Curve steel box girder pushing device

Abstract

The utility model relates to the technical field of curved beam construction, and provides a curved steel box beam pushing device which comprises a bottom frame. The plurality of transverse pushing devices are arranged on the bottom frame and are used for linearly pushing the steel box girder; the multiple steering pushing devices are arranged on one side of the transverse pushing devices, one transverse pushing device and one steering pushing device form a group, and the multiple groups jointly conduct pushing operation on the steel box girder. By means of the technical scheme, the problem that in the prior art, after relative rotation of the beam body occurs, an existing pushing device can only move transversely or longitudinally, rotation of the beam body can be achieved only through other methods by field operators, and consequently the construction efficiency of the curved beam is low is solved.

Description

Technical Field

[0001] This utility model relates to the field of curved beam construction technology, specifically to a curved steel box girder jacking device. Background Technology

[0002] Generally, for ease of construction and considering site conditions, the jacking of curved bridges involves two jacking scenarios: First, the joints can be properly aligned in the longitudinal straight jacking direction; second, due to site limitations, the joints cannot be fully aligned in the longitudinal jacking direction, requiring longitudinal jacking. In both scenarios, there is no relative rotation between the joints, and jacking can be performed directly in both the transverse and longitudinal directions.

[0003] However, when on-site construction conditions are severely limited, the placement of the beams may cause relative rotation between the joints. In this case, it is impossible to achieve a neat connection by moving only laterally or longitudinally. Only by rotating the entire beam can it be aligned. However, the existing jacking device can only achieve lateral or longitudinal movement, and on-site operators need to use other methods to achieve rotation, which reduces the construction efficiency of curved beams. Utility Model Content

[0004] This invention proposes a jacking device for curved steel box girders, which solves the problem in related technologies that after the relative rotation of the beam, the existing jacking devices can only achieve lateral or longitudinal movement, requiring on-site operators to use other methods to rotate the beam, resulting in very low construction efficiency for curved beams.

[0005] The technical solution of this utility model is as follows:

[0006] A jacking device for curved steel box girders, comprising:

[0007] Base frame;

[0008] A number of transverse jacking devices are provided on the base frame. The transverse jacking devices are used to jack the steel box girder in a straight line.

[0009] The steering and jacking device comprises several units, which are arranged on one side of the lateral jacking device. One lateral jacking device and one steering jacking device form a group, and several groups work together to jack the steel box girder.

[0010] As a further technical solution, the lateral pushing device includes:

[0011] First base; mounted on the base frame;

[0012] The first sliding block is slidably disposed on the first base;

[0013] A support beam is mounted on the first sliding block and is used to support the steel box girder.

[0014] As a further technical solution, the lateral pushing device also includes:

[0015] A first telescopic member is disposed on the first base, and the first telescopic member is used to drive the first sliding block to slide.

[0016] The second telescopic component is disposed on the first sliding block, and the pad beam is disposed on the first sliding block through the second telescopic component. The second telescopic component is used to drive the pad beam to rise and fall.

[0017] As a further technical solution, the difference between the lateral jacking device and the steering jacking device lies only in that the steering jacking device replaces the pad beam with a universal rotating platform; the universal rotating platform includes:

[0018] The support plate is mounted on the second telescopic member;

[0019] A plurality of ball bearings are rotatably disposed at one end of the bearing plate away from the second telescopic member, and the ball bearings are used to support the steel box girder.

[0020] As a further technical solution, several sets of the lateral jacking devices and the steering jacking devices are evenly arranged on the base frame and form the shape of the steel box girder.

[0021] As a further technical solution, it also includes:

[0022] The support pier is detachably mounted on the base frame;

[0023] The steering positioning shaft is mounted on the support pier.

[0024] A limiting sleeve is provided on the steel box girder, and the limiting sleeve is sleeved on the steering positioning shaft, which is used to assist the limiting sleeve in rotation.

[0025] As a further technical solution, it also includes:

[0026] A polytetrafluoroethylene (PTFE) plate is disposed on the steering positioning shaft. The PTFE plate is located between the support block and the limiting sleeve. The PTFE plate is used to reduce friction between the limiting sleeve and the support block.

[0027] The beneficial effects of this utility model are as follows:

[0028] In this invention, the directional jacking device solves the problem of direct jacking and docking when the beam's orientation causes relative rotation at the interface. This eliminates the need for on-site operators to use complex methods to achieve rotation, thus improving construction efficiency. The lateral jacking device and the directional jacking device are combined and work collaboratively. When lateral jacking is required, the lateral jacking device performs the jacking operation; when angle adjustment is needed, the longitudinal jacking device operates, ensuring the steel box girder's angle can be rotated to a reasonable position. This adaptable design enhances the versatility and flexibility of the jacking device, accommodating different construction conditions and requirements. This combined jacking device can precisely control the position and orientation of the steel box girder, ensuring accurate docking even under complex construction conditions, thus improving construction quality. It reduces the time and labor costs associated with finding temporary rotation methods on-site, lowers construction difficulty, and accelerates the construction progress. Attached Figure Description

[0029] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0030] Figure 1 This is the first type of jacking method in the steel box girder jacking process in the background technology of this utility model;

[0031] Figure 2 This is the second jacking method in the steel box girder jacking process in the background art of this utility model;

[0032] Figure 3 This describes the actual possible situations that may occur during the jacking process of steel box girders in the background technology of this utility model;

[0033] Figure 4 This is a schematic diagram of the structure of this utility model;

[0034] Figure 5 This is a schematic diagram of the transverse pushing device in this utility model;

[0035] Figure 6 This is a schematic diagram of the steering and pushing device in this utility model;

[0036] Figure 7 This is a structural schematic diagram of the support block and steering positioning shaft and other related components in this utility model;

[0037] Figure 8 This is a schematic diagram of the base frame structure of this utility model.

[0038] In the diagram: 1. Base frame; 210. Lateral jacking device; 3. Steel box girder; 220. Steering jacking device; 211. First base; 212. First sliding block; 213. Pad beam; 214. First telescopic component; 215. Second telescopic component; 221. Universal rotating platform; 222. Bearing plate; 223. Ball bearing; 410. Support pier; 420. Steering positioning shaft; 430. Limiting sleeve; 440. Polytetrafluoroethylene plate. Detailed Implementation

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely some embodiments of this utility model. For those skilled in the art, they can be understood as further technical solutions without creative effort. In some drawings, components with the same structure or function are only schematically illustrated, or only one is marked. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0040] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] Reference Figures 1-8 A curved steel box girder jacking device is proposed, comprising: a base frame 1; several transverse jacking devices 210 are arranged on the base frame 1, the transverse jacking devices 210 are used to jack the steel box girder 3 in a straight line; several directional jacking devices 220 are arranged on one side of the transverse jacking devices 210, one transverse jacking device 210 and one directional jacking device 220 form a group, and several groups work together to jack the steel box girder 3.

[0043] In this embodiment, the directional jacking device 220 solves the problem of not being able to directly jack and connect when the beam placement direction causes relative rotation at the interface. This eliminates the need for on-site operators to use other complex methods to achieve rotation, thus improving construction efficiency. The lateral jacking device 210 and the directional jacking device 220 are combined into a group and work together. When lateral jacking is required, the lateral jacking device 210 performs the jacking operation; when angle adjustment is needed, the longitudinal jacking device operates, ensuring that the angle of the steel box girder 3 can be rotated to a reasonable position. This adaptability to different construction conditions and requirements improves the versatility and flexibility of the jacking device. This combined jacking device can precisely control the position and orientation of the steel box girder 3, ensuring accurate docking even under complex construction conditions, thus improving construction quality. It reduces the time and labor costs associated with temporarily finding rotation methods on-site, lowers construction difficulty, and accelerates the construction progress.

[0044] As a further technical solution, the transverse jacking device 210 includes: a first base 211 disposed on the base frame 1; a first sliding block 212 slidably disposed on the first base 211; and a pad beam 213 jackingly disposed on the first sliding block 212, wherein the pad beam 213 is used to support the steel box girder 3.

[0045] In this embodiment, the first base 211 provides a stable installation and sliding foundation for the first sliding block 212, ensuring the smoothness and accuracy of the sliding. The first sliding block 212 can slide on the first base 211, allowing for flexible adjustment of the position of the support beam 213, thus adapting to steel box girders 3 of different lengths and positions, improving the versatility of the device. The support beam 213 is adjustable in height as needed to better support the steel box girder 3, ensuring the stability and safety of the steel box girder 3 during the jacking process. This sliding and lifting design allows the transverse jacking device 210 to more accurately adjust the position of the steel box girder 3, improving the accuracy and effect of the jacking. It facilitates the positioning and support of the steel box girder 3, reducing errors and instability factors during the jacking process, and helping to improve construction quality and efficiency.

[0046] As a further technical solution, the transverse jacking device 210 further includes: a first telescopic member 214 disposed on the first base 211, the first telescopic member 214 being used to drive the first sliding block 212 to slide; a second telescopic member 215 disposed on the first sliding block 212, the pad beam 213 being disposed on the first sliding block 212 via the second telescopic member 215, the second telescopic member 215 being used to drive the pad beam 213 to rise and fall.

[0047] In this embodiment, the first telescopic component 214 can precisely control the sliding of the first sliding block 212, achieving accurate adjustment of the lateral position and improving the positioning accuracy of the jacking device. The second telescopic component 215 drives the pad beam 213 to rise and fall, making the height adjustment of the steel box girder 3 more convenient and flexible, adapting to the jacking requirements under different working conditions. The use of telescopic components realizes automated control, reducing the difficulty and labor intensity of manual operation and improving work efficiency. The synergistic effect of the first telescopic component 214 and the second telescopic component 215 can quickly and accurately adjust the steel box girder 3 to the ideal position and height, making full preparations for the jacking operation and ensuring the safety and stability of the jacking process.

[0048] As a further technical solution, the difference between the lateral jacking device 210 and the steering jacking device 220 is only that the steering jacking device 220 replaces the pad beam 213 with a universal rotating platform 221; the universal rotating platform 221 includes: a bearing plate 222 disposed on the second telescopic member 215; and a plurality of ball bearings 223 rotatably disposed at one end of the bearing plate 222 away from the second telescopic member 215, the ball bearings 223 being used to support the steel box girder 3.

[0049] In this embodiment, the universal rotating platform 221 in the steering jacking device 220 enables multi-directional rotation of the steel box girder 3, meeting the construction requirements when there is relative rotation at the interface, and improving the adaptability and flexibility of the jacking device. The bearing plate 222 provides a stable support foundation for the ball bearings 223, ensuring that the ball bearings 223 can evenly bear the weight of the steel box girder 3 and achieve smooth rotation. The rotation arrangement of several ball bearings 223 reduces the friction force when the steel box girder 3 rotates, making the rotation smoother and easier, and improving construction efficiency. Compared with the transverse jacking device 210, the design of simply replacing the pad beam 213 with the universal rotating platform 221 achieves functional differentiation while ensuring a relatively simple structure, and reduces manufacturing and maintenance costs.

[0050] As a further technical solution, several sets of the transverse jacking devices 210 and the steering jacking devices 220 are evenly arranged on the base frame 1 and form the shape of the steel box girder 3.

[0051] In this embodiment, the uniformly arranged transverse jacking devices 210 and directional jacking devices 220 provide uniform and stable support and jacking force for the steel box girder 3, ensuring balanced force distribution during jacking and preventing deformation or damage caused by excessive local stress. Arranging them according to the shape of the steel box girder 3 better conforms to its shape, improving jacking accuracy and stability, and reducing deviations and swaying during the jacking process. This arrangement allows the jacking devices to fully function, effectively transmitting jacking force to all parts of the steel box girder 3 and improving jacking efficiency. The uniform arrangement and matching of the steel box girder 3 shape reduce energy loss during jacking, lower equipment load, and extend equipment lifespan. It also helps maintain controllability and accuracy of jacking in complex construction environments, ensuring construction quality and reducing construction risks.

[0052] As a further technical solution, it also includes: a support pier 410 detachably mounted on the base frame 1; a steering positioning shaft 420 mounted on the support pier 410; and a limiting sleeve 430 mounted on the steel box girder 3, wherein the limiting sleeve 430 is fitted onto the steering positioning shaft 420, and the steering positioning shaft 420 is used to assist the limiting sleeve 430 in rotating.

[0053] In this embodiment, the support pier 410 is detachable. When turning is required, the support pier 410 is installed in a suitable position, and then the limiting sleeve 430 is installed on the steel box girder 3. The limiting sleeve 430 rotates relative to the turning positioning shaft 420, thereby allowing the operator to easily control the rotation angle and direction of the steel box girder 3, thus achieving more precise docking. This structural design can reduce construction errors caused by the instability of the rotation of the steel box girder 3, and improve construction quality and efficiency.

[0054] As a further technical solution, it also includes: a polytetrafluoroethylene plate 440 is disposed on the steering positioning shaft 420, the polytetrafluoroethylene plate 440 is located between the support block 410 and the limiting sleeve 430, and the polytetrafluoroethylene plate 440 is used to reduce the friction between the limiting sleeve 430 and the support block 410.

[0055] In this embodiment, the PTFE plate 440 has an extremely low coefficient of friction. Its placement on the steering positioning shaft 420 significantly reduces friction between the limiting sleeve 430 and the support pier 410, resulting in smoother rotation of the steel box girder 3 and reduced energy loss. Reduced friction decreases component wear, extends the service life of the support pier 410, steering positioning shaft 420, and limiting sleeve 430, and reduces equipment maintenance and replacement costs. Smoother rotation helps improve construction efficiency, accelerates jacking progress, and shortens the construction cycle. Reduced heat generated by friction reduces potential component deformation or damage due to overheating, improving equipment stability and reliability. The self-lubricating properties of the PTFE plate 440 reduce reliance on lubricating grease, lowering maintenance costs and making it more environmentally friendly.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A jacking device for curved steel box girders, characterized in that, include: Base frame (1); A number of transverse jacking devices (210) are provided on the base frame (1). The transverse jacking devices (210) are used to jack the steel box girder (3) in a straight line. There are several steering and jacking devices (220), which are arranged on one side of the transverse jacking device (210). One transverse jacking device (210) and one steering and jacking device (220) form a group, and several groups work together to jack the steel box girder (3).

2. The curved steel box girder jacking device according to claim 1, characterized in that, The lateral pushing device (210) includes: First base (211); mounted on the base frame (1); The first sliding block (212) is slidably disposed on the first base (211); A support beam (213) is raised and lowered on the first sliding block (212), and the support beam (213) is used to support the steel box girder (3).

3. The curved steel box girder jacking device according to claim 2, characterized in that, The lateral pushing device (210) further includes: The first telescopic member (214) is disposed on the first base (211), and the first telescopic member (214) is used to drive the first sliding block (212) to slide; The second telescopic member (215) is disposed on the first sliding block (212), and the pad beam (213) is disposed on the first sliding block (212) through the second telescopic member (215). The second telescopic member (215) is used to drive the pad beam (213) to rise and fall.

4. A curved steel box girder jacking device according to claim 3, characterized in that, The difference between the lateral jacking device (210) and the steering jacking device (220) is only that the steering jacking device (220) replaces the pad beam (213) with a universal rotating platform (221); the universal rotating platform (221) includes: A support plate (222) is disposed on the second telescopic member (215); A plurality of ball bearings (223) are rotatably disposed at one end of the bearing plate (222) away from the second telescopic member (215), and the ball bearings (223) are used to support the steel box girder (3).

5. A jacking device for curved steel box girders according to claim 1, characterized in that, Several sets of the transverse jacking devices (210) and the steering jacking devices (220) are evenly arranged on the base frame (1) and form the shape of the steel box girder (3).

6. The curved steel box girder jacking device according to claim 1, characterized in that, Also includes: The support pier (410) is detachably mounted on the base frame (1); A steering positioning shaft (420) is mounted on the support pier (410); A limiting sleeve (430) is provided on the steel box girder (3). The limiting sleeve (430) is sleeved on the steering positioning shaft (420). The steering positioning shaft (420) is used to assist the limiting sleeve (430) in rotating.

7. A curved steel box girder jacking device according to claim 6, characterized in that, Also includes: A polytetrafluoroethylene (PTFE) plate (440) is disposed on the steering positioning shaft (420). The PTFE plate (440) is located between the support block (410) and the limiting sleeve (430). The PTFE plate (440) is used to reduce the friction between the limiting sleeve (430) and the support block (410).

Images