Crane for mounting bridge steel box girder

Abstract

The utility model discloses a crane for installing a bridge steel box girder, and relates to the technical field of bridge construction. The crane for installing the bridge steel box girder is composed of the steel box girder, supporting legs, universal wheels, a translation mechanism, a rotating mechanism and a beam hanging mechanism. The translation mechanism is arranged at the top ends of the supporting legs and used for moving the steel box girder; the rotating mechanism is arranged at the top end of the translation mechanism and used for adjusting the direction of the steel box girder; and the beam lifting mechanism is arranged at the top end of the rotating mechanism and used for lifting the steel box beam. The driving motor drives the threaded rod to rotate, the threaded rod drives the rotating box to move through the moving seat in the rotating process, the rotating motor on the inner side of the rotating box drives the driving wheel to rotate through the rotating rod, the driving wheel drives the rotating column to rotate through the driven wheel in the rotating process, and therefore the position of the hanging beam mechanism is adjusted. And the requirement for installation of bridges with different bending degrees is met, the steel box girder can be conveniently adjusted, and bridge installation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a crane for installing steel box girders of bridges. Background Technique

[0002] The steel box girder, also called a steel plate box girder, is a common structural form for long-span bridges. It is generally used in bridges with larger spans. Because its appearance is like a box, it is called a steel box girder. In long-span cable-supported bridges, the span of the steel box main girder reaches several hundred meters or even more than a thousand meters. It is generally manufactured and installed in several beam segments. Its cross-section has the characteristics of a wide width and a flat shape, and the height-width ratio reaches about 1:10. At present, the existing installation methods of steel box girders mostly use cranes to lift the steel box girders by steel wires for installation.

[0003] For example, a deck crane for installing a steel box girder of a bridge with the patent publication number of CN210393502U. After the oil cylinder is normally started, it can prompt the connecting seat to drive the supporting seat to move downward to the front and rear sides of the steel box girder. After the motor is normally started, it can prompt the screw rod to rotate. Through the screw rod, the rectangular block drives the supporting seat and the rubber pad to move inward and contact the steel box girder. Through the oil cylinder, the connecting seat pulls the supporting seat and the rubber pad to move upward and contact the left and right sides of the steel box girder, prompting the supporting seat to pull the steel box girder upward. When the steel box girder moves upward to be flush with the right side of the bridge, after the hydraulic pump is normally started, it pulls the connecting plate, the oil cylinder, the connecting seat, the supporting seat and the steel box girder to move to the left side to install the steel box girder.

[0004] Although the above equipment installs the steel box girder by pulling the connecting plate, the oil cylinder, the connecting seat, the supporting seat and the steel box girder to move to the left side through the hydraulic pump, the adjustable parts of this deck crane are less, which is inconvenient to use when dealing with some complex working conditions, and the applicability is poor. Moreover, it cannot adjust the installation position of the steel box girder. When facing a bridge with multiple bends, the device needs to be turned multiple times, and it is more cumbersome to use. Therefore, we propose a new crane for installing bridge boxes. Content of the Utility Model

[0005] The purpose of the utility model is to provide a crane for installing steel box girders of bridges to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A crane for installing steel box girders of bridges, including:

[0007] This crane for installing steel box girders of bridges is jointly composed of a steel box girder, support legs, universal wheels, a translation mechanism, a rotation mechanism, and a lifting beam mechanism;

[0008] The translation mechanism is arranged at the top of the support legs and is used to move the steel box girder;

[0009] The rotating mechanism is arranged at the top of the translation mechanism and is used to adjust the direction of the steel box girder;

[0010] The beam hanging mechanism is arranged at the top of the rotating mechanism and is used to lift the steel box girder.

[0011] As a specific solution in the technical solution of the present application, the translation mechanism includes:

[0012] A fixed box installed at the top of the support leg. One end of the fixed box is installed with a driving motor, the output end of the driving motor is connected with a threaded rod, the threaded rod is located inside the fixed box, a moving strip hole is arranged at the top of the fixed box, and a moving seat is installed on the outer wall of the threaded rod, and the moving seat is located inside the moving strip hole.

[0013] As a specific solution in the technical solution of the present application, the rotating mechanism includes:

[0014] A rotating box installed at the top of the fixed box. A rotating motor is installed at the bottom of the rotating box, the output end of the rotating motor is connected with a rotating rod, a fixed ring is installed on the outer wall of the rotating rod, a driving wheel is installed at the top of the fixed ring, the driving wheel is located on the outer wall of the top of the rotating rod, a base is installed at the top of the rotating box, and the top of the driving wheel coincides with the bottom of the base.

[0015] As a specific solution in the technical solution of the present application, the driving wheel is meshed with a driven wheel. A limiting plate is installed at the bottom of the driven wheel, a rotating column is installed at the top of the limiting plate, and gears are installed at the other three corners of the top of the rotating box. A limiting plate is installed at the bottom of the gear, a fixed column is installed inside the gear, the gear and the driving wheel are both meshed with the driven wheel, and the driven wheel is fixed at the bottom of the base under their common clamping.

[0016] As a specific solution in the technical solution of the present application, the beam hanging mechanism includes;

[0017] Fixing plates installed on both sides of the top of the base. A servo motor is installed at one end of the fixing plate, the output end of the servo motor is connected with a rotating rod, a wire winding cylinder is installed on the outer wall of the rotating rod, a steel strand is installed on the outer wall of the wire winding cylinder, and the steel strand is placed on the outer wall of a roller inside one end of the fixing frame. A groove is arranged in the middle of the outer wall of the roller to prevent the steel strand from running off.

[0018] As a specific solution in the technical solution of the present application, the other end of the fixing frame is installed on the top of the base through a clamping plate. A fixing bolt is installed inside the clamping plate, the roller is installed inside the fixing frame through the fixing bolt, a clamping plate is installed at one end of the fixing plate, a support rod is installed inside the clamping plate through the fixing bolt, and the other end of the support rod is installed on the outer wall of the fixing frame through a clamping plate.

[0019] As a specific solution in the technical solution of the present application, an inverted plumb bob is installed on the outer wall of one end of the steel strand. A support plate is installed at the bottom end of the inverted plumb bob. Threaded plates are installed on both sides of the bottom end of the support plate. A fixed screw is installed inside the threaded plate. A rotating member is installed on the outer wall of one end of the fixed screw, and a clamping member is installed at the other end through a fixing bolt. A steel box girder is installed inside the clamping member.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] For the crane for installing the steel box girder of the bridge, the driving motor drives the threaded rod to rotate. During the rotation of the threaded rod, the moving seat drives the rotating box to move. The rotating motor inside the rotating box drives the driving wheel to rotate through the rotating rod. During the rotation of the driving wheel, the driven wheel drives the rotating column to rotate, thereby adjusting the position of the hanging beam mechanism to meet the installation of bridges with different bending degrees, facilitating the adjustment of the steel box girder, making the bridge installation more convenient, and improving the utilization rate of the device.

[0022] At the same time, the servo motor drives the wire spool to rotate, thereby adjusting the steel strand, being able to change the installation height of the steel box girder and facilitating storage. By driving the distance between the clamping members at one end of the fixed screw through the rotating member, it can meet the installation of steel box girders with different widths, improving the compatibility of the device. Through the setting of the support plate of the fixed frame, the stability of the device during the installation of the steel box girder is ensured, and the utilization rate of the device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Isometric view of the present utility model;

[0024] Figure 2 Cross-sectional view of the translation mechanism of the present utility model;

[0025] Figure 3 Cross-sectional view of the rotating mechanism of the present utility model;

[0026] Figure 4 Schematic diagram of the hanging beam mechanism of the present utility model;

[0027] Figure 5 Cross-sectional view of the hanging beam mechanism of the present utility model.

[0028] In the figure: 1. Steel box girder; 2. Support leg; 3. Universal wheel; 4. Translation mechanism; 5. Rotation mechanism; 6. Beam hanging mechanism; 401. Driving motor; 402. Fixed box; 403. Moving seat; 404. Threaded rod; 405. Moving strip hole; 501. Rotating motor; 502. Limiting plate; 503. Base; 504. Driven wheel; 505. Rotating column; 506. Driving wheel; 507. Fixed ring; 508. Rotating rod; 509. Rotating box; 510. Gear; 601. Servo motor; 602. Steel strand; 603. Strand reel; 604. Fixed plate; 605. Support rod; 606. Clamp plate; 608. Fixed bolt; 609. Fixed frame; 610. Inverted plumb bob; 611. Fixed screw; 612. Clamping piece; 613. Support plate; 614. Rotating piece; 615. Threaded plate; 616. Roller. Detailed implementation mode

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0030] During the process of bridge construction, a bridge box is required. The crane provided by the present invention is specifically used for the installation operation of the bridge box. During the installation operation using this device, it is necessary to formulate a detailed installation plan and scheme in advance, clean and level the hoisting site, set appropriate lifting points on the bridge box according to the design requirements and installation plan of the bridge box to ensure the balance and stability of the box girder during hoisting, check the status and performance of the crane and the lifting tools to ensure their normal operation and safety and reliability, formulate and implement safety measures to ensure the safety of the work site, and all participants must wear personal protective equipment such as safety helmets and safety belts. Ensure effective communication among crane operators, commanders, site supervisors, etc. to ensure the safety and smooth progress during hoisting.

[0031] As Figures 1 - 5 shown, the present invention provides a technical solution: A crane for installing a bridge steel box girder, comprising:

[0032] The crane for installing the bridge steel box girder is jointly composed of a steel box girder 1, a support leg 2, a universal wheel 3, a translation mechanism 4, a rotation mechanism 5, and a beam hanging mechanism 6;

[0033] The translation mechanism 4 is arranged at the top of the support leg 2 and is used to move the steel box girder 1;

[0034] The rotating mechanism 5 is arranged at the top of the translation mechanism 4 and is used to adjust the direction of the steel box girder 1;

[0035] The beam hanging mechanism 6 is arranged at the top of the rotating mechanism 5 and is used to lift the steel box girder 1.

[0036] The translation mechanism 4 includes:

[0037] The fixed box 402 installed at the top of the support leg 2. One end of the fixed box 402 is installed with a driving motor 401. The output end of the driving motor 401 is connected with a threaded rod 404. The threaded rod 404 is located inside the fixed box 402. A moving strip hole 405 is arranged at the top of the fixed box 402. A moving seat 403 is installed on the outer wall of the threaded rod 404. The moving seat 403 is located inside the moving strip hole 405.

[0038] As Figure 2 shown, it should be noted that: the driving motor 401 drives the threaded rod 404 to rotate. During the rotation of the threaded rod 404, the moving seat 403 is driven to move on the moving strip hole 405. During the movement of the moving seat 403, the steel box girder 1 on the beam hanging mechanism 6 is driven to move through the rotating mechanism 5.

[0039] The rotating mechanism 5 includes:

[0040] The rotating box 509 installed at the top of the fixed box 402. The rotating motor 501 is installed at the bottom of the rotating box 509. The output end of the rotating motor 501 is connected with a rotating rod 508. A fixed ring 507 is installed on the outer wall of the rotating rod 508. A driving wheel 506 is installed at the top of the fixed ring 507. The driving wheel 506 is located on the outer wall of the top of the rotating rod 508. A base 503 is installed at the top of the rotating box 509. The top of the driving wheel 506 coincides with the bottom of the base 503.

[0041] The driving wheel 506 is meshed and connected with a driven wheel 504. A limiting plate 502 is installed at the bottom of the driven wheel 504. A rotating column 505 is installed at the top of the limiting plate 502. The other three corners at the top of the rotating box 509 are all installed with gears 510. The limiting plate 502 is installed at the bottom of the gears 510. A fixed column is installed inside the gears 510. Both the gears 510 and the driving wheel 506 are meshed and connected with the driven wheel 504, and the driven wheel 504 is fixed at the bottom of the base 503 under their common clamping.

[0042] As Figure 3As shown in the figure, it should be noted that: by rotating the motor 501 to drive the rotating rod 508 to rotate, the driving wheel 506 rotates during the rotation of the rotating rod 508. The fixed ring 507 is used to limit the downward sliding of the driving wheel 506. The driving wheel 506 rotates through the driven wheel 504 at the center during the rotation process. During the rotation of the driven wheel 504, the base 503 is driven to rotate through the rotating column 505, so as to adjust the installation direction of the steel box girder 1. During the rotation of the central driven wheel 504, the gears 510 around it are driven to rotate. Under the combined meshing rotation of the gear 510 and the driving wheel 506, the driven wheel 504 is fixed and will not slide down.

[0043] The hanging beam mechanism 6 includes;

[0044] The fixing plates 604 installed on both sides of the top end of the base 503. One end of the fixing plate 604 is installed with a servo motor 601. The output end of the servo motor 601 is connected with a rotating rod 508. A wire winding cylinder 603 is installed on the outer wall of the rotating rod 508. A steel strand 602 is installed on the outer wall of the wire winding cylinder 603. The steel strand 602 is placed on the outer wall of the roller 616 inside one end of the fixing frame 609. A groove is provided in the middle of the outer wall of the roller 616 to prevent the steel strand 602 from running off.

[0045] The other end of the fixing frame 609 is installed on the top end of the base 503 through a clamping plate 606. A fixing bolt 608 is installed inside the clamping plate 606. The roller 616 is installed inside the fixing frame 609 through the fixing bolt 608. One end of the fixing plate 604 is installed with a clamping plate 606. A support rod 605 is installed inside the clamping plate 606 through a fixing bolt 608. The other end of the support rod 605 is installed on the outer wall of the fixing frame 609 through a clamping plate 606.

[0046] One end of the outer wall of the steel strand 602 is installed with an inverted plumb bob 610. The bottom end of the inverted plumb bob 610 is installed with a support plate 613. Threaded plates 615 are installed on both sides of the bottom end of the support plate 613. A fixing screw 611 is installed inside the threaded plate 615. A rotating part 614 is installed on the outer wall of one end of the fixing screw 611, and a clamping part 612 is installed at the other end through a fixing bolt 608. The steel box girder 1 is installed inside the clamping part 612.

[0047] As Figure 4As shown, it should be noted that: the rotating rod 508 is driven to rotate by the servo motor 601. During the rotation of the rotating rod 508, the wire beam cylinder 603 is driven to rotate. During the rotation of the wire beam cylinder 603, the length of the steel strand 602 can be adjusted, thereby adjusting the height of the steel box girder 1. By setting the fixed frame 609 and the support rod 605, a certain initial height of the steel strand 602 can be ensured and fixed. The inverted plumb bob 610 provided at one end of the steel strand 602 can make the steel strand 602 vertically downward for the installation of the support plate 613. The support plate 613 is placed on the surface of the steel box girder 1, and the distance of the fixed screw 611 on one side of the threaded plate 615 is adjusted by rotating the rotating member 614, thereby adjusting the distance between the clamping members 612 to adapt to steel box girders 1 of different widths and fixing them so that they will not fall off.

[0048] In summary, through the cooperation setting among the translation mechanism 4, the rotation mechanism 5, and the lifting beam mechanism 6, the crane for installing the bridge steel box girder can drive the lifting beam mechanism 6 to move on the working surface, fix and lift the steel box girder 1 in the distance, adapt to steel box girders 1 of different widths, improve the compatibility of the device, and at the same time can adjust the installation direction of the steel box girder 1. When facing the curved part of the bridge, the operation is more convenient and there is no need to rotate the whole device, which improves the practicality of the device.

[0049] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended embodiments and their equivalents.

Claims

1. A crane for installing a bridge steel box girder, characterized in that: include: The crane for installing a steel box girder of a bridge is composed of a steel box girder (1), a support leg (2), a universal wheel (3), a translation mechanism (4), a rotation mechanism (5), and a beam hanging mechanism (6); A translation mechanism (4) is arranged on the top of the support leg (2) and is used to move the steel box girder (1); A rotating mechanism (5) is arranged on the top of the translation mechanism (4) and is used to adjust the direction of the steel box girder (1); The beam lifting mechanism (6) is arranged at the top of the rotating mechanism (5) and is used to lift the steel box beam (1).

2. A crane for installing a bridge steel box girder according to claim 1, characterized in that: The translation mechanism (4) comprises: A fixed box (402) is installed at the top of the supporting leg (2), a driving motor (401) is installed at one end of the fixed box (402), a threaded rod (404) is connected to the output end of the driving motor (401), the threaded rod (404) is located inside the fixed box (402), a moving bar hole (405) is provided at the top of the fixed box (402), a moving seat (403) is installed on the outer wall of the threaded rod (404), and the moving seat (403) is located inside the moving bar hole (405).

3. A crane for installing a bridge steel box girder according to claim 1, characterized in that: The rotating mechanism (5) comprises: A rotating box (509) is installed at the top of the fixed box (402), a rotating motor (501) is installed at the bottom of the rotating box (509), a rotating rod (508) is connected to the output end of the rotating motor (501), a fixing ring (507) is installed on the outer wall of the rotating rod (508), a driving wheel (506) is installed on the top of the fixing ring (507), and the driving wheel (506) is located on the outer wall of the top of the rotating rod (508), a base (503) is installed at the top of the rotating box (509), and the top of the driving wheel (506) overlaps with the bottom of the base (503).

4. A crane for installing a bridge steel box girder according to claim 3, characterized in that: The driving wheel (506) is meshedly connected with the driven wheel (504), a limit plate (502) is installed at the bottom of the driven wheel (504), a rotating column (505) is installed at the top of the limit plate (502), gears (510) are installed at the other three corners of the top of the rotating box (509), a limit plate (502) is installed at the bottom of the gear (510), a fixing column is installed inside the gear (510), the gear (510) and the driving wheel (506) are meshedly connected with the driven wheel (504), and the driven wheel (504) is fixed to the bottom of the base (503) under their common clamping.

5. The crane for installing a bridge steel box girder according to claim 1, characterized in that: The beam suspension mechanism (6) comprises: A fixing plate (604) is installed on both sides of the top of the base (503), a servo motor (601) is installed at one end of the fixing plate (604), the output end of the servo motor (601) is connected to a rotating rod (508), a cable barrel (603) is installed on the outer wall of the rotating rod (508), a steel strand (602) is installed on the outer wall of the cable barrel (603), the steel strand (602) is placed on the outer wall of a roller (616) on the inner side of one end of the fixing frame (609), and a groove is provided in the middle of the outer wall of the roller (616) to prevent the steel strand (602) from running off.

6. A crane for installing a bridge steel box girder according to claim 5, characterized in that: The other end of the fixing frame (609) is mounted on the top of the base (503) via a clamping plate (606), a fixing bolt (608) is mounted on the inner side of the clamping plate (606), the roller (616) is mounted on the inner side of the fixing frame (609) via the fixing bolt (608), one end of the fixing plate (604) is mounted with a clamping plate (606), the inner side of the clamping plate (606) is mounted with a supporting rod (605) via the fixing bolt (608), and the other end of the supporting rod (605) is mounted on the outer wall of the fixing frame (609) via the clamping plate (606).

7. A crane for installing a bridge steel box girder according to claim 5, characterized in that: An inverted plumb bob (610) is installed on the outer wall of one end of the steel strand (602), a support plate (613) is installed at the bottom end of the inverted plumb bob (610), threaded plates (615) are installed on both sides of the bottom end of the support plate (613), a fixing screw (611) is installed on the inner side of the threaded plate (615), a rotating part (614) is installed on the outer wall of one end of the fixing screw (611), and a clamp (612) is installed on the other end through a fixing bolt (608), and a steel box girder (1) is installed on the inner side of the clamp (612).

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