A whole lifting device for a business line beam body

Abstract

The utility model discloses a kind of business line beam body integral jacking devices, comprising: distribution beam and multiple groups of jacking units.Distribution beam is set to the bottom of beam body along cross bridge direction, and multiple groups of jacking units are set to the bottom of distribution beam along cross bridge direction interval.Distribution beam is jacked by jacking unit, and temporary support structure is used to form temporary support to distribution beam after jacking distribution beam by jacking driving element.Jacking device of the above-mentioned business line beam body integral, distribution beam can distribute the jacking force of multiple jacking units, and evenly distribute jacking force to beam body, even if each jacking driving element is out of sync, it can also guarantee the uniformity of beam body stress, guarantee the safety of beam body jacking process.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, specifically to an integral lifting device for the beam of an operational railway line. Background Technology

[0002] As time goes by and the environment changes, bridges also require maintenance and renovation projects to maintain their safety and functionality. Furthermore, bearing replacement, bridge reinforcement, and bridge adjustments during construction all involve lifting the superstructure beams. Bearing replacement and bridge maintenance and reinforcement both contribute to extending the bridge's lifespan and improving driving comfort.

[0003] The main operation for jacking the superstructure beams of bridges involves placing hydraulic jacks and other jacking equipment at the bottom of the beams to simultaneously lift the entire beam or individual spans to a predetermined height. This allows for the replacement of supports, the raising of piers, or maintenance of the beams themselves. During construction, it is crucial to strictly control the jacking speed and displacement to ensure uniform stress on the beams and structural safety. Simultaneously, it is essential to monitor the attitude changes of the piers and beams in real time to prevent irreversible damage.

[0004] Currently, bridge girder lifting often employs either piece-by-piece lifting or overall lifting methods. However, for operational bridges with high traffic volume and tight construction schedules, overall lifting is more suitable. Yet, with existing overall lifting methods, it's difficult to ensure synchronized expansion and contraction of the individual lifting jacks, resulting in uneven stress distribution across the girder and high safety risks. Utility Model Content

[0005] Therefore, it is necessary to provide an overall lifting device for the beams of an operational railway line, addressing the problem that existing methods for lifting bridge beams often result in uneven stress on the beams due to the inability of individual lifting jacks to ensure synchronous expansion and contraction.

[0006] A lifting device for the overall beam of a service line includes: a distribution beam and multiple lifting units. The distribution beam is arranged at the bottom of the beam along the transverse direction, and the multiple lifting units are spaced apart at the bottom of the distribution beam along the transverse direction. The lifting unit includes a lifting drive component and a temporary support structure. The lifting drive component is used to lift the distribution beam, and the temporary support structure is used to provide temporary support for the distribution beam after the lifting drive component lifts the distribution beam.

[0007] In one embodiment, the distribution beam is provided with a reinforcing zone corresponding to the lifting unit, and the distribution beam is provided with a stiffening plate in the reinforcing zone.

[0008] In one embodiment, the contact point between the distribution beam and the beam body, the reinforcing zone, and the lifting unit are located on the same straight line.

[0009] In one embodiment, the transverse length of the distribution beam is greater than the transverse width of the beam body.

[0010] In one embodiment, each of the lifting units includes two sets of temporary support structures located on opposite sides of the lifting drive.

[0011] In one embodiment, the lifting unit further includes a pad, and the lifting drive and the temporary support structure are disposed on the pad.

[0012] In one embodiment, a rubber pad is provided at the contact point between the distribution beam and the beam body.

[0013] In one embodiment, the temporary support structure includes multiple sets of pad blocks, unloading blocks, and lifting steel plates. The multiple sets of pad blocks are stacked sequentially, the unloading blocks are disposed on the pad blocks, and the lifting steel plates are disposed between the distribution beam and the unloading blocks.

[0014] In one embodiment, two adjacent pads are fixed together as a whole by bolts.

[0015] In one embodiment, the lifting drive is a hydraulic jack.

[0016] The aforementioned overall lifting device for the beams of the operating line has at least the following advantages: The lifting drive unit extends the lifting distribution beam, which lifts the upper beam. Once in place, a temporary support structure provides temporary support for the distribution beam, which in turn temporarily supports the upper beam. The lifting drive unit exerts force on the beam through the distribution beam, which distributes the lifting force from multiple lifting units evenly across the beam. Even if the lifting drive units are not synchronized, the force on the beam remains uniform, ensuring the safety of the beam lifting process. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of the overall lifting device for the beam of a service line in one embodiment; Figure 2 for Figure 1 Side view of the overall lifting device for the beam of the operating line shown; Figure 3 for Figure 1 Schematic diagram of the central distribution beam; Figure 4 for Figure 1 A schematic diagram of the structure of the central lifting unit.

[0019] Figure label: 1-Beam body, 2-Existing structure, 10-Distribution beam, 11-Reinforced zone, 12-Stiffening plate, 13-Rubber pad, 20-Lifting unit, 21-Lifting drive component, 22-Temporary support structure, 221-Padded block, 222-Unloading block, 223-Padded steel plate, 23-Padded seat. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0023] Please see Figure 1 and Figure 2 One embodiment of the overall lifting device for the operating line beam includes a distribution beam 10 and multiple lifting units 20.

[0024] The distribution beam 10 is positioned at the bottom of the beam body 1 along the transverse direction of the bridge, and multiple sets of lifting units 20 are spaced apart at the bottom of the distribution beam 10 along the transverse direction of the bridge. The lifting units 20 can be installed on a stable support platform or on an existing structure 2, depending on site conditions. For example, the lifting units 20 can be installed on a newly built pier.

[0025] In one embodiment, the transverse length of the distribution beam 10 is greater than the transverse width of the beam 1, so that the distribution beam 10 can cover the entire width of the beam 1 and ensure that the distribution beam 10 can provide support for the entire beam 1.

[0026] Please refer to the following: Figure 3 In one embodiment, the distribution beam 10 is provided with a reinforcing zone 11 corresponding to the lifting unit 20, and the distribution beam 10 is provided with a stiffening plate 12 in the reinforcing zone 11. The distribution beam 10 is provided with a reinforcing zone 11 to increase its rigidity, which can prevent the distribution beam 10 from being damaged when lifted by the lifting unit 20.

[0027] Furthermore, the contact point between the distribution beam 10 and the beam body 1, the reinforcing zone 11, and the lifting unit 20 are located on the same straight line. The contact point between the distribution beam 10 and the beam body 1, the reinforcing zone 11, and the lifting unit 20 are in the same vertical direction. By using the same reinforcing zone 11 to simultaneously bear the force of the beam body 1 and the force of the lifting unit 20, damage to the distribution beam 10 can be avoided. At the same time, the structure of the distribution beam 10 is simplified, and excessive design of the reinforcing zone 11 is avoided.

[0028] In one embodiment, the number of lifting units 20 is the same as the number of contact points between the distribution beam 10 and the beam body 1. Each lifting unit 20 corresponds one-to-one with a contact point between the distribution beam 10 and the beam body 1, ensuring uniform stress distribution on the distribution beam 10, and consequently, uniform stress distribution on the beam body 1. In another embodiment, a rubber pad 13 is provided at the contact point between the distribution beam 10 and the beam body 1. The rubber pad 13 protects the beam body 1, preventing excessive local compressive stress from damaging it.

[0029] The lifting unit 20 includes a lifting drive component 21 and a temporary support structure 22. The lifting drive component 21 is used to lift the distribution beam 10, thereby raising the beam body 1. The temporary support structure 22 provides temporary support for the distribution beam 10 after it has been lifted by the lifting drive component 21. After the support replacement and bridge repair and reinforcement work are completed, the temporary support structure 22 can be removed, and the beam body 1 can be restored to its original state by being unloaded by the lifting drive component 21.

[0030] In one embodiment, the temporary support structure 22 is provided in two sets, which are respectively located on opposite sides of the lifting drive member 21 to ensure that the distribution beam 10 is subjected to force balance and to ensure the stability of the temporary support.

[0031] In one embodiment, the lifting drive component 21 is a hydraulic jack. The hydraulic jack is synchronously controlled using a PLC synchronous lifting system to ensure the synchronous extension and retraction of the hydraulic jack, thereby ensuring the uniform force distribution on the distribution beam 10. The lifting speed and pressure of the beam 1 must be strictly controlled during lifting and lowering. Data can be automatically collected by a displacement device or measured manually to ensure that the stroke difference does not exceed 5mm, preventing shear damage to the bridge deck.

[0032] It is understood that in other embodiments, the lifting drive 21 can also be other components that can achieve the lifting function, such as an electric telescopic rod, as long as it can achieve the lifting of the beam 1.

[0033] Please refer to the following: Figure 2 and 4 In one embodiment, the temporary support structure 22 includes multiple sets of pad blocks 221, unloading blocks 222, and shim steel plates 223. The multiple sets of pad blocks 221 are stacked in sequence, the unloading blocks 222 are disposed on the pad blocks 221, and the shim steel plates 223 are disposed between the distribution beam 10 and the unloading blocks 222 to achieve temporary support for the distribution beam 10.

[0034] In one embodiment, the pad 221 adopts a modular design, with adjacent pads 221 being fixed together as a whole by bolts, thereby connecting multiple sets of pads 221 into a whole and ensuring the stability of the temporary support. The height of the temporary support structure 22 can be adjusted by adjusting the number of pads 221 stacked.

[0035] In one embodiment, the lifting unit 20 further includes a pad 23. The length and width of the pad 23 should be sufficient to simultaneously accommodate the lifting drive component 21 and two temporary support structures 22, with a certain distance between them. The lifting drive component 21 and the temporary support structures 22 are mounted on the pad 23. The pad 23 is provided to prevent excessive local pressure from damaging the pier or support below the pad 23 and causing danger. The pad 23 and the pad block 221 can be welded from steel plates, with reinforcing ribs arranged between the steel plates to ensure that the pad 23 and the pad block 221 have sufficient strength.

[0036] In one embodiment, when the lifting height of beam 1 is large, it is necessary to release the bridge restraints and loosen the track fasteners of the operating line before lifting to facilitate the lifting of beam 1. During the lifting process of beam 1, the existing anti-lateral displacement reinforced concrete blocks can be used as lateral limiting devices for the bridge. Alternatively, new lateral limiting devices can be installed to effectively prevent the bridge from lateral displacement during the lifting process. Longitudinal lateral displacement limiting devices can also be installed at expansion joints, appropriately distributed on the bridge to ensure the longitudinal stability of the bridge during the lifting process. Specifically, both the lateral limiting devices and the longitudinal lateral displacement limiting devices can be formed by welding steel plates into a pedestal.

[0037] The aforementioned overall beam lifting device for the operating railway line connects each beam through a continuous distribution beam 10, distributing the lifting force of multiple lifting units 20 evenly across the beam 1. Even if the various lifting drive components 21 are not synchronized, the beam 1 can still be subjected to uniform force, ensuring the safety of the beam 1 lifting process. Furthermore, the lifting does not require the assistance of large hoisting equipment, minimizing the impact on the surrounding environment and traffic. During construction, the existing bridges or bridges on the operating railway line can continue to support vehicle traffic, resulting in minimal disruption to traffic.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A device for integrally lifting beams of a railway line, characterized in that, include: The distribution beam and multiple sets of lifting units are provided. The distribution beam is located at the bottom of the beam along the transverse direction of the bridge, and the multiple sets of lifting units are spaced apart at the bottom of the distribution beam along the transverse direction of the bridge. The lifting unit includes a lifting drive component and a temporary support structure. The lifting drive component is used to lift the distribution beam, and the temporary support structure is used to provide temporary support for the distribution beam after the lifting drive component lifts the distribution beam.

2. The overall lifting device for the beam of the operating line according to claim 1, characterized in that, The distribution beam is provided with a reinforcing zone corresponding to the lifting unit, and the distribution beam is provided with stiffening plates in the reinforcing zone.

3. The overall lifting device for the beam of the operating line according to claim 2, characterized in that, The contact point between the distribution beam and the beam body, the reinforcing zone, and the lifting unit are located on the same straight line.

4. The overall lifting device for the beam of a service line according to any one of claims 1-3, characterized in that, The transverse length of the distribution beam is greater than the transverse width of the beam body.

5. The overall lifting device for the beam of the operating line according to claim 1, characterized in that, Each of the lifting units includes two sets of temporary support structures located on opposite sides of the lifting drive member.

6. The overall lifting device for the beam of the operating line according to claim 1, characterized in that, The lifting unit also includes a pad, and the lifting drive and the temporary support structure are disposed on the pad.

7. The overall lifting device for the beam of the operating line according to claim 1, characterized in that, A rubber pad is provided at the contact point between the distribution beam and the beam body.

8. The overall lifting device for the beam of a service line according to any one of claims 5-7, characterized in that, The temporary support structure includes multiple sets of pad blocks, unloading blocks, and lifting steel plates. The multiple sets of pad blocks are stacked in sequence, the unloading blocks are placed on the pad blocks, and the lifting steel plates are placed between the distribution beam and the unloading blocks.

9. The overall lifting device for the beam of the operating line according to claim 8, characterized in that, The two adjacent pads are fixed together as a whole by bolts.

10. The overall lifting device for the beam of the operating line according to claim 1, characterized in that, The lifting drive component is a hydraulic jack.

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