Supporting device for coal mine roadway

Abstract

The application provides a supporting device for a coal mine tunnel, which comprises a roof, a first plug-in part arranged at the bottom end of the roof, vertical plates arranged at two ends of the roof respectively, second plug-in parts arranged at the top ends of the vertical plates, the second plug-in parts being in plug-in cooperation with the first plug-in part, and fixing rods penetrating through the second plug-in parts and the first plug-in part to connect the roof and the vertical plates. The roof and the vertical plates are connected in a plug-in mode, the fixing rods penetrating through the roof and the vertical plates can realize quick positioning of the installation of the roof and the vertical plates, ensure a stable connection relationship, effectively reduce the number of bolts, simplify the connection mode, and improve the supporting efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine production technology, and specifically relates to a support device for coal mine roadways. Background Technology

[0002] Coal mine roadways are vital passageways used for transportation, ventilation, drainage, and pedestrian access in underground mining operations, and their stability directly affects the safety of mining operations. During roadway excavation, support devices must be used to reinforce the roadway roof and sidewalls to prevent collapse accidents.

[0003] However, in existing support operations, multiple components need to be assembled on-site and secured with a large number of bolts, increasing the number of steps and time costs for workers. The large number of bolts also slows down installation, making it difficult to meet the demands of rapid support in complex downhole environments. Frequent handling of components and tightening of bolts can lead to excessive physical exertion for workers, affecting overall operational efficiency. These areas requiring improvement mainly stem from the unreasonable design of the existing support structure, which fails to simplify the connection methods, resulting in reliance on excessive fasteners to secure components.

[0004] Therefore, it is necessary to design a support device for coal mine roadways to reduce the number of fasteners used and improve construction efficiency. Utility Model Content

[0005] To address some or all of the aforementioned technical problems in the existing technology, this utility model proposes a support device for coal mine roadways. This support device for coal mine roadways simplifies assembly and improves construction efficiency.

[0006] According to this utility model, a support device for coal mine roadways is provided, comprising:

[0007] A top plate, on the bottom end of which a first connector is provided.

[0008] The top of each of the two vertical plates located at both ends of the top plate is provided with a second connector, which engages with the corresponding first connector.

[0009] A fixing rod passes through the second connector and the first connector to connect to the top plate and the vertical plate.

[0010] In one embodiment, the first connector is constructed as a protrusion, the second connector is constructed as an inner groove that matches the protrusion, and the fixing rod is constructed as a first connecting bolt.

[0011] In one embodiment, both the protrusion and the groove have square cross-sections.

[0012] In one embodiment, a side support is provided between the side of the top plate and the side of the vertical plate, and the side support is connected to the fixing rod.

[0013] In one embodiment, a base is provided at the bottom end of each of the uprights, and a height adjustment component is provided between the base and the upright.

[0014] In one embodiment, the height adjustment assembly is configured as a lead screw mechanism, which includes a lead screw and a nut assembly that matches the lead screw. The lead screw is rotatably connected to the upright plate and extends axially along the vertical direction of the upright plate. The nut assembly is fixed to a movable block, and the movable block is fixedly connected to the base.

[0015] In one embodiment, a mounting groove is provided on the upright plate, the movable block is inserted into the mounting groove in a matching manner, the lead screw extends in the mounting groove, and a cross plate for the lead screw to pass through is provided in the mounting groove.

[0016] In one embodiment, a limit mechanism is provided between the top of the lead screw and the vertical plate.

[0017] In one embodiment, the lead screw is segmented and includes a first segment and a second segment, wherein the first segment and the second segment are axially telescopically connected and circumferentially engaged; the limiting mechanism includes a first engaging tooth disposed on the outer wall of the top end of the lead screw and a second engaging tooth disposed on the vertical plate, wherein the second engaging tooth is engaged with the first engaging tooth.

[0018] In one embodiment, a receiving groove is provided on the top surface of the first segment, the bottom end of the second segment is fitted into the receiving groove, a third engaging tooth is provided on the inner wall of the receiving groove, and a fourth engaging tooth is provided on the outer wall of the second segment, the fourth engaging tooth being engaged with the third engaging tooth.

[0019] Compared with the prior art, the advantages of this utility model are: the top plate and the vertical plate are connected by plugging, and the fixing rod passes through the top plate and the vertical plate, which can quickly position the installation of the top plate and the vertical plate and ensure a stable connection. It can also effectively reduce the number of bolts used, simplify the connection method, and improve the support efficiency. Attached Figure Description

[0020] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings, in which:

[0021] Figure 1 A support device for a coal mine roadway according to an embodiment of the present invention is shown;

[0022] Figure 2The diagram shows the connection relationship between the top plate and the vertical plate of a support device for a coal mine roadway according to an embodiment of the present invention.

[0023] Figure 3 The connection relationship between the vertical plate and the base of a support device for a coal mine roadway according to an embodiment of the present invention is shown.

[0024] Figure 4 for Figure 3 Enlarged view of point A.

[0025] In the accompanying drawings, the same parts are labeled with the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0026] To make the technical solution and advantages of this utility model clearer, the exemplary embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not an exhaustive list of all embodiments. Furthermore, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0027] An embodiment of this utility model provides a support device for coal mine roadways. For example... Figures 1 to 4 As shown, the support device for coal mine roadways includes a roof plate 1, vertical plates 5, and fixing rods 3. The roof plate 1 is a strip-shaped component used for the roof of conformal coal mine roadways, such as an arc-shaped plate. Vertical plates 5 are located at both ends of the roof plate 1 to support it. It is easy to understand that there are two vertical plates 5 corresponding to one roof plate 1, used to support the roof plate 1 at both ends. A first connector 9 is provided at the bottom end of the roof plate 1. A second connector 8 is provided at the top end of the vertical plate 5. The second connector 8 is used to engage with the first connector 9, thereby defining the roof plate 1 and the vertical plates 5. The fixing rods 3 pass through the second connector 8 and the first connector 9 to connect with the roof plate 1 and the vertical plates 5.

[0028] Therefore, in this application, the mating structure of the connectors 8 and 9 with the fixing rod 3 enables rapid assembly of the top plate 1 and the vertical plate 5, simplifying the downhole installation process, eliminating the need for complex welding or bolt fixing, significantly shortening the construction cycle and reducing labor costs. The connectors 8 and 9, together with the fixing rod 3, form a rigid connection, enhancing shear resistance and preventing lateral displacement or loosening of the vertical plate 5.

[0029] In one embodiment, the first connector 9 is constructed as a protrusion. Simultaneously, the second connector 8 is constructed as a recess. The protrusion can be inserted into the recess for a mating connection. This plug-in construction eliminates the need for welding or complex positioning; alignment of the protrusion and recess allows for rapid assembly, reducing construction difficulty and time costs. The fixing rod 3 is constructed as a first connecting bolt. Preferably, both the protrusion and the recess have square cross-sections. The square cross-section of the protrusion, in conjunction with the recess, effectively restricts rotational displacement. After being locked in place by the stud on the fixing rod 3, a rigid node is formed, exhibiting significantly better shear resistance than a circular cross-section design. The square cross-section requires lower machining precision than irregularly shaped structures, resulting in lower production costs and easier implementation.

[0030] Side bracing members 2 are provided between the side of the top plate 1 and the side of the upright plate 5. A fixing rod 3 is connected to one end of the side bracing member 2. Specifically, connecting holes 19 are provided at both ends of the side bracing member 2. During installation, a first connecting bolt passes through the connecting hole 19 at the end connected to the upright plate 5, connecting the side bracing member 2 to the top plate 1 and the upright plate 5. The other end of the side bracing member 2 is fixed to the top plate 1 by, for example, a second connecting bolt 22. Two side bracing members 2 are provided on one side of the top plate 1. One end of these two side bracing members 2 is connected to the general middle part of the top plate 1, and the other end is connected to the side of the upright plate 5 at both ends of the top plate 1. Thus, a total of four side bracing members 2 are provided on the two sides of the top plate 1. The second connecting bolt 22 can pass through the side bracing members 2 located at the same end on the two sides in sequence, so only two second connecting bolts 22 are needed to connect these four side bracing members 2 to the top plate 1. The side brace 2 is rigidly connected to the top plate 1 and the vertical plate 5 via connecting bolts, forming a triangular support structure that significantly improves the overall resistance to lateral loads. Pre-set connecting holes 19 enable rapid positioning, and the bolt tightening process requires no welding or complex calibration, reducing manual operation errors and labor costs. It is easy to understand that the connecting hole 19 can be designed as an elongated hole or an array of holes, allowing for fine-tuning of the side brace 2's position to accommodate the combination of the top plate 1 and the vertical plate 5 at different inclination angles or spacings.

[0031] A base 6 is installed at the bottom of each vertical plate 5. This base 6 rests on the floor wall of the coal mine roadway, supporting the vertical plate 5 and thus the roof slab 1. A height adjustment component is installed between the base 6 and the vertical plate 5 to adjust the height of the roof slab 5 from the floor wall of the coal mine roadway. By installing the height adjustment component, the distance between the roof slab 1 and the roadway floor wall can be precisely adjusted to adapt to different coal seam thicknesses or roadway deformation requirements, solving the problem of insecure roof connection caused by the fixed height of traditional support structures. Furthermore, the base 6 increases the load-bearing area of ​​the vertical plate 5, evenly distributing concentrated loads to the roadway floor, preventing localized crushing, and is particularly suitable for soft rock or fractured floor conditions.

[0032] Preferably, the height adjustment assembly is constructed as a lead screw mechanism. The lead screw mechanism includes a lead screw 10 and a nut assembly that matches the lead screw 10. The lead screw 10 is rotatably connected to the vertical plate 5. The lead screw 10 extends axially along the vertical direction of the vertical plate 5. The nut assembly is constructed as a movable block 12, which is threadedly connected to the lead screw 10. Simultaneously, the movable block 12 is fixedly connected to the base 6. With the above configuration, during the rotation of the lead screw 10, the movable block 12 can be driven to move vertically, thereby causing the base 6 to rise and fall vertically. In this application, height adjustment is achieved through a lead screw mechanism, utilizing the advantages of a lead screw transmission mechanism. Through the precise correspondence between the rotation angle and linear displacement, millimeter-level height adjustment accuracy can be achieved, meeting the stringent requirements of roadway support for the flatness of the roof support surface 1.

[0033] A mounting groove 11 is provided on the upright plate 5. A movable block 12 is inserted into the mounting groove 11 in a matching manner. The movable block 12 and the mounting groove 11 are vertically slidably connected. A lead screw 10 extends within the mounting groove 11. A horizontal plate 18 is provided within the mounting groove 11 for the lead screw 10 to pass through. The mounting groove 11 provides a guiding function for the movable block 12, ensuring a stable vertical movement trajectory. The horizontal plate 18 within the mounting groove 11 serves as a through-channel for the lead screw 10, both limiting and protecting the lead screw 10 and optimizing space utilization, simplifying the overall structural layout.

[0034] A limiting mechanism is provided between the top of the lead screw 10 and the vertical plate 5. Specifically, the lead screw 10 is segmented and includes a first segment 15 and a second segment 17. The first segment 15 and the second segment 17 are axially telescopically connected and circumferentially engaged, with the first segment 15 located at the lower end of the second segment 17. The axial telescopic movement of the segmented lead screw 10 allows for height adjustment, and the circumferential engagement ensures that the first segment 15 and the second segment 17 can rotate together, ensuring the overall rotation of the lead screw 10. The limiting mechanism includes a first engaging tooth 4 disposed on the outer wall of the top of the lead screw 10 and a second engaging tooth 13 disposed on the vertical plate 5. The second engaging tooth 13 is engaged with the first engaging tooth 4. During operation, when the second segment 17 is lifted, because the first segment 15 and the second segment 17 are axially telescopically connected and circumferentially engaged, the second segment 17 rises vertically relative to the first segment 15. The first engaging tooth 4 on the lead screw 10 rises with the second segment 17, disengaging from the second engaging tooth 13, thus unlocking the limiting mechanism. At this point, the lead screw 10 can be turned, causing the movable block 12 to move vertically, thereby adjusting the height of the base 6. Conversely, pressing the second section 17 down relative to the first section 15 causes the first engaging tooth 4 to move downward, forming a meshing engagement structure with the second engaging tooth 13. At this time, the vertical plate 5 restricts the rotation of the lead screw 10, thereby preventing the lead screw 10 from rotating on its own, ensuring the stability of the base 6, and thus ensuring the stability of the support device used in coal mine roadways.

[0035] A receiving groove 14 is provided on the top surface of the first segment 15. The bottom end of the second segment 17 is fitted into the receiving groove 14. A third engaging tooth 16 is provided on the inner wall of the receiving groove 14. At the same time, a fourth engaging tooth 19 is provided on the outer wall of the second segment 17. The fourth engaging tooth 19 is engaged with the third engaging tooth 16. This arrangement realizes the segmented connection of the lead screw 10, allowing the first segment 15 and the second segment 17 to move relative to each other in the vertical direction and engage in the circumferential direction. In addition, a limiting step 20 is provided at the outlet of the receiving groove 14 for cooperating with the radial protrusion 21 on the second segment. During operation, as the second segment 17 is raised, the radial protrusion 21 is raised accordingly. After encountering the limiting step 20, it prevents the second segment 17 from continuing to rise, thereby preventing the second segment 17 from falling off the first segment 15.

[0036] The base 6 is provided with fixing holes 7 for fixing the base 6 to the ground using ground anchors. There are multiple fixing holes 7 on each base 6 to ensure stability.

[0037] In this application, the upright plate 5 is inserted into the top plate 1, allowing for quick alignment and initial fixation, providing a foundation for the subsequent connection of the fixing rod 3. The fixing rod 3 can simultaneously fix the top plate 1, the upright plate 5, and the side support rod 4, effectively reducing the number of fastening points. The lead screw mechanism and the limiting mechanism not only enable the lifting and lowering of the base 6 but also enable position locking, ensuring the stability of the height adjustment of the base 6 and preventing support failure due to external vibration.

[0038] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and / or modifications falling within the scope of the present invention, and all changes and / or modifications made according to the embodiments of the present invention should be covered within the protection scope of the present invention.

Claims

1. A support device for coal mine roadways, characterized in that, include: A top plate, on the bottom end of which a first connector is provided. The top of each of the two vertical plates located at both ends of the top plate is provided with a second connector, which engages with the corresponding first connector. A fixing rod, which passes through the second connector and the first connector to connect with the top plate and the vertical plate. A base is provided at the bottom of each of the upright plates, and a height adjustment component is provided between the base and the upright plate. The height adjustment component is constructed as a lead screw mechanism, which includes a lead screw and a nut pair that matches the lead screw. The lead screw is rotatably connected to the upright plate and extends axially along the vertical direction of the upright plate. The nut pair is fixed to a movable block, and the movable block is fixedly connected to the base.

2. The support device for coal mine roadways according to claim 1, characterized in that, The first connector is a protruding block, the second connector is an inner groove that matches the protruding block, and the fixing rod is a first connecting bolt.

3. The support device for coal mine roadways according to claim 2, characterized in that, Both the protruding block and the inner groove have square cross-sections.

4. The support device for coal mine roadways according to claim 2, characterized in that, A side support is provided between the side of the top plate and the side of the vertical plate, and the side support is connected to the fixing rod.

5. The support device for coal mine roadways according to claim 1, characterized in that, An installation groove is provided on the upright plate, the movable block is inserted into the installation groove in a matching manner, the lead screw extends in the installation groove, and a horizontal plate is provided in the installation groove for the lead screw to pass through.

6. The support device for coal mine roadways according to claim 5, characterized in that, A limit mechanism is provided between the top of the lead screw and the vertical plate.

7. The support device for coal mine roadways according to claim 6, characterized in that, The lead screw is segmented and includes a first segment and a second segment. The first segment and the second segment are axially telescopically connected and circumferentially engaged. The limiting mechanism includes a first engaging tooth disposed on the outer wall of the top end of the lead screw and a second engaging tooth disposed on the vertical plate, wherein the second engaging tooth is engaged with the first engaging tooth.

8. The support device for coal mine roadways according to claim 7, characterized in that, A receiving groove is provided on the top surface of the first segment, and the bottom end of the second segment is fitted into the receiving groove. A third locking tooth is provided on the inner wall of the receiving groove, and a fourth locking tooth is provided on the outer wall of the second segment. The fourth locking tooth is engaged with the third locking tooth.

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