A mine shaft protection structure

Abstract

The utility model relates to the field of mine support, concretely relates to a protection structure of mine well shaft, including the well shaft grating of setting on well shaft crossbeam, well shaft grating has lower crosspiece and upper crosspiece, still include the anti -loose connection subassembly for connecting upper crosspiece with a well shaft crossbeam to the standard hook for connecting lower crosspiece with another well shaft crossbeam, the anti -loose connection subassembly includes: a standard hook, a grating joint piece and an elastic block, the hooking portion of a standard hook passes through the through -hole of grating joint piece, the joint portion of grating joint piece is jointed upper crosspiece, and the elastic block is embedded between the hooking portion of standard hook and the connecting flange of grating joint piece, the hooking portion of another standard hook hooks lower crosspiece, the embodiment of the utility model introduces grating joint piece and elastic block, and combines the existing standard hook to constitute the anti -loose connection subassembly to solve the problem that the traditional hook is easy to loosen, falls off under the vibration environment and connects.

Description

Technical Field

[0001] This utility model relates to the field of mine support, specifically to a protective structure for mine shafts. Background Technology

[0002] To prevent workers from accidentally falling into the well shaft, well shaft grating is usually installed between the well shaft beams (H-beams).

[0003] To facilitate the placement of the shaft grating between two shaft beams, the size of the shaft grating is usually slightly smaller than the spacing between the shaft beams. This results in an installation gap of several millimeters between the shaft grating and the shaft beams after installation. Consequently, under the strong vibrations generated by the operation of equipment such as hoists inside the shaft, the grating shakes violently, which not only causes it to expand and generate noise, but may also cause it to fall and create a safety hazard. Utility Model Content

[0004] The purpose of this utility model is to provide a protective structure for mine shafts, which aims to provide a protective structure that can remain stable in a working environment with strong vibrations.

[0005] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution:

[0006] A protective structure for a mine shaft includes a shaft grid disposed on a shaft crossbeam. The shaft grid has a lower crossbar and an upper crossbar. It also includes an upper connecting assembly for connecting the upper crossbar to one of the shaft crossbeams, and a lower connecting assembly for connecting the lower crossbar to another shaft crossbeam.

[0007] One of the upper connecting component and the lower connecting component is a standard hook and the other is an anti-loosening connecting component, or both the upper connecting component and the lower connecting component are anti-loosening connecting components;

[0008] The anti-loosening connection component includes:

[0009] A standard hook has a mounting part that is fixed to the wellbore beam, and a hook-on part with a C-shaped or U-shaped opening;

[0010] A grid snap-fit ​​component has a snap-fit ​​portion for snapping onto a corresponding crossbar and a connecting flange with a through-hole;

[0011] A flexible block;

[0012] In one working condition, the hooking part of the standard hook passes through the through hole of the grid snap fastener, the snapping part of the grid snap fastener snaps into the corresponding upper crossbar or lower crossbar, and the elastic block is squeezed and embedded between the hooking part of the standard hook and the connecting flange of the grid snap fastener.

[0013] In another operating condition, the hook portion of the standard hook directly hooks onto the corresponding upper or lower crossbar.

[0014] Furthermore, the upper connecting component is the anti-loosening connecting component, and the lower connecting component is the standard hook.

[0015] Furthermore, the elastic block is a highly elastic rubber block or a polyurethane block.

[0016] Furthermore, a sleeve is also installed on the lower crossbar and / or upper crossbar of the well grid, the outer diameter of the sleeve being larger than the opening width of the hook-on portion of the standard hook and the opening width of the snap-on portion of the grid snap-on component.

[0017] Furthermore, the inner diameter of the sleeve is interference-fitted with the outer diameter of the corresponding upper crossbar or lower crossbar.

[0018] Furthermore, the sleeve includes a first half-sleeve body and a second half-sleeve body that cooperate with each other. The first half-sleeve body and the second half-sleeve body are connected to each other by bolts and are clamped to the corresponding lower crossbar or the upper crossbar in an engaging manner.

[0019] Compared with the prior art, this application has the following advantages:

[0020] The embodiments of this utility model introduce a grid snap-fit ​​component and an elastic block, combined with existing standard hooks to form an anti-loosening connection assembly, thereby solving the problem of traditional hook connections being prone to loosening and falling off under vibration environments at a low cost. Attached Figure Description

[0021] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0022] Figure 1 This is a front view of an embodiment of the present utility model;

[0023] Figure 2 for Figure 1 A cross-sectional view along the AA direction;

[0024] Figure 3 for Figure 2 A magnified view of a portion at point C;

[0025] Figure 4 for Figure 2 A magnified view of a portion at point D;

[0026] Figure 5 for Figure 1 A cross-sectional view along the BB direction;

[0027] The labels in the diagram represent the following:

[0028] 1-Well shaft crossbeam;

[0029] 2-Well shaft grid; 21-Lower crossbar; 22-Upper crossbar;

[0030] 3- Anti-loosening connection components;

[0031] 4-Standard hook; 41-Installation part; 42-Hanging part;

[0032] 5-Grid snap-fit ​​fitting; 51-Snap-fit ​​part; 52-Connecting flange; 53-Through-hole;

[0033] 6-Elastic block;

[0034] 7-Sleeve; 71-First half-sleeve body; 72-Second half-sleeve body. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] In the mine environment, due to the continuous vibration generated by the operation of hoists, ventilation and other equipment, the traditional hook connection method has unavoidable installation gaps, which leads to unstable connection between the shaft grid and the shaft beam, posing a safety hazard.

[0037] This embodiment aims to provide a protective structure for mine shafts, and in particular, proposes a connection structure for securely installing shaft grids on shaft crossbeams and effectively preventing the connection from loosening or falling off due to continuous vibration.

[0038] refer to Figure 1 The protective structure disclosed in this application is used to install a shaft grid 2 on a shaft crossbeam 1 of a mine shaft. Typically, one shaft grid 2 spans between two adjacent shaft crossbeams 1. The shaft grid 2 has an upper crossbeam 22 located at its top edge and a lower crossbeam 21 located at its bottom edge.

[0039] The core of this protective structure is: an upper connecting assembly for connecting the upper crossbar 22 to a wellbore beam 1, and a lower connecting assembly for connecting the lower crossbar 21 to another wellbore beam 1.

[0040] The upper and lower connecting components can be configured in the following combinations:

[0041] Combination 1: The upper connecting component is the anti-loosening connecting component 3, and the lower connecting component is the standard hook 4.

[0042] Combination 2: The upper connecting component is a standard hook 4, and the lower connecting component is an anti-loosening connecting component 3.

[0043] Combination 3: Both the upper and lower connecting components are anti-loosening connecting components 3.

[0044] The basic components that make up the above-mentioned connecting assembly will be described first below.

[0045] refer to Figure 2 , Figure 3 and Figure 4 The standard hook 4 is a one-piece metal part, which includes a mounting part 41 and a hanging part 42.

[0046] Mounting section 41 is typically a flat plate structure with at least one mounting through hole for fasteners such as anti-loosening bolts to pass through, thereby fixing the standard hook 4 to the web or flange of the well beam 1.

[0047] The mounting part 42 extends from one end of the mounting part 41 and is bent to form a "C" or "U" shaped structure with an opening.

[0048] The anti-loosening connection assembly 3 is a combination component that includes a standard hook 4, a grid snap-fit ​​connector 5, and an elastic block 6.

[0049] like Figure 4 As shown, the grid snap-fit ​​component 5 includes a snap-fit ​​part 51 for snapping the upper crossbar 22 or the lower crossbar 21 of the well grid 2, which is also a C-shaped or U-shaped opening structure; and a connecting flange 52 integrally connected to the snap-fit ​​part 51, which has a through hole 53.

[0050] The elastic block 6 is a block with good elasticity and compressive strength, preferably a high-elasticity rubber block or a polyurethane block, used to fill gaps, provide preload and absorb vibration.

[0051] Standard hook 4 has two different usage methods:

[0052] In the first working condition, the standard hook 4 is assembled as part of the anti-loosening connection assembly 3. In this state, the standard hook 4 works together with the grid snap fastener 5 and the elastic block 6 to achieve the anti-loosening connection.

[0053] In the second working condition, when the standard hook 4 is used independently, the hooking part 42 of the standard hook 4 directly hooks the crossbar of the well screen 2, playing a basic role in suspension and positioning.

[0054] The accompanying drawings of this embodiment show the "Combination 1" mentioned above, namely, the upper connecting component is the anti-loosening connecting component 3, and the lower connecting component is the standard hook 4.

[0055] like Figure 3 As shown, two standard hooks 4 are fixed to the lower well beam 1 by bolts, and the lower crossbar 21 of the well grid 2 is placed directly in the hook part 42 of the standard hook 4.

[0056] like Figure 4 As shown, two standard hooks 4 are fixed to the upper shaft crossbeam 1 by bolts. The through hole 53 of the grid snap-fit ​​part 5 is fitted onto the outside of the hook 42 of the standard hook 4. At the same time, its snap-fit ​​part 51 snaps onto the upper crossbar 22 of the shaft grid 2 from below. Finally, the elastic block 6 is pressed and inserted into the receiving space formed by the hook 42 of the standard hook 4 and the connecting flange 52 of the grid snap-fit ​​part 5.

[0057] After installation, the compressed elastic block 6 generates a continuous elastic restoring force, which firmly presses the upper crossbar 22 onto the wellbore beam 1 through the grid clip 5 and the standard hook 4, effectively eliminating the installation gap.

[0058] When vibration occurs, the elastic block 6 can also absorb and buffer the vibration energy, thereby preventing the connection from loosening.

[0059] To further prevent the wellbore screen 2 from shifting laterally under strong vibration and to avoid it from coming off the hook opening, this application also provides a further improvement.

[0060] refer to Figure 1 and Figure 5 Sleeves 7 are installed on the lower crossbar 21 and / or upper crossbar 22 of the well grid 2, on both sides or one side of the connection position.

[0061] The outer diameter of the sleeve 7 is designed to be larger than the opening width of the hook 42 of the standard hook 4, and also larger than the opening width of the snap-fit ​​part 51 of the grid snap-fit ​​part 5.

[0062] In this way, the sleeve 7 can act as a physical stop, effectively limiting the lateral movement range of the well screen 2 and preventing it from sliding out of the hook or snap-fit.

[0063] In order to more effectively prevent the lateral movement of the well screen 2, the inner diameter of the sleeve 7 is interference-fitted with the outer diameter of the corresponding upper crossbar 22 or lower crossbar 21, which allows the sleeve 7 to be firmly fitted on the crossbar and prevents itself from sliding.

[0064] To facilitate the installation or maintenance of the already installed well grid, the sleeve 7 can be designed as a detachable split structure.

[0065] like Figure 5 As shown, the sleeve 7 includes a first half-sleeve body 71 and a second half-sleeve body 72 that can be fitted together. The two half-sleeve bodies are connected to each other by bolts.

[0066] Specifically, each half-sleeve body has a radially extending connecting flange at its longitudinal mating edge. The flange has bolt holes. During installation, the first half-sleeve body 71 and the second half-sleeve body 72 are mated from the radial sides of the crossbar so that their inner arc surfaces clamp the crossbar. Then, bolts are passed through the bolt holes on the flange and tightened to securely fix the sleeve 7 in the predetermined position on the crossbar.

[0067] In summary, the protective structure provided in this application effectively solves the problem of easy loosening and falling off in vibration environments by introducing an anti-loosening connection assembly 3 consisting of a standard hook 4, a grid snap-fit ​​component 5, and an elastic block 6, combined with an optional sleeve 7.

[0068] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered as falling within the scope of protection of this utility model.

Claims

1. A protective structure for a mine shaft, characterized in that, The wellbore grid (2) is provided on the wellbore crossbeam (1), the wellbore grid (2) having a lower crossbar (21) and an upper crossbar (22), and also includes an upper connecting assembly for connecting the upper crossbar (22) to one of the wellbore crossbeams (1), and a lower connecting assembly for connecting the lower crossbar (21) to another wellbore crossbeam (1); One of the upper connecting component and the lower connecting component is a standard hook (4) and the other is an anti-loosening connecting component (3), or both the upper connecting component and the lower connecting component are anti-loosening connecting components (3). The anti-loosening connection assembly (3) includes: A standard hook (4) has a mounting part (41) fixed to the wellbore beam (1) and a hook part (42) with a C-shaped or U-shaped opening. A grid snap-fit ​​(5) has a snap-fit ​​part (51) for snapping into a corresponding crossbar and a connecting flange (52) having a through hole (53). A flexible block (6); In one working condition, the hook (42) of the standard hook (4) passes through the through hole (53) of the grid snap-fit ​​part (5), the snap-fit ​​part (51) of the grid snap-fit ​​part (5) snaps into the corresponding upper crossbar (22) or lower crossbar (21), and the elastic block (6) is squeezed and embedded between the hook (42) of the standard hook (4) and the connecting flange (52) of the grid snap-fit ​​part (5); In another working condition, the hook (42) of the standard hook (4) directly hooks the corresponding upper crossbar (22) or lower crossbar (21).

2. The protective structure for mine shafts according to claim 1, characterized in that, The upper connecting component is the anti-loosening connecting component (3), and the lower connecting component is the standard hook (4).

3. The protective structure for mine shafts according to claim 1, characterized in that, The elastic block (6) is a highly elastic rubber block or a polyurethane block.

4. The protective structure for mine shafts according to claim 1, characterized in that, A sleeve (7) is also installed on the lower crossbar (21) and / or upper crossbar (22) of the well shaft grid (2). The outer diameter of the sleeve (7) is larger than the opening width of the hook (42) of the standard hook (4) and the opening width of the snap-fit ​​part (51) of the grid snap-fit ​​part (5).

5. The protective structure for mine shafts according to claim 4, characterized in that, The inner diameter of the sleeve (7) is interference-fitted with the outer diameter of the corresponding upper crossbar (22) or lower crossbar (21).

6. The protective structure for mine shafts according to claim 4, characterized in that, The sleeve (7) includes a first half-sleeve body (71) and a second half-sleeve body (72) that cooperate with each other. The first half-sleeve body (71) and the second half-sleeve body (72) are connected to each other by bolts and are clamped on the corresponding lower crossbar (21) or upper crossbar (22) in an engaging manner.

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