Pouring template for curved beam of prefabricated box beam
By designing a casting formwork including bottom mold seat, end molding, bending module and slide roller, the problems of seam staggering, low curve radius control accuracy and low template reuse in traditional curve beam pouring formwork design are solved, and the high-precision casting and construction efficiency of curve beams are improved.
Patent Information
- Application Number
- CN202510245573.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2025-04-15
AI Technical Summary
The traditional curved beam casting formwork design has problems such as seams staggered, low curve radius control accuracy, and low template reuse rate, resulting in discontinuity of the beam surface curve, large linear deviation, low construction efficiency and serious material waste.
A casting template including a base mold seat, an end molding, a bending module and a slide roller was designed. Through the bending of the long steel plate and the movement of the slide roller, the precise casting of the curved beam is achieved, ensuring the repeatability and high accuracy of the template.
The appearance curve of the curve beam is smoother, the control accuracy of the curve radius is improved, the cost of post-adjustment is reduced, the construction efficiency is improved, and material waste is reduced.
Smart Images
Figure CN119820683A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of prefabricated box girder mould structures, and in particular relates to a casting template for a prefabricated box girder curved beam. Background Art
[0002] In the field of bridge engineering, prefabricated box girders are widely used due to their high structural strength and fast construction efficiency. With the diversification of road line design, the demand for curved beams has increased significantly, which can adapt to complex terrain and curved paths and improve the overall smoothness and aesthetics of bridges. However, the prefabrication of curved beams faces significant technical challenges, especially the design and construction accuracy of casting formwork.
[0003] Traditional curved beam casting mostly adopts the segmented straight formwork splicing process. Specifically, during construction, multiple straight formworks need to be manually adjusted and spliced into an approximate curved contour. However, this method has the following defects: First, the template joints are prone to misalignment or edges, resulting in discontinuous curves on the beam surface, affecting the appearance quality; second, the segmented splicing process relies on the experience of construction personnel, and the curve radius control accuracy is low, which is easy to cause linear deviations of the beam body and increase the cost of later adjustments; third, the template reuse rate is low, and different curved beams need to be disassembled and reassembled, resulting in low construction efficiency and serious material waste. Summary of the invention
[0004] In view of this, the object of the present invention is to provide a casting template for a prefabricated box girder curved beam and to provide an adaptively adjustable curved beam casting structure.
[0005] In order to achieve the above object, the present invention provides the following technical solutions:
[0006] The present invention includes a bottom mold base, end mold plates are provided at both ends of the bottom mold base, bending modules are respectively provided on both sides of the bottom mold base, the bending modules include a long steel plate, fixing holes are respectively provided at both ends of the long steel plate, sliding rollers are fixed at the fixing holes, positioning holes are respectively provided at both ends of the two sides of the bottom mold base, the sliding rollers are inserted into the positioning holes to fix the two ends of the long steel plate; a plurality of retaining seats are provided along the bottom mold base and move along the vertical direction of the bottom mold base, and the ends of the plurality of retaining seats are abutted against the outer side of the long steel plate to make the long steel plate present a curved arc surface.
[0007] Furthermore, linear grooves are provided on both sides of the bottom mold base, and the bending module also includes a first roller and a second roller provided at one end of the bottom mold base, the first roller has one and is located on the inner side of the bend of the long steel plate, the second roller has two and is located on the outer side of the bend of the long steel plate, the first roller is located between the two second rollers, the first roller is driven by a motor, the long steel plate passes through the first roller and the second roller, the sliding roller moves along the groove, the positioning socket is located on the bottom side of the groove, the long steel plate has a bending tendency under the rolling pressure of the first roller and the second roller, and the long steel plate moves along the groove under the push of the first roller.
[0008] Furthermore, hanging plates are fixedly provided above both sides of the bottom mold seat, the groove rails are respectively opened on the bottom mold seat and the hanging plates, slides are respectively provided at the upper and lower ends of the support seat, the slides are respectively slidably set on the hanging plates and the bottom mold seat, and also include clamping screws, which are respectively threadedly connected to the bottom mold seat and the hanging plates, the clamping screws are pressed against the side of the slide, and the end of the support seat pressed against the outer side of the long steel plate is an arc surface.
[0009] Furthermore, a guide seat is provided between adjacent ones of the said butt seats, one end of the said guide seat is hinged on one of the said butt seats, and the other end is slidably provided on the other one of the said butt seats, a groove is provided on the said guide seat, and the groove is always parallel to the line connecting the ends of the adjacent ones of the said butt seats, and a pressure wheel is slid on the groove, and the outer side of the pressure wheel is always tangent to the line connecting the ends of the adjacent ones of the said butt seats.
[0010] Furthermore, it also includes straight rails fixed on both sides of the bottom mold base, a plurality of motor vehicles are reciprocatingly arranged on the straight rails, a straight rod is slidably arranged on the motor vehicle, the middle section of the straight rod is slidably arranged on the groove, and the pressure wheel is rotatably arranged at the end of the straight rod.
[0011] Furthermore, elastic pins with a diameter smaller than the outer diameter of the roller are respectively provided at both ends of the roller, and when the roller moves to a fixed position, the elastic pins are inserted into the positioning sockets.
[0012] The beneficial effects of the present invention are:
[0013] The present invention arranges two tough long steel plates to form curved baffles on both sides of the curved beam template. Fixing holes at both ends of the long steel plates are punched by a punching machine. The positions of the fixing holes are determined by the curve radius and the length of the curved beam, and the positions of the positioning holes are determined by the length of the curved beam. Sliding rollers are inserted into the positioning holes to fix the two ends of the long steel plates at the two ends of the bottom mold base, and the long steel plates are curved through the support of a number of abutments. By setting this mold, both sides of the cast single-section curved beam can form a relatively perfect curved surface structure, so that after the overall curved beam is connected, the appearance curve of the curved beam is smoother.
[0014] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:
[0016] Figure 1 This is an overall schematic diagram of a casting template according to an embodiment of the present invention;
[0017] Figure 2 This is a schematic diagram of the installation of a long steel plate according to an embodiment of the present invention;
[0018] Figure 3 This is a schematic diagram of fixing the sliding roller according to an embodiment of the present invention;
[0019] Figure 4 for Figure 2 AA section view;
[0020] Figure 5 for Figure 2 An enlarged schematic diagram of point B;
[0021] Figure 6 for Figure 5 CC section view;
[0022] Figure 7 This is a schematic diagram of the installation of the guide seat according to an embodiment of the present invention;
[0023] The markings in the attached drawings are as follows: 1. bottom mold base; 11. groove rail; 111. positioning socket; 12. hanging plate; 13. straight rail; 14. motor vehicle; 2. end mold plate; 3. bending module; 31. long steel plate; 311. fixing hole; 32. sliding roller; 321. elastic pin; 33. support seat; 331. slide table; 332. tightening screw; 34. first roller; 35. second roller; 36. guide seat; 361. groove; 362. pressure wheel; 363. straight rod. DETAILED DESCRIPTION
[0024] The invention discloses a casting template for a prefabricated box beam curved beam, such as Figure 1 As shown, it includes a bottom mold base 1, and end mold plates 2 are provided at both ends of the bottom mold base 1. Bending modules 3 are provided on both sides of the bottom mold base 1. The bending modules 3 include a long steel plate 31. Figure 3 The two ends of the long steel plate 31 are respectively provided with fixing holes 311, and the fixing holes 311 are fixed with sliding rollers 32, and the two ends of the sliding rollers 32 extend from the two sides of the long steel plate 31. Figure 5 and Figure 6 The bottom mold base 1 is also provided with positioning holes 111 at both ends, and the sliding roller 32 is inserted into the positioning holes 111 to fix the two ends of the long steel plate 31; Figure 2 As shown, a plurality of retaining seats 33 are provided along the bottom mold base 1 and move in a direction perpendicular to the bottom mold base 1. The ends of the plurality of retaining seats 33 are pressed against the outer side of the long steel plate 31 so that the long steel plate 31 presents a curved arc surface. The end mold plate 2 blocks the two ends of the bottom mold base 1 to form a groove-shaped casting template. The steel bars are arranged in the casting template and then filled with concrete to complete the casting of the curved beam.
[0025] This casting template, by arranging two tough long steel plates 31, constitutes the curved baffles on both sides of the curved beam template. The fixing holes 311 at both ends of the long steel plates 31 are punched by a punching machine. The positions of the fixing holes 311 are determined by the curve radius and the length of the curved beam, and the position of the positioning socket 111 is determined by the length of the curved beam; the sliding roller 32 is inserted into the positioning socket 111 to fix the two ends of the long steel plate 31 at the two ends of the bottom mold base 1, and the long steel plate 31 is supported by a plurality of abutments 33 to make it curved; by setting this mold, both sides of the cast single-section curved beam can form a relatively perfect curved surface structure, so that after the overall curved beam is connected, the appearance curve of the curved beam is smoother.
[0026] For further solutions, refer to Figure 2 and Figure 5 , linear groove rails 11 are also provided on both sides of the bottom mold base 1, and the bending module 3 also includes a first roller 34 and a second roller 35 provided at one end of the bottom mold base 1, the first roller 34 has one and is located on the inner side of the bending of the long steel plate 31, the second roller 35 has two and is located on the outer side of the bending of the long steel plate 31, the first roller 34 is located between the two second rollers 35, the first roller 34 is driven by a motor, the long steel plate 31 passes through the first roller 34 and the second roller 35, the sliding roller 32 moves along the groove rail 11, the positioning socket 111 is located on the bottom side of the groove rail 11, the long steel plate 31 has a bending tendency under the rolling pressure of the first roller 34 and the second roller 35, and the long steel plate 31 moves along the groove rail 11 under the push of the first roller 34.
[0027] In this structure, the first roller 34 and the second roller 35 are set to push and bend the long steel plate 31, so that the long steel plate 31 has a tendency to bend. Under the fixation of the positioning socket 111 and the support of the stop 33, a smoother arc surface can be formed. The first roller 34 and the second roller 35 serve as the conveying and bending structure of the long steel plate 31 to assist the movement of the long steel plate 31; the groove rail 11 serves as the guiding structure of the long steel plate 31 and the slide rail to clamp and guide the long steel plate 31 to avoid excessive bending of the long steel plate 31 and assist the arrangement of the long steel plate 31.
[0028] In a further solution, Figure 1 and Figure 4 As shown, hanging plates 12 are fixedly provided on the upper sides of the bottom mold base 1, and the groove rails 11 are respectively opened on the bottom mold base 1 and the hanging plates 12, and the upper and lower ends of the sliding rollers 32 are respectively slidably arranged in the upper and lower groove rails 11, and the long steel plate 31 moves parallelly under the guidance of the two grooves 361 rails 11, and the upper and lower ends of the support seat 33 are respectively provided with slides 331, and the slides 331 are respectively slidably arranged on the hanging plates 12 and the bottom mold base 1, and also include tightening screws 332, and the tightening screws 332 are respectively threadedly connected to the bottom mold base 1 and the hanging plates 12, and the tightening screws 332 are pressed against the side of the slide 331, and the end of the support seat 33 pressed against the outer side of the long steel plate 31 is an arc surface.
[0029] In this structure, by providing two groove rails 11, the moving path of the long steel plate 31 can be guided, and the two tightening screws 332 can support the retaining seat 33 so that the retaining seat 33 can be fixed at a required position.
[0030] In a further solution, Figure 7 As shown, a guide seat 36 is provided between adjacent ones of the retaining seats 33, and a hinge shaft and a sliding shaft are provided between two adjacent retaining seats 33, respectively. The distance between the hinge shaft and the supporting end of the retaining seat 33 is equal to the distance between the sliding shaft and the supporting end of the retaining seat 33. Between two different adjacent retaining seats 33, the hinge shaft and the sliding shaft are staggered with each other. One end of the guide seat 36 is hinged on one of the retaining seats 33, and the other end is slid on the other one of the retaining seats 33. A groove 361 is provided on the guide seat 36, and the groove 361 is always parallel to the line connecting the ends of the adjacent ones of the retaining seats 33. A sliding pressure wheel 362 is provided on the groove 361, and the outer side of the pressure wheel 362 is always tangent to the line connecting the ends of the adjacent ones of the retaining seats 33.
[0031] By setting the guide seat 36, after fixing the retaining seat 33, the guide seat 36 between two adjacent retaining seats 33 is parallel to the line connecting the adjacent ends of the retaining seats 33, and the pressure movement path slidably set on the guide seat 36 is parallel to the line connecting the adjacent ends of the retaining seats 33. After the pouring of concrete is completed, the pressure wheels 362 on the guide seats 36 can be moved respectively to move the pressure wheels 362 to the outside of the long steel plate 31, and the long steel plate 31 with a prominent bending curve is rolled to avoid excessive deformation of the long steel plate 31, so that the entire long steel plate 31 is evenly distributed between the retaining seats 33, and the bending uniformity of the long steel plate 31 is further improved.
[0032] In a further solution, Figure 7 As shown, it also includes straight rails 13 fixed on both sides of the bottom mold base 1, and a plurality of motor vehicles 14 are reciprocatingly provided on the straight rails 13. A straight rod 363 is slidably provided on the motor vehicle 14. The middle section of the straight rod 363 is slidably set on the groove 361, and the pressure wheel 362 is rotatably set at the end of the straight rod 363.
[0033] By arranging the motor vehicle 14, during the concrete solidification process, the pressing wheel 362 is reciprocated to continuously and evenly pave the outer side of the long steel plate 31.
[0034] In a further solution, Figure 6 As shown, both ends of the sliding roller 32 are provided with elastic pins 321 with a diameter smaller than the outer diameter of the sliding roller 32. When the sliding roller 32 moves to the fixed position, the elastic pins 321 are inserted into the positioning sockets 111. By providing the elastic pins 321, when the sliding roller 32 reaches the fixed socket during the movement of the steel plate, the elastic pins 321 are inserted into the fixed sockets to fix the sliding roller 32.
[0035] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.
Claims
1. A casting template for a prefabricated box beam curved beam, characterized in that: The invention comprises a bottom die seat (1), end die plates (2) are arranged at both ends of the bottom die seat (1), bending modules (3) are arranged on both sides of the bottom die seat (1), the bending modules (3) comprise a long steel plate (31), fixing holes (311) are arranged at both ends of the long steel plate (31), sliding rollers (32) are fixed at the fixing holes (311), positioning holes (111) are arranged at both ends of the two sides of the bottom die seat (1), the sliding rollers (32) are inserted into the positioning holes (111), so that the two ends of the long steel plate (31) are fixed; a plurality of retaining seats (33) are arranged along the bottom die seat (1) and move in a vertical direction along the bottom die seat (1), and the ends of the plurality of retaining seats (33) are pressed against the outer side of the long steel plate (31), so that the long steel plate (31) presents a curved arc surface.
2. The casting template for the prefabricated box girder curved beam according to claim 1 is characterized in that: The bottom mold base (1) is also provided with linear groove rails (11) on both sides. The bending module (3) also includes a first roller (34) and a second roller (35) provided at one end of the bottom mold base (1). The first roller (34) has one and is located on the inner side of the bend of the long steel plate (31). The second roller (35) has two and is located on the outer side of the bend of the long steel plate (31). The first roller (34) is located between the two second rollers (35). The roller (34) is driven by a motor, the long steel plate (31) passes through the first roller (34) and the second roller (35), the sliding roller (32) moves along the groove rail (11), the positioning socket (111) is located at the bottom side of the groove rail (11), the long steel plate (31) has a bending tendency under the rolling pressure of the first roller (34) and the second roller (35), and the long steel plate (31) moves along the groove rail (11) under the push of the first roller (34).
3. The casting template for the prefabricated box girder curved beam according to claim 2 is characterized in that: A suspension plate (12) is fixedly provided above both sides of the bottom mold base (1), the groove rail (11) is respectively opened on the bottom mold base (1) and the suspension plate (12), and a slide (331) is respectively provided at the upper and lower ends of the stop seat (33), and the slide (331) is respectively slidably arranged on the suspension plate (12) and the bottom mold base (1), and also includes a clamping screw (332), the clamping screw (332) is respectively threadedly connected to the bottom mold base (1) and the suspension plate (12), the clamping screw (332) is pressed against the side of the slide (331), and the end of the stop seat (33) pressed against the outer side of the long steel plate (31) is an arc surface.
4. The casting template for the prefabricated box girder curved beam according to claim 3 is characterized in that: A guide seat (36) is provided between adjacent retaining seats (33), one end of the guide seat (36) is hinged on one of the retaining seats (33), and the other end is slidably provided on the other retaining seat (33), a groove (361) is provided on the guide seat (36), and the groove (361) is always parallel to the line connecting the ends of the adjacent retaining seats (33), a pressing wheel (362) is slidably provided on the groove (361), and the outer side of the pressing wheel (362) is always tangent to the line connecting the ends of the adjacent retaining seats (33).
5. The casting template for the prefabricated box-beam curved beam according to claim 4 is characterized in that: It also includes straight rails (13) fixed on both sides of the bottom mold base (1), a plurality of motor vehicles (14) are reciprocatingly arranged on the straight rails (13), a straight rod (363) is slidably arranged on the motor vehicle (14), the middle section of the straight rod (363) is slidably arranged on the strip groove (361), and the pressure wheel (362) is rotatably arranged at the end of the straight rod (363).
6. The casting template for the prefabricated box girder curved beam according to claim 2, characterized in that: Elastic pins (321) having a diameter smaller than the outer diameter of the sliding roller (32) are respectively provided at both ends of the sliding roller (32); when the sliding roller (32) moves to a fixed position, the elastic pins (321) are inserted into the positioning insertion holes (111).