High adaptability air track shifting frame legless forepoling

Abstract

The application discloses a high-adaptability air track moving-frame legless advanced support, which comprises a top beam, the top beam comprises two or more cross beams, a plurality of longitudinal beams are overlapped on the cross beams, piston round steels are arranged at the two ends of the cross beams respectively, and the piston round steels are connected with jacks arranged in the cross beam bodies. The support supporting force is not dependent on the support column support, the advanced support air moving frame is realized, the current advanced support occupies large ground space, and the deficiencies of the moving frame mode are solved, and the demand of the modern mine working face advanced support is met.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of roadway advance support, in particular to a kind of high adaptability air track rackless advance support. BACKGROUND

[0002] Roadway advance support is one of the key factors affecting modern mine high yield and efficient mining, and there are clear provisions and requirements for roadway advance support in coal mine safety regulations and modern mine construction specifications. Various advance supports have been developed and applied by coal enterprises, coal machinery and equipment enterprises and research institutes, etc. in combination with the conditions of each mine, which has greatly improved the safety and labor efficiency of roadway support.

[0003] Prior art scheme one:

[0004] There are many types of current advance supports, including left and right two-column type advance supports, sliding type advance supports, unit type advance supports, portal type advance supports, pile type supports, offset type supports, etc. The general principle is to use the space outside the roadway installation equipment to set the base and the stand column to support the roof beam and maintain the roadway. However, with the development of high yield and efficient working face, the roadway space occupied by transportation, crushing, power and other equipment is gradually increasing, or due to special geological conditions, large cross-section roadway cannot be excavated, resulting in insufficient space for advance support and inability to achieve mechanized and intelligent support. Therefore, it is urgent to develop a new type of advance support that does not occupy ground space.

[0005] Prior art scheme two:

[0006] Current advance supports generally move the rack from front to back in one or two steps, which causes damage to the roadway roof due to repeated support. To solve the problem of repeated support of the roof by the advance support and avoid damage to the roof caused by repeated support, various rear-to-front rack moving methods have been developed by enterprises and research institutes to achieve long-distance advance support of the roadway, such as winch traction rack moving, rack moving by rack moving vehicle, single-track hoist rack moving, rack moving by rail car, etc. However, this rack moving method inevitably occupies ground space and is difficult to achieve non-repeated support in a small space roadway. Therefore, it is urgent to develop a new type of advance support that does not occupy ground space and can achieve air rack moving.

[0007] Therefore, the present application is proposed. SUMMARY

[0008] The purpose of the present application is to provide a high adaptability air track rackless advance support to solve the above technical problems in the prior art.

[0009] The purpose of the present application is achieved by the following technical solutions:

[0010] The high-adaptability air track moving-frame legless advanced support of the present application comprises a roof beam, the roof beam comprises two or more cross beams, a plurality of longitudinal beams are overlapped on the cross beams, piston round steels are arranged at the two ends of the cross beams respectively, and the piston round steels are connected with jacks arranged in the cross beam bodies.

[0011] Compared with the prior art, the high-adaptability air track moving-frame legless advanced support provided by the present application realizes that the support supporting force is not dependent on the support column support, realizes the air moving-frame of the advanced support, solves the problems of large ground space occupation and the deficiencies of the moving-frame mode of the current advanced support, and meets the needs of the advanced support of the modernized mine working face. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a support roof beam schematic diagram of the embodiment of the present application;

[0013] Figure 2 It is a support supporting force schematic diagram of the embodiment of the present application;

[0014] Figure 3a , Figure 3b It is an auxiliary lifting column schematic diagram of the embodiment of the present application respectively;

[0015] Figure 4a , Figure 4b It is a vertical position or horizontal retraction position schematic diagram of the column of the embodiment of the present application respectively;

[0016] Figure 5 It is a moving-frame mode schematic diagram of the advanced support of the embodiment of the present application;

[0017] Figure 6a , Figure 6b , Figure 6c It is a main view, side view and top view schematic diagram of the moving-frame double-track tramcar of the embodiment of the present application respectively;

[0018] Figure 7a , Figure 7b It is a side view and top view schematic diagram of the support carried by the moving-frame tramcar of the embodiment of the present application respectively.

[0019] In the drawings:

[0020] 1, cross beam, 2, longitudinal beam, 3, piston round steel, 4, auxiliary lifting column, 5, column fixed stop block, 6, column position adjusting jack, 7, moving-frame track, 8, moving-frame double-track tramcar, 9, advanced support. DETAILED DESCRIPTION

[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described; obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application, and do not constitute a limitation of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present application.

[0022] Firstly, the terms possibly used in the present application are described as follows:

[0023] The term "and / or" means either of the two or both, for example, X and / or Y means three cases including "X" or "Y" or "X and Y".

[0024] The terms "include", "contain", "have", "possess" or other similar semantic descriptions should be interpreted as non-exclusive inclusion. For example, including a technical feature element (such as raw materials, components, ingredients, carriers, dosage forms, materials, sizes, parts, components, mechanisms, devices, steps, processes, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products or articles, etc.) should be interpreted as not only including the explicitly listed technical feature element, but also including other technical feature elements not explicitly listed in the art.

[0025] The term "consisting of" means excluding any technical feature element not explicitly listed. If this term is used in the claims, the term will make the claim closed, so that it does not contain technical feature elements other than the explicitly listed technical feature elements, except for conventional impurities related thereto. If the term only appears in a certain clause of the claim, it is only limited to the elements explicitly listed in that clause, and the elements described in other clauses are not excluded from the overall claim.

[0026] Unless otherwise explicitly specified or limited, the terms "mount", "connect", "connect", "fix", and the like should be broadly understood, for example: it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] The terms "central", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of description and simplification of description, and do not mean that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting herein.

[0028] The contents not described in detail in the embodiments of the present application belong to the prior art known to those skilled in the art. If the specific conditions are not indicated in the embodiments of the present application, the conventional conditions or the conditions recommended by the manufacturer are used. If the reagents or instruments used in the embodiments of the present application are not indicated by the manufacturer, they are all conventional products that can be purchased on the market.

[0029] The high-adaptability air track shifting support legless advanced support of the present application comprises a top beam, the top beam comprises two or more cross beams, a plurality of longitudinal beams are overlapped on the cross beams, piston round steels are arranged at the two ends of the cross beams respectively, and the piston round steels are connected with jacks arranged in the cross beam bodies.

[0030] Two or more auxiliary lifting columns are arranged at the two sides of the top beam respectively, the auxiliary lifting columns adopt double telescopic or triple telescopic columns, and are provided with internal liquid supply pipes.

[0031] The columns are hinged with the top beam, column fixing blocks are arranged at the column heads connected with the top beam, and column positioning jacks fixed on the top beam adjust the columns to be in the vertical position or the horizontal retracted position by pushing the blocks.

[0032] The column positioning jacks are provided with hydraulic locks.

[0033] The top beam is provided with a leakage prevention device at the two sides or the whole top beam, and the support is provided with a side protection wall device.

[0034] The shifting mode of the advanced support adopts a rear support to front support non-repeated support shifting mode, the shifting track is fixed in the air at the two sides of the coal wall of the roadway, and a shifting double-track tractor is arranged on the shifting track.

[0035] The shifting double-track tractor adopts four-wheel front and rear double drive or front drive, and adopts a rail clamping type with the shifting track.

[0036] A square hole is reserved in the middle of the shifting double-track tractor for assisting the extension and retraction of the support column;

[0037] The middle part of the front and rear direction structure of the shifting double-track tractor is concave downward, and the support blocks are arranged in the left and right directions.

[0038] The frame-moving double-track tractor adopts a manual or remote control or intelligent control mode.

[0039] As can be seen from the above, the high-adaptability air track frame-moving leg-free advanced support of the embodiment of the application innovatively realizes that the support supporting force is not dependent on support column support, realizes air frame moving of the advanced support, solves the problems of large ground space occupation of the current advanced support and the deficiencies of the frame-moving mode, and meets the needs of advanced support of the modernized mine working face.

[0040] The principle adopted by the application is as follows:

[0041] 1) The advanced support top beam is connected to the top, and multiple round steels inserted into the coal wall of the roadway on the left and right sides provide passive supporting force.

[0042] 2) The advanced support adopts a double-track electric tractor to move the frame, and the track is arranged on the coal wall on the two sides of the roadway.

[0043] 3) The advanced support adopts a large extension ratio column to assist in connecting to the top and lowering the frame, and is retracted into the top beam body when not in use.

[0044] In order to more clearly show the technical solutions provided by the application and the technical effects generated, the following describes the in detail with specific embodiments.

[0045] Embodiment 1

[0046] 1, support top beam:

[0047] As shown in the drawings, two or more cross beams are adopted, and multiple longitudinal beams are lapped on the cross beams, and the number of longitudinal beams is determined according to the width of the roadway and the arrangement of the anchor rod and anchor cable of the roadway roof. Figure 1 2, support force of the support:

[0048] As shown in the drawings, passive supporting force is provided by multiple round steels inserted into the coal wall of the roadway on the left and right sides of the support. The jacks are arranged in the beam body on the left and right sides of the top beam cross beam, and high hydraulic pushing and pulling force is used to realize the insertion and withdrawal of the piston round steel into the coal wall of the roadway.

[0049] Figure 2 3, as shown in the drawings,

[0050] Each advanced support is provided with 2 or more auxiliary lifting columns on the two sides near the coal wall. Figure 3a Figure 3b 4, the column adopts an internal circulation liquid supply column to minimize the exposed liquid supply pipe. According to the need for matching space, a double- or triple- telescopic column (patent of Beimei Coal Machine) can be used to ensure a large telescopic ratio of the column, and the length of the retracted column is shortened as much as possible.

[0051] 5, as shown in the drawings,

[0052] 6, as shown in the drawings, Figure 4a Figure 4b ​​​As shown, a column fixing block is installed at the column head connected to the top beam. The column adjustment jack, fixed to the top beam, adjusts the column to a vertical or horizontal retracted position by pushing the block. After the support frame is properly anchored to the top or has reached the bottom, the column is fully retracted. The retracted column is then adjusted to a horizontal position by extending the column adjustment jack. The column adjustment jack is equipped with a hydraulic lock.

[0053] 6. For example Figure 5 As shown, the advanced support is moved using a rear-to-front frame relocation method without repeated support. A double-rail tram or battery-powered vehicle is used for the relocation, with the tracks fixed to the sides of the coal face in the roadway, ensuring that the relocation does not affect any ground-mounted equipment within the roadway.

[0054] 7. For example Figure 6a , Figure 6b , Figure 6c As shown, the moving double-track tram adopts a four-wheel front and rear dual-drive or front-drive configuration; to ensure transportation safety, a rail-clamping type is used; a square hole is reserved in the middle of the rail-clamping vehicle to facilitate the extension and retraction of the auxiliary support column; the middle of the front and rear structure of the transport vehicle is recessed, and blocks are set in the left and right directions to ensure the stability and reliability of the support during transportation.

[0055] 8. The moving vehicle carries the support frame, such as Figure 4a , Figure 4b As shown, the moving double-track tram can be controlled manually, remotely, or intelligently.

[0056] The beneficial effects of the technical solution of this invention are as follows:

[0057] This solution addresses the issue of non-repeating support in advance support for return airways and transport roadways, preventing damage to the roadway roof from advance support. This is particularly crucial for roadways in rockburst-prone working faces, where, according to coal mine safety regulations, advance support distances exceeding 70 meters are required; without non-repeating support, the integrity of the roadway roof cannot be guaranteed. Current non-repeating support methods for moving supports often employ single-track moving, bottom-track moving, bottom-traction moving, and transport vehicle moving, which are difficult to implement when equipment is located within the roadway, especially in transport roadways where this problem remains unresolved. This solution, however, enables aerial support moving, effectively solving this challenge.

[0058] This solution achieves legless support for the advanced support system, without occupying ground space in the roadway. Especially in situations where special geological conditions prevent the excavation of large-section roadways, or where the equipment within the roadway is large and the available space is limited, leaving insufficient room to install the advanced support system, or where there is insufficient safe pedestrian access after installation, this solution effectively solves these problems by using auxiliary columns for support and then completely retracting them. Furthermore, the use of the advanced support system in this solution allows for the intentional reduction of the roadway cross-section, decreasing the workload and time required for face preparation and improving coal seam mining efficiency.

[0059] The advance support does not need to be provided with a base and a stabilizing mechanism, and has small space occupation, light weight and low cost.

[0060] The advance support is arranged in cooperation with the equipment in the roadway, has little influence relation with the height of the roadway, has little influence relation with the geological condition of the floor of the roadway, and is only related to the width of the roadway, so that the advance support has strong universality and applicability.

[0061] The top beam of the advance support is in the form of a strip-shaped beam, which is beneficial to avoid the anchor rod and anchor cable, and is more beneficial to maintain the integrity of the roof.

[0062] In summary, the advance support is an advance support capable of realizing non-repeated support and long-distance advance support, is an advance support capable of adapting to the advance support of the impact pressure roadway and the broken roof roadway, and is an advance support with high adaptability and high universality capable of adapting to the roadway with small ground space and the roadway with different heights.

[0063] In the specific implementation, the following alternative solutions can be adopted:

[0064] The advance support is provided with a leakage prevention device on both sides of the top beam or the whole top beam, or other top beam structure forms.

[0065] The advance support is provided with a side protection wall device or other auxiliary devices.

[0066] The advance support is provided with a lifting arm or other auxiliary support lifting devices.

[0067] A diesel vehicle or other support moving device is adopted.

[0068] The advance support is provided with a spiral drill or other means to provide passive support force for the part inserted into the coal wall, or the side thrust of the support is used to provide support force for the support by using friction and wedge support force.

[0069] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, and any change or replacement easily thought of by those skilled in the art within the technical range disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims. The information disclosed in the background section of the present application is only intended to deepen the understanding of the general background of the present application, and should not be regarded as acknowledging or implying in any form that the information constitutes the prior art known to those skilled in the art.

Claims

1. A highly adaptive over-the-air rail gantry legless lead support, characterized in that, The roof beam comprises two or more cross beams, and multiple longitudinal beams are overlapped on the cross beams, and piston round steels are arranged at two ends of the cross beams respectively and connected with jacks arranged in the cross beam body; Two or more auxiliary lifting columns are arranged on both sides of the roof beam, the auxiliary lifting columns adopt double telescopic or triple telescopic columns, and an internal liquid supply pipe is arranged in the auxiliary lifting columns; The column is hinged with the roof beam, and a column fixing block is arranged at the column head connected with the roof beam, a column positioning jack fixed on the roof beam adjusts the column to be in a vertical position or a horizontal retracted position by pushing the block; A leakage prevention device is arranged on both sides of the roof beam or the entire roof beam, and a side protection wall device is arranged on the support; The moving mode of the forepoling support adopts a rear support to front support non-repeated support moving mode, and a moving track is fixed in the air on both sides of the coal wall of the roadway, and a moving double-track tractor is arranged on the moving track; The moving double-track tractor adopts four-wheel front and rear double drive or front drive, and adopts a clamping track type with the moving track; A square hole is reserved in the middle of the moving double-track tractor for auxiliary support of the column extension and retraction; The middle part of the moving double-track tractor is concave in the front and rear direction structure, and support blocks are arranged in the left and right direction.

2. The highly adaptive aerial rail gantry legless lead support of claim 1, wherein, The column positioning jack is provided with a hydraulic lock.

3. The highly adaptive aerial track-shifting legless lead support according to claim 2, wherein, The moving double-track tractor adopts a manual or remote control or intelligent control mode.

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