An adjustable support device for adapting the longitudinal profile of a steel beam

Abstract

The utility model discloses a kind of adjustable supporting devices for adapting steel beam longitudinal linear form, belong to the technical field of bridge installation device.The supporting device is symmetrically distributed along the main beam central axis in two groups, and along the main beam length direction is equipped with several groups (group interval 6-10m), each group contains support, counter drag wheel box and jack;Support includes base, four limit posts and two cross beams, base is fixed on the road surface that has been done, and cross beam provides bearing for counter drag wheel box;There is counter drag wheel group in counter drag wheel box, driven by motor and speed reducer to drive main beam to move;Jack is arranged on base and contact with counter drag wheel group, control counter drag wheel group and the contact or separation of main beam.Support is also provided with deviation limiting wheel with elastic rubber layer, and jack is provided with hydraulic locking mechanism.The utility model can solve the problem that steel cushion block needs to be repeatedly increased or decreased in traditional bridge incremental launching construction, the process is complicated and the efficiency is low, the cushion block operation is saved, the construction efficiency and safety are improved, and various working conditions of bridge incremental launching are adapted.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to an adjustable support device for adapting to the longitudinal alignment of steel beam construction. Background Technology

[0002] In bridge construction, it is usually necessary to push the bridge sections to the predetermined positions by setting up jacking devices at both ends of the bridge. The principle of the walking jacking operation is to continuously cycle through four steps: jacking, translation, beam lowering, and return.

[0003] The existing bridge jacking construction scheme requires the use of walking jacks. The number of steel pads under the jacks needs to be adjusted according to the longitudinal (length direction) alignment of the bridge. The specific process is to lift the walking jacks, add or remove steel pads, and lower the walking jacks. The jacking process requires repeated correction.

[0004] Chinese utility model patent (application number: 202021485039.4) discloses a bridge erection device for long-span steel beams, comprising a beam transport device, a lifting device, and a beam feeding auxiliary device. The beam transport device and the beam feeding auxiliary device are sequentially located on a prepared road surface behind the steel beam to be erected. The steel beam is transported by the beam transport device to a position below the lifting device and then lifted. The lower surface of the steel beam is placed on the beam feeding auxiliary device for assisted movement. The beam feeding auxiliary device includes a traveling drive device, a base, a support body, and the beam feeding drive device. The traveling drive device is located below the base, the lower end of the support body is vertically connected to the middle of the base, and the upper end of the support body is hinged to the beam feeding drive device. This utility model's beam feeding drive device moves along the road surface via the traveling drive device, dynamically adjusting the support position. However, the beam feeding drive device can only assist in the movement of the steel beam; a crane or similar device is still needed to propel the steel beam.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this utility model is to provide an adjustable support device for adapting to the longitudinal alignment of steel beams. It can solve the problems of repeated addition and subtraction of steel pads, cumbersome process and low efficiency in traditional bridge jacking construction. It can support and move the steel beam in an adjustable manner in the longitudinal position of the steel beam.

[0007] To achieve the above objectives, this utility model provides an adjustable support device for adapting to the longitudinal alignment of a steel beam. The support devices are arranged in pairs symmetrically along the central axis of the main beam, and several pairs are set along the length of the main beam. The support device includes a bracket, a counter-drag wheel box, and jacks. The support includes a base, four limiting posts and two crossbeams. The base is placed and fixed on the prepared road surface. The four limiting posts are vertically welded to the base. The two crossbeams are respectively erected between the two groups of limiting posts, serving as the bearing platform for the anti-tug wheel box. The anti-tow wheel box is mounted on the crossbeam of the support frame. Inside the anti-tow wheel box is an anti-tow wheel assembly, which consists of multiple anti-tow wheels arranged side by side. The wheel surface of the anti-tow wheels protrudes from the upper surface of the anti-tow wheel box. The anti-tow wheel assembly is driven by a motor and a reducer. The motor power is transmitted to the anti-tow wheel assembly after the speed and torque are adjusted by the reducer. The jack is mounted on the base of the support, with its output shaft facing upward and in contact with the lower surface of the anti-roller assembly, for supporting the vertical movement of the anti-roller assembly relative to the support. When the jack output shaft extends, the anti-drag rollers of the anti-drag roller assembly contact the main beam; when the jack output shaft retracts, the anti-drag roller assembly rests on the crossbeam and separates from the main beam.

[0008] In one or more embodiments, the anti-roller box is further provided with a correction limiting wheel, the correction limiting wheel is connected to the anti-roller box through a limiting wheel bracket, the correction limiting wheel is located on the side of the main beam and the wheel surface is in contact with the side of the main beam.

[0009] In one or more embodiments, the anti-tug wheel assembly has 2-4 anti-tug wheels, and the wheel surfaces of the anti-tug wheels are provided with anti-slip patterns; the rotation direction of the anti-tug wheels is consistent with the movement direction of the main beam.

[0010] In one or more embodiments, the jack is provided with a hydraulic locking mechanism; when the output shaft of the jack extends to the height at which the anti-drag wheel contacts the main beam, the hydraulic locking mechanism automatically locks.

[0011] In one or more embodiments, the outer side of the guide wheel is wrapped with an elastic rubber layer.

[0012] In one or more embodiments, a plurality of sets of support devices are arranged along the length of the main beam, with a spacing of 6-10m between the sets.

[0013] Compared with the prior art, the adjustable support device of this utility model for adapting to the longitudinal alignment of steel beams adopts a pair of symmetrically matched support devices respectively set on both sides of the steel beam (e.g., Figure 6As shown, multiple sets of support devices can be used longitudinally, and jacks can be used instead of traditional steel pads, eliminating the need for repeated addition and removal of pads, greatly simplifying the process, shortening the construction period, and reducing labor and material costs; the controllable anti-drag wheel group of the jacks lifts the main beam to achieve contact and separation with the main beam; by setting the correction limit wheel and elastic rubber layer, the lateral displacement of the main beam can be constrained and hard contact damage can be avoided, enhancing the jacking stability. Attached Figure Description

[0014] Figure 1 This is a front view of an adjustable support device for adapting to the longitudinal alignment of a steel beam, according to an embodiment of the present invention.

[0015] Figure 2 yes Figure 1 The left view.

[0016] Figure 3 yes Figure 1 The right view.

[0017] Figure 4 This is a structural schematic diagram of an adjustable support device for adapting to the longitudinal shape of a steel beam, according to an embodiment of the present invention.

[0018] Figure 5 This is a structural schematic diagram of an adjustable support device for adapting to the longitudinal alignment of a steel beam, according to an embodiment of the present invention.

[0019] Figure 6 This is a side view of the jack being raised according to an embodiment of the present invention, which is an adjustable support device for adapting to the longitudinal shape of a steel beam.

[0020] Figure 7 This is a three-dimensional schematic diagram of the lifting of a jack for an adjustable support device adapted to the longitudinal shape of a steel beam, according to an embodiment of the present invention.

[0021] Explanation of key figure labels: 1-Prepared road surface, 2-Main beam, 3-Base, 4-Limiting post, 5-Crossbeam, 6-Anti-tow wheel box, 7-Anti-tow wheel assembly, 8-Motor and reducer, 9-Jack, 10-Correction limiting wheel, 11-Limiting wheel bracket. Detailed Implementation

[0022] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0023] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0024] like Figures 1 to 7 As shown, according to this utility model, an adjustable support device for adapting to the longitudinal alignment of a steel beam is installed between the pre-constructed road surface 1 and the main beam 2. The support devices are arranged in pairs on both sides of the lower surface of the main beam 2 (e.g., Figure 6 (As shown). Specifically, the support devices are symmetrically distributed along the central axis of the main beam 2, that is, the two support devices in each group are located on both sides of the central axis of the main beam 2. Several groups of support devices are arranged along the length of the main beam 2. The spacing between adjacent groups is determined according to the weight, span and jacking force requirements of the main beam 2. One group can be set at a spacing of 6-10m to avoid local overload of the main beam. All groups of support devices keep their axes aligned to ensure uniform force on the main beam during jacking. The adjustable support device of this utility model, which is used to adapt to the longitudinal alignment of the steel beam, can be used to support the main beam while moving the main beam 2, replacing the steel pads used in traditional construction, thus eliminating the need for adding or removing steel pads in traditional applications.

[0025] An adjustable support device for adapting to the longitudinal alignment of a steel beam according to this utility model includes a bracket, a counter-drag wheel box 6, and a jack 9. The counter-drag wheel box 6 is mounted on the bracket, and the jack 9 is mounted between the counter-drag wheel box 6 and the bracket to support the vertical movement of the counter-drag wheel box 6 relative to the bracket.

[0026] The support structure includes a base 3, limiting posts 4, and crossbeams 5. The base 3 serves as the basic load-bearing component of the support structure, and is directly placed and fixed on the prepared road surface 1, providing a stable support foundation for the entire support structure and ensuring the overall structural stability during the subsequent operation of the anti-tug wheel box 6. There are four limiting posts 4, which are fixed to the base 3 by vertical welding. The four limiting posts 4 are symmetrically distributed to form two sets of opposing support units. There are two crossbeams 5, which are respectively erected between the two sets of limiting posts 4. That is, a crossbeam is welded between each pair of opposing limiting posts 4. The core function of the crossbeams 5 is to serve as a load-bearing platform for the anti-tug wheel box 6, which is directly used to place the anti-tug wheel box 6.

[0027] The anti-roller box 6 contains an anti-roller assembly 7, which consists of multiple anti-rollers arranged side-by-side. The wheel surfaces of the anti-rollers protrude from the upper surface of the anti-roller box 6, and in actual operation, the wheels of the anti-rollers contact the bottom of the main beam 2, forming a stable force-bearing and transmission connection. Each anti-roller box contains 2-4 anti-rollers, made of high-strength wear-resistant steel, with anti-slip patterns on the wheel surfaces to increase contact friction with the bottom of the main beam 2, preventing slippage during jacking. The rotation of the anti-rollers is in the same direction as the movement of the main beam 2. The anti-roller assembly is driven by a motor and a reducer, and combined with the anti-slip pattern design, it can stably transmit power to move the main beam, preventing slippage during jacking and ensuring construction accuracy.

[0028] The anti-tug wheel assembly 7 is driven by a motor and a reducer 8. The power output by the motor is precisely transmitted to the anti-tug wheel assembly 7 after the speed and torque are adjusted by the reducer. The anti-tug wheel assembly 7 drives the anti-tug wheel assembly 7 to rotate synchronously. Through the contact friction between the anti-tug wheel assembly 7 and the bottom of the main beam 2, the rotational power is converted into the displacement driving force of the main beam 2, which ultimately drives the main beam 2 to move smoothly, meeting the position adjustment requirements of the main beam 2 during bridge jacking construction.

[0029] The jack 9 is mounted within the support frame, specifically fixed to the base 3, and positioned in the central area enclosed by the four limiting posts 4. This location ensures that the supporting force of the jack 9 on the anti-roller assembly 7 is evenly transmitted, while avoiding structural interference with the limiting posts 4, crossbeams 5, and other support components. The output shaft (telescopic end) of the jack 9 faces upwards, and its top end directly contacts the lower surface of the anti-roller assembly 7, forming a vertical force transmission path between the base 3, the jack 9, and the anti-roller assembly 7, providing power support for the vertical movement of the anti-roller assembly 7. The jack can also be used in conjunction with a hydraulic locking valve to prevent the jack piston rod from accidentally retracting, improving support safety.

[0030] like Figures 6 to 7 As shown, when the output shaft of jack 9 extends outward, its top end pushes the anti-roller box 6 upward, driving the anti-roller group 7 to rise vertically until the anti-roller surface of the anti-roller group 7 is in close contact with the bottom of the main beam 2. At this time, the anti-roller group 7 can drive the main beam 2 to move through its own motor and reducer, meeting the power transmission requirements of the steel beam jacking construction. When the piston rod of jack 9 retracts inward, its jacking force on the anti-roller box 6 disappears, and the anti-roller box 6 descends vertically under its own gravity, finally landing on the crossbeam 5 of the support. At this time, the anti-roller of the anti-roller box 6 is completely separated from the main beam 2, interrupting the power transmission. It can be used for the position adjustment, maintenance or temporary fixing of the main beam 2 during the construction process.

[0031] The jack 9 can be equipped with a hydraulic locking valve: when the jack output shaft extends to the target height (i.e., the height at which the anti-drag wheel contacts the main beam 2), the hydraulic locking valve automatically locks to prevent the output shaft from retracting unexpectedly due to hydraulic system leakage.

[0032] The jacks 9 in the multiple support devices can dynamically adjust the force balance by extending and retracting different lengths of the output shaft of the jacks 9 according to the bottom line of the main beam 2, and ensure that the anti-tug wheel box group is always in close contact with the bottom of the beam, avoiding the problem of uneven local force due to mismatch of the line.

[0033] The anti-tug wheel box 6 is also equipped with a correction limiting wheel 10, which is welded to the box body of the anti-tug wheel box 6 via a limiting wheel bracket 11. One end of the limiting wheel bracket 11 is fixed to the anti-tug wheel box 6, and the other end carries and positions the correction limiting wheel 10. The correction limiting wheel 10 is located on the side of the main beam 2, and its wheel surface is in contact with the side of the main beam 2. The two support devices in each group can form constraints from both sides of the main beam 2 to prevent the main beam 2 from shifting laterally due to uneven force, road surface deviation, or other factors when it moves under the drive of the anti-tug wheel group 7.

[0034] The outer side of the guide wheel 10 is wrapped with an elastic rubber layer. When the main beam 2 experiences a slight lateral shift, the elastic rubber layer can act as a buffer to prevent paint damage or structural scratches caused by hard contact between the guide wheel 10 and the side of the main beam 2.

[0035] like Figure 6 , 7 As shown, the working process of this utility model is as follows: the jack is started to push the anti-roller box under the main beam. At this time, the correction and limiting wheels of the anti-roller group of the support device are in contact with the top surface and two sides of the main beam respectively; the motor is started, and the motor and reducer drive the anti-roller group to rotate, thereby driving the main beam to move.

[0036] 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. An adjustable support device for adapting to the longitudinal alignment of a steel beam, characterized in that, The support devices are symmetrically distributed in pairs along the central axis of the main beam (2), and several groups are set along the length of the main beam (2); the support devices include brackets, anti-drag wheel boxes (6) and jacks (9). The support includes a base (3), four limiting posts (4) and two crossbeams (5). The base (3) is placed and fixed on the prepared road surface (1). The four limiting posts (4) are vertically welded to the base (3). The two crossbeams (5) are respectively erected between the two groups of limiting posts (4) to serve as the bearing platform of the anti-tug wheel box (6). The anti-tug wheel box (6) is set on the crossbeam (5) of the support. The anti-tug wheel box (6) is equipped with an anti-tug wheel group (7). The anti-tug wheel group (7) is composed of multiple anti-tug wheels arranged side by side. The wheel surface of the anti-tug wheel protrudes from the upper surface of the anti-tug wheel box (6). The anti-tug wheel assembly (7) is driven by a motor and a reducer (8). The motor power is transmitted to the anti-tug wheel assembly (7) after the speed and torque are adjusted by the reducer (8). The jack (9) is mounted on the base (3) of the bracket. The output shaft of the jack (9) faces upward and contacts the lower surface of the anti-drag wheel assembly (7) to support the anti-drag wheel assembly (7) to move vertically relative to the bracket. When the output shaft of the jack (9) extends, the anti-drag wheel of the anti-drag wheel assembly (7) contacts the main beam (2); when the output shaft of the jack (9) retracts, the anti-drag wheel assembly (7) falls on the crossbeam (5) and separates from the main beam (2).

2. The adjustable support device for adapting to the longitudinal alignment of a steel beam according to claim 1, characterized in that, The anti-tug wheel box is also provided with a correction limiting wheel (10). The correction limiting wheel (10) is connected to the anti-tug wheel box through a limiting wheel bracket (11). The correction limiting wheel (10) is located on the side of the main beam (2) and the wheel surface is in contact with the side of the main beam (2).

3. The adjustable support device for adapting to the longitudinal alignment of a steel beam according to claim 1, characterized in that, The anti-tug wheel assembly (7) has 2-4 anti-tug wheels, and the wheel surfaces of the anti-tug wheels are provided with anti-slip patterns; the rotation direction of the anti-tug wheels is consistent with the movement direction of the main beam (2).

4. The adjustable support device for adapting to the longitudinal alignment of a steel beam according to claim 2, characterized in that, The outer side of the wheel body of the correction limiting wheel (10) is wrapped with an elastic rubber layer.

5. The adjustable support device for adapting to the longitudinal alignment of a steel beam according to claim 1, characterized in that, Several sets of support devices are arranged along the length of the main beam (2), with a spacing of 6-10m between the sets.

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