A downhole hoisting device

Abstract

This application relates to an underground lifting device, comprising: a first lifting beam, a second lifting beam, liner plates, and a rotating lifting ring. The connecting ends of the first and second lifting beams are respectively provided with interfaces forming beveled cuts. The protruding interface of the second lifting beam is inserted into the grooved interface of the first lifting beam to form a main lifting beam, with the interface located at the midpoint of the main lifting beam. Liner plates are respectively provided on the sides of the main lifting beam corresponding to the interfaces. A rotating lifting ring is movably installed on both the first and second lifting beams. The segmented design facilitates lowering and transportation in confined underground spaces, reducing operational difficulty and cost. The 53° beveled cut interface increases the welding area, and the full welding process ensures connection strength. The liner plates on both sides form a "sandwich" reinforcement structure, effectively suppressing deformation and cracking at the welded parts, and improving the overall rigidity and reliability of the lifting beam. The movable lifting point design is suitable for lifting operations of various equipment, ensuring that the center of gravity is located in the middle part of the device during lifting, meeting the high safety standards required for underground mining operations.

Description

Technical Field

[0001] This application relates to the field of underground mining equipment technology, and in particular to an underground hoisting device. Background Technology

[0002] In underground mining operations, lifting devices are crucial tools for moving and installing large equipment (such as ventilation fans, water pumps, and belt conveyor components). Traditional lifting devices typically use lifting beams made from a single piece of I-beam. However, due to the narrow spaces and complex transportation routes in underground tunnels, lowering and transporting a single I-beam is extremely inconvenient, often requiring complex handling equipment or manual disassembly, resulting in low operational efficiency and high safety risks. Existing technologies employ segmented designs for some lifting beams, but these segmented connection methods have significant drawbacks: for example, improper selection of interface locations (such as at the ends) can easily lead to stress concentration; arbitrary cutting angles or insufficient connection strength (such as using spot welding or bolt connections) may cause structural instability, breakage, and other safety accidents during lifting.

[0003] In addition, traditional hoisting equipment has fixed lifting points, while underground operations require the hoisting of various materials or equipment, including pipes with the center of gravity in the middle, equipment with the center of gravity shifted to the left or right, etc. During the hoisting process, the center of gravity may not be in the exact center of the beam, and the fixed lifting point position causes the local stress on the hoisting device to be particularly large during the hoisting operation. Long-term stress overload will cause the hoisting equipment to deform or even break. Utility Model Content

[0004] To address or partially address the problems existing in related technologies, this application provides an underground lifting device with a segmented structure and an interface using a beveled insertion design. This achieves a stable connection while the lifting point can be adjusted to follow the center of gravity of the lifting material, avoiding localized stress.

[0005] The first aspect of this application provides an underground lifting device, including: a first lifting beam, a second lifting beam, a liner plate, and a rotating lifting ring. The connecting ends of the first lifting beam and the second lifting beam are respectively provided with interfaces forming oblique cut surfaces. The protruding interface of the second lifting beam is inserted into the grooved interface of the first lifting beam to form a main lifting beam, and the interface is located at the midpoint of the main lifting beam. The side of the main lifting beam is provided with a liner plate corresponding to the interface. The rotating lifting ring is movably installed on the first lifting beam and the second lifting beam.

[0006] The first and second lifting beams are provided with sliding grooves, and sliders are slidably connected in the sliding grooves. Rotating lifting rings are installed on the sliders.

[0007] The first and second lifting beams are provided with mounting grooves spaced apart, and "convex" shaped mounting blocks are provided corresponding to the mounting grooves. The mounting blocks are embedded in the mounting grooves, and the rotating lifting rings are installed on the mounting blocks.

[0008] The interface has a cutting angle of 53° and a length that is half the width of the main lifting beam.

[0009] The first and second lifting beams have positioning holes on their corresponding side walls, and positioning pins are inserted into the positioning holes.

[0010] The technical solution provided in this application may include the following beneficial effects:

[0011] This application provides an underground lifting device with a segmented design that facilitates lowering and transportation in confined underground spaces. The lifting can be completed manually or with small transport equipment, reducing operational difficulty and cost. A 53° beveled interface increases the welding area, and full welding ensures connection strength. The side linings form a "sandwich" reinforcement structure, effectively suppressing deformation and cracking at the welded areas and improving the overall rigidity and reliability of the lifting beam. The movable lifting point design is suitable for lifting various equipment, ensuring the center of gravity is located in the middle of the device during lifting, effectively avoiding localized stress. Through structural optimization, the device reduces the risk of equipment falling due to connection failure during lifting, meeting the high safety standards required for underground mining operations.

[0012] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0013] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0014] Figure 1 This is a schematic diagram of the device shown in Embodiment 1 of this application;

[0015] Figure 2 This is a schematic diagram of the connection structure of the device shown in Embodiment 1 of this application;

[0016] Figure 3 This is a side view of the device shown in Embodiment 1 of this application;

[0017] Figure 4 This is a schematic diagram of the device shown in Embodiment 2 of this application;

[0018] Figure label:

[0019] In the diagram, 1—first lifting beam, 2—second lifting beam, 3—slide groove, 4—slider, 5—rotating lifting ring, 6—liner plate, 7—positioning pin, 8—mounting groove, 9—mounting block. Detailed Implementation

[0020] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0021] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0023] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] like Figure 1The illustrated downhole lifting device includes: a first lifting beam 1, a second lifting beam 2, a liner plate 6, a slider 4, and a rotating lifting ring 5. The connecting ends of the first lifting beam 1 and the second lifting beam 2 are respectively provided with interfaces forming oblique cut surfaces. The protruding interface of the second lifting beam 2 is inserted into the grooved interface of the first lifting beam 1 to form a main lifting beam, with the interface located at the midpoint of the main lifting beam. Liners 6 are respectively provided on the sides of the main lifting beam corresponding to the interfaces.

[0027] The main lifting beam is made of I-beams and designed as a detachable segmented structure, consisting of at least two I-beam units. The interface is located at the center of the I-beam unit (i.e., the midpoint along the length) to avoid stress concentration at the ends; the interface length is half the width of the I-beam, for example, if the width of the I-beam is B, then the interface length is B / 2; the interface cutting angle is 53° to form a beveled surface, thereby increasing the welding contact area and improving the connection strength.

[0028] After the two I-beam units are aligned with the 53° beveled interface, they are welded using a full welding process to ensure that there are no incomplete welds or missing welds at the interface, forming a continuous weld seam. After welding, liner plates 6 are welded to the top and bottom of the lifting beam welding position, respectively. The dimensions of the liner plates 6 are completely matched with the cross-sectional dimensions of the I-beam (i.e., the width and thickness of the liner plates 6 are consistent with the flange width and thickness of the I-beam), and the length of the liner plates 6 is equal to the width of the I-beam. The liner plates 6 further disperse the stress at the welding position and enhance the bending and shear resistance of the overall structure.

[0029] To enable the movable installation of the rotating lifting ring 5, grooves 3 are provided on the first lifting beam 1 and the second lifting beam 2. A slider 4 is slidably connected within the grooves 3, and the rotating lifting ring 5 is mounted on the slider 4. Locking bolts are installed at the bottom of the slider 4; after tightening, they fit tightly against the inner wall of the groove 3, ensuring no slippage during lifting. A 360° rotating lifting ring is installed at the top of the slider 4 to accommodate different lifting angles and prevent uneven local stress caused by deviation in the lifting direction. Through dynamic adjustment of the lifting point position, the lifting center of gravity can always coincide with the central axis of the beam, effectively preventing local overload.

[0030] like Figure 2As shown, due to the interface design, although the protruding interface of the second lifting beam 2 matches the grooved interface of the first lifting beam 1, slight misalignment may occur during welding due to stress and vibration. Positioning holes are provided on the sidewalls corresponding to the interfaces of the first and second lifting beams, and positioning pins 7 are inserted into these holes. After the positioning pins 7 pass through the aligned positioning holes, they fix the connection interface between the first and second lifting beams, ensuring no misalignment during welding. After welding, the positioning pins 7 assist the main beam in bearing part of the tensile force, making the connection stronger. Simultaneously, positioning holes are also made on the liner plate 6 corresponding to the positioning pins 7, allowing the positioning pins 7 to further position and fix the liner plate 6. After installing the two positioning pins 7 at the transition point on the main lifting beam, small holes are drilled in the liner plate 6 at the positions corresponding to the positioning pins 7. When installing the liner plate 6, the small holes of the liner plate 6 are aligned and fitted onto the positioning pins 7 before welding and bolting. The positioning pins 7 not only fix the two lifting beams but also "position" the liner plate 6, preventing it from shifting during welding. Furthermore, once the lining plate 6 is fitted onto the locating pin 7, its fit with the lifting beam will be better, allowing for a more even distribution of stress. Figure 3 As shown.

[0031] The assembled lifting beam is fixed to the roof of the underground roadway using anchor bolts or lifting rings, and is used to lift equipment such as ventilation fans and motors. During the lifting process, the load is transferred to the fixed point through the lifting beam. The 53° oblique cut interface and the lining plate 6 structure can effectively distribute the load, avoid stress concentration, and ensure operational safety.

[0032] Example 2

[0033] The difference between this embodiment and Embodiment 1 is that the first lifting beam 1 and the second lifting beam 2 are provided with mounting grooves 8 spaced apart, and "convex" shaped mounting blocks 9 are provided corresponding to the mounting grooves 8. The mounting blocks 9 are embedded in the mounting grooves 8, and the rotating lifting ring 5 is mounted on the mounting blocks 9. Figure 4 As shown.

[0034] Specifically, a "convex-shaped embedding groove" is opened at certain intervals along the length of the main lifting beam. Each embedding groove exists independently, and the complete flange structure is preserved between the grooves.

[0035] The bottom of the mounting block 9 is designed as a "convex plug" that matches the mounting groove 8. After the mounting block 9 is embedded in the mounting groove 8, it is fixed by bolts. At the same time, the mating surface of the convex head of the mounting block 9 and the convex head groove forms a mechanical limit.

[0036] The slide 3 structure in Embodiment 1 is suitable for scenarios involving the lifting of various types of heavy objects with significant differences in center of gravity, and is especially suitable for lifting medium-weight objects. When the lifting frequency is high and the lifting point position needs to be adjusted frequently, its flexible sliding adjustment feature can improve operational efficiency. Although it may have a slight impact on the flange load-bearing capacity, it can still meet the usage requirements under medium loads.

[0037] The mounting slot 8 structure in Embodiment 2 is suitable for scenarios where the type of lifted object is relatively fixed and the weight is large, and is also suitable for situations where lifting safety requirements are extremely high. It has minimal weakening of the flange load-bearing capacity, can withstand large concentrated loads, and has strong stability due to the preset fixed points combined with mechanical limits and bolt fixation, which can prevent accidental slippage; however, the adjustment range is relatively limited.

[0038] If there are both fixed heavy objects and temporary light loads on site, a "hybrid design" can be used on the same lifting beam: the middle section is opened with an embedded installation groove 8 (for lifting heavy load fixed objects), and the two ends are opened with short sliding grooves 3 (for lifting temporary light loads), which can take into account both scenarios.

[0039] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0040] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0041] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A downhole lifting device, characterized in that, include: The system comprises a first lifting beam, a second lifting beam, a liner plate, and a rotating lifting ring. The connecting ends of the first and second lifting beams are respectively provided with interfaces forming beveled surfaces. The protruding interface of the second lifting beam is inserted into the grooved interface of the first lifting beam to form a main lifting beam, and the interface is located at the midpoint of the main lifting beam. The liner plate is respectively provided on the side of the main lifting beam corresponding to the interface. The rotating lifting ring is movably installed on the first and second lifting beams.

2. The downhole lifting device according to claim 1, characterized in that, The first and second lifting beams are provided with sliding grooves, and a slider is slidably connected in the sliding grooves. The rotating lifting ring is installed on the slider.

3. The downhole lifting device according to claim 1, characterized in that, The first and second lifting beams are provided with mounting grooves spaced apart, and "convex" shaped mounting blocks are provided corresponding to the mounting grooves. The mounting blocks are embedded in the mounting grooves, and the rotating lifting ring is mounted on the mounting blocks.

4. The downhole lifting device according to claim 1, characterized in that, The cutting angle of the interface is 53°, and the length of the interface is 1 / 2 the width of the main lifting beam.

5. The downhole lifting device according to claim 1, characterized in that, Positioning holes are provided on the side walls corresponding to the interfaces of the first and second lifting beams, and positioning pins are inserted into the positioning holes.

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