Movable lifting steel pedestal for box girder prefabrication

Abstract

The utility model relates to the field of assembly type buildings, in particular to a box girder prefabrication movable type lifting steel pedestal which comprises a reinforced concrete fixed formwork table, a mounting area is arranged on one side of the reinforced concrete fixed formwork table, and a main formwork is mounted at the top of the reinforced concrete fixed formwork table; when the height of the height adjusting mechanism is adjusted, a servo motor works to drive two-way screws to rotate, the two two-way screws are in transmission connection with a transmission belt through belt wheels to drive two first wedge-shaped blocks to synchronously move inwards, a second wedge-shaped block and an auxiliary mold plate on the top of the second wedge-shaped block are jacked, and the two first wedge-shaped blocks and the auxiliary mold plate on the top of the second wedge-shaped block are separated from each other. And when the height needs to be reduced, the servo motor rotates reversely to finish the reduction, so that the auxiliary template can be automatically adjusted, the labor intensity of workers is greatly reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of assembled buildings, in particular to a prefabricated movable liftable steel pedestal for box beams. Background Art

[0002] Prefabricated buildings refer to buildings in which some or all of the components are prefabricated in factories, then transported to the construction site, and assembled by reliable connection methods. Among them, prefabricated box girders are generally used in bridges; prefabricated box girders are prefabricated bending members that are prestressed by tensioning prestressed steel bars, and then transported to the construction site for installation. The prefabricated box girder pedestal is the basic platform in the production process of prefabricated box girders, which is used to support the entire weight of the unformed box girder and ensure that the box girder is in a horizontal position during the forming process, so that the box girder has uniform mechanical strength after forming;

[0003] After searching, it is found that the authorization announcement number is: CN218227177U, which is a prefabricated box girder pedestal. Although the pedestal has the advantages of protecting the ends of the prefabricated box girder from being broken by tension and ensuring the production quality of the prefabricated box girder, the device uses adjusting screws and nuts to adjust the height of the liftable mold platform. Although it can reduce costs, workers are required to frequently turn several screws during adjustment, which not only has low operating efficiency but also high labor intensity. In the long run, the cost has not been reduced.

[0004] Therefore, a prefabricated movable liftable steel pedestal for box beams is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a prefabricated movable liftable steel pedestal for box beams in order to solve the above-mentioned problems, thereby improving the problem that workers need to frequently turn several screws during adjustment, which not only has low operating efficiency but also high labor intensity and does not reduce costs in the long run.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: a prefabricated movable and liftable steel pedestal for box beams, comprising: a reinforced concrete fixed formwork platform, a mounting area is arranged on one side of the reinforced concrete fixed formwork platform, a main formwork is installed on the top of the reinforced concrete fixed formwork platform; a height adjustment mechanism, the height adjustment mechanism is installed inside the mounting area and can support the prefabricated box beam; wherein, the height adjustment mechanism comprises a support platform installed inside the mounting area, a mounting groove is provided inside the support platform, a plurality of mounting cavities are provided on the top of the support platform, a sub-formwork is arranged on the top of the support platform, and an adjustment component for adjusting the height of the sub-formwork is installed through the inside of the support platform.

[0007] Preferably, the adjustment assembly includes four first wedge blocks slidably installed inside the mounting groove, second wedge blocks are fixedly installed on both sides of the bottom of the auxiliary template, the bottoms of the two second wedge blocks pass through the mounting groove and are slidably connected to the mounting groove, two bidirectional screws are installed through the inside of the first wedge block, and the bidirectional screws are threadedly connected to the first wedge block, wherein one end of one of the bidirectional screws passes through the first wedge block and extends to the outside of the first wedge block, a servo motor is installed on one side inside the mounting area, and the output end of the servo motor is fixedly connected to one end of the bidirectional screw.

[0008] Preferably, pulleys are fixedly mounted on the surfaces of the two bidirectional screws, a transmission belt is wound around the surface of the pulley, and the two pulleys are connected via the transmission belt.

[0009] Preferably, a sliding seat is slidably installed in the inner cavity of several of the installation cavities, a spring is fixedly installed at the bottom end of the sliding seat, the bottom end of the spring is fixedly connected to the inner wall of the installation cavity, a vertical rod is fixedly installed at the top end of the sliding seat, and the top end of the vertical rod is fixedly connected to the bottom of the auxiliary template.

[0010] Preferably, a support plate is fixedly installed at the bottom of the inner cavity of the installation groove, and the support plate is sleeved on the surface of the bidirectional screw and is rotatably connected through a bearing.

[0011] Preferably, a hoisting gap is separated between the reinforced concrete fixed formwork platform and the support platform, and a movable formwork is arranged on the top of the hoisting gap.

[0012] Preferably, a slide groove is provided at the bottom of the inner cavity of the installation groove, a slide rail is fixedly installed at the bottom of the first wedge-shaped block, and the slide rail is slidably connected to the slide groove.

[0013] The beneficial effects of the utility model are:

[0014] 1. When adjusting the height of the height adjustment mechanism, the servo motor drives the bidirectional screw to rotate, and the two bidirectional screws are connected by the pulley and the transmission belt, driving the two first wedge blocks to move inward synchronously, lifting the second wedge block and the auxiliary formwork on its top to keep it flush with the reinforced concrete fixed formwork platform. When the height needs to be lowered, the servo motor reverses to complete the lowering, which plays a role in automatically adjusting the auxiliary formwork, greatly reducing the labor intensity of workers and improving work efficiency;

[0015] 2. Height adjustment mechanisms are designed at both ends of the reinforced concrete fixed formwork. When producing prefabricated box girders, the height of the height adjustment mechanism can be adjusted to be flush with the reinforced concrete fixed formwork before pouring the prefabricated box girder concrete. After the concrete reaches a certain strength, before tensioning, the height of the height adjustment mechanism is adjusted to be lower than the bottom of the reinforced concrete fixed formwork. In this way, when tensioning, the separation of the end of the prefabricated box girder from the height adjustment mechanism avoids the problem of the end of the box girder being broken due to tensioning, thereby ensuring the production quality of the prefabricated box girder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the installation slot structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the adjustment component of the utility model;

[0019] Figure 4 It is a partial structural schematic diagram of the adjustment component of the utility model.

[0020] In the figure: 10, reinforced concrete fixed formwork; 11, installation area; 12, main formwork; 20, height adjustment mechanism; 21, support platform; 22, installation groove; 23, installation cavity; 24, auxiliary formwork; 25, adjustment assembly; 251, first wedge block; 252, second wedge block; 253, bidirectional screw; 254, servo motor; 255, pulley; 256, transmission belt; 257, slide; 258, spring; 259, vertical rod; 2501, support plate; 26, lifting gap; 27, movable formwork. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] When implementing: Figure 1-4As shown, a prefabricated movable liftable steel pedestal for box beams comprises: a reinforced concrete fixed formwork platform 10, a mounting area 11 is arranged on one side of the reinforced concrete fixed formwork platform 10, a main formwork 12 is installed on the top of the reinforced concrete fixed formwork platform 10; a height adjustment mechanism 20, the height adjustment mechanism 20 is installed inside the mounting area 11 and can support the prefabricated box beam; wherein the height adjustment mechanism 20 comprises a support platform 21 installed inside the mounting area 11, a mounting groove 22 is provided inside the support platform 21, a plurality of mounting cavities 23 are provided on the top of the support platform 21, a sub-formwork 24 is provided on the top of the support platform 21, and an adjustment component 25 for adjusting the height of the sub-formwork 24 is installed through the inside of the support platform 21;

[0023] In this embodiment, when producing prefabricated box girders, the height of the height adjustment mechanism 20 can be adjusted to be flush with the reinforced concrete fixed formwork 10, and then the prefabricated box girder concrete is poured. After the concrete reaches a certain strength, before tensioning, the height of the height adjustment mechanism 20 is adjusted to be lower than the bottom of the reinforced concrete fixed formwork 10. In this way, when tensioning is performed, the separation of the end of the prefabricated box girder from the height adjustment mechanism 20 can prevent the end of the box girder from being broken by the tensioning.

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the adjustment assembly 25 includes four first wedge blocks 251 slidably installed inside the installation groove 22, and second wedge blocks 252 are fixedly installed on both sides of the bottom of the auxiliary template 24. The bottoms of the two second wedge blocks 252 penetrate the installation groove 22 and are slidably connected to the installation groove 22. Two bidirectional screws 253 are installed inside the first wedge block 251, and the bidirectional screws 253 are threadedly connected to the first wedge block 251, wherein one end of a bidirectional screw 253 penetrates the first wedge block 251 and extends to the outside of the first wedge block 251. A servo motor 254 is installed on one side inside the installation area 11, and the output end of the servo motor 254 is fixedly connected to one end of the bidirectional screw 253; pulleys 255 are fixedly installed on the surfaces of the two bidirectional screws 253, and a transmission belt 256 is wound around the surface of the pulley 255, and the two pulleys 255 are connected through the transmission belt 256.

[0025] In this embodiment, the servo motor 254 drives the bidirectional screw 253 to rotate, and the two bidirectional screws 253 are connected by a pulley 255 and a transmission belt 256, driving the two first wedge blocks 251 to move inward synchronously, and the second wedge block 252 and the auxiliary template 24 on the top thereof are lifted up to be flush with the reinforced concrete fixed template 10. When the height needs to be lowered, the servo motor 254 is reversed to complete the lowering;

[0026] In this embodiment, a slide 257 is slidably installed in the inner cavity of the plurality of installation cavities 23, a spring 258 is fixedly installed at the bottom end of the slide 257, the bottom end of the spring 258 is fixedly connected to the inner wall of the installation cavity 23, a vertical rod 259 is fixedly installed at the top end of the slide 257, and the top end of the vertical rod 259 is fixedly connected to the bottom of the auxiliary template 24; the second wedge block 252 and the auxiliary template 24 can be elastically supported, while preventing the auxiliary template 24 from falling and colliding with the support platform 21, so as to facilitate the servo The service motor 254 adjusts the height of the auxiliary template 24; a support plate 2501 is fixedly installed at the bottom of the inner cavity of the installation groove 22, and the support plate 2501 is sleeved on the surface of the bidirectional screw 253 and is rotatably connected through a bearing; a lifting gap 26 is separated between the reinforced concrete fixed formwork 10 and the support platform 21, and a movable template 27 is arranged at the top of the lifting gap 26; a slide groove is opened at the bottom of the inner cavity of the installation groove 22, and a slide rail is fixedly installed at the bottom of the first wedge block 251, and the slide rail and the slide groove are slidably connected.

[0027] When the prefabricated box beam is produced, the height adjustment mechanism 20 of the utility model can adjust the height of the height adjustment mechanism 20 to be flush with the reinforced concrete fixed formwork 10 during the production of the prefabricated box beam, and then the prefabricated box beam concrete is poured. After the concrete reaches a certain strength, before tensioning, the height of the height adjustment mechanism 20 is adjusted to be lower than the bottom of the reinforced concrete fixed formwork 10. In this way, during tensioning, the end of the box beam is prevented from being broken by the tensioning due to the separation of the end of the prefabricated box beam and the height adjustment mechanism 20; and when the height of the height adjustment mechanism 20 is adjusted, the servo motor 254 drives the bidirectional screw rod 253 to rotate, and the two bidirectional screw rods 253 are connected by the pulley 255 and the transmission belt 256, driving the two first wedge blocks 251 to run inward synchronously, and the second wedge block 252 and the auxiliary formwork 24 on its top are lifted up to be flush with the reinforced concrete fixed formwork 10. When the height needs to be lowered, the servo motor 254 is reversed to complete the lowering.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A prefabricated movable liftable steel pedestal for box beams, characterized in that: include: A reinforced concrete fixed formwork platform (10), wherein a mounting area (11) is provided on one side of the reinforced concrete fixed formwork platform (10), and a main formwork (12) is installed on the top of the reinforced concrete fixed formwork platform (10); A height adjustment mechanism (20), wherein the height adjustment mechanism (20) is installed inside the installation area (11) and can support the prefabricated box beam; The height adjustment mechanism (20) comprises a support platform (21) installed inside the installation area (11), a mounting groove (22) is provided inside the support platform (21), a plurality of mounting cavities (23) are provided on the top of the support platform (21), a sub-template (24) is provided on the top of the support platform (21), and an adjustment component (25) for adjusting the height of the sub-template (24) is installed through the inside of the support platform (21).

2. The prefabricated movable liftable steel pedestal for box beams according to claim 1, characterized in that: The adjustment assembly (25) includes four first wedge blocks (251) slidably installed inside the mounting groove (22), and second wedge blocks (252) are fixedly installed on both sides of the bottom of the auxiliary template (24), and the bottoms of the two second wedge blocks (252) pass through the mounting groove (22) and are slidably connected to the mounting groove (22), and two bidirectional screws (253) are installed inside the first wedge block (251), and the bidirectional screws (253) are threadedly connected to the first wedge block (251), wherein one end of one of the bidirectional screws (253) passes through the first wedge block (251) and extends to the outside of the first wedge block (251), and a servo motor (254) is installed on one side inside the mounting area (11), and the output end of the servo motor (254) is fixedly connected to one end of the bidirectional screw (253).

3. The prefabricated movable liftable steel pedestal for box beams according to claim 2, characterized in that: A pulley (255) is fixedly mounted on the surface of the two bidirectional screw rods (253), a transmission belt (256) is wound around the surface of the pulley (255), and the two pulleys (255) are connected by transmission through the transmission belt (256).

4. The prefabricated movable liftable steel pedestal for box beams according to claim 1, characterized in that: A sliding seat (257) is slidably installed in the inner cavity of the installation cavity (23), a spring (258) is fixedly installed at the bottom end of the sliding seat (257), the bottom end of the spring (258) is fixedly connected to the inner wall of the installation cavity (23), and a vertical rod (259) is fixedly installed at the top end of the sliding seat (257), and the top end of the vertical rod (259) is fixedly connected to the bottom of the auxiliary template (24).

5. The prefabricated movable liftable steel pedestal for box beams according to claim 2, characterized in that: A support plate (2501) is fixedly mounted at the bottom of the inner cavity of the mounting groove (22); the support plate (2501) is sleeved on the surface of the bidirectional screw rod (253) and is rotatably connected via a bearing.

6. The prefabricated movable liftable steel pedestal for box beams according to claim 1, characterized in that: A hoisting gap (26) is defined between the reinforced concrete fixed formwork platform (10) and the support platform (21), and a movable formwork (27) is provided at the top of the hoisting gap (26).

7. The prefabricated movable liftable steel pedestal for box beams according to claim 2, characterized in that: A slide groove is provided at the bottom of the inner cavity of the installation groove (22), and a slide rail is fixedly installed at the bottom of the first wedge-shaped block (251), and the slide rail is slidably connected to the slide groove.

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