Steel structure support for subsidence area
By adopting the compensation structure of the U-shaped connection part and the arc-shaped end in the steel structure bracket of the belt conveyor, as well as the adjustable anchor bolt connection method, the problem that the traditional bracket cannot effectively support the belt machine in the collapsed area is solved. The flexibility and stability of the bracket are achieved and operating costs are reduced.
Patent Information
- Application Number
- CN202420510906.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-16
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-03-16
AI Technical Summary
The steel brackets of traditional belt conveyors cannot effectively support the belt conveyor in the collapsed area, resulting in unstable operation and safety hazards.
A steel structure bracket for collapse zone is designed, adopting a compensation structure with a U-shaped connection part and an arc-shaped end, and combined with an adjustable anchor bolt connection method, the flexibility and adjustment of the bracket are achieved.
The stent has strong flexibility in the collapsed area terrain, can adapt to uneven surface settlement, prevent stent damage, and reduce operating costs.
Smart Images
Figure CN222523502U_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of belt conveyor steel structures, and in particular relates to a steel structure support for a collapse area. Background Art
[0002] In the mining industry, belt conveyors are the most ideal and efficient continuous transportation equipment. Compared with other transportation equipment (such as locomotives), they have the advantages of long transportation distance, large transportation volume, continuous transportation, etc., and they are reliable in operation and easy to realize automation and centralized control. In the metallurgical, building materials, electric power and other industries, belt conveyors also have the advantages of large transportation volume, simple structure, convenient maintenance, low cost, and strong versatility. They can be used in metallurgy, coal, transportation, electric power, building materials, chemicals, food and machinery industries to transport various bulk materials. With the increase in resource demand, the distance between the mining area and the processing area has gradually increased, and long-distance conveying belt conveyors have gradually occupied a dominant position in the market. However, with the increase in mining efforts, especially for some large mining areas, early mining may cause surface subsidence, which is classified as a subsidence area. The subsidence area is often classified as a wasteland area. The use of motor vehicle transportation also requires geological analysis. The route is planned in the form of avoiding the subsidence area, which often causes the transportation distance, transportation cost and vehicle damage cost to increase exponentially. The traditional steel support structure under the belt conveyor cannot adapt to such a subsidence area and cannot guarantee the safe operation of the belt conveyor. The technical problem to be solved by the present invention is: when an off-road belt conveyor with a continuous multi-span suspension structure passes through the ground of an underground mine, the line faces uneven surface settlement after the mining area is mined due to changes in geological conditions, and the ground becomes a subsidence area. The surface settlement will cause problems such as unstable operation and potential safety hazards to the operation of the belt conveyor.
[0003] The traditional tower anti-sinking only increases the foundation, sets sensors and hydraulic devices on the foundation, or adds an adjustable sleeve to the tower, with flexible and diagonal pulls on both sides of the sleeve. The first structure sets sensors and hydraulic devices on the foundation, which is costly. It is necessary to set a set of sensors and hydraulic device systems at the bottom of each column foot of the tower, and the adjustment range is limited. When it exceeds a certain range, the deformation of the tower increases, which is easy to cause the overall damage of the tower. The second structure adds an adjustable sleeve to the tower, with flexible and diagonal pulls on both sides of the sleeve. This structure can connect the foundation and the tower into a whole. If the whole sinks, the stability of the tower can be guaranteed. However, when uneven sinking occurs in the transportation direction, because the connection between the bottom of the tower and the foundation is a rigid connection, a small settlement can be satisfied. However, when the offset is too large, the bending stress at the bottom is too large, and it is easy to break the connection between the tower and the foundation. This tower structure is not only cumbersome in structure, but also occupies a large space, is costly, and is not easy to adjust. The operation of the conveyor belt has a certain directionality. The core point of this new support structure is to set a rotating hinged support at the bottom, which can enable the support to rotate along the direction of the conveyor belt, release the bending stress caused by collapse, and prevent the support from being damaged. Therefore, there is an urgent need for a new support that can stably support the conveyor belt in the collapse area. Summary of the invention
[0004] In order to solve the above technical problems, the present invention is proposed. The present invention provides a steel structure support for a subsidence area, comprising a plurality of vertical columns, a plurality of horizontal beams connected to the vertical columns on the same side, a plurality of oblique support columns for supporting the vertical columns, and a hinged support arranged under the vertical columns, wherein a compensation structure is arranged under the horizontal beam, one end of the compensation structure is connected to the horizontal beam, and the other end is connected to a fixed foundation.
[0005] Furthermore, the compensation structure has an upper connecting portion and a lower connecting portion, wherein the upper connecting portion is movably connected to the lower connecting portion.
[0006] Furthermore, the upper connection part is configured as a U-shaped connection part, threads are provided on both ends of the U-shaped connection part, mounting holes for mounting the U-shaped connection part are respectively provided at both longitudinal ends of the crossbeam, and the U-shaped connection part is threadedly mounted on the crossbeam.
[0007] Furthermore, the top of the lower connecting part is an arc-shaped end portion, the arc-shaped end portion is connected to the U-shaped connecting part in a ring sleeve, and a base plate is provided at the bottom of the lower connecting part, and the base plate is connected to a fixed foundation by anchor bolts.
[0008] The present invention adopts a compensation structure with a U-shaped connection part and an arc-shaped end, which can ensure that the support has a stronger flexibility than other hinged modes when the support is shaken in the collapsed area, and can be adapted to the terrain of the collapsed area. The bottom plate is connected to the fixed foundation by an adjustable anchor bolt connection method, so that the support can be lifted in the vertical direction and the running plane of the belt conveyor can be adjusted to drop due to local collapse. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0010] Figure 1 It is a schematic diagram of a front view of a section of the support of the present invention.
[0011] Figure 2 It is a left side schematic diagram of a section of the support of the present invention.
[0012] The serial numbers in the figure indicate: 1-vertical column, 2-cross beam, 3-inclined support, 4-hinge support, 5-anchor bolt, 6-base plate, 7-upper connection, 8-lower connection, 9-fixed foundation. DETAILED DESCRIPTION
[0013] The present invention will be further described in detail below in conjunction with embodiments. The advantages and features of the present invention will become clearer as the description proceeds. However, these embodiments are exemplary only and do not constitute any limitation to the scope of the present invention. It should be understood by those skilled in the art that the details and forms of the technical solution of the present invention may be modified or replaced without departing from the spirit and scope of the present invention, but these modifications and replacements all fall within the protection scope of the present invention.
[0014] like Figure 1 and Figure 2 A steel structure support for a collapsed area is shown, comprising a plurality of vertical columns 1, a plurality of horizontal beams 2 connected to the vertical columns on the same side, a plurality of oblique support columns 3 for supporting the vertical columns 1, and a hinged support 4 arranged under the vertical columns, a compensation structure is arranged under the horizontal beam 1, one end of the compensation structure is connected to the horizontal beam, and the other end is connected to a fixed foundation 9.
[0015] The compensation structure has an upper connection part 7 and a lower connection part 8, wherein the upper connection part is movably connected to the lower connection part. The upper connection part is set as a U-shaped connection part, and the two ends of the U-shaped connection part are provided with threads. The longitudinal ends of the crossbeam are respectively provided with mounting holes for mounting the U-shaped connection part, and the U-shaped connection part is threadedly mounted on the crossbeam. The top of the lower connection part is an arc-shaped end part, and the arc-shaped end part is connected to the U-shaped connection part by a ring sleeve. The bottom of the lower connection part is provided with a bottom plate 6, and the bottom plate 6 is connected to the fixed foundation 9 by anchor bolts 5.
[0016] The present invention forms a surface deformation force compensation structure by adopting a dual design of a lower connection part with a U-shaped connection part and an arc-shaped end. It can ensure that when the pillar collapses and shakes in a collapsed area, it has a stronger flexibility than other hinged modes and can be adapted to the terrain of the collapsed area. By adopting an adjustable anchor bolt connection method to connect the bottom plate to a fixed foundation, the bracket can be lifted in the vertical direction and the running plane of the belt conveyor caused by local collapse can be adjusted.
[0017] When the belt conveyor is first loaded, tighten the nuts on the U-shaped connection parts on both sides of the bracket to fix it and prevent it from rotating, resisting the horizontal tension force generated by the belt conveyor running with materials. After the belt conveyor runs smoothly, loosen the nuts on the U-shaped connection parts on both sides of the bracket for a distance, and the vertical column can rotate within a certain angle. For the entire system, when the ground partially collapses, a vertical column drops, driving the upper suspension cable to drop, thereby causing the vertical columns on the left and right sides to rotate. When it exceeds a certain range, the U-shaped connection part on one side is tightened with the lower connection part, the vertical column stops rotating, and the entire belt conveyor operation system tends to be stable. Then place a hydraulic jack under the vertical column that has settled on the ground, and support it on both sides of the beam respectively. Loosen the nuts of the anchor bolts, lift the vertical column with the hydraulic jack, and after returning to the original height, put a suitable pad under the hinged support, and finally tighten the nuts of the anchor bolts, and the entire system will return to its original balance state.
[0018] A crossbeam is set on the top of the rotating hinged support, and oblique supports are set on both sides of the crossbeam. The oblique supports are connected to the vertical columns. This structure has a strong ability to resist bending moments. The vertical columns, oblique supports, crossbeams and bottom hinged supports will form a rigid sheet as a whole. When the top of the support is subjected to a force in the direction of the belt conveyor, a rotational bending moment is generated on the bottom hinged support, and the rigid sheet as a whole can be rotated as a whole. U-shaped connections are used on both sides of the crossbeam to connect with the lower connection in the embedded foundation. The rotation of the support will generate tensile pressure. The U-shaped connection on the compression side is disconnected from the lower connection to release the pressure. The U-shaped connection on the tension side is tightened with the lower connection, which can well transfer the force to the foundation. By adjusting the nut on the U-shaped connection, the length of the U-shaped connection can be lengthened, and the corresponding crossbeam rotation angle is increased. The loose length of the bolt and the crossbeam rotation angle will change in a certain proportion, which is determined by experiments, and the support can be rotated within a certain angle. This new support structure will not be damaged and can be adjusted repeatedly. When the ground subsides, the steel structure can be rotated as a whole. The structure has strong resistance to bending moment, simple structure, clear force, small space and convenient adjustment. It makes it possible to operate the belt conveyor in the subsidence area. It can greatly reduce the operating costs of mines in the subsidence area. This structure can be used in other industries and has a good reference value.
[0019] The technical solution designed by the present invention is applicable to the suspension cable structure, and the two ends of the suspension cable structure fix the main cable through ground anchors, so as to achieve the stability of the entire system structure. A steel frame is suspended under the suspension cable structure, and a belt conveyor is used for transportation inside the steel frame.
[0020] The implementation schemes in the above embodiments can be further combined or replaced, and the embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various changes and improvements made to the technical solutions of the present invention by professional and technical personnel in this field all belong to the protection scope of the present invention.
Claims
1. A steel structure support for a subsidence area, comprising a plurality of vertical columns, a plurality of cross beams connected to the vertical columns on the same side, a plurality of oblique support columns for supporting the vertical columns, and a hinged support arranged under the vertical columns, characterized in that: A compensation structure is arranged under the cross beam, one end of the compensation structure is connected to the cross beam, and the other end is connected to a fixed foundation.
2. The bracket according to claim 1, characterized in that: The compensation structure comprises an upper connecting portion and a lower connecting portion, wherein the upper connecting portion is movably connected to the lower connecting portion.
3. The bracket according to claim 2, characterized in that: The upper connection part is configured as a U-shaped connection part, both ends of the U-shaped connection part are provided with threads, both longitudinal ends of the crossbeam are respectively provided with mounting holes for mounting the U-shaped connection part, and the U-shaped connection part is threadedly mounted on the crossbeam.
4. The bracket according to claim 3, characterized in that: The top of the lower connecting part is an arc-shaped end portion, and the arc-shaped end portion is connected to the U-shaped connecting part in a ring sleeve. The bottom of the lower connecting part is provided with a bottom plate, and the bottom plate is connected to a fixed foundation.