Outburst prevention support structure for coal roadway excavation

Abstract

The utility model relates to the technical field of coal roadway support structure, and disclose a support structure for preventing outburst for coal roadway driving, include: U -shaped seat, steel arch and fixedly connected in the adjusting cylinder of U -shaped seat inner chamber bottom, steel arch sliding connection is in the top of U -shaped seat, the side wall of steel arch is fixedly connected with the protective net, the inboard wall between steel arch is fixedly connected with the support rod, and the support rod is provided with the protection piece of protection protective net, the top of adjusting cylinder is rotatably connected with the worm wheel, the inner chamber sliding connection of adjusting cylinder has the threaded rod, the inboard wall of threaded rod is screwed in the worm wheel, and the side wall upper end of adjusting cylinder is fixedly connected with the isolation frame, the utility model scheme can reduce the steel arch in the sinking condition that the downward pressure is received, improved the stability of support structure, reduced the heavy object falling, caused the damage condition that the protective net deforms, prolonged the service life of support structure.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal roadway support structure, specifically an anti-outburst support structure used in coal roadway excavation. Background Technology

[0002] A coal roadway is a roadway in which the coal seam accounts for 4 / 5 or more of the roadway excavation section. It is a channel in the coal mine roadway system specifically used for transporting coal, ventilation, drainage, and serving coal mining operations. It occupies an important position in coal mining. Coal roadways are usually located in coal seams. The coal seams themselves have low strength and may have geological structures such as joints and fissures, resulting in poor self-stability of the surrounding rock. Steel arch frames are usually required as support structures.

[0003] Utility model patent application publication number 202323551214.1 discloses a steel arch support structure for underground mine roadways, relating to the field of mining technology. It includes a frame structure, consisting of four symmetrically arranged frames. Each frame contains a support rod, with an arc-shaped plate bolted to the upper end of each support rod. Several protective plates with varying inclination angles are fixed to the sides of the arc-shaped plates. A support plate is fixed to the lower end of the frame structure. A support mechanism is installed between the arc-shaped plates and the protective plates, and an adjustment mechanism is installed between the frame structure and the arc-shaped plates. The support mechanism secures the top of the roadway, reducing the risk of ore falling and facilitating mining operations. The adjustment mechanism allows workers to adjust the height of the frame structure according to the roadway height, minimizing the impact on the support and protection.

[0004] As can be seen from the aforementioned patent, there are anti-outburst support structures for coal roadway excavation. However, these structures still have drawbacks in actual use. The most obvious drawback is that they typically rely on the rotation of a screw to drive an adjusting rod, which in turn drives the steel arch frame to lift and lower. When a heavy object falls into the coal roadway, the screw itself does not have a self-locking function. In this case, the steel arch frame will bear a downward force, causing the screw to rotate in the opposite direction. This causes the steel arch frame to gradually sink, breaking the original support height of the steel arch frame and reducing the stability of the support structure. Therefore, we propose an anti-outburst support structure for coal roadway excavation. Utility Model Content

[0005] The purpose of this invention is to provide an anti-outburst support structure for coal roadway excavation, so as to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] Specifically, this application describes an anti-outburst support structure for coal roadway excavation, comprising: a U-shaped seat, a steel arch frame, and an adjusting cylinder fixedly connected to the bottom of the inner cavity of the U-shaped seat. The steel arch frame is slidably connected to the top of the U-shaped seat, and a protective net is fixedly connected to the side wall of the steel arch frame. A support rod is fixedly connected between the inner side walls of the steel arch frame, and a protective component for the protective net is provided on the support rod.

[0008] A worm gear is rotatably connected to the top of the adjusting cylinder, and a threaded rod is slidably connected to the inner cavity of the adjusting cylinder. The threaded rod is threaded to the inner side wall of the worm gear. An isolation frame is fixedly connected to the upper end of the side wall of the adjusting cylinder. A worm is rotatably connected to the inner cavity of the isolation frame. The worm meshes with the worm gear. A connecting plate is fixedly connected to the top of the threaded rod. The connecting plate is fixedly connected to the inner side wall of the steel arch frame.

[0009] As a preferred technical solution of this application, the protective component includes an arc-shaped baffle, the side wall of the support rod has a through hole, the inner cavity of the through hole is slidably connected to a sliding rod, the arc-shaped baffle is fixedly connected to the end of the sliding rod near the protective net, and the sliding rod is provided with an elastic element to buffer the sliding rod.

[0010] As a preferred technical solution of this application, the elastic element includes a fixing plate, which is fixedly connected to the other end of the slide rod, and a spring is fixedly connected between the fixing plate and the side wall of the support rod.

[0011] As a preferred technical solution of this application, the top of the U-shaped seat is provided with a sliding groove, and the steel arch frame is slidably connected to the inner cavity of the sliding groove.

[0012] As a preferred technical solution of this application, the inner wall of the worm gear is provided with a threaded groove, and the threaded rod is threadedly connected to the inner cavity of the threaded groove.

[0013] As a preferred technical solution of this application, a rotating disk is rotatably connected to the side wall of the isolation frame, and the rotating disk is fixedly connected to the worm gear.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In the scheme of this application:

[0016] 1. By setting an adjusting cylinder to support the threaded rod, and rotating a worm gear on the adjusting cylinder, the worm gear is threadedly connected to the threaded rod. The threaded rod supports the connecting plate and the steel arch frame. By driving the worm gear inside the isolation frame to rotate, the worm gear drives the worm wheel to rotate. Since the threaded rod is fixed to the connecting plate, the worm wheel can drive the threaded rod to move longitudinally when rotating. Through the setting of the worm gear and worm wheel, the worm wheel can achieve self-locking during rotation, thereby reducing the possibility of the steel arch frame sinking under downward pressure and improving the stability of the support structure.

[0017] 2. By setting support rods between the two sets of steel arch frames, the support rods are connected to sliding rods through through holes, and the sliding rods support the arc-shaped baffles. The sliding rods are also cushioned by elastic elements. By placing the arc-shaped baffles below the protective net, the occurrence of damage to the protective net due to deformation when heavy objects fall is reduced, thus extending the service life of the support structure. Attached Figure Description

[0018] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0019] In the attached diagram:

[0020] Figure 1 A perspective view of the anti-outburst support structure for coal roadway excavation provided in this application;

[0021] Figure 2 An internal view of the isolation frame of the anti-outburst support structure for coal roadway excavation provided in this application;

[0022] Figure 3 A split view of the regulating cylinder of the anti-outburst support structure for coal roadway excavation provided in this application;

[0023] Figure 4 A partial structural diagram of the anti-outburst support structure for coal roadway excavation provided in this application.

[0024] In the diagram: 10. U-shaped seat; 11. Steel arch frame; 12. Protective net; 13. Support rod; 14. Through hole; 15. Sliding rod; 16. Fixing plate; 17. Spring; 18. Arc-shaped baffle; 20. Adjusting cylinder; 21. Worm gear; 22. Threaded rod; 23. Isolation frame; 24. Worm; 25. Connecting plate; 26. Rotating disk. Detailed Implementation

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-4 This is an anti-outburst support structure used in coal roadway excavation, comprising: a U-shaped seat 10, a steel arch frame 11, and an adjusting cylinder 20 fixedly connected to the bottom of the inner cavity of the U-shaped seat 10. Support is achieved through the steel arch frame 11. Specifically, the upper end of the steel arch frame 11 is arched, and the lower end is straight, allowing the steel arch frame 11 to slide within a groove (existing technology, not described in detail here). The steel arch frame 11 is slidably connected to the top of the U-shaped seat 10. A protective net 12 is fixedly connected to the side wall of the steel arch frame 11 to block falling coal slag and other impurities. Support rods 13 are fixedly connected between the inner side walls of the steel arch frame 11 to support the protective components. Protective components for the protective net 12 are installed on the support rods 13. The adjusting cylinder 20... The top of the adjusting cylinder 20 is rotatably connected to a worm gear 21, which drives the threaded rod 22 to rise and fall. The inner cavity of the adjusting cylinder 20 is slidably connected to the threaded rod 22, which drives the connecting plate 25 and the steel arch frame 11 to move longitudinally. The threaded rod 22 is threadedly connected to the inner wall of the worm gear 21. The upper end of the side wall of the adjusting cylinder 20 is fixedly connected to an isolation frame 23, which supports the worm 24. The inner cavity of the isolation frame 23 is rotatably connected to the worm 24, which drives the worm gear 21 to rotate. The worm 24 is meshed with the worm gear 21. The top of the threaded rod 22 is fixedly connected to a connecting plate 25, which drives the steel arch frame 11 to rise and fall. The connecting plate 25 is fixedly connected to the inner wall of the steel arch frame 11.

[0028] Please see Figure 1 and Figure 4 The protective component includes an arc-shaped baffle 18, and a through hole 14 is provided on the side wall of the support rod 13. A sliding rod 15 is slidably connected to the inner cavity of the through hole 14. The arc-shaped baffle 18 is fixedly connected to one end of the sliding rod 15 near the protective net 12. An elastic element is provided on the sliding rod 15 to buffer the sliding rod 15. The arc-shaped baffle 18 is supported by the sliding rod 15, and the protective net 12 is supported and protected by the arc-shaped baffle 18.

[0029] Please see Figure 1 and Figure 4 The elastic element includes a fixed plate 16, which is fixedly connected to the other end of the slide rod 15. A spring 17 is fixedly connected between the fixed plate 16 and the side wall of the support rod 13. The spring 17, in conjunction with the fixed plate 16, applies an elastic force to the slide rod 15.

[0030] Please see Figure 1 The top of the U-shaped seat 10 is provided with a sliding groove, and the steel arch frame 11 is slidably connected to the inner cavity of the sliding groove.

[0031] Please see Figure 1-3 The inner wall of the worm gear 21 is provided with a threaded groove, and the threaded rod 22 is threadedly connected to the inner cavity of the threaded groove. The worm gear 21 is threadedly connected to the threaded rod 22 through the threaded groove.

[0032] Please see Figure 1-3 The side wall of the isolation frame 23 is rotatably connected to a rotating disk 26, which is fixedly connected to a worm gear 24. The rotating disk 26 drives the worm gear 24 to rotate. The rotating disk 26 can be replaced with a motor, which drives the worm gear 24 to rotate.

[0033] Specifically, in use, this structure rotates by rotating the rotating disk 26, which drives the worm gear 24 to rotate. The worm gear 24 then drives the worm wheel 21 to rotate. Since the threaded rod 22 is threadedly connected to the worm wheel 21, the worm wheel 21 can drive the threaded rod 22 to move longitudinally when rotating. The threaded rod 22 drives the connecting plate 25 and the steel arch frame 11 to move longitudinally, thereby adjusting the height of the steel arch frame 11. When coal chunks or other impurities fall into the coal roadway, the impurities will first contact the protective net 12. If the impurities exceed the bearing capacity of the protective net 12, they will contact the arc-shaped baffle 18 and push the arc-shaped baffle 18 and the sliding rod 15 to slide within the through hole 14. At this time, the sliding rod 15 drives the spring 17 to deform through the fixing plate 16. The spring 17 buffers the arc-shaped baffle 18, thus completing the use of the structure.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Anomaly prevention support structures used in coal roadway excavation, including: The U-shaped seat (10), the steel arch frame (11), and the adjusting cylinder (20) fixedly connected to the bottom of the inner cavity of the U-shaped seat (10) are characterized in that the steel arch frame (11) is slidably connected to the top of the U-shaped seat (10), the side wall of the steel arch frame (11) is fixedly connected to a protective net (12), the inner side wall of the steel arch frame (11) is fixedly connected to a support rod (13), and the support rod (13) is provided with a protective component for the protective net (12); The top of the adjusting cylinder (20) is rotatably connected to a worm gear (21), and the inner cavity of the adjusting cylinder (20) is slidably connected to a threaded rod (22). The threaded rod (22) is threadedly connected to the inner side wall of the worm gear (21). The upper end of the side wall of the adjusting cylinder (20) is fixedly connected to an isolation frame (23). The inner cavity of the isolation frame (23) is rotatably connected to a worm (24). The worm (24) meshes with the worm gear (21). The top of the threaded rod (22) is fixedly connected to a connecting plate (25). The connecting plate (25) is fixedly connected to the inner side wall of the steel arch frame (11).

2. The anti-outburst support structure for coal roadway excavation according to claim 1, characterized in that: The protective component includes an arc-shaped baffle (18), and the side wall of the support rod (13) is provided with a through hole (14). The inner cavity of the through hole (14) is slidably connected to a slide rod (15). The arc-shaped baffle (18) is fixedly connected to one end of the slide rod (15) near the protective net (12). An elastic element is provided on the slide rod (15) to buffer the slide rod (15).

3. The anti-outburst support structure for coal roadway excavation according to claim 2, characterized in that: The elastic element includes a fixing plate (16), which is fixedly connected to the other end of the slide rod (15), and a spring (17) is fixedly connected between the fixing plate (16) and the side wall of the support rod (13).

4. The anti-outburst support structure for coal roadway excavation according to claim 1, characterized in that: The top of the U-shaped seat (10) is provided with a sliding groove, and the steel arch frame (11) is slidably connected to the inner cavity of the sliding groove.

5. The anti-outburst support structure for coal roadway excavation according to claim 1, characterized in that: The inner wall of the worm gear (21) is provided with a threaded groove, and the threaded rod (22) is threadedly connected to the inner cavity of the threaded groove.

6. The anti-outburst support structure for coal roadway excavation according to claim 1, characterized in that: The side wall of the isolation frame (23) is rotatably connected to a rotating disk (26), and the rotating disk (26) is fixedly connected to the worm gear (24).

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