Underground mine broken roof supporting device

Abstract

The utility model relates to the technical field of foundation pit supporting and discloses an underground mine broken roof supporting device which comprises a bearing plate, a base plate, a threaded sleeve and an adjusting screw rod, the threaded sleeve is fixedly connected with the base plate, the adjusting screw rod is in threaded connection with the threaded sleeve, and the end face of the adjusting screw rod is rotationally connected with the bearing plate. The two same bearing plates are symmetrically arranged on the two side walls of the base plate and connected with the threaded sleeves through the same adjusting screw rods, the dismounting assemblies are arranged on the wall faces of the bearing plates and comprise insertion blocks, embedded holes, pin rods and positioning holes, the insertion blocks are fixedly connected with the bearing plates, the embedded holes are formed in the wall faces of the bearing plates, the insertion blocks are connected with the embedded holes in an inserted mode, and the pin rods are connected with the pin rods. Positioning holes are formed in the wall faces of the inserting blocks, and the pin rods are slidably connected with the bearing plate. The mine broken roof supporting device not only solves the problem that mine broken roof supporting is not stable, but also has the advantages of being efficient, safe, high in adaptability and the like, and is a supporting device with high application value.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit support technology, and in particular to a support device for the broken roof of an underground mine. Background Technology

[0002] The mining of scheelite typically involves underground operations, facing severe challenges in roof support and pit stability. In mines, especially in sections with fractured roofs, collapse is common during mining, seriously impacting mine safety. Currently, traditional support structures are primarily used to prevent pit sidewall collapse. However, when the mine roof is fractured, existing support devices cannot effectively support the mine roof, and the support structures are mostly independent, failing to provide effective coordinated support for the roof and sidewalls, resulting in insufficient stability of the roof and sidewalls. During underground mining, the complex geotechnical conditions require support devices with greater adaptability to cope with fractured roofs and irregularly shaped pit walls.

[0003] For example, existing technologies such as patent CN202220799245.5 propose a support structure for preventing collapse of foundation pits in geotechnical engineering. Although it can provide support and protection for the side walls, it fails to effectively support mining areas with broken roofs. The support structures for the roof and side walls are independent, making it difficult to guarantee the integrity and stability of the support, and thus has certain technical defects.

[0004] Therefore, in order to solve the problem of supporting the broken roof during the mining of scheelite in underground mines, a new support device is needed that can support both the roof and sidewalls of the mine at the same time, avoid the safety hazards caused by roof collapse, and provide convenient operation and higher stability.

[0005] Therefore, we propose a support device for fractured roof in underground mines. Utility Model Content

[0006] The present invention aims to solve the technical problems existing in the prior art and provide a support device for the broken roof of an underground mine.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a support device for a broken roof in an underground mine, comprising a load-bearing plate, a base plate, a threaded sleeve, and an adjusting screw. The threaded sleeve is fixedly connected to the base plate, and the adjusting screw is threadedly connected to the threaded sleeve. The end face of the adjusting screw is rotatably connected to the load-bearing plate. Two identical load-bearing plates are symmetrically arranged on the two side walls of the base plate. The two load-bearing plates are connected to the threaded sleeve via the same adjusting screw. A disassembly assembly is provided on the wall surface of the load-bearing plate. The disassembly assembly includes an insert block, an embedded hole, a pin, and a positioning hole. The insert block is fixedly connected to the load-bearing plate. An embedded hole is provided on the wall surface of the load-bearing plate, and the insert block is inserted into the embedded hole. A positioning hole is provided on the wall surface of the insert block. The pin is slidably connected to the load-bearing plate, and the pin can slide into the positioning hole to limit the position of the insert block.

[0008] As a further limitation of the above solution, the insert is fixedly connected to the top surface of the load-bearing plate, the embedded hole is opened on the side wall of the load-bearing plate, the embedded hole is a rectangular groove and the embedded hole is adapted to the insert, the insert is a rectangular block and the width of the insert is greater than the thickness of the load-bearing plate.

[0009] As a further limitation of the above solution, the positioning hole is opened on the side wall of the insert block, the pin is a rectangular plate and the pin is adapted to the positioning hole, and the positioning hole is close to the top surface of the insert block.

[0010] As a further limitation of the above solution, the disassembly assembly also includes a collar and a guide groove. The guide groove is provided on the side wall of the pin. The collar is fixedly connected to the load-bearing plate, and the pin is slidably connected to the load-bearing plate through the collar.

[0011] As a further limitation of the above scheme, the collar is a U-shaped frame, the pin is slidably connected to the inner wall of the collar, the wall of the pin is provided with a square protrusion, and the side wall of the pin is formed into an inclined surface towards the load-bearing plate through a guide groove.

[0012] As a further limitation of the above scheme, the insert, the recessed hole and the pin are all located on the same axis. When the two load-bearing plates are inserted, the insert of one load-bearing plate is inserted into the recessed hole of the other load-bearing plate, and the positioning hole on the wall of the insert inserted into the recessed hole is located outside the recessed hole.

[0013] This utility model provides a support device for the fractured roof of an underground mine. It has the following beneficial effects:

[0014] 1. Multi-purpose support structure: This device can effectively support both the broken roof and sidewalls simultaneously. By using vertical and horizontal insertion of load-bearing plates, the support structures of the roof and sidewalls are organically combined, improving the stability and adaptability of the support system and ensuring reliable support even in complex mining environments.

[0015] 2. Efficient Installation and Disassembly: The design of the disassembly components simplifies the installation process. The fit between the insert and the recessed hole, and the locking mechanism between the pin and the positioning hole, ensure a stable connection of the load-bearing plate, reducing installation time and operational difficulty, and improving work efficiency.

[0016] 3. Linked Support Between Roof and Sidewalls: During the support of a broken roof, the device forms a linked support through the cooperation of vertical and horizontal load-bearing plates. The interlocking design of the load-bearing plates allows the horizontal and vertical load-bearing plates to pull against each other during installation, forming a stable support force. This makes the support effect more stable and avoids the risk of collapse caused by roof breakage.

[0017] 4. Adaptable to complex mining environments: This device is particularly suitable for underground mines such as scheelite mines, providing strong support when facing fractured roofs and irregular foundation pits. Compared to traditional support structures, this new support device not only improves the stability of the roof but also makes the overall support system more adaptable and safer.

[0018] 5. Self-locking design enhances safety: Through the self-locking design of the pin and collar, the load-bearing plate can automatically lock during installation, preventing the support device from loosening due to external forces, thus improving the safety of the system. Especially in emergency situations, it can effectively protect the safety of mine workers. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present utility model;

[0020] Figure 2 For utility model Figure 1 Enlarged view of A in the middle;

[0021] Figure 3 This is a schematic diagram of the insertion connection of the load-bearing plate of the utility model.

[0022] Legend:

[0023] 10. Load-bearing plate; 11. Base plate; 12. Threaded sleeve; 13. Adjusting screw; 20. Insert block; 21. Embedded hole; 22. Collar; 23. Pin; 24. Positioning hole; 25. Guide groove. Detailed Implementation

[0024] 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.

[0025] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "inner," "outer," and "side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0029] A type of underground mine fractured roof support device, such as Figures 1-3As shown, the system includes a load-bearing plate 10, a base plate 11, a threaded sleeve 12, and an adjusting screw 13. The threaded sleeve 12 is fixedly connected to the base plate 11, and the adjusting screw 13 is threadedly connected to the threaded sleeve 12. The end face of the adjusting screw 13 is rotatably connected to the load-bearing plate 10. Two identical load-bearing plates 10 are symmetrically arranged on the two side walls of the base plate 11. The two load-bearing plates 10 are connected to the threaded sleeve 12 via the same adjusting screw 13. A disassembly assembly is provided on the wall surface of the load-bearing plate 10. The disassembly assembly includes an insert 20, an embedded hole 21, a pin 23, and a positioning hole 24. Block 20 is fixedly connected to the load-bearing plate 10. An embedded hole 21 is formed in the wall of the load-bearing plate 10. Block 20 is inserted into the embedded hole 21. A positioning hole 24 is formed in the wall of block 20. A pin 23 is slidably connected to the load-bearing plate 10. Pin 23 can slide into the positioning hole 24 to limit the position of block 20. Block 20 is fixedly connected to the top surface of the load-bearing plate 10. The embedded hole 21 is formed in the side wall of the load-bearing plate 10. The embedded hole 21 is a rectangular groove and is adapted to the block 20. Block 20 is a rectangular block, and its width is greater than the thickness of the load-bearing plate 10. The positioning hole 24 is opened on the side wall of the insert block 20. The pin 23 is a rectangular plate and is adapted to the positioning hole 24. The positioning hole 24 is close to the top surface of the insert block 20. When providing protective support for the side wall of the pit, the threaded sleeve 12 is rotated to push the corresponding load-bearing plate 10 away from the base plate 11. The load-bearing plate 10 forms a support with the side wall of the pit. The load-bearing plate 10 on the other side of the base plate 11 supports the side wall of the pit in the opposite position in the same way. When supporting the pit with a top, the load-bearing plate 10 is set vertically and pushed. The insert 20 is inserted into the recessed hole 21, and the push pin 23 is pushed into the positioning hole 24 to lock the insert 20 inserted into the recessed hole 21. This achieves the connection between the horizontally placed load-bearing plate 10 and the vertically placed load-bearing plate 10, so that the load-bearing plate 10 supporting the side wall and the load-bearing plate 10 supporting the top of the foundation pit form a whole. This realizes the multi-purpose function of the load-bearing plate 10 and facilitates the insertion and use of the load-bearing plate 10. When inserted and used, the horizontal and vertical load-bearing plates 10 pull each other to form a mutual restraining force, which makes the support effect on the side wall and top of the foundation pit more stable.

[0030] A type of underground mine fractured roof support device, such as Figure 2As shown, the disassembly assembly also includes a collar 22 and a guide groove 25. The guide groove 25 is formed on the side wall of the pin 23. The collar 22 is fixedly connected to the load-bearing plate 10, and the pin 23 is slidably connected to the load-bearing plate 10 through the collar 22. The collar 22 is a U-shaped frame. The pin 23 is slidably connected to the inner wall surface of the collar 22. The wall surface of the pin 23 is provided with a square protrusion. The side wall of the pin 23 forms an inclined surface towards the load-bearing plate 10 through the guide groove 25. The insert 20, the embedded hole 21, and the pin 23 are all located on the same axis. When the two load-bearing plates 10 are inserted, the insert 20 of one load-bearing plate 10 is inserted into the embedded hole 21 of the other load-bearing plate 10. The positioning hole 24 on the wall of the insert 20 in the 1 is located outside the embedded hole 21. When the insert 20 of the vertical load-bearing plate 10 is pushed into the embedded hole 21 of the horizontal load-bearing plate 10, when the wall of the insert 20 enters the guide groove 25, the vertical component of the horizontal force generated by the insert 20 on the pin 23 pushes the pin 23 to slide upward in the collar 22. When the positioning hole 24 of the insert 20 that has entered the embedded hole 21 moves to directly below the pin 23, the pin 23 falls freely under the action of gravity. The pin 23 slides again in the collar 22 and enters the positioning hole 24, realizing self-locking when the load-bearing plate 10 is inserted, which makes it easier to connect the load-bearing plate 10 and improves the installation efficiency.

[0031] This utility model relates to a support device for crushed roof in underground mines. It combines the linkage support principle of the roof and sidewalls. It mainly uses the cooperation of threaded sleeves and adjusting screws to adjust the position of the load-bearing plate so that it can support both the pit sidewalls and the crushed roof, ensuring the integrity and stability of the support.

[0032] During operation, rotating the threaded sleeve causes the adjusting screw to push the load-bearing plate away from the base plate, placing the load-bearing plate horizontally on the side wall of the pit, thus supporting the side wall. When facing a broken roof slab, the load-bearing plate can be set vertically and fixed in position on the roof slab by the engagement of the insert block and the embedded hole. When the load-bearing plate is placed vertically, the insert block enters the embedded hole, and the pin enters the positioning hole, forming a stable linkage structure. At this time, the horizontal and vertical tensions of the load-bearing plate restrain each other, ensuring a stable connection between the roof slab and the side wall support structure, thus improving the support effect.

[0033] The device's disassembly component design allows the load-bearing plate to be easily disassembled and installed, adapting to the usage requirements of different mining environments. During installation, components such as guide grooves and collars enable the pin to self-lock, ensuring the safety and stability of the system during use.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A support device for a fractured roof in an underground mine, comprising a load-bearing plate, a base plate, a threaded sleeve, and an adjusting screw, wherein the threaded sleeve is fixedly connected to the base plate, the adjusting screw is threadedly connected to the threaded sleeve, the end face of the adjusting screw is rotatably connected to the load-bearing plate, and two identical load-bearing plates are symmetrically arranged on two side walls of the base plate, the two load-bearing plates being connected to the threaded sleeve via identical adjusting screws, characterized in that: The wall surface of the load-bearing plate is provided with a disassembly assembly, which includes a plug, an embedded hole, a pin, and a positioning hole. The plug is fixedly connected to the load-bearing plate. An embedded hole is opened on the wall surface of the load-bearing plate, and the plug is inserted into the embedded hole. A positioning hole is opened on the wall surface of the plug. The pin is slidably connected to the load-bearing plate, and the pin can slide into the positioning hole to limit the position of the plug.

2. The underground mine fractured roof support device according to claim 1, characterized in that: The insert is fixedly connected to the top surface of the load-bearing plate. The embedded hole is opened on the side wall of the load-bearing plate. The embedded hole is a rectangular groove and is adapted to the insert. The insert is a rectangular block and the width of the insert is greater than the thickness of the load-bearing plate.

3. The underground mine fractured roof support device according to claim 2, characterized in that: The positioning hole is opened on the side wall of the insert block, the pin is a rectangular plate and the pin is adapted to the positioning hole, and the positioning hole is close to the top surface of the insert block.

4. The underground mine fractured roof support device according to claim 1, characterized in that: The disassembly assembly also includes a collar and a guide groove. The guide groove is provided on the side wall of the pin. The collar is fixedly connected to the load-bearing plate, and the pin is slidably connected to the load-bearing plate through the collar.

5. A support device for fractured roof in an underground mine according to claim 4, characterized in that: The collar is a U-shaped frame, and the pin is slidably connected to the inner wall of the collar. The pin has a square protrusion on its wall, and the side wall of the pin forms an inclined surface that faces the load-bearing plate through a guide groove.

6. The underground mine fractured roof support device according to claim 5, characterized in that: The insert, the recessed hole, and the pin are all located on the same axis. When the two load-bearing plates are inserted, the insert of one load-bearing plate is inserted into the recessed hole of the other load-bearing plate, and the positioning hole on the wall of the insert inserted into the recessed hole is located outside the recessed hole.

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