Coal mine supporting device

Abstract

The utility model provides a coal mine supporting device. The coal mine supporting device comprises at least two sets of support sheds, each set of support shed is composed of a top beam and at least two supporting legs, and the at least two supporting legs are supported between the top beam and the roadway ground; the back plate covers the support shed and is located on the side, away from the supporting legs, of the top beam. One or more suspended beam structures are hung on every two adjacent top beams, each suspended beam structure comprises a first ring structure and a second ring structure which are detachably connected, the first ring structures and the second ring structures are provided with hanging holes, and when the suspended beam structures are hung on the top beams, the first ring structures and the second ring structures are connected through the hanging holes. Projections of the hanging holes of the first ring structure and the hanging holes of the second ring structure on each other are at least partially overlapped, and the hanging holes avoid the top beam; the forepoling bar is hung on the side, away from the back plate, of the top beam through a hanging beam structure. The coal mine supporting device solves the problem that in the prior art, safety and disassembly and assembly convenience of a coal mine supporting device are difficult to consider at the same time.

Description

Technical Field

[0001] This utility model relates to the field of coal mining equipment technology, and more specifically, to a coal mine support device. Background Technology

[0002] Due to complex geological conditions, coal mine roadways often feature fractured and broken roofs with poor stability. Roof rocks are prone to detachment and injury, posing a serious threat to the safety of miners underground. Therefore, it is essential to strengthen roadway roof support to eliminate the risk of roof collapse.

[0003] Coal mine roadway excavation faces are equipped with coal mine support devices. Current coal mine support devices typically consist of main beams and secondary beams, with support cylinders installed under the main beams and secondary beams to provide timely roof protection. However, such devices require hydraulic power from a hydraulic pump station, are relatively heavy, and involve a large amount of disassembly and assembly work. Furthermore, for situations with short excavation lengths and small cross-sections, it may be necessary to widen the roadway, and transportation is difficult, making it hard to guarantee safety.

[0004] In other words, existing coal mine support devices suffer from the problem of simultaneously failing to balance safety and ease of assembly / disassembly. Utility Model Content

[0005] The main objective of this invention is to provide a coal mine support device to solve the problem that existing coal mine support devices cannot simultaneously achieve both safety and ease of assembly and disassembly.

[0006] To achieve the above objectives, this utility model provides a coal mine support device, comprising: at least two sets of support canopies, each set consisting of a top beam and at least two legs, the at least two legs being supported between the top beam and the roadway floor, the top beams of the at least two sets of support canopies being parallel and spaced apart; a back plate, the back plate covering the support canopy and located on the side of the top beam away from the legs; multiple hanging beam structures, one or more hanging beam structures being hung on adjacent top beams respectively, the hanging beam structure including a detachably connected first ring structure and a second ring structure, both the first ring structure and the second ring structure having hook holes, when the hanging beam structure is hung on the top beam, the projections of the hook holes of the first ring structure and the second ring structure on each other at least partially overlap, and the hook holes avoid the top beam; a forward extending beam, the forward extending beam being hung on the side of the top beam away from the back plate via the hanging beam structure, the forward extending beam passing through the hook holes of the hanging beam structure and being perpendicular to the top beam, one end of the forward extending beam extending towards the direction close to the tunneling face.

[0007] Furthermore, the first ring structure has an L-shaped cross-section perpendicular to the top beam, and the first ring structure has a U-shaped cross-section parallel to the top beam; and / or the second ring structure has a U-shaped cross-section.

[0008] Furthermore, the hanging beam structure also includes pins. The first ring structure and the second ring structure are detachably connected by pins. The two ends of the first ring structure have oppositely arranged first pin holes, and the two ends of the second ring structure have oppositely arranged second pin holes. The pins pass through the first pin holes and the second pin holes to connect the first ring structure and the second ring structure to form a U-shaped ring structure.

[0009] Furthermore, the distance between the two second pin holes is less than the distance between the two first pin holes.

[0010] Furthermore, two hanging beam structures are spaced apart on the same top beam of two adjacent top beams. The two hanging beam structures on one top beam of two adjacent top beams correspond one-to-one with the two hanging beam structures on the other top beam. The front extension beam includes at least two beams, and the two sets of hanging beam structures are respectively supported by one front extension beam.

[0011] Furthermore, the front beam and the back plate are spaced apart. The coal mine support device also includes a wooden strip structure. The wooden strip structure is erected on the part of the front beam that extends toward the tunneling face and is located on the side of the front beam that faces the back plate. The wooden strip structure is perpendicular to the front beam. The coal mine support device also includes a fixing component. The wooden strip structure is connected to the back plate through the fixing component.

[0012] Furthermore, the coal mine support device also includes an additional support shed, which is supported between the back plate and the roadway floor and located on the side of the wooden strip structure facing the tunnel face.

[0013] Furthermore, the coal mine support device also includes multiple longitudinal backplate structures. These longitudinal backplate structures are spaced apart on the wooden strip structure along its length and are located on the side of the wooden strip structure facing the backplate. The longitudinal backplate structures are perpendicular to the wooden strip structure, and the length of the longitudinal backplate structure is greater than the distance between the added support shed and the adjacent support shed.

[0014] Furthermore, the ratio of the length of the timber strip structure to the length of the top beam is greater than or equal to 0.7 and less than or equal to 0.85; and / or the distance B3 between the side surface of the timber strip structure away from the tunneling face and the adjacent support shed is greater than or equal to 500 mm and less than or equal to 600 mm.

[0015] Furthermore, the ratio of the length of the forward beam to the spacing between the two adjacent sets of support canopies is greater than or equal to 2.5 and less than or equal to 3.5; the distance B2 from the end of the forward beam facing the excavation face to the support canopy closest to it is greater than or equal to 700mm and less than or equal to 900mm; the distance B1 between two adjacent legs is greater than or equal to 9000mm and less than or equal to 11000mm.

[0016] According to the technical solution of this utility model, the coal mine support device includes at least two sets of support canopies, a back plate, multiple hanging beam structures, and a forward-extending beam. Each set of support canopies consists of a top beam and at least two legs, with the at least two legs supporting the top beam between the top beam and the roadway floor. The top beams of the at least two sets of support canopies are parallel and spaced apart. The back plate covers the support canopy and is located on the side of the top beam away from the legs. One or more hanging beam structures are respectively hung on two adjacent top beams. The hanging beam structure includes a detachably connected first ring structure and a second ring structure. Both the first ring structure and the second ring structure have hook holes. When the hanging beam structure is hung on the top beam, the projections of the hook holes of the first ring structure and the second ring structure on each other are at least partially overlapped, and the hook holes avoid the top beam. The forward-extending beam is hung on the side of the top beam away from the back plate through the hanging beam structure. The forward-extending beam passes through the hook holes of the hanging beam structure and is set perpendicular to the top beam. One end of the forward-extending beam extends towards the direction close to the tunneling face.

[0017] At least two outriggers support the roof beam between it and the roadway floor, thus providing support for the roof beam. By designing a roof beam supported by at least two outriggers, the stability of the roof beam is ensured. Furthermore, by designing at least two sets of support canopies and placing a backplate on top of these canopies, the support canopies effectively support the backplate. This allows the backplate to prevent delamination or collapse of the roadway roof, creating a safe working space for operators within the roadway.

[0018] By setting up a hanging beam structure and planning the hanging beam structure to include a detachable first ring structure and a second ring structure, it is beneficial to ensure the detachability of the hanging beam structure, thereby improving the efficiency of the hanging beam structure's assembly and disassembly, and greatly enhancing the ease of use. Simultaneously, both the first and second ring structures are designed with mounting holes. When the hanging beam structure is hung on the top beam, the projections of the mounting holes of the first and second ring structures on each other at least partially overlap, and the mounting holes avoid the top beam. This allows the two mounting holes of the hanging beam structure to allow the forward extension beam to pass through, thus enabling the forward extension beam to be hung below the top beam via the hanging beam structure. When installing the forward extension beam, it is passed sequentially through the mounting holes of the hanging beam structure on two adjacent top beams, and the overlap position of the forward extension beam is adjusted as needed. This ensures the installation stability of the forward extension beam and allows for flexible adjustment of the extension length of the forward extension beam from the support canopy towards the tunneling face, facilitating the installation of the next support canopy. This ensures that the tunneling work can be carried out under the protection of the coal mine support device, effectively controlling the state of the back plate, eliminating unsupported operations at the tunneling face, ensuring construction safety, and improving disassembly and assembly efficiency. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 A top view of a coal mine support device according to an alternative embodiment of the present invention is shown;

[0021] Figure 2 It shows Figure 1 A cross-sectional view of the coal mine support device along the AA direction;

[0022] Figure 3 It shows Figure 1 A structural diagram of the suspended beam structure in the diagram;

[0023] Figure 4 It shows Figure 1 A schematic diagram of the forward beam in the middle;

[0024] Figure 5 It shows Figure 4 A cross-sectional view of the forward-probing beam in the middle;

[0025] Figure 6 It shows Figure 1 A schematic diagram of the wooden strip structure in the diagram;

[0026] Figure 7 It shows Figure 6 A cross-sectional view of the wooden strip structure.

[0027] The above figures include the following reference numerals:

[0028] 11. Top beam; 12. Support leg; 20. Back plate; 30. Hanging beam structure; 31. First ring structure; 311. First pin hole; 32. Second ring structure; 321. Second pin hole; 33. Hanging hole; 34. Pin; 40. Front probe beam; 50. Wooden strip structure; 60. Longitudinal back plate structure; 70. Additional support shed; 80. Tunneling face. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0032] To address the challenge of simultaneously balancing safety and ease of assembly / disassembly in existing coal mine support devices, this invention provides a coal mine support device. Since the roof of coal seams in tunneling faces is often fragmented, delamination and collapse are prone to occur after blasting. For safe production, this coal mine support device is provided, primarily for face support in roadways with I-beam supports. It can be used in coal roadways, semi-coal-rock roadways, and incline / uphill tunneling.

[0033] like Figures 1 to 7 As shown, the coal mine support device includes at least two sets of support canopies, a back plate 20, multiple hanging beam structures 30, and a forward extension beam 40. Each set of support canopies consists of a top beam 11 and at least two support legs 12. The at least two support legs 12 are supported between the top beam 11 and the roadway floor. The top beams 11 of the at least two sets of support canopies are parallel and spaced apart. The back plate 20 covers the support canopy and is located on the side of the top beam 11 away from the support legs 12. One or more hanging beam structures 30 are respectively hung on two adjacent top beams 11. The hanging beam structure 30 includes a detachably connected first ring structure 31 and a second ring structure. Structure 32, the first ring structure 31 and the second ring structure 32 both have hanging holes 33. When the hanging beam structure 30 is hung on the top beam 11, the projections of the hanging holes 33 of the first ring structure 31 and the hanging holes 33 of the second ring structure 32 on each other are at least partially coincident, and the hanging holes 33 avoid the top beam 11. The forward beam 40 is hung on the side of the top beam 11 away from the back plate 20 through the hanging beam structure 30. The forward beam 40 passes through the hanging holes 33 of the hanging beam structure 30 and is set perpendicular to the top beam 11. One end of the forward beam 40 extends toward the direction close to the tunneling face 80.

[0034] At least two outriggers 12 support the roof beam 11 between it and the roadway floor, thus providing support for the roof beam 11. By designing a roof beam 11 supported by at least two outriggers 12, the stability of the roof beam 11 is ensured. Furthermore, by designing at least two sets of support canopies and covering the backplate 20 with it, the support canopies effectively support the backplate 20, enabling the backplate 20 to prevent delamination or collapse of the roadway roof. This allows the coal mine support system to create a safe working space for operators within the roadway.

[0035] By setting up a hanging beam structure 30 and planning that the hanging beam structure 30 includes a detachably connected first ring structure 31 and a second ring structure 32, it is beneficial to ensure the detachability of the hanging beam structure 30, thereby improving the efficiency of disassembly and assembly and greatly enhancing its ease of use. Simultaneously, both the first ring structure 31 and the second ring structure 32 are designed to have mounting holes 33. When the hanging beam structure 30 is hung on the top beam 11, the projections of the mounting holes 33 of the first ring structure 31 and the second ring structure 32 on each other at least partially overlap, and the mounting holes 33 avoid the top beam 11, allowing the two mounting holes of the hanging beam structure 30 to allow the front extension beam 40 to pass through. This allows the front extension beam 40 to be hung below the top beam 11 via the hanging beam structure 30. When installing the front extension beam 40, it is passed sequentially through two adjacent top beams. The hanging beam structure 30 on the 11 has a hanging hole 33, and the overlapping position of the front extension beam 40 can be adjusted according to the needs. On the one hand, it can ensure the installation stability of the front extension beam 40, and on the other hand, it can flexibly adjust the extension length of the front extension beam 40 from the support canopy toward the tunneling face 80, thereby facilitating the installation of the next support canopy. This ensures that the tunneling work can be carried out under the protection of the coal mine support device in a timely manner, effectively controlling the state of the back plate 20, eliminating the situation of unsupported operation at the tunneling face 80, ensuring the safety of construction, and improving the efficiency of disassembly and assembly.

[0036] like Figure 1 and Figure 2 As shown in the specific embodiment of this application, at least two sets of support sheds are provided, and each support shed consists of a top beam 11 and two support legs 12, with the two support legs 12 supporting the top beam 11 at intervals between it and the roadway floor. Adjacent sets of support sheds are arranged parallel and at intervals. Figure 1 Three sets of support sheds are shown, but in actual applications, at least two sets of support sheds are required. The number of support sheds can be set according to actual needs and is not limited to the two or three sets in this application. Two hanging beam structures 30 are spaced apart on the same top beam 11 of two adjacent sets of support sheds. These two hanging beam structures 30 are used to thread different front extension beams 40. The two hanging beam structures 30 on one top beam 11 of two adjacent top beams 11 correspond one-to-one with the two hanging beam structures 30 on the other top beam 11, forming two sets of corresponding hanging beam structures 30. There are at least two front extension beams 40. Each of the two sets of corresponding hanging beam structures 30 supports one front extension beam 40, so that the front extension beam 40 is perpendicular to the top beam 11, and the two top beams 11 and the two front extension beams 40 form a "#" shape. When the front extension beam 40 is hung on the hanging beam structure 30, the front extension beam 40 is parallel to the back plate 20.

[0037] Preferably, the distance between two hanging beam structures 30 on the same top beam 11 is equal to the distance between two hanging beam structures 30 correspondingly provided on different top beams 11 in two adjacent top beams 11, and the hanging beam structures 30 on two adjacent top beams 11 are symmetrically arranged.

[0038] like Figure 1 , Figure 4 and Figure 5 As shown, the front beam 40 is made of No. 10 channel steel. The ratio of the length of the front beam 40 to the distance between the two adjacent sets of support sheds is greater than or equal to 2.5 and less than or equal to 3.5. Preferably, the length of the front beam 40 is three times the distance between the two adjacent sets of support sheds. In a specific embodiment of this application, the length L1 of the front beam 40 is typically about 2.5m.

[0039] It should be noted that, Figure 1 and Figure 2 The diagram shows four hanging beam structures 30 and two forward extension beams 40. However, in practical applications, the number of hanging beam structures 30 and forward extension beams 40 can be appropriately increased according to actual needs. This application does not limit the number of hanging beam structures 30 and forward extension beams 40. However, it is necessary to ensure that one forward extension beam 40 is erected on two hanging beam structures 30 on two different top beams 11 to ensure the stable operation of the forward extension beam 40.

[0040] like Figure 2 As shown, the two forward-extending beams 40 can each extend a forward distance B2 towards the working face 80 via a set of two corresponding hanging beam structures 30 as support points. Specifically, the distance B2 from the end of the forward-extending beam 40 facing the working face 80 to the nearest support canopy is greater than or equal to 700mm and less than or equal to 900mm, preferably 800mm. Here, the nearest support canopy refers to the set of support canopies closest to the working face 80 among the two sets of support canopies supporting the forward-extending beam 40. By reasonably constraining the size of B2, it is beneficial to ensure the reliability of the forward-extending beam 40, facilitate the subsequent installation of other structures on it, and the installation of the front-end support canopy 70, while ensuring the support of the back plate 20 to the top of the roadway.

[0041] In a specific embodiment of this application, the distance C2 between the two forward beams 40 along the length of the top beam 11 is 1200mm. Of course, this value can be adjusted according to actual working conditions and requirements to ensure stable support of the two forward beams 40 for the subsequent wooden strip structure 50.

[0042] like Figure 3As shown, the first ring structure 31 has an L-shaped cross-section perpendicular to the top beam 11, and a U-shaped cross-section parallel to the top beam 11; the second ring structure 32 is U-shaped. As seen in the figure, the first ring structure 31 resembles an inverted L-shaped ring, essentially formed by bending a U-shaped ring perpendicularly along a direction parallel to the opening. The second ring structure 32 resembles a vertical ring. Both the first ring structure 31 and the second ring structure 32 are made of round steel with a diameter of 18mm-20mm. The mounting holes 33 of the first ring structure 31 and the second ring structure 32 are correspondingly arranged to allow the front probe beam 40 to pass through and overlap the bottom of the first ring structure 31 and the second ring structure 32.

[0043] Specifically, the hanging beam structure 30 also includes pins 34. The first ring structure 31 and the second ring structure 32 are detachably connected by pins 34. The two ends of the first ring structure 31 have opposing first pin holes 311, and the two ends of the second ring structure 32 have opposing second pin holes 321. Pins 34 pass through the first pin holes 311 and the second pin holes 321 to connect the first ring structure 31 and the second ring structure 32 to form a U-shaped ring structure. By designing the hanging beam structure 30 to consist of a detachable first ring structure 31 and a second ring structure 32, and achieving a detachable connection between the two through pins 34, it is beneficial to achieve rapid assembly and disassembly of the hanging beam structure 30, thereby improving the assembly and disassembly efficiency of the coal mine support device. Moreover, the hanging beam structure 30 has a relatively simple structure and a simple manufacturing process, reducing the overall cost of the device.

[0044] Specifically, the distance between the two second pin holes 321 is less than the distance between the two first pin holes 311. Specifically, the internal width of the second ring structure 32 is smaller than the internal width of the first ring structure 31. Thus, when installing the first ring structure 31 and the second ring structure 32, the two second pin holes 321 of the second ring structure 32 are placed between the two first pin holes 311 of the first ring structure 31. A pin 34 is used to pass through the first pin hole 311, the second pin hole 321, another second pin hole 321, and another first pin hole 311 in sequence to install the first ring structure 31 and the second ring structure 32. After the two are installed, the resulting hanging beam structure 30 is hung on the top beam 11. Its cross-section along the direction perpendicular to the top beam 11 is U-shaped, and the projections of the hanging holes 33 on both sides of the hanging beam structure 30 can avoid the top beam 11. Here, the hanging holes 33 mentioned above refer only to the holes in the hanging beam structure 30 that are actually used to hang the front probe beam 40, and do not refer to the entire through hole in the first ring structure 31 and the second ring structure 32.

[0045] Specifically, when the hanging beam structure 30 is hung on the top beam 11, the height of the hanging beam structure 30 in the extension direction of the support leg 12 is greater than the sum of the heights of the top beam 11 and the front extension beam 40 in the direction of the support leg 12. This allows the dimensions of the hanging beam structure 30 to be adapted to the dimensions of the front extension beam 40, facilitating its installation.

[0046] like Figure 1 and Figure 2 As shown, the front beam 40 and the back plate 20 are spaced apart. The coal mine support device also includes a wooden strip structure 50. The wooden strip structure 50 is erected on the part of the front beam 40 that extends toward the tunneling face 80 and is located on the side of the front beam 40 that faces the back plate 20. That is to say, the wooden strip structure 50 is provided on the part of the front beam 40 that extends toward the tunneling face 80 from the support shed closest to the tunneling face 80 on which it is mounted. The wooden strip structure 50 is parallel to the top beam 11 and perpendicular to the front beam 40.

[0047] Specifically, the distance B3 between the side surface of the wooden strip structure 50 furthest from the working face 80 and the adjacent support canopy on the right is greater than or equal to 500 mm and less than or equal to 600 mm, preferably 550 mm. By rationally planning B3, the position of the wooden strip structure 50 can be precisely controlled, facilitating subsequent operations and the installation of the additional support canopy 70 at the front end, thereby ensuring the stability and reliability of the coal mine support device.

[0048] In addition, the coal mine support device also includes fixing elements, and the wooden strip structure 50 is connected to the back plate 20 through the fixing elements. In a specific embodiment of this application, the fixing element is a wooden wedge, and the wooden strip structure 50 is wedged into the back plate 20 through the wooden wedge.

[0049] like Figure 6 and Figure 7 As shown, the wooden strip structure 50 is rectangular, and its cross-sectional shape along its length is square. In a specific embodiment of this application, the side length of the square is 120 mm. The ratio of the length of the wooden strip structure 50 to the length of the top beam 11 is greater than or equal to 0.7 and less than or equal to 0.85, preferably 0.8. The height of the wooden strip structure 50 is preferably 12 mm higher than that of the top beam 11, which helps to ensure the height of the top beam 11 and facilitates the erection of the wooden strip structure 50. The wooden strip structure 50 is made of lightweight wood.

[0050] like Figure 1 and Figure 2As shown, the coal mine support device also includes an additional support shed 70. The additional support shed 70 is supported between the back plate 20 and the roadway floor and is located on the side of the wooden strip structure 50 facing the tunneling face 80. The structure of the additional support shed 70 is the same as that of the aforementioned support shed, but the additional support shed 70 is a newly installed support shed between the tunneling face 80 and the support shed closest to it after the wooden strip structure 50 is installed in place. There can be one or more sets of additional support sheds 70, which can be added sequentially as the tunneling face 80 is continuously excavated, so that the tunneling work can be carried out under the protection of the coal mine support device in a timely manner, eliminating the possibility of working under an open roof at the tunneling face 80.

[0051] like Figure 1 As shown, the coal mine support device also includes multiple longitudinal backplate structures 60. Two adjacent longitudinal backplate structures 60 are spaced apart and arranged in parallel. The multiple longitudinal backplate structures 60 are spaced apart on the wooden strip structure 50 along the length direction of the wooden strip structure 50 and are located on the side of the wooden strip structure 50 facing the backplate 20. The longitudinal backplate structures 60 are perpendicular to the wooden strip structure 50. The length of the longitudinal backplate structure 60 is greater than the distance between the additional support shed 70 and the adjacent support shed. That is, the length of the longitudinal backplate structure 60 is greater than the distance between the additional support shed 70 and the support shed closest to the additional support shed 70.

[0052] In addition, the distance B1 between the two legs 12 of two adjacent sets of support canopies is greater than or equal to 9000 mm and less than or equal to 11000 mm, preferably 10000 mm. Reasonable planning of the spacing between adjacent sets of support canopies facilitates the uniform arrangement of multiple sets of support canopies, thereby enabling each support canopy to evenly distribute the force applied to it by the roadway or backplate 20, ensuring good support effect, support stability, and the reliability and safety of the coal mine support device.

[0053] In practical work, after blasting the tunneling face 80, the roof and sides of the tunneling face 80 are checked and loose rock and debris are removed. Four hanging beam structures 30 are then hung on the top beams 11 of the two sets of support sheds. Two forward-protruding beams 40 are fixed to the hanging beam structures 30 and secured with wooden wedges. After the forward-protruding beams 40 are fixed, wooden strip structures 50 are placed horizontally on them, leveled and upright. If the wooden strip structures 50 are lower than the height of the top beams 11, wooden boards can be used to raise the wooden strip structures 50 so that they are slightly higher than the top beams 11. Then, a new support shed is erected on the side closest to the tunneling face 80. Figure 1The section marked with a dotted line serves as the additional support canopy 70. Then, four longitudinal backplate structures 60 are placed on the wooden strip structure 50. The longitudinal backplate structures 60 are connected to the roof plate with backplates 20 perpendicular to them, and are firmly secured with wooden wedges. After installation, coal and gangue from the tunneling face 80 can be transported, and then the support leg recesses can be dug, new support canopies installed, and the process repeated to the next step. This ensures that the tunneling process is carried out under the protection of the coal mine support device, effectively controlling the roof and preventing unsupported operations at the tunneling face 80.

[0054] In summary, the coal mine support device of this application is suitable for small-section, short-distance blasting faces supported by I-beams. By setting up a detachable split structure for the hanging beam structure 30, the cross-section of the first ring structure 31 can pass through the top beam 11 and then be connected to the second ring structure 32 through the pin 34. If the coal seam above the top beam 11 comes into contact with the structure, the coal block squeezed on the pin hole side of the hanging beam structure 30 can be removed, the pin 34 can be pulled out, the hanging beam structure 30 can be disassembled, and the first ring structure 31 and the second ring structure 32 can be extracted for the next cycle of installation. The installation and disassembly are quick and convenient, so that the tunneling work can be carried out under the cover of the forward support in a timely manner, and the unsupported operation of the tunneling face 80 is eliminated.

[0055] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0056] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0057] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0058] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A coal mine support device, characterized in that, include: At least two sets of support sheds, each set of support sheds consists of a top beam (11) and at least two legs (12), the at least two legs (12) are supported between the top beam (11) and the roadway floor, the top beams (11) of the at least two sets of support sheds are parallel and spaced apart; A back plate (20) is provided on the support canopy and located on the side of the top beam (11) away from the support leg (12); Multiple hanging beam structures (30) are provided, with one or more hanging beam structures (30) respectively hanging on two adjacent top beams (11). Each hanging beam structure (30) includes a first ring structure (31) and a second ring structure (32) that are detachably connected. Both the first ring structure (31) and the second ring structure (32) have hanging holes (33). When the hanging beam structure (30) is hung on the top beam (11), the projections of the hanging holes of the first ring structure (31) and the second ring structure (32) on each other are at least partially coincident, and the hanging holes avoid the top beam (11). The front probe beam (40) is suspended on the side of the top beam (11) away from the back plate (20) by the hanging beam structure (30). The front probe beam (40) passes through the hanging hole (33) of the hanging beam structure (30) and is set perpendicular to the top beam (11). One end of the front probe beam (40) extends toward the direction close to the tunneling face (80).

2. The coal mine support device according to claim 1, characterized in that, The first ring structure (31) has an L-shaped cross-section perpendicular to the top beam (11), and the first ring structure (31) has a U-shaped cross-section parallel to the top beam (11); and / or The second ring structure (32) is U-shaped.

3. The coal mine support device according to claim 1, characterized in that, The hanging beam structure (30) also includes a pin (34). The first ring structure (31) and the second ring structure (32) are detachably connected by the pin (34). The two ends of the first ring structure (31) have oppositely arranged first pin holes (311), and the two ends of the second ring structure (32) have oppositely arranged second pin holes (321). The pin (34) passes through the first pin hole (311) and the second pin hole (321) to connect the first ring structure (31) and the second ring structure (32) to form a U-shaped ring structure.

4. The coal mine support device according to claim 3, characterized in that, The distance between the two second pin holes (321) is less than the distance between the two first pin holes (311).

5. The coal mine support device according to claim 1, characterized in that, Two hanging beam structures (30) are spaced apart on the same top beam (11) of two adjacent top beams (11). The two hanging beam structures (30) on one top beam (11) correspond one-to-one with the two hanging beam structures (30) on the other top beam (11). The front protruding beam (40) includes at least two beams. The two sets of hanging beam structures (30) are respectively supported by one front protruding beam (40).

6. The coal mine support device according to claim 1, characterized in that, The front probe beam (40) and the back plate (20) are spaced apart. The coal mine support device also includes a wooden strip structure (50). The wooden strip structure (50) is erected on the part of the front probe beam (40) that extends toward the tunneling face (80) and is located on the side of the front probe beam (40) that faces the back plate (20). The wooden strip structure (50) is perpendicular to the front probe beam (40). The coal mine support device also includes a fixing member. The wooden strip structure (50) is connected to the back plate (20) through the fixing member.

7. The coal mine support device according to claim 6, characterized in that, The coal mine support device also includes an additional support shed (70), which is supported between the back plate (20) and the roadway floor and located on the side of the wooden strip structure (50) facing the tunnel face (80).

8. The coal mine support device according to claim 7, characterized in that, The coal mine support device also includes multiple longitudinal backplate structures (60), which are spaced apart along the length of the wooden strip structure (50) and located on the side of the wooden strip structure (50) facing the backplate (20). The longitudinal backplate structures (60) are perpendicular to the wooden strip structure (50), and the length of the longitudinal backplate structure (60) is greater than the distance between the additional support shed (70) and the adjacent support shed.

9. The coal mine support device according to claim 6, characterized in that, The ratio of the length of the wooden strip structure (50) to the length of the top beam (11) is greater than or equal to 0.7 and less than or equal to 0.85; and / or The distance B3 between the side surface of the wooden strip structure (50) away from the tunneling face (80) and the adjacent support shed is greater than or equal to 500 mm and less than or equal to 600 mm.

10. The coal mine support device according to any one of claims 1 to 9, characterized in that, The ratio of the length of the front probe beam (40) to the distance between the two adjacent sets of support sheds is greater than or equal to 2.5 and less than or equal to 3.5; The distance B2 from the end of the front probe beam (40) facing the tunneling face (80) to the support shed closest to it is greater than or equal to 700 mm and less than or equal to 900 mm; The distance B1 between two adjacent legs (12) is greater than or equal to 9000 mm and less than or equal to 11000 mm.

Images