Support unit and support assembly

Abstract

Provided in the present disclosure are a support unit and a support assembly. The support unit comprises: bases, a supporting rod and mounting members; the bases are used for being installed on the ground; the supporting rod comprises connection segments and a supporting segment which are sequentially connected, the connection segments being detachably connected to the bases; the supporting segment bulges in a direction away from the bases so as to be used for being in contact with the roof of a tunnel; the mounting members being connected to the supporting segment and being used for fixing a mesh onto the supporting rod, so as to lay the mesh along the peripheral contour of the supporting rod; multiple mounting members are provided, and the multiple mounting members are arranged at intervals in an extension direction of the supporting segment.

Description

Support unit and support assembly

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202310694759.3 and application date of June 12, 2023, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present disclosure relates to the technical field of coal mine tunnel support, and in particular, to a support unit and a support assembly. Background Art

[0004] Coal tunnel support structures include the roof, which is categorized as a false roof, direct roof, and old roof. Common roof support methods include single-piece support, friction metal support, and hydraulic support. However, in actual construction, risks often arise from unique geological structures, increased and enlarged cracks, roof cracking sounds, roof gangue and slag falling, increased water dripping, and increased gas levels. To address these risks, comprehensive grid-like protection is required for the tunnel interior to enhance safety and protection of the coal mining working face.

[0005] In related technologies, coal mine tunnels are generally covered directly on the surface of the protective components of the steel structure by weaving a grid, but the grid is generally fixed by bundling multiple parts, which requires many installation steps, and the integration of the grid and the support structure is insufficient, which easily leads to blind spots in the grid protection.

[0006] Summary of the Invention

[0007] The present disclosure aims to solve one of the technical problems in the related art at least to a certain extent.

[0008] To this end, an embodiment of the present disclosure proposes a support unit, which has the advantages of fewer grid installation steps, convenient support, and good use effect.

[0009] The embodiment of the present disclosure provides a support assembly, which has the advantages of fewer grid installation steps, convenient support, and good use effect.

[0010] The supporting unit of the embodiment of the present disclosure includes:

[0011] a base, the base being used for being installed on the ground;

[0012] a support rod, the support rod comprising a connecting section and a supporting section connected in sequence, the connecting section being detachably connected to the base, and the supporting section protruding in a direction away from the base for contacting a top wall of the tunnel;

[0013] A mounting member is connected to the support section and is used to fix the grid on the support rod so that the grid is laid along the outer peripheral contour of the support rod. There are multiple mounting members, and the multiple mounting members are arranged at intervals along the extension direction of the support section.

[0014] The support unit of the embodiment of the present disclosure first covers the grid on the support rod, and then connects it to the support rod using the mounting piece. At the same time, the grid can be pressed between the mounting piece and the support rod, thereby reducing the installation steps of the grid and having the advantages of convenient support and good use effect.

[0015] In some embodiments, a fixing portion is provided at the bottom of the base, and the radial dimension of the fixing portion is larger than the radial dimension of the base; a plurality of fixing holes are provided on the fixing portion, and the plurality of fixing holes are arranged on the fixing portion at intervals along the circumference of the base, and the lower end of the fixing member passes through the fixing holes.

[0016] In some embodiments, the radial dimension of the fixing element gradually decreases from top to bottom.

[0017] In some embodiments, the support rod further includes a first reinforcing rib, a first end of the first reinforcing rib is connected to the connecting section, and a second end of the first reinforcing rib is connected to the supporting section.

[0018] In some embodiments, the support segment has a plurality of mounting holes, and the plurality of mounting holes correspond one-to-one to the plurality of mounting members, at least part of the mounting members fit within the mounting holes, and the depth dimension of the mounting holes is less than or equal to half of the radial dimension of the support segment.

[0019] In some embodiments, the support segment further has a plurality of mounting surfaces, the plurality of mounting surfaces corresponding one-to-one to the plurality of mounting holes, and a plane where one of the mounting surfaces is located is orthogonal to the axial direction of the corresponding mounting hole.

[0020] In some embodiments, the connecting section has a first connecting portion, the base has a second connecting portion, one of the first connecting portion and the second connecting portion has a groove, and the other of the first connecting portion and the second connecting portion has a protrusion matching the groove.

[0021] In some embodiments, the supporting unit of the embodiment of the present disclosure further includes a limiting portion, the limiting portion is placed in the groove, the protrusion is fitted in the groove and the protrusion is connected to the limiting portion.

[0022] In some embodiments, the supporting unit of the embodiment of the present disclosure further includes a first connecting member, which is threadedly engaged with at least one of the first connecting portion and the second connecting portion.

[0023] In some embodiments, the supporting unit of the embodiment of the present disclosure further includes a first anchor rod, which is connected to the base and extends in a direction away from the base.

[0024] In some embodiments, the first connecting part is located at the lower end of the connecting section, and the second connecting part is located at the upper end of the base; the first connecting part is provided with a groove, and the second connecting part is provided with a protrusion matching the groove, or the second connecting part is provided with a groove, and the first connecting part is provided with a protrusion matching the groove.

[0025] In some embodiments, the second connecting portion includes a first portion and a second portion spaced apart in the left-right direction, and the groove is formed between the first portion and the second portion.

[0026] The support assembly of the embodiment of the present disclosure includes a support unit according to any one of the above embodiments, and the number of the support units is multiple, and the multiple support units are arranged at intervals along the extension direction of the tunnel.

[0027] In some embodiments, the support assembly of the embodiment of the present disclosure also includes multiple second connecting members, and the multiple second connecting members correspond one-to-one to the multiple support units. Two adjacent second connecting members are detachably connected, and the mounting member includes a first mounting segment and a second mounting segment connected in sequence. The first mounting segment is used to be connected to the support segment, and at least a portion of the second connecting member passes through the second mounting segment.

[0028] In some embodiments, the second mounting section has a through hole extending along the front-to-back direction, and one end of the second connecting member passes through the through hole and is connected to another adjacent second connecting member.

[0029] In some embodiments, the support assembly of the embodiment of the present disclosure further includes a second anchor rod, the second anchor rod is connected to the second connecting member, and the second anchor rod extends in a direction away from the support rod.

[0030] In some embodiments, a second hole is provided on the second connecting member, and one end of the second anchor rod passes through the second hole and is inserted into the top wall of the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG1 is a schematic structural diagram of a support unit according to an embodiment of the present disclosure.

[0032] FIG2 is a schematic structural diagram of a support rod of a support unit according to an embodiment of the present disclosure.

[0033] FIG3 is a schematic structural diagram of a mounting member of a support unit according to an embodiment of the present disclosure.

[0034] FIG4 is a schematic diagram of the installation of the base of the support unit according to the embodiment of the present disclosure.

[0035] FIG5 is a schematic diagram of the installation of the base of the support unit according to the embodiment of the present disclosure.

[0036] FIG6 is a schematic structural diagram of a support assembly according to an embodiment of the present disclosure.

[0037] FIG7 is a schematic structural diagram of a hidden grid of a support assembly according to an embodiment of the present disclosure.

[0038] FIG8 is an enlarged schematic diagram of A shown in FIG7 .

[0039] FIG. 9 is an enlarged schematic diagram of B shown in FIG. 7 .

[0040] FIG10 is a schematic diagram of the installation of the second connecting member of the support assembly according to the embodiment of the present disclosure.

[0041] Figure markings: Grid 100; Base 1; Second connecting portion 11; Groove 111; Limiting portion 112; Fixing portion 12; Fixing member 13; Fixing hole 14; Support rod 2; Connecting section 21; First connecting portion 211; Protrusion 212; Support section 22; Mounting hole 221; Mounting surface 222; First reinforcing rib 23; Limiting hole 24; Mounting member 3; First mounting section 31; Second mounting section 32; Through hole 33; First connecting member 4; First anchor rod 5; Second connecting member 6; T-shaped portion 61; Connecting hole 62; Second anchor rod 7; Second reinforcing rib 8; Reinforcing rib hole 81. DETAILED DESCRIPTION

[0042] The embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

[0043] The supporting unit of the embodiment of the present disclosure is described below with reference to the accompanying drawings.

[0044] As shown in FIG. 1 to FIG. 5 , the supporting unit of the embodiment of the present disclosure includes a base 1 , a support rod 2 and a mounting member 3 .

[0045] Base 1 is mounted on the ground. Support rod 2 comprises a connecting section 21 and a supporting section 22, which are connected in sequence. Connecting section 21 is detachably connected to base 1, and supporting section 22 protrudes away from base 1 to contact the top wall of the tunnel. Mounting members 3 are connected to supporting section 22 and are used to secure grid 100 to support rod 2 so that grid 100 is laid along the outer contour of support rod 2. Multiple mounting members 3 are provided, spaced apart along the extension direction of supporting section 22.

[0046] As shown in Figures 1-5 , the bottom of the base 1 is provided with a fixing portion 12. The radial dimension of the fixing portion 12 is larger than that of the base 1, thereby increasing the contact area with the ground. The fixing portion 12 is provided with a plurality of fixing holes 14, which are arranged at intervals along the circumference of the base 1. The lower end of the fixing member 13 passes through the fixing holes 14, so that the fixing member 13 can be inserted into the ground to achieve the function of fixing the base 1. As shown in Figure 4 , the radial dimension of the fixing member 13 gradually decreases from top to bottom, further facilitating the insertion of the fixing member 13 into the ground.

[0047] It is understood that, as shown in Figures 1 and 2, the support rod 2 is arc-shaped, and the middle portion of the support rod 2 (i.e., the support section 22) is upwardly convex, so that the profile of the support rod 2 is similar to the profile of the inner wall of the tunnel, and is convenient for fitting the inner wall profile of the tunnel. Of course, the support rod 2 can also be square-shaped.

[0048] In some embodiments, there are two bases 1 , which are respectively connected to the two ends of the support rod 2 , thereby avoiding the problem of the base 1 occupying a large area and facilitating disassembly and assembly with the support rod 2 .

[0049] In some embodiments, the support rod 2 further includes a first reinforcing rib 23, a first end of the first reinforcing rib 23 being connected to the connecting section 21, and the other end of the first reinforcing rib 23 being connected to the supporting section 22. In some embodiments, as shown in Figures 1 and 2, there are multiple first reinforcing ribs 23, and the multiple first reinforcing ribs 23 are sequentially spaced along the extension direction of the support rod 2.

[0050] The mounting member 3 and the support section 22 can be connected by screw threads, plug-in connections, or other means to facilitate assembly and disassembly of the mounting member 3. During installation, the grid 100 is first covered on the support rod 2, and the mounting member 3 is installed on the support section 22, so that the grid 100 is placed between the mounting member 3 and the support section 22. The mounting member 3 can then be used to fix the grid 100 on the support rod 2, thereby achieving a fixed grid 100, simple operation, and convenient use.

[0051] That is to say, the support unit of the embodiment of the present disclosure first covers the grid 100 on the support rod 2, and then connects it to the support rod 2 using the mounting member 3. At the same time, the grid 100 can be pressed between the mounting member 3 and the support rod 2, thereby reducing the installation steps of the grid 100, and has the advantages of convenient support and good use effect.

[0052] In some embodiments, the support segment 22 has multiple mounting holes 221, and the multiple mounting holes 221 correspond one-to-one to the multiple mounting members 3. At least part of the mounting members 3 fits in the mounting holes 221, and the depth dimension of the mounting holes 221 is less than or equal to half of the radial dimension of the support segment 22.

[0053] As shown in FIG. 1 , an internal thread may be provided in the mounting hole 221 , and an external thread matching the internal thread may be provided on the mounting member 3 , so that the mounting member 3 and the mounting hole 221 are connected through threads.

[0054] It can be understood that in some embodiments, as shown in Figures 1 and 2, the cross-section of the support rod 2 is circular, and the depth dimension of the mounting hole 221 is less than or equal to half of the radial dimension of the support section 22, thereby avoiding the mounting hole 221 passing through the support rod 2 and ensuring the overall strength of the support rod 2.

[0055] In some embodiments, the support section 22 further has a plurality of mounting surfaces 222 , and the plurality of mounting surfaces 222 correspond one-to-one to the plurality of mounting holes 221 . The plane where one mounting surface 222 is located is orthogonal to the axial direction of its corresponding mounting hole 221 .

[0056] As shown in Figure 1, the mounting surface 222 is located in the plane where the opening of the mounting hole 221 is located. Since the support rod 2 is cylindrical, when the mounting member 3 is connected to the support rod 2, the contact surface has less contact with the outer arc surface of the support rod 2, which is not conducive to fixing the grid 100. Therefore, opening the mounting surface 222 at the opening of the mounting hole 221 can increase the contact area between the mounting member 3 and the support rod 2, thereby facilitating the fixing of the grid 100.

[0057] In some embodiments, the connecting section 21 has a first connecting portion 211 , the base 1 has a second connecting portion 11 , one of the first connecting portion 211 and the second connecting portion 11 has a groove 111 , and the other of the first connecting portion 211 and the second connecting portion 11 has a protrusion 212 matching the groove 111 .

[0058] As shown in Figures 1 and 2, the first connecting portion 211 is located at the lower end of the connecting section 21, and the second connecting portion 11 is located at the upper end of the base 1. The first connecting portion 211 can be provided with a groove 111, and the second connecting portion 11 can be provided with a protrusion 212 that matches the groove 111. Alternatively, the second connecting portion 11 can be provided with a groove 111, and the first connecting portion 211 can be provided with a protrusion 212 that matches the groove 111.

[0059] In some embodiments, as shown in Figure 1, the second connecting part 11 is provided with a groove 111, the first connecting part 211 is provided with a protrusion 212, and the base 1 is connected to the support rod 2 so that the protrusion 212 is inserted into the groove 111 to limit the movement of the support rod 2 in the left and right directions relative to the base 1.

[0060] It can be understood that the second connecting part 11 includes a first part and a second part arranged at intervals along the left-right direction, and a groove 111 is formed between the first part and the second part so that the protrusion 212 can be placed in the groove 111 and prevent the base 1 and the support rod 2 from being relatively fixed in the left-right direction, thereby improving the overall stability of the support unit.

[0061] In some embodiments, the supporting unit of the embodiment of the present disclosure further includes a limiting portion 112 , the limiting portion 112 is placed in the groove 111 , the protrusion 212 fits in the groove 111 and the protrusion 212 is connected to the limiting portion 112 .

[0062] As shown in Figures 1, 2, 4, and 5, the lower end of the limiting portion 112 is connected to the bottom of the groove 111, and the limiting portion 112 extends from bottom to top. The bottom of the protrusion 212 is provided with a limiting groove that matches the limiting portion 112. The protrusion 212 is placed in the groove 111, and the limiting portion 112 can be placed in the limiting groove, thereby further limiting the movement of the support rod 2 relative to the base 1. That is, the limiting portion 112 is placed in the limiting groove, which can prevent the support rod 2 and the base 1 from moving relative to each other in the front-to-back direction.

[0063] In some embodiments, an interference fit is adopted between the limiting portion 112 and the limiting groove.

[0064] In some embodiments, the supporting unit of the embodiment of the present disclosure further includes a first connecting member 4 , which is threadedly engaged with at least one of the first connecting portion 211 and the second connecting portion 11 .

[0065] It can be understood that, as shown in Figure 1, the first connecting member 4 can be a nut, the first connecting member 4 has an internal thread, the first connecting part 211 is provided with a groove 111, and the second connecting part 11 is provided with a protrusion 212, then the outer peripheral surface of the first connecting part 211 is provided with an external thread to facilitate the first connecting member 4 and the first connecting part 211 to be connected by thread; when the second connecting part 11 is provided with a groove 111 and the first connecting part 211 is provided with a protrusion 212, then the outer peripheral surface of the second connecting part 11 is provided with an external thread to facilitate the first connecting member 4 and the first connecting part 211 to be connected by thread.

[0066] In some embodiments, the supporting unit of the embodiment of the present disclosure further includes a first anchor rod 5 , which is connected to the base 1 and extends in a direction away from the base 1 .

[0067] As shown in FIG1 , a first hole for installing a first anchor rod 5 is provided on the base 1 . One end of the first anchor rod 5 can pass through the first hole and be inserted into the side wall of the tunnel to achieve anchoring.

[0068] In some embodiments, there are multiple first holes, which are spaced apart along the height direction of the base 1 (such as the up and down direction in FIG1 ), and there are multiple first anchor rods 5, which correspond one-to-one to the multiple first holes.

[0069] The support assembly of the embodiment of the present disclosure is described below with reference to the accompanying drawings.

[0070] As shown in FIG6-FIG10, the support assembly of the embodiment of the present disclosure includes a support unit according to any one of the above embodiments, and the number of the support units is multiple, and the multiple support units are arranged at intervals along the extension direction of the tunnel.

[0071] It is understood that, as shown in Figures 6-10, multiple support units are sequentially arranged at intervals along the extension direction of the tunnel (e.g., the front-to-back direction in Figure 1). In other words, multiple support units are sequentially arranged, the grid 100 is laid on the multiple support units, and the grid 100 is fixed to the support rods 2 using the mounting members 3, thereby forming an arched safety passage in the extension direction of the tunnel. This passage facilitates the passage of construction workers, is easy to install, and has good performance.

[0072] In some embodiments, the support assembly of the embodiment of the present disclosure also includes multiple second connecting members 6, the multiple second connecting members 6 correspond one-to-one to the multiple support units, and two adjacent second connecting members 6 are detachably connected. The mounting member 3 includes a first mounting segment 31 and a second mounting segment 32 connected in sequence, and the first mounting segment 31 is used to be connected to the support segment 22, and at least part of the second connecting member 6 passes through the second mounting segment 32.

[0073] As shown in Figures 6 to 10, the second mounting section 32 has a through hole 33 extending in the front-to-back direction. One end of the second connecting member 6 can pass through the through hole 33 and connect to another adjacent second connecting member 6, thereby strengthening the connection between the two adjacent support units.

[0074] It can be understood that both the front and rear ends of the second connecting member 6 have a T-shaped portion 61, and the T-shaped portion 61 is provided with a connecting hole 62. Two adjacent second connecting members 6 can be connected through the connecting hole 62 using screws, bolts, etc., so that the two adjacent support units are connected through the second connecting member 6.

[0075] In some embodiments, the base 1 is further provided with a rib hole 81 for mounting a second rib 8. It is understood that, as shown in Figures 6-10, a second rib 8 can extend through multiple rib holes 81 in the front-to-back direction to strengthen the connection between multiple bases. The second rib 8 and the rib hole 81 can be connected by threaded connections or by an interference fit or other similar method.

[0076] In some embodiments, the support assembly of the embodiment of the present disclosure further includes a second anchor rod 7 , which is connected to the second connecting member 6 , and the second anchor rod 7 extends in a direction away from the support rod 2 .

[0077] As shown in Figures 6 to 10, a second hole is also provided on the second connecting member 6. One end of the second anchor rod 7 can pass through the second hole and be inserted into the top wall of the tunnel to achieve anchoring of the support unit and further improve the stability of the support assembly.

[0078] It should be noted that the second anchor rod 7 and the second hole can be connected by thread or by interference fit to ensure the stability between the second anchor rod 7 and the second connecting member 6.

[0079] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present disclosure.

[0080] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0081] In this disclosure, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication between them; direct connections or indirect connections through an intermediate medium; and internal communication between two elements or interaction between two elements, unless otherwise expressly limited. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0082] In the present disclosure, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0083] In the present disclosure, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0084] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present disclosure. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present disclosure.

Claims

1. A support unit, comprising: A base, the base being used for installation on the ground; A support rod, the support rod comprising a connecting section and a supporting section connected in sequence, the connecting section being detachably connected to the base, and the supporting section protruding in a direction away from the base so as to contact the top wall of the laneway; A mounting member connected to the support section and used to fix the grid on the support rod so that the grid is laid along the outer peripheral contour of the support rod. There are multiple mounting members, and the multiple mounting members are arranged at intervals along the extension direction of the support section.

2. The support unit according to claim 1, wherein: A fixing portion is provided at the bottom of the base, and the radial dimension of the fixing portion is larger than the radial dimension of the base; a plurality of fixing holes are opened on the fixing portion, and the plurality of fixing holes are arranged on the fixing portion at intervals along the circumference of the base, and the lower end of the fixing piece passes through the fixing holes.

3. The support unit according to claim 2, wherein: The radial dimension of the fixing member gradually decreases from top to bottom.

4. The support unit according to claim 1, wherein: The support rod further includes a first reinforcing rib, a first end of the first reinforcing rib is connected to the connecting section, and a second end of the first reinforcing rib is connected to the supporting section.

5. The support unit according to claim 1, wherein: The support segment has a plurality of mounting holes, and the plurality of mounting holes correspond one-to-one to the plurality of mounting members. At least a portion of the mounting members fits within the mounting holes, and a depth dimension of the mounting holes is less than or equal to half of a radial dimension of the support segment.

6. The support unit according to claim 5, wherein: The support section also has a plurality of mounting surfaces, and the plurality of mounting surfaces correspond one-to-one to the plurality of mounting holes. The plane where one of the mounting surfaces is located is orthogonal to the axial direction of the corresponding mounting hole.

7. The support unit according to claim 6, wherein: The connecting section has a first connecting portion, the base has a second connecting portion, one of the first connecting portion and the second connecting portion has a groove, and the other of the first connecting portion and the second connecting portion has a protrusion matching the groove.

8. The support unit according to claim 7, wherein: It also includes a limiting portion, which is placed in the groove, the protrusion is fitted in the groove and the protrusion is connected to the limiting portion.

9. The support unit according to claim 8, wherein: Also included is a first connecting member, which is threadably engaged with at least one of the first connecting portion and the second connecting portion.

10. The support unit according to claim 9, wherein: The invention also includes a first anchor rod, wherein the first anchor rod is connected to the base and extends in a direction away from the base.

11. The support unit according to claim 7, wherein: The first connecting part is located at the lower end of the connecting section, and the second connecting part is located at the upper end of the base; the first connecting part is provided with a groove, and the second connecting part is provided with a protrusion matching the groove, or the second connecting part is provided with a groove, and the first connecting part is provided with a protrusion matching the groove.

12. The support unit according to claim 11, wherein: The second connection portion includes a first portion and a second portion that are spaced apart in the left-right direction, and the groove is formed between the first portion and the second portion.

13. A support assembly, wherein: The support assembly comprises a support unit according to any one of claims 1 to 12, wherein there are a plurality of support units, and the plurality of support units are arranged at intervals along the extension direction of the tunnel.

14. The support assembly according to claim 13, wherein: It also includes a plurality of second connecting members, wherein the plurality of second connecting members correspond to the plurality of supporting units one by one, and two adjacent second connecting members are detachably connected; The mounting member includes a first mounting section and a second mounting section connected in sequence, the first mounting section is used to be connected to the supporting section, and at least a portion of the second connecting member passes through the second mounting section.

15. The support assembly according to claim 14, wherein: The second mounting section has a through hole extending along the front-to-back direction, and one end of the second connecting member passes through the through hole and is connected to another second connecting member adjacent to the second connecting member.

16. The support assembly according to claim 14 or 15, further comprising: A second anchor rod, wherein the second anchor rod is connected to the second connecting member, and the second anchor rod extends in a direction away from the supporting rod.

17. The support assembly according to claim 16, wherein: The second connecting member is provided with a second hole, and one end of the second anchor rod passes through the second hole and is inserted into the top wall of the tunnel.

Images