A prefabricating device for prefabricating a steel beam prefabricated bridge deck

Abstract

The utility model relates to bridge construction equipment technical field, especially point to a kind of prefabricated device of steel beam prefabricated bridge deck, solve the problem of low turnover efficiency, poor site adaptability in prior art prefabricated device, including pedestal, bottom form and side form, pedestal is equipped with anchor bolt for fixing bottom form, bottom form can be detachably installed on the anchor bolt of pedestal;Side form is connected with bottom form, and side form is enclosed on bottom form to form rectangular cavity for pouring prefabricated slab;Bottom form is equipped with support bracket for supporting and fixing side form, and support bracket is located outside rectangular cavity.The utility model has the beneficial effect that: bottom form is detachably installed with pedestal by anchor bolt, after concrete initial setting, side form can be disassembled, and bottom form is separated from pedestal, so that bottom form can be transported with prefabricated slab, pedestal and side form can be quickly reused, solve the problem of slow turnover caused by traditional device bottom form fixation.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction equipment technology, and in particular to a prefabrication device for steel beam precast bridge decks. Background Technology

[0002] In the construction of precast steel bridge decks, the performance of the prefabrication equipment directly affects the quality of the precast slabs and the construction efficiency. In existing technologies, the bottom formwork of conventional bridge deck prefabrication platforms is typically rigidly fixed to the substructure or supporting structure and cannot be disassembled. This means that after concrete pouring, the precast slabs must be allowed to reach 85% of their design strength before they can be transported, severely impacting the platform's turnover efficiency. To accelerate construction, some prefabrication plants increase the number of platforms to speed up the production cycle. However, as the size of the precast slabs increases, the required site area multiplies, making this approach difficult to implement for projects with limited space, such as those crossing existing roads or highways.

[0003] In existing technologies, relevant patent documents have improved bridge deck prefabrication molds. For example, Chinese utility model patent CN219987958U discloses a combined bridge deck prefabrication mold. This mold, through the combination of a platform, a bottom mold, a first prefabricated component, a second prefabricated component, and connectors, achieves the prefabrication of bridge decks, offering advantages in terms of control panel dimensional accuracy and reserved rebar positions. However, its bottom mold and platform are still fixedly connected, failing to solve the problem of early transportation of prefabricated slabs. The platform turnover efficiency is low, which cannot meet the high-efficiency construction requirements of projects with limited space.

[0004] Therefore, in view of the problems of low turnover efficiency and poor site adaptability of prefabrication devices in the existing technology, there is an urgent need for a new type of prefabricated bridge deck construction technology that can ensure the flatness and dimensional accuracy of the prefabricated slabs while enabling rapid transfer of prefabricated slabs and reuse of pedestals, so as to improve construction efficiency and adapt to complex site conditions. Utility Model Content

[0005] This utility model proposes a prefabrication device for steel beam precast bridge decks, which solves the problems of low turnover efficiency and poor site adaptability of prefabrication devices in the prior art.

[0006] The technical solution of this utility model is implemented as follows:

[0007] A prefabrication device for steel beam precast bridge decks includes a platform, a bottom formwork, and side formwork. The platform is equipped with anchor bolts for fixing the bottom formwork, which is detachably mounted on the anchor bolts. The side formwork is connected to the bottom formwork, forming a rectangular cavity on the bottom formwork for casting the precast slab. The bottom formwork is equipped with support brackets for supporting and fixing the side formwork, located outside the rectangular cavity. The bottom formwork is detachably mounted to the platform via anchor bolts. After the concrete has initially set, the side formwork can be removed, and the bottom formwork can be separated from the platform, allowing the bottom formwork to be transported together with the precast slab. The platform and side formwork can be quickly reused, solving the problem of slow turnover caused by the fixed bottom formwork in traditional devices.

[0008] The pedestal includes several parallel distribution beams, which are fixedly connected by reinforcing bars to form an integral frame. Anchor bolts are welded to the distribution beams. The distribution beams are I-beams, and the reinforcing bars are threaded steel bars. The distribution beams are welded to the reinforcing bars. The parallel arrangement of the distribution beams facilitates the easy insertion of forklift forks into the bottom of the bottom formwork during subsequent transfer of the bottom formwork and precast slabs.

[0009] The anchor bolts are equipped with leveling nuts and fixing nuts. The leveling nuts are located on the lower side of the bottom template, and the fixing nuts are located on the upper side of the bottom template. The support height of the bottom template is adjusted by rotating the leveling nuts, thereby achieving leveling of the bottom template. After the bottom template is leveled, the fixing nuts are rotated to lock and fix the bottom template.

[0010] The distribution beam has connecting steel bars at both ends, which are connected to the lower part of the end face of the distribution beam. The connecting steel bars located at the lower part of the distribution beam can avoid the upper part of the I-beam, making it convenient for the forklift forks to reach under the bottom formwork when transporting the bottom formwork and precast slabs using forklifts, thus facilitating the transfer of the bottom formwork and precast slabs.

[0011] An L-shaped connecting plate is connected to the outer side of the side formwork. The vertical part of the L-shaped connecting plate is welded to the side formwork, and the horizontal part of the L-shaped connecting plate is bolted to the bottom formwork. The L-shaped connecting plate is used to fix the side formwork on the bottom formwork, ensuring the stability of the side formwork installation.

[0012] The support bracket includes a support frame with an opening on its side. Inside the support frame is a sliding pressure block with an inclined support rod extending out of the support frame and abutting against the outer wall of the side template. The top of the support frame has a threaded connection seat with a locking bolt threaded onto it. The end of the locking bolt extends into the support frame and is rotatably connected to the pressure block. During installation, the bottom template is inserted from the opening in the support frame between the bottom of the support frame and the pressure block. The position of the support bracket is adjusted so that the end of the support rod abuts against the outer wall of the side template. The locking bolt is then tightened, clamping the bottom template between the support frame and the pressure block, thus fixing the support bracket to the bottom template and supporting the side template.

[0013] The support frame is provided with a sliding groove through which the support rod passes. When the pressure block moves up and down within the support frame, the support rod can slide within the sliding groove, avoiding interference.

[0014] The end of the support rod is connected to a support plate, which is arranged vertically. The support plate fits against the outer wall of the side template, and the support plate increases the support area of ​​the support rod on the side template, thereby improving the support stability of the support rod on the side template.

[0015] The lower side of the pressure block is provided with a guide slope, which corresponds to the opening position of the support frame. When the side of the bottom template is inserted between the support frame and the pressure block, the guide slope has a guiding function, which facilitates the quick insertion of the bottom template and realizes the quick connection between the support bracket and the bottom template.

[0016] At least two bottom formwork templates can be installed simultaneously on the pedestal, and each bottom formwork template is equipped with corresponding side formwork templates and support brackets. The installation of multiple bottom formwork templates allows for the simultaneous construction of multiple precast slabs, further improving production efficiency.

[0017] The beneficial effects of this utility model are:

[0018] 1. Improve turnover efficiency: The bottom formwork can be detached and installed using anchor bolts. After the concrete has initially set, it can be transported together with the precast slab. The platform and side formwork can be quickly reused, solving the problem of slow turnover caused by the fixed bottom formwork of traditional equipment.

[0019] 2. Stable side formwork support: The support bracket clamps and fixes the bottom formwork with adjustable pressure blocks and support rods. After fixing, the support bracket applies stable support force to the side formwork through the support rods. Combined with the double fixation of the L-shaped connecting plate, it effectively prevents the side formwork from deforming during pouring and ensures the dimensional accuracy of the cavity.

[0020] 3. Precise control of flatness: Anchor bolts, together with leveling nuts and fixing nuts, can precisely adjust the levelness of the bottom template to ensure that the flatness of the bottom surface of the precast slab meets the design requirements. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the prefabrication device for a precast steel beam bridge deck according to the present invention. Figure 1 ;

[0023] Figure 2 Schematic diagram of prefabricated device structure Figure 2 ;

[0024] Figure 3 Side views of the pedestal, bottom formwork, and side formwork used during prefabrication;

[0025] Figure 4 This is a schematic diagram showing the connection between the side template and the bottom template;

[0026] Figure 5 This is a schematic diagram of the support bracket structure.

[0027] In the diagram: 1. Distribution beam, 2. Connecting reinforcement, 3. Bottom formwork, 4. Side formwork, 5. L-shaped connecting plate, 6. Support bracket, 61. Support frame, 62. Pressure block, 63. Threaded connection seat, 64. Locking bolt, 65. Slide groove, 66. Support rod, 67. Support plate, 621. Guide slope. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1, as Figure 1 , Figure 2 , Figure 3As shown, a prefabrication device for steel beam precast bridge deck includes a platform, a bottom formwork 3, and side formwork 4. Anchor bolts for fixing the bottom formwork 3 are provided on the platform, and the bottom formwork 3 is detachably installed on the anchor bolts of the platform. The side formwork 4 is connected to the bottom formwork 3, and the side formwork 4 encloses the bottom formwork 3 to form a rectangular cavity for casting the precast slab. A support bracket 6 for supporting and fixing the side formwork 4 is provided on the bottom formwork 3, and the support bracket 6 is located on the outside of the rectangular cavity. The bottom formwork 3 is detachably installed to the platform via anchor bolts. During the prefabrication of the bridge deck, after the concrete has initially set, the side formwork 4 can be removed, and the bottom formwork 3 can be separated from the platform, allowing the bottom formwork 3 to be transported together with the precast slab. The platform and side formwork 4 can be quickly reused, solving the problem of slow turnover caused by the fixed bottom formwork in traditional devices.

[0030] Furthermore, the platform includes several parallelly arranged distribution beams 1, each distribution beam 1 being fixedly connected by connecting steel bars 2 to form an integral frame, with the anchor bolts welded to the distribution beams 1. The distribution beams 1 are made of I14 I-beams, and the connecting steel bars 2 are threaded steel bars, with the distribution beams 1 and connecting steel bars 2 welded together. Additionally, the parallel arrangement of the distribution beams 1 facilitates the smooth insertion of forklift forks into the bottom of the bottom formwork 3 during subsequent transfer of the bottom formwork 3 and the precast slab.

[0031] Furthermore, the anchor bolts are equipped with leveling nuts and fixing nuts. The leveling nuts are located on the lower side of the bottom template 3, and the fixing nuts are located on the upper side of the bottom template 3. The support height of the bottom template 3 is adjusted by rotating the leveling nuts, thereby achieving leveling of the bottom template 3. After the bottom template is leveled, the fixing nuts are rotated to lock and fix the bottom template.

[0032] Furthermore, connecting steel bars 2 are provided at both ends of the distribution beam 1, and the connecting steel bars 2 are connected to the lower part of the end face of the distribution beam 1. In this embodiment, as shown... Figure 2 As shown, a bottom template 3 is provided on the pedestal, and there are two connecting steel bars 2. The connecting steel bars 2 are welded to the lower flange of the end face of the I-beam. At this time, the connecting steel bars 2 are in contact with the ground, which facilitates the welding operation between the connecting steel bars 2 and the I-beam and reduces the welding difficulty. In addition, the connecting steel bars 2 in contact with the ground can avoid the upper part of the I-beam. When using a forklift to transport the bottom template 3 and the precast slab, it is convenient for the forklift forks to extend into the lower side of the bottom template 3, thereby facilitating the transfer of the bottom template 3 and the precast slab.

[0033] Furthermore, such as Figure 4 As shown, an L-shaped connecting plate 5 is connected to the outer side of the side template 4. The vertical part of the L-shaped connecting plate 5 is welded to the side template 4, and the horizontal part of the L-shaped connecting plate 5 is bolted to the bottom template 3. The L-shaped connecting plate 5 is used to fix the side template 4 on the bottom template 3, ensuring the stability of the side template 4.

[0034] Example 2, based on Example 1, provides a prefabrication device for precast steel beam bridge decks, such as... Figure 5 As shown, the support bracket 6 includes a support frame 61 with an opening on its side. Inside the support frame 61 is a sliding pressure block 62, and the pressure block 62 has an inclined support rod 66 that extends out of the support frame 61 and abuts against the outer wall of the side template 4. The top of the support frame 61 has a threaded connection seat 63, on which a locking bolt 64 is threaded. The end of the locking bolt 64 extends into the support frame 61 and is rotatably connected to the pressure block 62. During installation, the bottom template 3 is inserted from the opening of the support frame 61 between the bottom of the support frame 61 and the pressure block 62. The position of the support bracket 6 is adjusted so that the end of the support rod 66 abuts against the outer wall of the side template 4. At this point, the locking bolt 64 is tightened, clamping the bottom template 3 between the support frame 61 and the pressure block 62, thus fixing the support bracket 6 on the bottom template 6 and supporting the side template 3.

[0035] Furthermore, the support frame 61 is provided with a sliding groove 65, through which the support rod 66 passes. When the pressure block 63 moves up and down within the support frame 61, the support rod 66 can slide within the sliding groove 65, avoiding interference. The end of the support rod 66 is connected to a support plate 67, which is arranged vertically. The support plate 67 is in contact with the outer wall of the side template 4. The provision of the support plate 67 increases the support area of ​​the support rod 66 on the side template 4, improving the support stability of the support rod 66 on the side template 4.

[0036] Furthermore, a guide slope 621 is provided on the lower side of the pressure block 62, and the guide slope 621 corresponds to the opening position of the support frame 61. When the side of the bottom template 3 is inserted between the support frame 61 and the pressure block 62, the guide slope 621 has a guiding function, which facilitates the quick insertion of the bottom template 3 and realizes the quick connection between the support bracket 6 and the bottom template 3.

[0037] Furthermore, at least two bottom templates 3 can be installed simultaneously on the pedestal, and each bottom template 3 is correspondingly provided with a side template 4 and a support bracket 6. In this embodiment, as shown... Figure 1 As shown, the platform is provided with four bottom templates 3 and three connecting steel bars 2. Two of the connecting steel bars 2 are located at both ends of the I-beam, and the other connecting steel bar is located in the middle of the I-beam. The connecting steel bar 2 is welded to the upper flange of the middle position of the I-beam.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A prefabrication device for precast steel beam bridge decks, comprising a platform, a bottom formwork (3), and side formwork (4), characterized in that, Anchor bolts for fixing the bottom template (3) are provided on the pedestal. The bottom template (3) can be detachably installed on the anchor bolts of the pedestal. The side template (4) is connected to the bottom template (3). The side template (4) surrounds the bottom template (3) to form a rectangular cavity for casting precast slabs. The bottom template (3) is provided with a support bracket (6) for supporting and fixing the side template (4). The support bracket (6) is located on the outside of the rectangular cavity.

2. The prefabrication device for precast steel beam bridge decks according to claim 1, characterized in that, The platform includes several parallel distribution beams (1), and each distribution beam (1) is fixedly connected by connecting steel bars (2) to form an integral frame. The anchor bolts are welded to the distribution beams (1).

3. The prefabrication device for precast steel beam bridge decks according to claim 2, characterized in that, The anchor bolts are connected to a leveling nut and a fixing nut. The leveling nut is located on the lower side of the bottom template (3), and the fixing nut is located on the upper side of the bottom template (3).

4. The prefabrication device for precast steel beam bridge decks according to claim 2 or 3, characterized in that, The distribution beam (1) is provided with connecting steel bars (2) at both ends, and the connecting steel bars (2) are connected to the lower part of the end face of the distribution beam (1).

5. The prefabrication device for precast steel beam bridge decks according to claim 4, characterized in that, An L-shaped connecting plate (5) is connected to the outside of the side template (4). The vertical part of the L-shaped connecting plate (5) is welded to the side template (4), and the horizontal part of the L-shaped connecting plate (5) is connected to the bottom template (3) by bolts.

6. The prefabrication device for precast steel beam bridge decks according to claim 1 or 5, characterized in that, The support bracket (6) includes a support frame (61), the side of the support frame (61) is provided with an opening, the support frame (61) is provided with a sliding pressure block (62), the pressure block (62) is provided with an inclined support rod (66), the support rod (66) extends out of the support frame (61) and abuts against the outer side wall of the side template (4); the top of the support frame (61) is provided with a threaded connection seat (63), the threaded connection seat (63) is threaded with a locking bolt (64), the end of the locking bolt (64) extends into the support frame (61) and is rotatably connected to the pressure block (62).

7. The prefabrication device for precast steel beam bridge decks according to claim 6, characterized in that, The support frame (61) is provided with a groove (65), and the support rod (66) passes through the groove (65).

8. The prefabrication device for precast steel beam bridge decks according to claim 7, characterized in that, The end of the support rod (66) is connected to the support plate (67), which is arranged vertically.

9. The prefabrication device for precast steel beam bridge decks according to claim 8, characterized in that, The lower side of the pressure block (62) is provided with a guide slope (621), which corresponds to the opening position of the support frame (61).

10. The prefabrication device for precast steel beam bridge decks according to claim 1 or 9, characterized in that, At least two bottom templates (3) can be installed on the pedestal at the same time, and each bottom template (3) is provided with a side template (4) and a support bracket (6).

Images