flow is required to ensure it.

[0004] Steel formwork pedestals are mostly used for factory prefabrication of prestressed components. During the production process of prefabricated components, they can support the prestressed tendons after tensioning and serve as the template for prefabricated components. The length of traditional steel formwork pedestals is fixed and cannot be adjusted according to actual needs. They have high requirements for production sites, high production costs for prestressed components, and cannot meet the production needs of prestressed concrete steel truss prefabricated panels. Summary of the invention

[0005] The purpose of the present invention is to provide a prestressed concrete steel truss prefabricated panel production equipment and production method, which solves the problems in the prior art that the length of the traditional steel mold pedestal is fixed and cannot be adjusted according to actual needs, has high requirements on the production site, and has a high production cost of prestressed components.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] In the first aspect, the present invention provides a prestressed concrete reinforced truss prefabricated panel production equipment, comprising a plurality of main body modules and two cross beam modules, wherein adjacent main body modules are detachably connected, and the two cross beam modules are respectively located at both ends of the plurality of main body modules and fixedly connected to their ends; the main body module comprises a longitudinal beam, a tie beam, a bottom mold and a support, wherein the two longitudinal beams are arranged on the support in parallel along a horizontal direction, the tie beam is fixedly connected between the two longitudinal beams, and the bottom mold is located above the tie beam and fixedly connected to the tie beam; the cross beam module comprises a C-shaped steel beam and a rib plate, wherein the webs of the two C-shaped steel beams are arranged opposite to each other, and a gap is provided between the two webs, and the wing plates of the two C-shaped steel beams are fixedly connected to the ends of the main body modules through flanges, and the rib plate is fixedly arranged on the outside of the C-shaped steel beam, and a plurality of positioning holes are provided in a straight line on the rib plate, and the plurality of positioning holes correspond to the gaps.

[0008] As a preferred solution, it also includes prestressed steel wires, clip anchors, end forms and side forms, wherein there are multiple end forms and side forms, and two end forms and two side forms are combined into a rectangular frame by magnetic attraction. The rectangular frame is located on the bottom form and is used for pouring concrete. The prestressed steel wires are passed through positioning holes of the rib plate located outside the two beam modules, and clip anchors are installed at the ends of the prestressed steel wires.

[0009] As a preferred embodiment, the support includes a screw, a sleeve and a base, the bottom end of the sleeve is fixedly connected to the base, the sleeve has a threaded hole inside, the lower part of the screw is inserted into the threaded hole and threadedly connected thereto, and the upper part of the screw is fixedly connected to the longitudinal beam.

[0010] As a preferred solution, a plurality of lifting rings are fixedly connected to the longitudinal beam, and the lifting rings are used for lifting the main module.

[0011] As a preferred solution, at least two straight holes are respectively opened at both ends of the combing plate, and the two straight holes are fixedly connected to the wing plates of the two C-shaped steel beams by bolts.

[0012] In a second aspect, the present invention provides a method for producing a prestressed concrete steel bar truss prefabricated plate, comprising:

[0013] 1) Production preparation: According to the design drawing of the prefabricated panel components, determine the cross-sectional diameter of the prestressed steel wire, adjust the installation height of the combing plate, complete the vertical positioning of the prestressed steel wire, select the corresponding positioning holes, complete the horizontal positioning of the prestressed steel wire, determine the position of the end mold and side mold according to the size of the prefabricated panel components, and combine them into a rectangular frame by magnetic attraction;

[0014] 2) Arrangement of prestressed steel wire: pass the prestressed steel wire through the selected positioning hole of the comb plate located on the outside of the beam module, adjust the length of the prestressed steel wire extending out of the comb plate, and install the clip anchor after meeting the tensioning and anchoring requirements;

[0015] 3) Tensioning: Tensioning is performed by jacks at the tensioning end. Tensioning is performed one by one, symmetrically and alternately from the middle to both sides. First, the prestressed steel wire is tensioned and straightened, and then controlled tensioning is performed, and the elongation of the prestressed steel wire is checked;

[0016] 4) Steel bar binding: according to the design requirements, put the steel bar truss and the longitudinal and transverse ordinary steel bars into the rectangular frame and bind them after they are in place;

[0017] 5) Concrete pouring and curing: pour concrete into the rectangular frame, vibrate and compact it, roughen the surface and then cover with film for curing;

[0018] 6) Release: Release the concrete cube test block when the compressive strength of the concrete cube test block cured under the same conditions reaches 75% of the design strength;

[0019] 7) Demoulding: After the sheet is placed, it can be demoulded and hung to the corresponding position for storage.

[0020] As a preferred embodiment, in step 6), the tensioning includes: cutting the prestressed steel wires with a cutting tool, selecting the cutting position between two adjacent end molds, and cutting symmetrically and alternately from the middle to both sides, and cutting off the excess prestressed steel wires after all the prestressed steel wires are tensioned.

[0021] Compared with the prior art, the beneficial effects of the present invention include: adopting a modular assembled steel formwork pedestal with a stable structure, easy assembly and adjustment, and coordinating with the corresponding process flow to realize the production of prestressed concrete steel truss prefabricated panels of various specifications, effectively reducing production costs and improving component quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0023] Figure 1 It is a structural schematic diagram of a prestressed concrete steel bar truss prefabricated panel production device (excluding the end form and side form) according to an embodiment of the present invention;

[0024] Figure 2 Another structural schematic diagram of a prestressed concrete steel bar truss prefabricated panel production device according to an embodiment of the present invention;

[0025] Figure 3 for Figure 2 Front view of the production equipment for precast slabs of prestressed concrete reinforced trusses;

[0026] Figure 4 for Figure 2Side view of the production equipment for precast slabs of prestressed concrete reinforced trusses;

[0027] Figure 5 It is another structural schematic diagram of the prestressed concrete steel bar truss prefabricated plate production equipment (excluding accessories) according to an embodiment of the present invention;

[0028] Figure 6 It is a structural schematic diagram of a main module of an embodiment of the present invention;

[0029] Figure 7 For along Figure 6 Sectional view along line AA;

[0030] Figure 8 For along Figure 6 Sectional view along the midline BB;

[0031] Fig. 9 It is a structural schematic diagram of a beam module according to an embodiment of the present invention;

[0032] Fig.10 For along Fig. 9 Sectional view of the mid-CC line;

[0033] Fig.11 This is a schematic diagram of the connection structure between the main body module and the beam module according to an embodiment of the present invention;

[0034] Fig.12 A schematic structural diagram of a support according to an embodiment of the present invention;

[0035] Fig.13 The present invention is a flowchart of a method for producing a prestressed concrete steel truss prefabricated panel according to an embodiment of the present invention.

[0036] Numbers in the figure: 100 main module, 200 beam module, 1 longitudinal beam, 2 tie beam, 3 bottom formwork, 4 support, 401 base, 402 sleeve, 403 screw, 5C-shaped steel beam, 6 comb reinforcement plate, 7 prestressed steel wire, 8 clip anchor, 9 end formwork, 10 side formwork, 11 lifting ring, 12 flange, 13 positioning hole, 14 straight hole. DETAILED DESCRIPTION

[0037] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction to the technical solution of the present invention.

[0038] According to one embodiment of the present invention, Figures 1 to 5The present invention provides a prestressed concrete steel truss prefabricated panel production equipment, including a main body module 100 and a cross beam module 200, the number of the main body modules 100 is multiple, the adjacent main body modules 100 are detachably connected, and the two cross beam modules 200 are respectively located at both ends of the multiple main body modules 100 and fixedly connected to their ends. The above-mentioned detachable connection and fixed connection method can be connected by high-strength bolts.

[0039] In an alternative embodiment, if Figure 1 As shown, the device includes three main body modules 100 and two cross beam modules 200. The three main body modules 100 are connected by high-strength bolts. The two cross beam modules 200 are respectively located outside the first and last main body modules 100 and are fixedly connected to the ends of the main body modules 100 by high-strength bolts.

[0040] In an alternative embodiment, if Figures 2 to 5 As shown, the device includes two main body modules 100 and two cross beam modules 200. The two main body modules 100 are connected by high-strength bolts. The two cross beam modules 200 are respectively located outside the first and last main body modules 100 and are fixedly connected to the ends of the main body modules 100 by high-strength bolts.

[0041] It can be understood that the number of main modules 100 can be adjusted according to actual production requirements to meet production needs and reduce production costs.

[0042] like Figures 6 to 8 As shown, the main module 100 includes a longitudinal beam 1, a tie beam 2, a bottom mold 3 and a support 4. The two longitudinal beams 1 are arranged in parallel on the support 4 in the horizontal direction. The tie beam 2 is fixedly connected between the two longitudinal beams 1. There are multiple tie beams 2. The bottom mold 3 is located above the tie beam 2 and is fixedly connected thereto. The fixed connection method can be a bolt connection or a welding connection.

[0043] Specifically, Fig.12 As shown, the support 4 comprises a screw rod 403, a sleeve 402 and a base 401. The bottom end of the sleeve 402 is fixedly connected to the base 401. The sleeve 402 has a threaded hole inside. The lower part of the screw rod 403 is inserted into the threaded hole and threadedly connected thereto. The upper part of the screw rod 403 is fixedly connected to the longitudinal beam 1. By rotating the base 401, the extension amount of the screw rod 403 can be adjusted, thereby adjusting the height of the longitudinal beam 1.

[0044] Furthermore, a plurality of lifting rings 11 are fixedly connected to the longitudinal beam 1 , and the lifting rings 11 are used for lifting the main module 100 .

[0045] like Figures 9 to 11As shown, the cross beam module 200 comprises a C-shaped steel beam 5 and a rib plate 6. The webs of the two C-shaped steel beams 5 are arranged opposite to each other with a gap therebetween. The flanges of the two C-shaped steel beams 5 are fixedly connected to the ends of the longitudinal beam 1 through flanges 12. The rib plate 6 is fixedly arranged on the outside of the C-shaped steel beam 5, and a plurality of positioning holes 13 are opened in a straight line on the rib plate 6. The plurality of positioning holes 13 correspond to the gaps. Preferably, the positioning holes 13 are located on the central horizontal plane of the gap.

[0046] At least two straight holes 14 are respectively provided at both ends of the rib plate 6, and the two straight holes 14 are respectively fixedly connected to the wing plates of the two C-shaped steel beams 5 by bolts. The straight hole 14 design is adopted to facilitate the adjustment of the vertical height of the rib plate 6 and facilitate the passing and positioning of the prestressed steel wire 7.

[0047] Please refer again Figure 2 The equipment also includes accessories such as prestressed steel wire 7, clip anchor 8, end mold 9 and side mold 10. There are multiple end molds 9 and side molds 10. Two end molds 9 and two side molds 10 are combined into a rectangular frame by magnetic attraction. The rectangular frame is located on the bottom mold 3 and is used for pouring concrete. The prestressed steel wire 7 is inserted into the positioning hole 13 of the combing plate 6 located outside the two beam modules 200, and a clip anchor 8 is installed at the end of the prestressed steel wire 7.

[0048] like Fig.13 As shown, the present invention also provides a method for producing a prestressed concrete steel bar truss prefabricated plate, comprising:

[0049] 1) Production preparation: According to the design drawing of the prefabricated plate component, determine the cross-sectional diameter of the prestressed steel wire 7, adjust the installation height of the combing plate 6, complete the vertical positioning of the prestressed steel wire 7, select the corresponding positioning hole 13, complete the horizontal positioning of the prestressed steel wire 7, determine the position of the end mold 9 and the side mold 10 according to the size of the prefabricated plate component, and combine them into a rectangular frame by magnetic attraction.

[0050] 2) Arrangement of prestressed steel wire 7: pass the prestressed steel wire 7 through the positioning hole 13 of the selected rib plate 6 located outside the beam module 200, adjust the length of the prestressed steel wire 7 extending out of the rib plate 6, and install the clip anchor 8 after meeting the tensioning and anchoring requirements.

[0051] 3) Tensioning: Tensioning is performed by jacks at the tensioning end. Tensioning is performed one by one, symmetrically and alternately from the middle to both sides. The prestressed steel wire 7 is first tensioned and straightened, and then controlled tensioning is performed, and the elongation of the prestressed steel wire 7 is checked. The jack is located outside a beam module 200. The tensioning end of the prestressed steel wire 7 is the end where the jack is placed, and the other end of the prestressed steel wire 7 is the fixed end. The jack adopts a through-hole jack. After the prestressed steel wire 7 passes through the jack, it is tensioned in conjunction with the clip anchor 8.

[0052] 4) Rebar binding: According to the design requirements, place the steel truss and longitudinal and transverse ordinary steel bars into the rectangular frame and bind them after they are in place.

[0053] 5) Concrete pouring and curing: Pour concrete into the rectangular frame and vibrate it to make it dense. After roughening the surface, cover it with film and then cure it.

[0054] 6) Release: Release the prestressing wires when the compressive strength of the concrete cube test block cured under the same conditions reaches 75% of the design strength. Specifically, the release step includes: using a cutting tool to cut the prestressed steel wires 7, the cutting position is selected between two adjacent end molds 9, and the cutting is symmetrically alternating from the middle to both sides. After all the prestressed steel wires 7 are released, the excess prestressed steel wires 7 are cut off.

[0055] 7) Demoulding: After the sheet is placed, it can be demoulded and hung to the corresponding position for storage.

[0056] In summary, the present invention discloses a prestressed concrete steel truss prefabricated panel production equipment and production method, and its beneficial effects include: adopting a modular assembled steel mold pedestal, which has a stable structure and is easy to assemble and adjust, and cooperates with the corresponding process flow to realize the production of prestressed concrete steel truss prefabricated panels of various specifications, effectively reducing production costs and improving component quality.

[0057] The technical scope of the present invention is not limited to the contents in the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of ​​the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A prestressed concrete steel truss prefabricated panel production equipment, characterized in that: It comprises a plurality of main body modules and two cross beam modules, wherein adjacent main body modules are detachably connected, and the two cross beam modules are respectively located at two ends of the plurality of main body modules and fixedly connected to their ends; The main body module comprises a longitudinal beam, a tie beam, a bottom mold and a support, wherein two longitudinal beams are arranged on the support in parallel along a horizontal direction, the tie beam is fixedly connected between the two longitudinal beams, and the bottom mold is located above the tie beam and fixedly connected thereto; The crossbeam module includes a C-shaped steel beam and a rib plate. The webs of the two C-shaped steel beams are arranged opposite to each other with a gap therebetween. The wing plates of the two C-shaped steel beams are fixedly connected to the ends of the main module via flanges. The rib plate is fixedly arranged on the outside of the C-shaped steel beam and has a plurality of positioning holes in a straight line shape on the rib plate, and the plurality of positioning holes correspond to the gaps.

2. The prestressed concrete steel bar truss prefabricated panel production equipment according to claim 1 is characterized in that: It also includes prestressed steel wire, clip anchors, end molds and side molds. There are multiple end molds and side molds. Two end molds and two side molds are combined into a rectangular frame by magnetic attraction. The rectangular frame is located on the bottom mold and is used for pouring concrete. The prestressed steel wire is passed through the positioning holes of the combing plate located on the outside of the two beam modules, and clip anchors are installed at the ends of the prestressed steel wire.

3. The prestressed concrete steel bar truss prefabricated panel production equipment according to claim 1 is characterized in that: The support includes a screw, a sleeve and a base. The bottom end of the sleeve is fixedly connected to the base. The sleeve has a threaded hole inside. The lower part of the screw is inserted into the threaded hole and threadedly connected thereto. The upper part of the screw is fixedly connected to the longitudinal beam.

4. The prestressed concrete steel bar truss prefabricated panel production equipment according to claim 1 is characterized in that: A plurality of lifting rings are fixedly connected to the longitudinal beam, and the lifting rings are used for lifting the main module.

5. The prestressed concrete steel bar truss prefabricated panel production equipment according to claim 1 is characterized in that: At least two straight holes are respectively opened at both ends of the combing rib plate, and the two straight holes are fixedly connected to the wing plates of the two C-shaped steel beams through bolts.

6. A production method of a prestressed concrete steel bar truss prefabricated panel production equipment according to any one of claims 1 to 5, characterized in that: include: 1) Production preparation: According to the design drawing of the prefabricated panel components, determine the cross-sectional diameter of the prestressed steel wire, adjust the installation height of the combing plate, complete the vertical positioning of the prestressed steel wire, select the corresponding positioning holes, complete the horizontal positioning of the prestressed steel wire, determine the position of the end mold and side mold according to the size of the prefabricated panel components, and combine them into a rectangular frame by magnetic attraction; 2) Arrangement of prestressed steel wire: pass the prestressed steel wire through the selected positioning hole of the comb plate located on the outside of the beam module, adjust the length of the prestressed steel wire extending out of the comb plate, and install the clip anchor after meeting the tensioning and anchoring requirements; 3) Tensioning: Tensioning is performed by jacks at the tensioning end. Tensioning is performed one by one, symmetrically and alternately from the middle to both sides. First, the prestressed steel wire is tensioned and straightened, and then controlled tensioning is performed, and the elongation of the prestressed steel wire is checked; 4) Steel bar binding: according to the design requirements, put the steel bar truss and the longitudinal and transverse ordinary steel bars into the rectangular frame and bind them after they are in place; 5) Concrete pouring and curing: pour concrete into the rectangular frame, vibrate and compact it, roughen the surface and then cover with film for curing; 6) Release: Release the concrete cube test block when the compressive strength of the concrete cube test block cured under the same conditions reaches 75% of the design strength; 7) Demoulding: After the sheet is placed, it can be demoulded and hung to the corresponding position for storage.

7. The method for producing prestressed concrete steel bar truss prefabricated panels according to claim 6, characterized in that: In step 6), the placing of the sheet includes: Use cutting tools to cut the prestressed steel wires. The cutting position is selected between two adjacent end molds. Cut symmetrically and alternately from the middle to both sides. After all the prestressed steel wires are stretched, cut off the excess prestressed steel wires.

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