Combined supporting cushion device for adjusting elevation of steel truss girder

Abstract

The utility model discloses a combined supporting cushion device for adjusting the elevation of a steel truss girder, which comprises a lower cushion seat, a lower cushion seat, an upper cushion seat, an upper cushion seat and a lower cushion seat, the upper pedestal is arranged at the top of the lower pedestal, the bottom of the upper pedestal is in attached sliding connection with the first inclined surface through a second inclined surface, and the top surface of the upper pedestal is horizontally arranged and is used for supporting a steel truss girder; the limiting mechanism comprises a limiting block, the limiting block and the upper pedestal are continuously arranged in the length direction of the first inclined face, and the height position of the limiting block is lower than the height position of the upper pedestal. By adjusting the dislocation amount of the combined supporting pad and adopting the steel plates for limiting, the elevation adjustment accuracy of the steel truss girder is ensured through the combined supporting pad, the difficulty in adjusting the height of the supporting pad through steel plates with different thicknesses in the prior art is avoided, meanwhile, the structure is light, the fine adjustment construction efficiency of the steel truss girder is improved, and good economic benefits are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, and more specifically, to a combined support device for adjusting the elevation of a steel truss beam. Background Art

[0002] Steel trusses offer numerous advantages, including high strength, uniform material quality, excellent plasticity and toughness, and weldability, making them widely used in bridge engineering. In actual bridge construction, after the steel beams are hoisted into place, they often need to be adjusted to ensure that their elevation meets design requirements. Existing techniques typically achieve this by placing steel plates of varying thicknesses underneath the beams. This method requires a large amount of material (steel plates) and is complex, resulting in low beam adjustment efficiency and unmanageable costs.

[0003] In order to solve the above problems, it is necessary to design a combined support device for adjusting the elevation of the steel truss beam, which can improve the construction efficiency while ensuring the accuracy of the steel truss beam elevation adjustment. Utility Model Content

[0004] The purpose of the utility model is to provide a combined support device for adjusting the elevation of steel trusses, which realizes infinite adjustment of the support height by adjusting the offset of the inclined surfaces between the upper and lower pads, and cooperates with a limiting mechanism for limiting the position, thereby ensuring the accuracy of the steel truss elevation adjustment and the supporting stability of the steel truss by the support device, while effectively improving the efficiency of the steel truss fine-tuning construction and controlling the construction cost.

[0005] In order to achieve these purposes and other advantages according to the present invention, a combined support device for adjusting the elevation of a steel truss is provided, comprising:

[0006] a lower cushion seat, the bottom surface of which is horizontally arranged and the top of which is provided with a first inclined surface;

[0007] an upper pad, which is arranged on the top of the lower pad, the bottom of the upper pad being slidably connected to the first inclined surface via a second inclined surface, and the top surface of the upper pad being arranged horizontally and used to support the steel truss;

[0008] a limiting mechanism comprising a limiting block, which is continuously arranged with the upper cushion along the length direction of the first inclined surface, and the height position of the limiting block is lower than the height position of the upper cushion;

[0009] Wherein, in the adjustment state, the bottom surface of the limit block is in contact and sliding connection with the first inclined surface, and the side surface of the limit block is in contact and abutment with the side surface of the upper cushion seat;

[0010] In the limiting state, the limiting block is fixedly connected to the first inclined surface and the side surface of the upper cushion through connecting plates respectively.

[0011] Preferably, in the combined support pad device for adjusting the elevation of a steel truss beam, both the upper pad and the lower pad are lattice structures formed by welding a combination of steel plates.

[0012] Preferably, the combined support device for adjusting the elevation of the steel truss further includes a bottom plate fixed to the bottom of the lower pad, and the bottom plate is a polytetrafluoroethylene plate.

[0013] Preferably, the combined support pad device for adjusting the elevation of the steel truss further includes a rubber pad, which is horizontally laid on the top surface of the upper pad.

[0014] Preferably, the combined support device for adjusting the elevation of the steel truss, the limiting mechanism also includes a track, which is a groove arranged on the surface of the first inclined surface along the length direction; a guide block, which is a strip-shaped protrusion fixed on the surface of the second inclined surface along the length direction, and the guide block is fitted into the groove and slidably connected.

[0015] Preferably, the combined support device for adjusting the elevation of the steel truss further includes a pushing mechanism, a fixed end of which is fixed to the bottom end of the first inclined surface, and the pushing end extends upward along the length direction of the first inclined surface and is fixedly connected to the limit block.

[0016] The utility model has at least the following beneficial effects:

[0017] The utility model discloses a simple and light structure, realizes infinite adjustment of the support height by adjusting the offset of the inclined plane between the upper and lower pads, and cooperates with the limit mechanism for limiting the position, thereby ensuring the accuracy of the steel truss elevation adjustment and the supporting stability of the steel truss by the support device, and at the same time effectively improves the efficiency of the fine-tuning construction of the steel truss, controls the construction cost, and solves the problems of low beam adjustment efficiency and difficult cost control when directly using steel plate supports in the prior art.

[0018] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic elevational structural diagram of a combined support device for adjusting the elevation of a steel truss according to an embodiment of the present invention.

[0020] Description of reference numerals:

[0021] 1. Upper pad; 2. Lower pad; 3. Limit mechanism; 4. Bottom plate; 5. Rubber pad; 6. Countersunk bolt. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0023] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the terms "horizontal", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0024] like Figure 1 As shown, the utility model provides a combined support device for adjusting the elevation of a steel truss beam, comprising:

[0025] A lower cushion 2, the bottom surface of which is horizontally arranged and the top of which is provided with a first inclined surface;

[0026] An upper pad 1 is arranged on top of the lower pad 2, the bottom of the upper pad 1 is slidably connected to the first inclined surface via a second inclined surface, and the top surface of the upper pad 1 is horizontally arranged and used to support the steel truss;

[0027] a limiting mechanism 3, comprising a limiting block, which is continuously arranged with the upper cushion 1 along the length direction of the first inclined surface, and the height position of the limiting block is lower than the height position of the upper cushion 1;

[0028] Wherein, in the adjustment state, the bottom surface of the limit block is in sliding contact with the first inclined surface, and the side surface of the limit block is in contact with the side surface of the upper cushion seat 1;

[0029] In the limiting state, the limiting block is fixedly connected to the first inclined surface and the side surface of the upper cushion seat 1 through connecting plates.

[0030] In the above technical solution, both the lower pad 2 and the upper pad 1 are wedge-shaped structures, and the surfaces (first inclined surface and second inclined surface) where the lower pad 2 and the upper pad 1 contact each other are smooth inclined surfaces with matching inclination angles. Thus, when a pushing force is applied to the upper pad 1 along the length direction of the first inclined surface (or the second inclined surface) while the position of the lower pad 2 remains unchanged, the upper pad 1 can slide up / down along the first inclined surface while maintaining the top surface horizontal, thereby changing the height of the overall combined support device. The limiting mechanism 3 is configured to control the relative displacement of the upper pad 1 and the lower pad 2. The limiting block and the upper pad are both arranged on the first inclined surface, and the limiting block is located behind the upper pad. Therefore, after the support height is adjusted by the relative sliding of the upper and lower pads, the limiting block is clamped between the rear side of the upper pad and the lower pad (first inclined surface) and fixed to the upper and lower pads respectively, thereby achieving rapid solidification of the support height.

[0031] Specifically, according to the setting status of the limit block, the combined support device for adjusting the elevation of the steel truss has two working states: in the adjustment state, the limit block is not fixedly connected to the upper pad 1 or the lower pad 2, and the staff can push the upper pad alone along the first inclined plane or push the upper pad 1 and the limit block simultaneously to adjust the support height; when the support height adjustment is completed, the limit block is fixedly connected to the first inclined plane and the rear side of the upper pad 1 through the connecting plate. At this time, the device enters the limiting state, and the entire device can be installed on the completed bridge structure for fine-tuning construction of the steel truss. Here, the lower pad (bottom surface) is supported on the bridge structure, and the upper pad (top surface) stably supports the steel truss above.

[0032] In this embodiment, the method for using the combined support device for adjusting the elevation of a steel truss is as follows:

[0033] S1. Measure the steel truss elevation on site to determine the required support height;

[0034] S2, assemble the combined support device for adjusting the elevation of the steel truss, dock the upper pad 1 with the lower pad 2, make the first inclined surface fit the second inclined surface, and install the limit block on the rear side of the upper pad 1. At this time, the limit block and the upper pad are in the initial state, as shown in FIG. Figure 1 As shown, the limit block is located at the bottom end of the first inclined surface, and the rear side of the upper pad 1 abuts against the front side of the limit block; then it enters the adjustment state, that is, the limit block is pushed according to the height of the support pad, so that it drives the upper pad 1 to slide upward along the length direction of the first inclined surface for a set distance (the sliding distance of the upper pad can be obtained by converting the height of the support pad and the inclination angle of the first inclined surface), and finally the position of the limit block relative to the upper and lower pads is fixed by using the connecting plate, and the limit state is entered;

[0035] S3. Install the support device in the limited state to the steel truss installation position set on the bridge, and then hoist the steel truss. After the steel truss is in place, it can be adjusted to the elevation under the support of the support device.

[0036] The utility model realizes stepless adjustment of the support height by adjusting the misalignment of the inclined surfaces between the upper and lower pads, and cooperates with the limit mechanism to limit the position. This adjustment method can realize continuous adjustment of the support height within a certain range, and will not be restricted by the size of the support steel plate itself, thereby ensuring the accuracy of the steel truss elevation adjustment and the supporting stability of the steel truss by the support device; at the same time, the support height can be adjusted into place at one time according to the measured steel truss elevation, and there is no need to repeatedly add steel plates under the steel truss. The operation is convenient and the reusability is high, which effectively improves the efficiency of the steel truss fine-tuning construction, controls the construction cost, and has good economic benefits.

[0037] In another technical solution, the combined support device for adjusting the elevation of a steel truss beam, the upper support 1 and the lower support 2 are both lattice structures formed by welding steel plates. Figure 1 As shown, both the upper and lower pads 1 and 2 are lattice-shaped wedge-shaped blocks formed by welding together multiple steel plates. This makes the upper and lower pads simple and lightweight, allowing for easy on-site fabrication and further reducing construction costs. Accordingly, the connecting plates can be constructed of thick steel plates, and in the restricted position, the limit blocks can be fixedly connected to the upper and lower pads by welding.

[0038] In another technical solution, the combined support device for adjusting the elevation of a steel truss further includes a base plate 4 fixed to the bottom of the lower pad 2, wherein the base plate 4 is a polytetrafluoroethylene plate. The base plate is made of polytetrafluoroethylene plate and is fixed to the bottom of the lower pad 2 with countersunk bolts 6. This effectively reduces friction between the support device and the underlying fixed structure of the bridge. During use, the support device and the steel truss above can be considered as a whole, effectively adapting to thermal expansion and contraction of the steel truss body. The displacement of the steel truss is not easily restricted, allowing the steel truss to slide freely in the supported state for horizontal beam adjustment.

[0039] In another technical solution, the combined support device for adjusting the elevation of the steel truss further includes a rubber pad 5 horizontally laid on the top surface of the upper pad 1. Specifically, the rubber pad 5 covers the top plane of the upper pad 1. The addition of a rubber pad between the contact surface of the support device and the steel truss ensures that the combined support device is evenly stressed when supporting the steel truss and effectively avoids damage to the steel truss during the support and adjustment process.

[0040] In another technical solution, the combined support pad device for adjusting the elevation of a steel truss, wherein the limiting mechanism 3 further includes a track, which is a groove provided on the surface of the first inclined surface along the length direction thereof; and a guide block, which is a strip-shaped protrusion fixed on the surface of the second inclined surface along the length direction thereof, wherein the guide block is engaged with the groove and slidably connected. In the above technical solution, the track and the guide block are not shown in the accompanying drawings. The track can be provided in multiple numbers, which are spaced apart along the width direction of the first inclined surface. The guide blocks are provided in a one-to-one correspondence with the track, and the height of any guide block extending into the corresponding track (groove) is less than or equal to the depth of the track, so as not to affect the mutual fit between the first inclined surface and the second inclined surface. The guide blocks at the bottom of the upper seat are correspondingly embedded in the track at the top of the lower seat when the upper and lower seats slide relative to each other along the inclined plane to adjust the height of the support pad. The guide blocks are fixed and move along the length direction (upward / downward) of the corresponding track, that is, the upper seat and the lower seat are fixed and move relative to each other along the length direction of the inclined plane (first and second inclined planes) when in contact. This not only facilitates the rapid alignment and installation of the upper and lower seats, but also ensures the stability of the lateral relative positions of the upper and lower seats during subsequent adjustments, and avoids the upper seat from shifting to both sides during the sliding process along the first inclined plane, which affects the force and support stability of the support pad device during use.

[0041] In another technical solution, the combined support pad device for adjusting the elevation of a steel truss further includes a pushing mechanism (not shown in the accompanying drawings), the fixed end of which is fixed to the bottom end of the first inclined surface, and the pushing end extends upward along the length of the first inclined surface and is fixedly connected to the limit block. The pushing mechanisms may be provided in multiple locations, spaced apart along the width of the first inclined surface. Each pushing mechanism may utilize an electric telescopic rod, which is provided along the length of the first inclined surface. The electric telescopic rod may be connected to an external controller via wireless or wired means to receive signals. When the support pad height needs to be adjusted, construction workers send corresponding instructions to the electric telescopic rod (pushing mechanism) through the controller. The electric telescopic rod performs the corresponding telescopic action while driving the limit block to slide along the first inclined surface (lower pad) a set distance. When pushing upward (obliquely), the movement of the limit block will push the adjacent upper pad to move synchronously. When pushing downward (obliquely) (retracting), the support force of the limit block on the upper pad decreases / disappears. Under the action of gravity, the upper pad will naturally slide down the first inclined surface until it re-engages with the reset limit block. The setting of the pushing mechanism can further reduce the amount of operation required by construction workers. At the same time, the mechanical operation of the support pad height adjustment process greatly improves the accuracy of the operation and effectively avoids the errors that may occur in manual operation.

[0042] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A combined support device for adjusting the elevation of a steel truss beam, characterized in that: include: a lower cushion seat, the bottom surface of which is horizontally arranged and the top of which is provided with a first inclined surface; an upper pad, which is arranged on the top of the lower pad, the bottom of the upper pad being slidably connected to the first inclined surface via a second inclined surface, and the top surface of the upper pad being arranged horizontally and used to support the steel truss; a limiting mechanism comprising a limiting block, which is continuously arranged with the upper cushion along the length direction of the first inclined surface, and the height position of the limiting block is lower than the height position of the upper cushion; Wherein, in the adjustment state, the bottom surface of the limit block is in contact and sliding connection with the first inclined surface, and the side surface of the limit block is in contact and abutment with the side surface of the upper cushion seat; In the limiting state, the limiting block is fixedly connected to the first inclined surface and the side surface of the upper cushion through connecting plates respectively.

2. The combined support device for adjusting the elevation of a steel truss beam according to claim 1, characterized in that: The upper cushion and the lower cushion are both lattice structures formed by welding steel plates together.

3. The combined support device for adjusting the elevation of a steel truss beam according to claim 1, characterized in that: It also includes a bottom plate, which is fixed to the bottom of the lower cushion seat, and the bottom plate is a tetrafluoroethylene plate.

4. The combined support device for adjusting the elevation of a steel truss beam according to claim 1, characterized in that: Also included is a rubber pad which is horizontally laid on the top surface of the upper cushion.

5. The combined support device for adjusting the elevation of a steel truss beam according to claim 1, characterized in that: The limiting mechanism also includes a track, which is a groove arranged on the surface of the first inclined surface along the length direction; a guide block, which is a strip-shaped protrusion fixed on the surface of the second inclined surface along the length direction, and the guide block is engaged with the groove and slidably connected.

6. The combined support device for adjusting the elevation of a steel truss beam according to claim 1, characterized in that: It also includes a pushing mechanism, a fixed end of which is fixed to the bottom end of the first inclined surface, and the pushing end extends upward along the length direction of the first inclined surface and is fixedly connected to the limit block.

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