Steel box girder auxiliary positioning device and positioning method

Abstract

The application provides a steel box girder auxiliary positioning device and positioning method, the steel box girder auxiliary positioning device, including temporary support system, temporary support system has two parallel distribution beams, the end outside of distribution beam is detachably fixed with positioning mechanism, and the two positioning mechanisms on the same side of temporary support system are fixedly connected;In the application, the temporary support system is used to provide temporary support for the erection of the steel box girder, when the steel box girder is hoisted on the top of the temporary support system, the positioning slide rod in the positioning mechanism can play a sliding guide role for the steel box girder during the process of lowering the steel box girder, and the steel box girder is accurately positioned on the top of the temporary support system, without secondary adjustment, the convenience and safety of erection are improved;The position of the sliding block can be moved and adjusted through the screw rod, and the support rod is moved by the sliding block, the positioning slide rod is pushed and pulled during the movement of the support rod to match the angle of different steel box girder webs, and the application range is improved.

Description

Technical Field

[0001] This invention belongs to the field of steel box girder construction technology, specifically relating to an auxiliary positioning device and positioning method for steel box girders. Background Technology

[0002] Steel box girders are important steel structures used in bridges, bridge support frames, pier tops, pier bottoms, and other steel structures. They offer advantages such as high seismic strength, impact resistance, high resistance to water corrosion, light weight, and rapid construction. However, during the installation of steel box girders, low positioning accuracy can affect the function and structural safety of the bridge. Therefore, improving the positioning accuracy of steel box girder installation is a crucial issue.

[0003] In the prior art, such as the Chinese utility model patent document with authorization announcement number CN217870020U, a rapid positioning system for steel box girders is disclosed. It uses a hand-operated hoist and a jack to accurately position the steel box girder during the erection process. This erection method requires constant adjustment of the hand-operated hoist and jack, and the use of monitoring equipment to adjust the position of the steel box girder. The erection process is cumbersome, and there is a significant risk in lifting and adjusting the steel box girder for a long time.

[0004] Therefore, it is necessary to design an auxiliary positioning device and positioning method for steel box girders to improve the ease and safety of erection and solve the current technical problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an auxiliary positioning device and method for steel box girders that improves the ease and safety of erection.

[0006] The technical solution of the present invention is as follows: a steel box girder auxiliary positioning device, comprising a temporary support system, wherein the temporary support system has two parallel distribution beams, and a positioning mechanism is detachably and fixedly installed on the outer side of the end of the distribution beams, and the two positioning mechanisms located on the same side of the temporary support system are fixedly connected; the positioning mechanism has an installation sleeve detachably and fixedly fitted on the end of the distribution beam, and a positioning slide rod is hinged to the top of the top of the installation sleeve near the middle of the distribution beam, and a slider is slidably installed on the top of the installation sleeve along the extension direction of the distribution beam, and a support rod is hinged to the top of the slider, with one end of the support rod facing away from the slider hinged to the positioning slide rod, and a screw threadedly connected to the slider is rotatably installed on the top of the installation sleeve.

[0007] Two guide rods are symmetrically fixed to the top of the mounting sleeve. The axial direction of the guide rods is the same as the direction of extension of the distribution beam, and the slider is slidably connected to the guide rods.

[0008] A handle is provided at one end of the screw, and the handle is slidably disposed at its end along the radial direction of the screw. Limiting blocks are provided at both ends of the handle.

[0009] An adjustment slot is provided through the side of the mounting sleeve, and a bolt and nut mechanism is provided inside the adjustment slot through the distribution beam.

[0010] The mounting sleeves of the two positioning mechanisms located on the same side of the temporary support system are detachably and fixedly connected by a horizontal plate.

[0011] The mounting sleeve is fixedly provided with a connecting screw that matches the end of the horizontal plate, and the end of the horizontal plate is fixedly assembled to the top of the mounting sleeve by a fixing nut.

[0012] The temporary support system has columns, which are fixedly connected by web members, and the distribution beam is fixedly installed on the top of the columns.

[0013] A mounting base plate is fixedly installed at the bottom of the column, and through holes are evenly distributed on the mounting base plate.

[0014] The distribution beam has an I-shaped cross-section, and the mounting sleeve has I-shaped mounting holes that match the distribution beam inside.

[0015] The auxiliary positioning method for steel box girders includes the following steps:

[0016] A temporary support system is set up according to the erection location of the steel box girder;

[0017] Install the positioning mechanism according to the bottom position of the steel box girder;

[0018] Adjust the angle of the positioning slide rod according to the angle of the web of the steel box girder, so that the acute angle between the positioning slide rod and the horizontal plane is not greater than the acute angle between the web of the steel box girder and the horizontal plane;

[0019] The steel box girder is hoisted and slid down along the positioning slide bar until it contacts the top of the distribution beam.

[0020] The beneficial effects of this invention are:

[0021] (1) In this invention, the temporary support system is used to provide temporary support for the steel box girder during the erection process. When the steel box girder is hoisted onto the top of the temporary support system, the positioning slide rod in the positioning mechanism can play a sliding guiding role on the steel box girder during the lowering process, so as to accurately position the steel box girder on the top of the temporary support system without secondary adjustment, thereby improving the convenience and safety of the erection.

[0022] (2) The position of the slider can be adjusted by the screw, and the support rod can be moved by the slider. During the movement of the support rod, the positioning slide rod is pushed and pulled to match the web angle of different steel box girders, thus improving the applicability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the auxiliary positioning device for steel box girders in this invention.

[0024] Figure 2 This is one of the structural schematic diagrams of the positioning mechanism in this invention.

[0025] Figure 3 This is the second schematic diagram of the positioning mechanism in this invention. Detailed Implementation

[0026] Various exemplary embodiments of the invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the invention or its application or use. The invention can be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the invention thorough and complete, and to fully express the scope of the invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0027] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, without excluding the possibility of encompassing other elements. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] like Figures 1 to 3As shown, the auxiliary positioning device for the steel box girder includes a temporary support system. The temporary support system has two parallel distribution beams 3. A positioning mechanism 4 is detachably fixed to the outer side of the end of each distribution beam 3. The two positioning mechanisms 4 located on the same side of the temporary support system are fixedly connected. The positioning mechanism 4 has a mounting sleeve 41 that is detachably fixedly fitted onto the end of the distribution beam 3. A positioning slide rod 42 is hinged to the top of the mounting sleeve 41 near the middle of the distribution beam 3. A slider 44 is slidably mounted on the top of the mounting sleeve 41 along the extension direction of the distribution beam 3. A support rod 43 is hinged to the top of the slider 44. The end of the support rod 43 facing away from the slider 44 is hinged to the positioning slide rod 42. The top of the mounting sleeve 41 is rotatably mounted. A screw 46 is provided, which is threadedly connected to the slider 44. In this embodiment, the temporary support system is used to provide temporary support for the steel box girder during the erection process. When the steel box girder is hoisted onto the top of the temporary support system, the positioning slide rod 42 in the positioning mechanism 4 can guide the steel box girder during its lowering process, accurately positioning the steel box girder on the top of the temporary support system without secondary adjustment, thus improving the convenience and safety of the erection. The position of the slider 44 can be adjusted by moving the screw 46, and the support rod 43 is moved by the slider 44. During the movement of the support rod 43, the positioning slide rod 42 is pushed and pulled to match the web angle of different steel box girders, thus improving the applicability.

[0029] In some embodiments, two guide rods 45 are symmetrically fixedly arranged on the top of the mounting sleeve 41. The axial direction of the guide rods 45 is the same as the direction of extension of the distribution beam 3. The slider 44 is slidably connected to the guide rods 45. The two ends of the guide rods 45 are fixedly arranged on the top of the mounting sleeve 41 by supports. The supports provide stable support for the guide rods 45, and the guide rods 45 provide stable sliding guidance for the slider 44, ensuring the support strength of the slider 45 support rod 43 to the positioning slide rod 42.

[0030] In some embodiments, a handle 47 is provided at one end of the screw 46, which allows the screw 46 to be rotated and the position of the slider 44 to be adjusted. The handle 47 is slidably disposed at its end along the radial direction of the screw 46. Both ends of the handle 47 have limiting blocks 471, which prevent the handle 47 from slipping off the screw 46 by limiting the action of the limiting blocks 471.

[0031] In some embodiments, an adjustment slot 48 is provided through the side of the mounting sleeve 41, and a bolt and nut mechanism 49 is provided through the distribution beam 3 inside the adjustment slot 48. The bolt and nut mechanism 49 can be released to slide along the distribution beam 3 to adjust the position of the mounting sleeve 41. The position of the mounting sleeve 41 is adjusted according to the preset bottom position of the steel box beam. After the adjustment is completed, the bolt and nut mechanism 49 can be locked.

[0032] In some embodiments, the mounting sleeves 41 of two positioning mechanisms 4 located on the same side of the temporary support system are detachably fixedly connected by a horizontal plate 5. The horizontal plate 5 connects the two positioning mechanisms 4 located on the same side of the temporary support system together. When the positioning slide rod 42 of one positioning mechanism 4 contacts the steel box girder, it is not easy to slip, thus ensuring the stability of the connection.

[0033] In some embodiments, a connecting screw 411 matching the end of the horizontal plate 5 is fixedly provided on the mounting sleeve 41, and a through hole corresponding to the connecting screw 411 is opened at the end of the horizontal plate 5. The end of the horizontal plate 5 is fixedly assembled to the top of the mounting sleeve 41 by a fixing nut 51.

[0034] In some embodiments, the temporary support system has columns 1, which are fixedly connected to each other by web members 2. The ends of the web members 2 are welded and fixed to the columns 1, and the distribution beam 3 is fixedly installed on the top of the columns 1.

[0035] In some embodiments, a mounting base plate 11 is fixedly provided at the bottom of the column 1, and through holes are evenly provided on the mounting base plate 11.

[0036] In some embodiments, the distribution beam 3 has an I-shaped cross-section, and the mounting sleeve 41 has an I-shaped mounting hole inside that matches the distribution beam 3.

[0037] In some embodiments, a method for auxiliary positioning of a steel box girder is disclosed, including the following steps:

[0038] The auxiliary positioning device for the steel box girder in the above embodiments is adopted;

[0039] A temporary support system is set up according to the erection location of the steel box girder;

[0040] Install positioning mechanism 4 according to the bottom position of the steel box girder;

[0041] Adjust the angle of the positioning slide rod 42 according to the angle of the web of the steel box girder, so that the acute angle between the positioning slide rod 42 and the horizontal plane is not greater than the acute angle between the web of the steel box girder and the horizontal plane.

[0042] The steel box girder is hoisted and slid down along the positioning slide bar 42 until it contacts the top of the distribution beam 3.

[0043] The various embodiments of the present invention have now been described in detail. To avoid obscuring the concept of the invention, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solutions disclosed herein based on the above description.

[0044] The embodiments described above only illustrate some implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An auxiliary positioning device for steel box girders, characterized in that, The system includes a temporary support system having two parallel distribution beams. A positioning mechanism is detachably and fixedly installed on the outer side of the end of each distribution beam, and the two positioning mechanisms located on the same side of the temporary support system are fixedly connected. The positioning mechanism has a mounting sleeve that is detachably and fixedly fitted onto the end of the distribution beam. A positioning slide rod is hinged to the top of the mounting sleeve near the middle of the distribution beam. A slider is slidably provided on the top of the mounting sleeve along the direction of extension of the distribution beam. A support rod is hinged to the top of the slider. The end of the support rod facing away from the slider is hinged to the positioning slide rod. A screw threadedly connected to the slider is rotatably provided on the top of the mounting sleeve. An adjustment slot is provided through the side of the mounting sleeve, and a bolt and nut mechanism is provided inside the adjustment slot through the distribution beam. The mounting sleeves of the two positioning mechanisms located on the same side of the temporary support system are detachably and fixedly connected by a horizontal plate; The mounting sleeve is fixedly provided with a connecting screw that matches the end of the horizontal plate, and the end of the horizontal plate is fixedly assembled to the top of the mounting sleeve by a fixing nut.

2. The auxiliary positioning device for steel box girders according to claim 1, characterized in that: Two guide rods are symmetrically fixed to the top of the mounting sleeve. The axial direction of the guide rods is the same as the direction of extension of the distribution beam, and the slider is slidably connected to the guide rods.

3. The auxiliary positioning device for steel box girders according to claim 1, characterized in that: A handle is provided at one end of the screw, and the handle is slidably disposed at its end along the radial direction of the screw. Limiting blocks are provided at both ends of the handle.

4. The auxiliary positioning device for steel box girders according to claim 1, characterized in that: The temporary support system has columns, which are fixedly connected by web members, and the distribution beam is fixedly installed on the top of the columns.

5. The auxiliary positioning device for steel box girders according to claim 4, characterized in that: A mounting base plate is fixedly installed at the bottom of the column, and through holes are evenly distributed on the mounting base plate.

6. The auxiliary positioning device for steel box girders according to claim 1, characterized in that: The distribution beam has an I-shaped cross-section, and the mounting sleeve has I-shaped mounting holes that match the distribution beam inside.

7. A method for auxiliary positioning of a steel box girder, employing the steel box girder auxiliary positioning device as described in any one of claims 1 to 6, characterized in that, Includes the following steps: A temporary support system is set up according to the erection location of the steel box girder; Install the positioning mechanism according to the bottom position of the steel box girder; Adjust the angle of the positioning slide rod according to the angle of the web of the steel box girder, so that the acute angle between the positioning slide rod and the horizontal plane is not greater than the acute angle between the web of the steel box girder and the horizontal plane; The steel box girder is hoisted and slid down along the positioning slide bar until it contacts the top of the distribution beam.

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