Alignment precision control device for vertical assembling process of arch ribs

Abstract

The utility model discloses an alignment precision control device for a vertical assembling process of an arch rib, which comprises a traction device which is detachably fixed on each side surface of the top of an installed arch rib section, and the traction length of the traction device can be adjusted; the fixing lug plates are fixedly connected to all the side faces of the bottom of the to-be-installed arch rib section and can fix the movable ends of the traction devices in a matched mode. According to the utility model, the vertical assembly of the arch rib sections can be quickly completed, and the accuracy is controlled within a required range.

Description

Technical Field

[0001] This utility model relates to the field of steel-concrete composite arch bridge construction technology, and in particular to a device for controlling the alignment accuracy during the vertical assembly process of arch ribs. Background Technology

[0002] The arch ribs of steel-concrete composite arch bridges are primarily compression-bearing components, and generally feature large spans and small width-to-span ratios. In large-span bridges, due to the generally large spans, high-strength materials must be used. Moreover, the increased span places higher demands on the load-bearing capacity and seismic resistance of the arch ribs. Steel-concrete composite materials can effectively meet these requirements when used to construct arch ribs. Furthermore, steel-concrete composite materials have the advantages of convenient construction and low cost, and are therefore widely used in transportation construction fields such as highways and railways.

[0003] The construction of a steel-concrete composite arch bridge requires first installing the steel pipe arch ribs, then filling the ribs with concrete. There are various construction methods for steel pipe arch ribs, such as the scaffolding method, cable hoisting method, and rotation method. Among these, the rotation method is widely used due to its advantage of requiring little or no scaffolding. Currently, the rotation method for steel pipe arch ribs is mostly the horizontal assembly and upward lifting method. During assembly, a horizontal assembly scaffold is erected beforehand. The arch rib is then placed on the scaffold on that side for assembly and welding. Finally, using the arch foot as the axis, the arch rib is rotated vertically upwards by the suspension cables above it. After the operation is completed, the main beam scaffold and arch rib scaffold need to be dismantled. However, if the bridge is to be built across a river, and the horizontal assembly method is used to erect supports in the water, this will affect navigation and flood discharge to some extent. Moreover, if the bridge site happens to be located in a valley, there will be problems such as excessive support height leading to construction difficulties and long construction periods. To solve the above problems of the horizontal assembly method, this project designed a negative angle vertical rotation construction method. The arch foot is first temporarily fixed, and then vertically assembled. After the assembly is completed, under the traction of jacks and lowering cables, it is rotated from top to bottom to the bridge axis position or the design elevation to form an arch. During the vertical process, the arch rib segments are hoisted to the design position using hoisting equipment, but there is still a certain positional deviation. Therefore, how to quickly assemble the arch rib segments vertically and ensure that the accuracy meets the requirements has become an urgent problem to be solved. Utility Model Content

[0004] This utility model discloses an alignment accuracy control device for the vertical assembly process of arch ribs, which can help to quickly complete the vertical assembly of arch rib segments and ensure that the accuracy is controlled within the required range.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A device for controlling alignment accuracy during the vertical assembly of arch ribs, comprising:

[0007] The traction device is detachably fixed to each side of the top of the installed arch rib segment, and the traction length is adjustable.

[0008] The fixed ear plate is fixedly connected to each side of the bottom of the arch rib segment to be installed, and can match and fix the movable end of the traction device.

[0009] Using the alignment accuracy control device described above for the vertical assembly process of the arch rib, after the arch rib segment to be installed approaches the already installed arch rib segment, the movable end of the traction device is connected to the fixed ear plate on the same side of the arch rib segment to be installed. By adjusting the length of the traction devices on each side, the arch rib segment to be installed can be made as close as possible to the designed assembly posture, thus completing the coarse adjustment of the arch rib segment posture.

[0010] Preferably, it also includes a jack and a fine-tuning jack, wherein:

[0011] The mounting plate is fixedly connected to each side of the top of the installed arch rib segment and includes an upwardly extending mounting plate fixing part that extends to the outside of the designed position of the arch rib segment to be installed.

[0012] The fine-tuning jack is fixedly connected to the inner side of the fixed part of the horse plate, and its movable end can extend to abut against the arch rib segment to be installed.

[0013] Based on the above-mentioned preferred technical solution, during the vertical assembly of the arch rib segments, mounting plates and traction devices are installed on each side of the top of the already installed arch rib segments, and fixed lugs are installed at the bottom of the arch rib segments to be installed. The arch rib segments to be installed are then hoisted into the area enclosed by the mounting plates and initially connected to the already installed arch rib segments. Fine-tuning jacks are installed inside the mounting plates, and the movable end of the traction device is connected to the fixed lug on the same side of the arch rib segment to be installed. The length of the traction devices on each side is adjusted to make the arch rib segments to be installed as close as possible to the designed assembly posture, thus completing the coarse adjustment of the arch rib segment posture. The lifting length of the fine-tuning jacks on each side is adjusted to ensure that all the connecting bolt holes of the arch rib segments to be installed and the already installed arch rib segments are aligned. The connecting bolts are then installed, and the traction devices, fine-tuning jacks, and hoisting devices are released, thus completing the entire process of vertical assembly and alignment of the arch ribs.

[0014] Preferably, the traction device and the fixing lug, located on the same side of the arch rib segment, are respectively installed on different arch rib chords located on both sides of that side.

[0015] Preferably, each side of the top of the installed arch rib segment is provided with at least two jacks, which are installed on the arch rib chords on both sides of each side; each jack is matched and fixed with a fine-tuning jack.

[0016] Preferably, the support plate includes a support plate part and a support plate part. One end of the support plate part is connected to the top of the installed arch rib segment, and the other end extends outward and bends upward. The inner side of the upwardly bent part is connected to the support plate part.

[0017] Preferably, the horse board support includes two parallel support plates. Each support plate includes a horizontal support plate portion and a vertical support plate portion connected at right angles. One end of the horizontal support plate portion is connected to the top of the installed arch rib segment, and the other end is connected to the vertical support plate portion. The horse board fixing portion is connected to the inner side of the vertical support plate portion.

[0018] Preferably, the pulling device is a hand-operated hoist.

[0019] Preferably, the fine-tuning jack is a continuous jack.

[0020] This utility model has the following advantages:

[0021] (1) This utility model uses a traction device on each side to adjust the posture of the arch rib segment, which is convenient and quick and can quickly complete the coarse adjustment of the posture of the arch rib segment.

[0022] (2) In this embodiment, the traction device and the fine-tuning jack are used together. The traction device can quickly adjust large displacement deviations, and the fine-tuning jack can easily adjust small displacement deviations, thereby quickly achieving precise alignment during the vertical assembly of the arch rib segment. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the structure where the jack and fine-tuning jack are installed on the arch rib chord.

[0025] Figure 3 This is a schematic diagram of the structure in which the tensioning device is installed on the arch rib chord.

[0026] Figure 4 This is an enlarged structural diagram of one of the fine-tuning jacks used to adjust the arch rib chord.

[0027] Figure 5 yes Figure 4 Enlarged right-side structural diagram of the central plate.

[0028] Figure 6 This is a structural diagram of the application scenario of this utility model.

[0029] In the figure, the arch rib segment to be installed is 100, the installed arch rib segment is 200, the support plate is 300, the support plate support part is 310, the vertical part of the support plate is 311, the horizontal part of the support plate is 312, the support plate fixing part is 320, the traction device is 400, the fixing ear plate is 500, the arch rib chord is 600, the upper chord is 610, the lower chord is 620, and the fine adjustment jack is 700. Detailed Implementation

[0030] 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. 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.

[0031] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] A device for controlling the alignment accuracy during the vertical assembly of arch ribs, combined with Figure 1 and Figure 3 As shown, the system includes a pulling device 400 and a fixing ear plate 500. The pulling device 400 is detachably fixed to each side of the top of the installed arch rib segment 200, and its pulling length is adjustable. The fixing ear plate 500 is fixedly connected to each side of the bottom of the arch rib segment 100 to be installed, and can match and fix the movable end of the pulling device 400. Figure 6As shown, after the arch rib segment 100 to be installed approaches the installed arch rib segment 200, the movable end of the traction device 400 is connected to the fixed ear plate 500 on the same side of the arch rib segment 100 as the arch rib segment 200 to be installed. By adjusting the length of the traction devices 400 on each side, the arch rib segment 100 to be installed can be brought as close as possible to the designed assembly posture, thus completing the coarse adjustment of the posture of the arch rib segment.

[0034] Preferably, it also includes a 300-type jack and a 700-type fine-tuning jack, combined with... Figure 2 and Figure 4 As shown, the mounting plates 300 are fixedly connected to each side of the top of the installed arch rib segment 200, and include an upwardly extending mounting plate fixing part 320, which extends to the outside of the designed position of the arch rib segment 100 to be installed. A fine-tuning jack 700 is fixedly connected to the inside of the mounting plate fixing part 320, and its movable end can extend to abut against the arch rib segment 100 to be installed. By setting mounting plates 300 on each side of the top of the installed arch rib segment 200, a larger area can be enclosed, allowing the arch rib segment 100 to be installed to quickly find its position and enter the area during hoisting. After the coarse adjustment of the arch rib segment's posture is completed, the length of the fine-tuning jacks 700 on each side can be adjusted to ensure that all the connecting bolt holes of the arch rib segment 100 to be installed are aligned with those of the topmost installed arch rib segment 200.

[0035] In conjunction with the aforementioned alignment accuracy control device for the vertical assembly process of the arch rib, during the vertical assembly of the arch rib segments, mounting plates 300 and traction devices 400 are installed on each side of the top of the already installed arch rib segment 200, and fixing ear plates 14 are installed at the bottom of the arch rib segment 100 to be installed. The arch rib segment 100 to be installed is then hoisted into the area enclosed by the mounting plates 300 and initially aligned with the already installed arch rib segment 200. Fine-tuning jacks 700 are installed inside the mounting plates 300, and the movable end of the traction device 400 is connected to the arch rib to be installed. On the fixed ear plate 500 on the same side of segment 100 as the arch rib, the lengths of the traction devices 400 on each side are adjusted to make the arch rib segment 100 to be installed as close as possible to the designed assembly posture, completing the coarse adjustment of the arch rib segment posture; the lifting lengths of the fine-tuning jacks 700 on each side are adjusted to ensure that all the connecting bolt holes of the arch rib segment 100 to be installed are aligned with those of the already installed arch rib segment 200, the connecting bolts are installed, and the traction devices 400, fine-tuning jacks 700, and hoisting devices are released, thus completing the entire process of vertical assembly and alignment of the arch rib. This embodiment, by setting the traction devices 400, the horse plate 300, and the fine-tuning jacks 700 to work in coordination, quickly achieves the problem of precise alignment during the vertical assembly of the arch rib segments.

[0036] Preferably, combined with Figure 1 and Figure 3As shown, the tensioning device 400 and the fixing lug 500, located on the same side of the arch rib segment, are respectively installed on different arch rib chords 600 located on both sides of that side. (The last sentence appears to be incomplete and possibly refers to a different device or structure.) Figure 3 Taking the foremost traction device 400 as an example, the traction device 400 is first installed on the lower chord 620 of the already installed arch rib segment 200, and its movable end is connected to the upper chord 610 on the same side of the arch rib segment 100 to be installed. The same applies to the others. This allows for better force application and adjustment of the entire arch rib segment 100 to be installed.

[0037] Preferably, combined with Figure 2 As shown, each side of the top of the installed arch rib segment 200 is equipped with at least two jacks 300, which are respectively installed on the arch rib chords 600 on both sides of each side; each jack 300 is matched and fixed with a fine-tuning jack 700. That is, each of the four arch rib chords 600 at the four corners is equipped with at least two jacks 300, which facilitates the adjustment of each arch rib chord 600 in the front-back and left-right directions. Figure 4 As shown, the mounting plate 300 has a mounting plate fixing part 320 extending to the outside of the designed position of the arch rib segment 100 to be installed, and a fine-tuning jack 16 is fixed inside the mounting plate fixing part 320.

[0038] Preferably, combined with Figure 4 As shown, this embodiment provides a specific arch support plate 300, which includes an arch support plate 310 and an arch support plate fixing part 320. One end of the arch support plate 310 is connected to the top of the installed arch rib segment 200, and the other end extends outward and bends upward. The inner side of the upwardly bent part is connected to the arch support plate fixing part 320. The upward bending of the arch support plate 310 supports the arch support plate fixing part 320, which can better ensure the stability of the arch support plate fixing part 320 and reduce the probability of deformation of the arch support plate fixing part 320 when the fine-tuning jack 16 is lifted.

[0039] More preferably, this embodiment provides a specific support portion 310 for the horse-shaped board, combined with... Figure 4-5 As shown, the support plate 310 includes two parallel support plates. Each support plate includes a horizontal support plate 312 and a vertical support plate 311 connected at right angles. One end of the horizontal support plate 312 is connected to the top of the installed arch rib segment, and the other end is connected to the vertical support plate 311. The inner side of the vertical support plate 311 is connected to the support plate fixing part 320. In addition to better fixing the support plate fixing part 320, the vertical support plate 311 can also serve as a stiffening rib.

[0040] Preferably, the pulling device 400 selected in this embodiment is a hand chain hoist, which is inexpensive and easy to adjust in length. Based on the use of a hand chain hoist as the pulling device 400, in order to facilitate the fixing of the hand chain hoist, a corresponding base ear plate can also be set on the top of the installed arch rib segment 200 for connection with the hook at one end of the hand chain hoist, so as to realize the connection between the hand chain hoist and the installed arch rib segment 200.

[0041] In this embodiment, the fine-tuning jack 700 is preferably a continuous jack.

[0042] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A device for controlling the alignment accuracy during the vertical assembly process of arch ribs, characterized in that... include: The traction device is detachably fixed to each side of the top of the installed arch rib segment, and the traction length is adjustable. The fixed ear plate is fixedly connected to each side of the bottom of the arch rib segment to be installed, and can match and fix the movable end of the traction device.

2. The alignment accuracy control device for the vertical assembly process of arch ribs according to claim 1, characterized in that: It also includes a jack and a fine-tuning jack, among which: The mounting plate is fixedly connected to each side of the top of the installed arch rib segment and includes an upwardly extending mounting plate fixing part that extends to the outside of the designed position of the arch rib segment to be installed. The fine-tuning jack is fixedly connected to the inner side of the fixed part of the horse plate, and its movable end can extend to abut against the arch rib segment to be installed.

3. The alignment accuracy control device for the vertical assembly process of arch ribs according to claim 1, characterized in that: The traction device and the fixing lug, located on the same side of the arch rib segment, are respectively installed on different arch rib chords located on both sides of that side.

4. The alignment accuracy control device for the vertical assembly process of arch ribs according to claim 1, characterized in that: Each side of the installed arch rib segment has at least two jacks, which are installed on the arch rib chords on both sides of each side; each jack is matched and fixed with a fine-tuning jack.

5. The alignment accuracy control device for the vertical assembly process of arch ribs according to claim 1, characterized in that: The horse board includes a horse board support part and a horse board fixing part. One end of the horse board support part is connected to the top of the installed arch rib segment, and the other end extends outward and bends upward. The inner side of the upwardly bent part is connected to the horse board fixing part.

6. The alignment accuracy control device for the vertical assembly process of arch ribs according to claim 1, characterized in that: The horse board support includes two parallel support plates. Each support plate includes a horizontal support plate and a vertical support plate connected at right angles. One end of the horizontal support plate is connected to the top of the installed arch rib segment, and the other end is connected to the vertical support plate. The horse board fixing part is connected to the inner side of the vertical support plate.

7. The alignment accuracy control device for the vertical assembly process of arch ribs according to any one of claims 1-6, characterized in that: The pulling device is a hand-operated hoist.

8. The alignment accuracy control device for the vertical assembly process of arch ribs according to any one of claims 1-6, characterized in that: The fine-tuning jack is a continuous jack.

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