Combined protective net device for broken surrounding rock top plate

Abstract

The utility model discloses a broken surrounding rock top plate combined type protective net device which comprises a main protective net with rhombic meshes and an auxiliary protective net with small-hole meshes, a net frame assembly is connected to the outer side of the main protective net, an auxiliary net frame is connected to the outer side of the auxiliary protective net, and a plurality of sets of evenly-distributed connecting rings are connected to the edge of the main protective net. A plurality of sets of connecting holes are formed in the edge of the auxiliary protective net, the connecting rings are connected with the corresponding connecting holes through telescopic connecting assemblies, and the net frame assemblies are connected with the positioning points through anchoring assemblies. The method has the beneficial effects that the good fitting property is achieved; the high-strength bearing capacity is achieved; small rocks are effectively protected; and installation and maintenance are easy.

Description

Technical Field

[0001] The utility model relates to the technical field of mine or underground engineering support equipment, in particular to a combined protective net device for a broken surrounding rock roof. Background Art

[0002] In many underground engineering environments, such as mining and tunnel construction, the problem of broken surrounding rock roofs has always been a major challenge to construction safety. As underground projects continue to expand in scale and mining depths increase, the frequency of broken surrounding rock roofs is also increasing.

[0003] Traditional protective nets have numerous shortcomings when dealing with fractured surrounding rock roofs. For one thing, some protective nets have simple structural designs, consisting of a single woven steel wire or simple mesh. These single-structured nets cannot fully cover and effectively protect complex and fractured surrounding rock roofs. For example, when the roof contains large cracks or severely fractured areas, a single mesh may not conform to the roof contours, resulting in protection gaps.

[0004] On the other hand, the connection between some protective nets and the roof is not stable enough. Under the influence of factors such as long-term roof pressure, rock falling impact, and vibration during construction, they are prone to loosening or even falling off. Moreover, traditional protective nets are limited in their ability to withstand roof pressure and cannot effectively disperse and transmit pressure, and are prone to damage in areas where local pressure is concentrated. In addition, the ability to prevent small pieces of rock from falling is insufficient, especially when the roof is highly broken and there are many small pieces of loose rock. The safety of the construction area cannot be guaranteed, posing a serious threat to the safety of construction personnel and equipment. A new type of protective net device is urgently needed to solve these problems. Summary of the Invention

[0005] In order to solve the above problems, especially to address the deficiencies in the prior art, the utility model provides a combined protective net device for a broken surrounding rock roof.

[0006] In order to achieve the above purpose, the utility model adopts the following technical means:

[0007] A combined protective net device for a broken surrounding rock roof comprises a main protective net with diamond-shaped meshes distributed above and below, and a secondary protective net with small meshes. A net frame assembly is connected to the outside of the main protective net, and a secondary grid is connected to the outside of the secondary protective net. The edge of the main protective net is connected to multiple groups of evenly distributed connecting rings, and the edge of the secondary protective net is provided with multiple groups of connecting holes corresponding to the multiple groups of connecting rings. The connecting rings are connected to the corresponding connecting holes via a telescopic connecting assembly, and the net frame assembly is connected to a positioning point via an anchoring assembly.

[0008] The anchor assembly includes a fixing rod that passes through the screen frame assembly, the top of the fixing rod is connected to a plug connector, the bottom of the fixing rod is provided with a lower thread, the bottom of the fixing rod is sleeved with a tray ring arranged at the bottom of the screen frame assembly, and the bottom of the tray ring is provided with a nut threadedly connected to the lower thread;

[0009] The telescopic connection assembly includes a positioning rod, the positioning rod is threadedly inserted with the telescopic rod, the end of the positioning rod away from the telescopic rod is connected to a hook buckled with a connecting ring, the end of the telescopic rod away from the positioning rod is rotatably connected to a rotating shaft rod, and the end of the rotating shaft rod away from the telescopic rod is connected to a buckle buckled with a connecting hole through a locking thread.

[0010] Preferably, the net frame assembly includes an upper net frame and a lower net frame for clamping the main protective net, and the upper net frame is connected to the lower net frame through multiple sets of fixing wires.

[0011] Preferably, the connecting ring and the main protective net are both made of high-strength alloy steel.

[0012] Preferably, the connecting ring is manufactured integrally with the main protective net.

[0013] Preferably, the plug connector and the fixing rod are manufactured integrally.

[0014] Preferably, an outer side of the nut is connected to an outer protrusion.

[0015] Preferably, the hook is a spring-lock hook.

[0016] Preferably, the inner side of the buckle is connected to a plurality of groups of evenly distributed anti-slip teeth.

[0017] Preferably, the secondary grid is welded to the secondary protective net.

[0018] Preferably, the secondary protective net is a flexible steel wire mesh product.

[0019] 1. This utility model offers excellent fit. Through the adjustable design of the telescopic connection assembly, the secondary protective net can fit tightly against the primary protective net and the roof. Regardless of whether the roof surface is flat or has significant undulations or cracks, this ensures that there is no excessive gap between the net and the roof, effectively preventing rocks from falling through the gaps. This fit also allows the net to better withstand pressure from the roof, distributing it evenly across the entire net.

[0020] 2. This utility model boasts a high-strength load-bearing capacity. The main protective net's high-strength alloy steel and rational diamond-shaped mesh structure provide it with excellent load-bearing capacity. Under roof pressure, the main protective net can withstand significant tensile forces without deformation or fracture. Furthermore, anchoring assemblies securely fasten the main protective net to the roof, further enhancing the overall net's resistance to roof pressure. Multiple, evenly distributed anchoring assemblies disperse roof pressure into the surrounding rock, preventing excessive localized pressure from causing net failure.

[0021] 3. This utility model effectively protects against small rocks. The small mesh design of the secondary protective net effectively intercepts small rocks. In a broken rock roof environment, small loose rocks are a common safety hazard. The secondary protective net prevents these small rocks from passing through the primary protective net, ensuring the safety of construction personnel and equipment below. Furthermore, the flexible steel wire material of the secondary protective net can cushion the impact of small rocks to a certain extent, reducing damage to the primary protective net.

[0022] 4. The utility model is easy to install and maintain. The quick-loading and unloading lock and adjustable rod design of the telescopic connection component make the installation and adjustment of the secondary protective net very convenient. During the installation process, the laying and tensioning of the secondary protective net can be completed quickly according to the actual situation on site. During use, if the secondary protective net is found to be damaged or loose in a certain part, it can also be easily replaced or re-fixed through the lock. Although the installation of the anchoring component requires certain drilling and other operations, it can also be completed efficiently with skilled operation. Moreover, in daily maintenance, by checking the tightness of the nut of the anchoring component, the condition of the pallet ring, and the connection of the protective net, problems can be discovered and handled in a timely manner to ensure the normal operation of the protective net device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a structural diagram of the utility model;

[0025] Figure 2 It is a schematic diagram of the structure decomposition of the utility model;

[0026] Figure 3 It is a structural diagram of the screen frame assembly of the utility model;

[0027] Figure 4It is a structural diagram of the anchoring assembly of the utility model;

[0028] Figure 5 It is a schematic diagram of the structural decomposition of the anchoring assembly of the utility model;

[0029] Figure 6 It is a structural diagram of the telescopic connection assembly of the utility model;

[0030] Wherein, the accompanying drawings are marked as follows:

[0031] Net frame assembly 1, connecting ring 2, main protective net 3, anchor assembly 4, telescopic connecting assembly 5, auxiliary net frame 6, connecting hole 7, auxiliary protective net 8, upper net frame 101, fixing wire 102, lower net frame 103, plug connector 401, fixing rod 402, lower thread 403, tray ring 404, nut 405, external protrusion 406, hook 501, positioning rod 502, telescopic rod 503, rotating shaft rod 504, buckle 505, anti-slip teeth 506, locking wire 507. DETAILED DESCRIPTION

[0032] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances. Example 1

[0035] like Figure 1-6 As shown, a combined protective net device for a broken surrounding rock roof comprises a main protective net 3 with diamond-shaped meshes distributed above and below, and a secondary protective net 8 with small meshes. A net frame assembly 1 is connected to the outside of the main protective net 3, and a secondary grid 6 is connected to the outside of the secondary protective net 8. The edge of the main protective net 3 is connected to multiple groups of evenly distributed connecting rings 2, and the edge of the secondary protective net 8 is provided with multiple groups of connecting holes 7 corresponding one-to-one with the multiple groups of connecting rings 2. The connecting rings 2 are connected to the corresponding connecting holes 7 via telescopic connecting assemblies 5, and the net frame assembly 1 is connected to the positioning point via an anchoring assembly 4.

[0036] The anchor assembly 4 includes a fixing rod 402 that passes through the screen frame assembly 1. The top of the fixing rod 402 is connected to a plug connector 401. The bottom of the fixing rod 402 is provided with a lower thread 403. The bottom of the fixing rod 402 is sleeved with a tray ring 404 provided at the bottom of the screen frame assembly 1. The bottom of the tray ring 404 is provided with a nut 405 that is threadedly connected to the lower thread 403.

[0037] The telescopic connection assembly 5 includes a positioning rod 502, which is threadedly connected to the telescopic rod 503. The end of the positioning rod 502 away from the telescopic rod 503 is connected to a hook 501 that is buckled with the connecting ring 2. The end of the telescopic rod 503 away from the positioning rod 502 is rotatably connected to a rotating shaft rod 504. The end of the rotating shaft rod 504 away from the telescopic rod 503 is connected to a buckle 505 that is buckled with the connecting hole 7 through a locking thread 507.

[0038] How it works

[0039] When rocks in the broken surrounding rock roof become loose or fall, large pieces of rock will first impact the primary protective net 3. Made of high-strength alloy steel and featuring a diamond-shaped mesh structure, the primary protective net 3 converts the rock's impact force into tensile force within the mesh wires, transmitting this force to the surrounding rock through the connecting rings 2 and anchoring assemblies 4. If smaller pieces of rock are present, they are intercepted by the secondary protective net 8. The flexible steel wires of the secondary protective net 8 deform slightly when subjected to the impact of small rocks, thereby buffering the impact force while simultaneously transmitting the force to the primary protective net 3 through the telescopic connecting assembly 5. During long-term use, the roof continuously exerts pressure on the protective net, which, through the anchoring assemblies 4, evenly distributes this pressure across the roof rock, maintaining a stable protective state. The telescopic connecting assembly 5 adjusts the position and tension of the secondary protective net 8 based on roof deformation and pressure changes, ensuring a secure fit between the protective net and the roof, preventing any protection loopholes caused by roof deformation. The entire protective net assembly forms an integrated whole, working in tandem to effectively protect the underground construction area. Example 2

[0040] like Figure 1-6As shown, a combined protective net device for a broken surrounding rock roof comprises a main protective net 3 with diamond-shaped meshes distributed above and below, and a secondary protective net 8 with small meshes. A net frame assembly 1 is connected to the outside of the main protective net 3, and a secondary grid 6 is connected to the outside of the secondary protective net 8. The edge of the main protective net 3 is connected to multiple groups of evenly distributed connecting rings 2, and the edge of the secondary protective net 8 is provided with multiple groups of connecting holes 7 corresponding one-to-one with the multiple groups of connecting rings 2. The connecting rings 2 are connected to the corresponding connecting holes 7 via telescopic connecting assemblies 5, and the net frame assembly 1 is connected to the positioning point via an anchoring assembly 4.

[0041] The anchor assembly 4 includes a fixing rod 402 that passes through the screen frame assembly 1. The top of the fixing rod 402 is connected to a plug connector 401. The bottom of the fixing rod 402 is provided with a lower thread 403. The bottom of the fixing rod 402 is sleeved with a tray ring 404 provided at the bottom of the screen frame assembly 1. The bottom of the tray ring 404 is provided with a nut 405 that is threadedly connected to the lower thread 403.

[0042] The telescopic connection assembly 5 includes a positioning rod 502, which is threadedly connected to the telescopic rod 503. The end of the positioning rod 502 away from the telescopic rod 503 is connected to a hook 501 that is buckled with the connecting ring 2. The end of the telescopic rod 503 away from the positioning rod 502 is rotatably connected to a rotating shaft rod 504. The end of the rotating shaft rod 504 away from the telescopic rod 503 is connected to a buckle 505 that is buckled with the connecting hole 7 through a locking thread 507.

[0043] The screen frame assembly 1 includes an upper screen frame 101 and a lower screen frame 103 for clamping the main protective net 3. The upper screen frame 101 is connected to the lower screen frame 103 by multiple sets of fixing wires 102. This arrangement can facilitate the connection between the screen frame assembly 1 and the main protective net 3 and effectively improve the replacement efficiency of the main protective net 3.

[0044] The connecting ring 2 and the main protective net 3 are both made of high-strength alloy steel. These products have high tensile strength, high toughness, and excellent fatigue resistance. They can withstand significant pressure and impact from the roof, effectively improving the effectiveness of the connecting ring 2 and the main protective net 3.

[0045] The connecting ring 2 is made integrally with the main protective net 3. This arrangement can effectively improve the tightness between the connecting ring 2 and the main protective net 3, and can effectively prevent the connecting ring 2 and the main protective net 3 from breaking.

[0046] The plug connector 401 and the fixing rod 402 are manufactured in one piece. This arrangement can effectively improve the tightness between the plug connector 401 and the fixing rod 402, and can effectively prevent the plug connector 401 and the fixing rod 402 from breaking.

[0047] The outer side of the nut 405 is connected with an outer protrusion 406. The outer protrusion 406 can facilitate the user to rotate the nut 405, and can effectively improve the working efficiency and working effect of the nut 405. Example 3

[0048] like Figure 1-6 As shown, a combined protective net device for a broken surrounding rock roof comprises a main protective net 3 with diamond-shaped meshes distributed above and below, and a secondary protective net 8 with small meshes. A net frame assembly 1 is connected to the outside of the main protective net 3, and a secondary grid 6 is connected to the outside of the secondary protective net 8. The edge of the main protective net 3 is connected to multiple groups of evenly distributed connecting rings 2, and the edge of the secondary protective net 8 is provided with multiple groups of connecting holes 7 corresponding to the multiple groups of connecting rings 2. The connecting rings 2 are connected to the corresponding connecting holes 7 through telescopic connecting assemblies 5. The net frame assembly 1 is connected to the positioning point through the anchor assembly 4; the anchor assembly 4 includes a fixing rod 402 that passes through the net frame assembly 1, and the top of the fixing rod 402 is connected to a plug connector 40 1. A lower thread 403 is provided at the bottom of the fixing rod 402, and a tray ring 404 arranged at the bottom of the screen frame assembly 1 is sleeved at the bottom of the fixing rod 402. A nut 405 is provided at the bottom of the tray ring 404, which is threadedly connected to the lower thread 403. The telescopic connection assembly 5 includes a positioning rod 502, and the positioning rod 502 is threadedly inserted with the telescopic rod 503. The end of the positioning rod 502 away from the telescopic rod 503 is connected to a hook 501 buckled with the connecting ring 2. The end of the telescopic rod 503 away from the positioning rod 502 is rotatably connected to a rotating shaft rod 504. The end of the rotating shaft rod 504 away from the telescopic rod 503 is connected to a buckle 505 buckled with the connecting hole 7 through a locking thread 507.

[0049] The hook 501 is a spring-lock hook. The spring-lock hook can facilitate the user to disassemble and assemble the hook 501, and can effectively improve the working efficiency and working effect of the hook 501.

[0050] The inner side of the buckle 505 is connected with multiple groups of evenly distributed anti-skid teeth 506. The anti-skid teeth 506 can firmly bite the auxiliary grid 6, effectively preventing the buckle 505 from loosening during use, and effectively improving the working effect of the buckle 505.

[0051] The auxiliary grid 6 is welded to the auxiliary protection net 8. This arrangement can effectively improve the tightness between the auxiliary grid 6 and the auxiliary protection net 8, and can effectively prevent the auxiliary grid 6 and the auxiliary protection net 8 from breaking.

[0052] The auxiliary protection net 8 is a flexible steel wire mesh product. The flexible steel wire mesh product can adapt to the irregular surface of the top plate and the friction during long-term use, which can effectively improve the service life and use effect of the auxiliary protection net 8.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0054] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A combined protective net device for broken surrounding rock roof, characterized in that: The invention relates to a main protective net (3) with diamond-shaped meshes distributed above and below, and a secondary protective net (8) with small meshes, wherein the outer side of the main protective net (3) is connected to a net frame assembly (1), and the outer side of the secondary protective net (8) is connected to a secondary grid (6), the edge of the main protective net (3) is connected to multiple groups of evenly distributed connecting rings (2), and the edge of the secondary protective net (8) is provided with multiple groups of connecting holes (7) corresponding to the multiple groups of connecting rings (2), the connecting rings (2) are connected to the corresponding connecting holes (7) through a telescopic connecting assembly (5), and the net frame assembly (1) is connected to a positioning point through an anchoring assembly (4); The anchoring assembly (4) comprises a fixing rod (402) penetrating the screen frame assembly (1); the top of the fixing rod (402) is connected to a plug connector (401); the bottom of the fixing rod (402) is provided with a lower thread (403); the bottom of the fixing rod (402) is sleeved with a tray ring (404) arranged at the bottom of the screen frame assembly (1); the bottom of the tray ring (404) is provided with a nut (405) threadedly connected to the lower thread (403); The telescopic connection assembly (5) comprises a positioning rod (502), a telescopic rod (503) being threadedly connected to the positioning rod (502), an end of the positioning rod (502) away from the telescopic rod (503) being connected to a hook (501) buckled with a connecting ring (2), an end of the telescopic rod (503) away from the positioning rod (502) being rotatably connected to a rotating shaft rod (504), and an end of the rotating shaft rod (504) away from the telescopic rod (503) being connected to a buckle ring (505) buckled with a connecting hole (7) via a locking thread (507).

2. The combined protective net device for the broken surrounding rock roof according to claim 1 is characterized in that: The net frame assembly (1) comprises an upper net frame (101) and a lower net frame (103) for clamping the main protective net (3); the upper net frame (101) is connected to the lower net frame (103) via multiple sets of fixing wires (102).

3. The combined protective net device for the broken surrounding rock roof according to claim 1 is characterized in that: The connecting ring (2) and the main protective net (3) are both made of high-strength alloy steel.

4. The combined protective net device for the broken surrounding rock roof according to claim 3 is characterized in that: The connecting ring (2) and the main protective net (3) are manufactured as one piece.

5. The combined protective net device for the broken surrounding rock roof according to claim 1 is characterized in that: The plug connector (401) and the fixing rod (402) are manufactured in one piece.

6. The combined protective net device for the broken surrounding rock roof according to claim 1 is characterized in that: An outer protrusion (406) is connected to the outer side of the nut (405).

7. The combined protective net device for the broken surrounding rock roof according to claim 1 is characterized in that: The hook (501) is a spring-lock hook.

8. The combined protective net device for the broken surrounding rock roof according to claim 1 is characterized in that: The inner side of the buckle (505) is connected to a plurality of groups of evenly distributed anti-slip teeth (506).

9. The combined protective net device for the broken surrounding rock roof according to claim 1 is characterized in that: The auxiliary grid (6) is welded to the auxiliary protective net (8).

10. The combined protective net device for the broken surrounding rock roof according to claim 9 is characterized in that: The secondary protective net (8) is a flexible steel wire mesh product.

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