Supporting device for erecting small-radius prefabricated box girder

Abstract

The utility model relates to the technical field of bridge erection, in particular to a supporting device for erecting a small-radius prefabricated box girder, which comprises a box girder supporting unit arranged on a connecting table, the fixed end of the box girder supporting unit is detachably connected with the connecting table, and the supporting end of the box girder supporting unit extends to the side end of the connecting table; the box girder supporting units are arranged on the connecting table, in the actual construction operation process, the prefabricated box girders arranged on the side of the connecting table are supported through the box girder supporting units, overturning of the prefabricated box girders on the side is avoided, construction safety is guaranteed, and construction efficiency is improved.

Description

A support device for erecting small-radius precast box girders Technical Field

[0001] This utility model relates to the field of bridge erection technology, specifically to a support device for erecting small-radius precast box girders. Background Technology

[0002] During the bridge construction process, some bridge box girders are prefabricated in factories and then transported to the construction site for installation and fixation according to the design requirements. Prefabricated beams have been widely used in the current road and bridge construction in my country.

[0003] Small-radius box girders are widely used in highway bridges, especially in urban interchanges. Currently, the erection of small-radius precast box girders is difficult due to their small radius and large curvature.

[0004] For example, Chinese invention patent application number 202110426931.8 provides a small-radius box girder bridge structure and its construction method. The precast box girder includes a middle beam and side beams. The connecting steel plate is welded to the skeleton steel bars of the middle beam or side beam through connecting steel bars. However, there is still a problem of unstable connection of the side beams. If the box girders on the left and right sides of the connecting platform are not supported, there is a risk of box girder overturning, which affects construction safety. Summary of the Invention

[0005] The purpose of this utility model is to provide a support device for erecting small-radius precast box girders, thereby solving the technical problem of overturning during the current erection of small-radius precast box girders.

[0006] The solution of this utility model to the above-mentioned technical problems is as follows:

[0007] A support device for erecting small-radius precast box girders includes a box girder support unit mounted on a connecting platform. The fixed end of the box girder support unit is detachably connected to the connecting platform, and the support end of the box girder support unit extends to the side end of the connecting platform.

[0008] Further specifying, the box girder support unit includes a lateral moving mechanism and a support mechanism. The fixed end of the lateral moving mechanism is detachably connected to the connecting platform, and the movable end of the lateral moving mechanism is connected to the fixed end of the support mechanism. The support end of the support mechanism is arranged along the longitudinal direction.

[0009] Further defining the lateral movement mechanism, it includes a first groove frame, a lateral fixing plate, and a lateral movement drive. The first groove frame is detachably connected to the connecting platform. The lateral fixing plate is arranged in a horizontal direction and has a lateral movement groove. The lateral movement groove is opened along the length direction of the lateral fixing plate. The fixed end of the support mechanism is slidably connected to the lateral movement groove through the lateral movement drive.

[0010] Further specifying, the lateral movement drive includes a lateral lead screw motor and a lateral movement lead screw;

[0011] The fixed end of the transverse lead screw motor is connected to the first groove frame, the output end of the transverse lead screw motor is connected to the transverse moving lead screw drive, the transverse moving lead screw is rotatably connected to the transverse moving groove along the length direction of the transverse moving groove, the support mechanism is slidably connected to the transverse moving groove, and the fixed end of the support mechanism is connected to the transverse moving lead screw drive.

[0012] Further specified, the first groove frame is connected to the connecting platform via a disassembly and connection mechanism; the disassembly and connection mechanism includes a clamping screw and a clamping plate, one end of the clamping screw passes through one end of the first groove frame and extends to the inner side of the first groove frame, one end of the clamping screw is connected to the clamping plate, the clamping plate is close to the connecting platform, and the other end of the clamping screw extends to the outer side of the first groove frame.

[0013] Further specified, the number of clamping screws and the number of clamping discs are both four, and the four clamping screws are arranged in an array, with each clamping screw corresponding to a clamping disc.

[0014] Furthermore, the box girder support unit also includes a vertical lifting mechanism; the vertical lifting mechanism includes a second groove frame, a vertical fixing plate, and a vertical lifting drive;

[0015] The horizontal moving lead screw is connected to the top of the vertical fixed plate through the second groove frame. The vertical fixed plate is perpendicular to the horizontal fixed plate and is slidably connected to the horizontal moving groove. A vertical lifting groove is provided on the vertical fixed plate. The vertical lifting groove is opened along the length direction of the vertical fixed plate. The fixed end of the support mechanism is slidably connected to the vertical lifting groove through the vertical lifting drive.

[0016] Further specifying, the vertical lifting drive includes a vertical lead screw motor and a vertical lifting lead screw. The vertical lifting lead screw is arranged along the length direction of the vertical lifting groove and is rotatably connected to the vertical fixed plate. The vertical lead screw motor is mounted on the vertical fixed plate and is drivenly connected to the vertical lifting lead screw. The fixed end of the support mechanism is drivenly connected to the vertical lifting lead screw.

[0017] Further specifying, the support mechanism includes a lifting connecting plate, a horizontal connecting plate, and an L-shaped support plate;

[0018] The lifting connecting plate is sleeved on the outside of the vertical lifting groove. The lifting connecting plate is connected to the vertical lifting screw. One end of the horizontal connecting plate is connected to the lifting connecting plate, and the other end of the horizontal connecting plate is connected to the L-shaped support plate. The L-shaped support plate faces the side of the connecting platform.

[0019] Furthermore, the number of box girder support units is two, and the two box girder support units are arranged on the left and right sides of the connecting platform.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. This utility model provides a box girder support unit on the connecting platform. During actual construction, the precast box girder located on the side of the connecting platform is supported by the box girder support unit, which prevents the precast box girder on the side from overturning, ensures construction safety, and improves construction efficiency.

[0022] 2. This utility model uses a horizontal moving mechanism and a vertical lifting mechanism to drive the support mechanism closer to the precast box girder on the side, which is used to reliably support the precast box girder. It is easy to adjust the support position and the height of each layer, so as to meet the support requirements of precast box girders of different specifications and has a wider range of applications. Attached Figure Description

[0023] Figure 1 is a structural diagram of the support device for erecting small-radius precast box girders of this utility model in the first direction.

[0024] Figure 2 is a structural diagram of the second direction of the support device for erecting small-radius precast box girders of this utility model.

[0025] Figure 3 is a third-dimensional structural diagram of the support device for erecting small-radius precast box girders of this utility model.

[0026] Figure 4 is a structural diagram of the support device for erecting small-radius precast box girders of this utility model in the fourth direction.

[0027] In the diagram, 100-precast box girder; 200-connecting platform; 300-pier column; 400-box girder support unit; 410-lateral movement mechanism; 411-first groove frame; 412-lateral fixing plate; 413-lateral movement screw; 414-lateral movement slot; 420-vertical lifting mechanism; 421-second groove frame; 422-vertical fixing plate; 423-vertical lifting screw; 424-vertical lifting slot; 430-support mechanism; 431-lifting connecting plate; 432-lateral connecting plate; 433-L-shaped support plate; 500-disassembly and connection mechanism; 510-clamping screw; 511-rotating handle; 520-clamping disc. 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, not all, of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] Example 1

[0030] Referring to Figures 1 to 4, this utility model provides a support device for erecting small-radius precast box girders, including a box girder support unit 400 disposed on a connecting platform 200. The fixed end of the box girder support unit 400 is detachably connected to the connecting platform 200, and the support end of the box girder support unit 400 extends to the side end of the connecting platform 200.

[0031] During construction, the connecting platform 200 is set on the pier column 300, and the precast box girder 100 is erected on the connecting platform 200. The precast box girder 100 located outside the connecting platform 200 is at risk of overturning. Therefore, box girder support units 400 are set on the left and right sides of the connecting platform 200 to support the side beams, prevent overturning, and ensure safe and reliable use. At this time, there are two box girder support units 400, and the two box girder support units 400 support the opposite side beams respectively.

[0032] To further explain, the box girder support unit 400 includes a lateral moving mechanism 410 and a support mechanism 430. The fixed end of the lateral moving mechanism 410 is detachably connected to the connecting platform 200, and the movable end of the lateral moving mechanism 410 is connected to the fixed end of the support mechanism 430. The support end of the support mechanism 430 is arranged in the longitudinal direction.

[0033] The lateral moving mechanism 410 is detachably connected to the connecting platform 200, which facilitates construction and installation and dismantling after construction. It is easy and simple to operate and improves work efficiency.

[0034] The lateral movement mechanism 410 is used to drive the support mechanism 430 to move along the length of the connecting platform 200, and to adjust the position of the support mechanism 430 to meet the support requirements of precast box girders 100 of different widths.

[0035] Specifically, the lateral movement mechanism 410 includes a first groove frame 411, a lateral fixing plate 412, and a lateral movement drive. The first groove frame 411 is detachably connected to the connecting platform 200. The lateral fixing plate 412 is arranged horizontally above the connecting platform 200. A lateral movement groove 414 is provided on the lateral fixing plate 412. The port of the lateral movement groove 414 faces downward and is opened along the length of the lateral fixing plate 412. The fixed end of the support mechanism 430 is slidably connected to the lateral movement groove 414 through the lateral movement drive, so that the support mechanism 430 can slide back and forth along the lateral movement groove 414 under the drive of the lateral movement drive.

[0036] The lateral movement drive includes a lateral lead screw motor and a lateral movement lead screw 413. The fixed end of the lateral lead screw motor is connected to the first groove frame 411, and the output end of the lateral lead screw motor is connected to the lateral movement lead screw 413. The lateral movement lead screw 413 is rotatably connected to the lateral movement groove 414 along its length. The support mechanism 430 is slidably connected to the lateral movement groove 414 to improve structural reliability. The fixed end of the support mechanism 430 is connected to the lateral movement lead screw 413, and the lateral movement lead screw 413 drives the support mechanism 430 to slide along the lateral movement groove 414.

[0037] Further explanation: the first groove frame 411 is connected to the connecting platform 200 via the disassembly and connection mechanism 500; both sides of the connecting platform 200 are provided with side plates; the disassembly and connection mechanism 500 includes a clamping screw 510 and a clamping plate 520; the first groove frame 411 is sleeved on the outside of the side plate; one end of the clamping screw 510 passes through one end of the first groove frame 411 and extends to the inside of the first groove frame 411; one end of the clamping screw 510 is connected to the clamping plate 520; the clamping plate 520 is close to the corresponding side plate; and the other end of the clamping screw 510 extends to the outside of the first groove frame 411.

[0038] By rotating the clamping screw 510, the clamping plate 520 is driven to approach or move away from the corresponding side plate, thereby realizing the connection and disassembly with the connecting table 200. The operation is convenient and simple. Preferably, in order to facilitate the rotation of the clamping screw 510, a rotating handle 511 is preferably provided at the other end of the clamping screw 510.

[0039] Optionally, the number of clamping screws 510 and the number of clamping disks 520 are both four, with the four clamping screws 510 arranged in an array, and the clamping screws 510 and the clamping disks 520 are set in a one-to-one correspondence.

[0040] To further explain, the box girder support unit 400 also includes a vertical lifting mechanism 420, which is connected between the support mechanism 430 and the lateral movement mechanism 410; the vertical lifting mechanism 420 includes a second groove frame 421, a vertical fixing plate 422 and a vertical lifting drive.

[0041] Specifically, the transverse moving screw 413 is connected to the top of the vertical fixed plate 422 through the second groove frame 421. The rotation of the transverse moving screw 413 can drive the vertical fixed plate 422 to move laterally along the transverse moving groove 414. The second groove frame 421 is used to limit the movement of the vertical fixed plate 422, that is, the top of the second groove frame 421 is slidably connected to the transverse fixed plate 412, and the bottom of the second groove frame 421 is connected to the vertical fixed plate 422.

[0042] The vertical fixing plate 422 is perpendicular to the horizontal fixing plate 412. A vertical lifting groove 424 is provided on the vertical fixing plate 422. The vertical lifting groove 424 is provided along the length of the vertical fixing plate 422. The fixed end of the support mechanism 430 is slidably connected to the vertical lifting groove 424. The vertical lifting groove 424 is also connected to the vertical lifting drive, so that the vertical lifting drive can drive the support mechanism 430 to move up and down along the vertical lifting groove 424 to adapt to the support requirements of precast box girders 100 of different thicknesses.

[0043] Specifically, the vertical lifting drive includes a vertical screw motor and a vertical lifting screw 423. The vertical lifting screw 423 is arranged along the length direction of the vertical lifting groove 424 and is rotatably connected to the vertical fixed plate 422. The vertical screw motor is mounted on the vertical fixed plate 422 and is drivenly connected to the vertical lifting screw 423. The fixed end of the support mechanism 430 is drivenly connected to the vertical lifting screw 423. The vertical screw motor drives the vertical lifting screw 423 to rotate, thereby driving the support mechanism 430 to move up and down reciprocally.

[0044] To further explain, the support mechanism 430 includes a lifting connecting plate 431, a horizontal connecting plate 432, and an L-shaped support plate 433. The lifting connecting plate 431 is sleeved on the outside of the vertical lifting groove 424 and is connected to the vertical lifting screw 423. One end of the horizontal connecting plate 432 is connected to the lifting connecting plate 431, and the other end of the horizontal connecting plate 432 is connected to the L-shaped support plate 433. The L-shaped support plate 433 faces the side of the connecting platform 200. During construction, the rotation of the vertical lifting screw 423 drives the lifting connecting plate 431 to move up and down along the vertical lifting groove 424. The lifting connecting plate 431, through the horizontal connecting plate 432, drives the L-shaped support plate 433 to move up and down for adjustment.

[0045] At the same time, the horizontal lead screw motor drives the horizontal moving lead screw 413 to rotate, thereby driving the vertical fixed plate 422 to move back and forth in the horizontal direction. This enables the L-shaped support plate 433 to be adjusted to contact the side end of the precast box girder 100 according to the thickness and width of the precast box girder 100 on the side of the connecting platform 200 for support, thus meeting the actual construction needs.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this utility model.

Claims

1. A support device for erecting small-radius precast box girders, characterized in that, It includes a box girder support unit (400) set on the connecting platform (200), the fixed end of the box girder support unit (400) being detachably connected to the connecting platform (200), and the support end of the box girder support unit (400) extending to the side end of the connecting platform (200).

2. The support device for erecting small-radius precast box girders according to claim 1, characterized in that, The box girder support unit (400) includes a transverse moving mechanism (410) and a support mechanism (430). The fixed end of the transverse moving mechanism (410) is detachably connected to the connecting platform (200), and the movable end of the transverse moving mechanism (410) is connected to the fixed end of the support mechanism (430). The support end of the support mechanism (430) is set along the longitudinal direction.

3. The support device for erecting small-radius precast box girders according to claim 2, characterized in that, The lateral movement mechanism (410) includes a first groove frame (411), a lateral fixing plate (412), and a lateral movement drive. The first groove frame (411) is detachably connected to the connecting platform (200). The lateral fixing plate (412) is arranged in the horizontal direction. A lateral movement groove (414) is provided on the lateral fixing plate (412). The lateral movement groove (414) is opened along the length direction of the lateral fixing plate (412). The fixed end of the support mechanism (430) is slidably connected to the lateral movement groove (414) through the lateral movement drive.

4. The support device for erecting small-radius precast box girders according to claim 3, characterized in that, The lateral movement drive includes a lateral lead screw motor and a lateral movement lead screw (413); the fixed end of the lateral lead screw motor is connected to the first groove frame (411), the output end of the lateral lead screw motor is connected to the lateral movement lead screw (413) in a transmission connection, the lateral movement lead screw (413) is rotatably connected to the lateral movement groove (414) along the length direction of the lateral movement groove (414), the support mechanism (430) is slidably connected to the lateral movement groove (414), and the fixed end of the support mechanism (430) is connected to the lateral movement lead screw (413) in a transmission connection.

5. The support device for erecting small-radius precast box girders according to claim 4, characterized in that, The first groove frame (411) is connected to the connecting platform (200) via a disassembly and connection mechanism (500); the disassembly and connection mechanism (500) includes a clamping screw (510) and a clamping plate (520). One end of the clamping screw (510) passes through one end of the first groove frame (411) and extends to the inner side of the first groove frame (411). One end of the clamping screw (510) is connected to the clamping plate (520), which is close to the connecting platform (200). The other end of the clamping screw (510) extends to the outer side of the first groove frame (411).

6. The support device for erecting small-radius precast box girders according to claim 5, characterized in that, The number of clamping screws (510) and the number of clamping discs (520) are both four. The four clamping screws (510) are arranged in an array, and the clamping screws (510) and the clamping discs (520) are set in a one-to-one correspondence.

7. The support device for erecting small-radius precast box girders according to claim 6, characterized in that, The box girder support unit (400) further includes a vertical lifting mechanism (420); the vertical lifting mechanism (420) includes a second groove frame (421), a vertical fixing plate (422) and a vertical lifting drive; the transverse moving screw (413) is connected to the top of the vertical fixing plate (422) through the second groove frame (421), the vertical fixing plate (422) is perpendicular to the transverse fixing plate (412), and the vertical fixing plate (422) is slidably connected to the transverse moving groove (414); a vertical lifting groove (424) is provided on the vertical fixing plate (422), the vertical lifting groove (424) is opened along the length direction of the vertical fixing plate (422), and the fixed end of the support mechanism (430) is slidably connected to the vertical lifting groove (424) through the vertical lifting drive.

8. The support device for erecting small-radius precast box girders according to claim 7, characterized in that, The vertical lifting drive includes a vertical screw motor and a vertical lifting screw (423). The vertical lifting screw (423) is arranged along the length direction of the vertical lifting groove (424). The vertical lifting screw (423) is rotatably connected to the vertical fixed plate (422). The vertical screw motor is arranged on the vertical fixed plate (422) and is connected to the vertical lifting screw (423) in a transmission manner. The fixed end of the support mechanism (430) is connected to the vertical lifting screw (423) in a transmission manner.

9. The support device for erecting small-radius precast box girders according to claim 8, characterized in that, The support mechanism (430) includes a lifting connecting plate (431), a horizontal connecting plate (432), and an L-shaped support plate (433). The lifting connecting plate (431) is sleeved on the outside of the vertical lifting groove (424). The lifting connecting plate (431) is connected to the vertical lifting screw (423). One end of the horizontal connecting plate (432) is connected to the lifting connecting plate (431), and the other end of the horizontal connecting plate (432) is connected to the L-shaped support plate (433). The L-shaped support plate (433) faces the side of the connecting platform (200).

10. The support device for erecting small-radius precast box girders according to any one of claims 1 to 9, characterized in that, The number of box girder support units (400) is two, and the two box girder support units (400) are arranged on the left and right sides of the connecting platform (200).

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