Steel truss trestle upper chord lifting, reinforcing and transforming structure
By adding frame columns and connecting ribs to the steel truss trestle bridge, and raising the crossbeams and wind braces, the problem of insufficient clearance height of the trestle bridge was solved, achieving efficient and low-cost renovation and avoiding the trouble of demolition and reconstruction.
Patent Information
- Application Number
- CN202520414617.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Existing technologies, when adding or modifying coal conveying trestle equipment, cannot meet the usage requirements for the net height of the trestle, resulting in the need to dismantle and rebuild a new trestle, which is time-consuming, labor-intensive, and costly, affecting production.
By adding frame columns, connecting ribs, and upper chords to the existing steel truss trestle bridge, and by improving the original crossbeams and wind braces, combined with PKPM modeling and analysis, the net height of the trestle bridge was increased.
Without affecting production, the existing trestle bridge was modified, saving a lot of time and costs. The modification cost was only one-tenth of that of building a new trestle bridge, and the completion time was only more than ten days.
Smart Images
Figure CN223824057U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel truss structure technology, and in particular to a steel truss trestle bridge upper chord raising and reinforcement modification structure. Background Technology
[0002] With the improvement and advancement of coal conveyor bridge manufacturing processes, many old conveyor bridges need to be replaced or have additional equipment added to meet the production needs of coal mines. For example, single-layer conveyor belts may be replaced with double-layer conveyor belts, and dust collectors may be added. After adding or modifying the equipment, the clearance height of the conveyor bridge may no longer meet actual usage requirements. The usual practice is to dismantle the original conveyor bridge and design a new one. However, this approach requires redesigning, reprocessing, and installing the steel structure, which is time-consuming, costly, and disrupts production.
[0003] To address these issues, this application proposes a steel truss trestle bridge upper chord elevation and reinforcement structure. Summary of the Invention
[0004] To overcome the shortcomings of existing technologies, this utility model provides a steel truss trestle bridge upper chord raising and reinforcement modification structure, including newly added frame columns, characterized in that:
[0005] The newly added frame column is fixedly connected above the original frame column. The original crossbeam is removed from the original frame column and then raised to the new frame column. Connecting rib plate one and connecting rib plate two are welded above the original upper chord. The new upper chord is welded above connecting rib plate one.
[0006] Furthermore, in order to better realize this utility model, a longitudinally continuous connecting rib plate 1 is welded above the original upper chord, and transverse connecting rib plates 2 are welded at intervals on both sides of the connecting rib plate 1.
[0007] Furthermore, in order to better realize this utility model, the newly added upper chord connects to the original crossbeam, original wind brace and roof panel that were removed and raised to this location.
[0008] Furthermore, in order to better realize this utility model, angle steel is welded to the side of the newly added upper chord to fill the wall panel.
[0009] The beneficial effects of this utility model are:
[0010] This invention utilizes the existing trestle without demolishing it, by raising the existing trestle as a whole. This not only does not affect production but also significantly reduces costs. Compared to building a new trestle truss, the cost of this modification and reinforcement is less than one-tenth of that of a new trestle truss. The modification and reinforcement takes only about ten days, while building a new trestle takes about six months, greatly saving time and not affecting the production and operation of the coal conveying trestle. The time and cost savings are immeasurable. Attached Figure Description
[0011] Figure 1 This is an elevation view of the overall truss lifting mechanism of this utility model;
[0012] Figure 2 This is a heightened view of the frame opening of this utility model;
[0013] Figure 3 This is a detailed drawing of the upper chord lifting node of this utility model;
[0014] Figure 4 For the present utility model Figure 3 The view from which the view is directed.
[0015] In the picture,
[0016] 1. Connecting rib plate one; 2. Connecting rib plate two; 3. Adding an upper chord; 4. Adding a frame column; 5. Original crossbeam; 6. Original wind brace. Detailed Implementation
[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0019] Figures 1-4 This is a specific embodiment of the present invention, which is a steel truss trestle bridge upper chord raising and reinforcement structure. A longitudinal connecting rib plate 1 is welded to the upper chord of the original trestle bridge truss, and transverse connecting rib plates 2 are welded at certain intervals on both sides of the longitudinal rib. Calculations show that the longitudinal connecting rib plate 1 meets the local stability requirements. A new upper chord 3 with the same cross-section as the original upper chord is welded above the longitudinal connecting rib plate 1. The original crossbeam 5, original wind brace 6, and roof panel are removed and raised to the position of the new upper chord 3. Both connecting rib plate 1 and connecting rib plate 2 must meet the calculation requirements. Angle steel is welded to the side of the new upper chord 3 to fill in the wall panel. At the frame opening position, a new column member with the same cross-section as the original frame opening column is added to the top surface of the original frame opening column, and the new frame opening column 4 is butt-welded to the original frame opening column with a bevel. The original crossbeam 5 is removed and raised to the position of the upper chord wind brace, using the same method as the original structure. PKPM modeling analysis shows that the stress ratio and deflection of the steel truss trestle bridge members after raising meet the specifications.
[0020] Finally, 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. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. A steel truss trestle upper chord lifting reinforcement reconstruction structure, comprising a new frame opening column (4), characterized in that: the new frame opening column (4) is fixedly connected above the original frame opening column, the original cross beam (5) is removed from the original frame opening column and lifted to the new frame opening column (4), a connecting rib plate one (1) and a connecting rib plate two (2) are welded above the original upper chord, and the upper part of the connecting rib plate one (1) is welded with a new upper chord (3).
2. The steel truss trestle upper chord lifting reinforcement reconstruction structure according to claim 1, characterized in that: a connecting rib plate one (1) is welded above the original upper chord, and transverse connecting rib plate two (2) are welded at both sides of the connecting rib plate one (1) at intervals.
3. The steel truss trestle upper chord lifting reinforcement reconstruction structure according to claim 1, characterized in that: the new upper chord (3) is connected with the original cross beam (5), the original wind brace (6) and the roof panel which are removed and lifted to the new upper chord (3).
4. The steel truss trestle upper chord lifting reinforcement reconstruction structure according to claim 3, characterized in that: angle steel is welded at the side of the new upper chord (3) to complete the wall panel.