Underground metal mine mining support device and method

Abstract

The present invention relates to the field of support technology, and in particular to a support device and method for underground metal mining. The support device for underground metal mining includes two brackets, the top and bottom front sides of the two brackets that are close to each other are rotatably connected by a rotating shaft, the bottoms of the two brackets are rotatably connected to support plates, the sides of the two brackets that are away from each other are slidably connected to baffle 1, the tops of the two brackets are inclinedly provided with baffle 2, the upper parts of the two brackets are slidably connected to limit blocks, and baffle 1 and baffle 2 are respectively provided with trigger rod 1 and trigger rod 2. The present invention automatically monitors and warns of potential dangers in mine tunnels by integrating distance sensors and alarm lights. At the same time, trigger rod 1 and trigger rod 2 automatically respond to impacts, triggering the support plates to automatically rotate to form a stable triangular protective space. This process does not require human intervention, provides an effective and timely refuge passage for workers, and significantly improves the safety of metal mine operations.

Description

Technical Field

[0001] The present invention relates to the field of support technology, and in particular to a support device and method for underground metal mine mining. Background Art

[0002] During underground metal mining, due to the complex and changeable geological conditions, mine tunnels often face safety risks such as rock fall and collapse. Especially in deep mining, as the mining depth increases, the rock pressure increases, and the support difficulty and safety risks also increase accordingly. Existing support devices usually adopt static support methods and lack dynamic response and early warning mechanisms. When encountering sudden impacts, they cannot provide effective protection in time and are difficult to meet the needs of the complex and changeable underground mining environment. Summary of the Invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides an underground metal mine mining support device and method.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A support device for underground metal mining, comprising two C-shaped brackets, the open ends of the two C-shaped brackets correspond to each other, and the front sides of the tops and bottoms of the two brackets close to each other are rotatably connected by a rotating shaft, the two brackets can be rotated to unfold or fold around the rotating shaft, the bottoms of the two brackets are rotatably connected to support plates, the sides of the two brackets away from each other are slidably connected to baffle 1, the tops of the two brackets are obliquely provided with baffle 2, the ends of the two baffles 2 away from each other are respectively rotatably connected to the tops of the two brackets, the ends of the two baffles 2 close to each other are respectively movably connected to the tops of the two brackets, and the upper parts of the two brackets are The sliding connection is a limit block, which is used to limit the rotation of the support plate. The baffle plate 1 is provided with a trigger rod 1 for triggering the rotation of the support plate, and the baffle plate 2 is provided with a trigger rod 2 for triggering the rotation of the support plate. The tops of the two brackets are provided with synchronization components for making the two support plates rotate synchronously. The tops of the two brackets are both connected to the winding roller for rotation front and back, and multiple protective belts are wound on the winding roller. An emergency release component is provided on the winding roller. An alarm light and an emergency life-saving kit are provided on one of the support plates, and multiple distance sensors for monitoring the displacement of baffle plate 1 and baffle plate 2 are provided on the two brackets.

[0006] As a preferred solution of the present invention, the synchronization component includes an L-shaped rod 1, an L-shaped rod 2 and a connecting rod, the tops of the two brackets are slidably connected to the L-shaped rod 1, the tops of the two brackets are rotatably connected to the connecting rod, and the tops of the two brackets are provided with an L-shaped rod 2, which is parallel to the L-shaped rod 1 and staggered front and back. The rotation center of the connecting rod is located in the middle, and one end of the connecting rod is connected to the long end of the L-shaped rod 2 on the same bracket, and the other end of the connecting rod is located on the moving track of the L-shaped rod 1 on the other bracket. When the support plate is in a vertical state, the short ends of the L-shaped rod 2 and the L-shaped rod 1 on each bracket are respectively located on the left and right sides of the top of the corresponding support plate. When the L-shaped rod 1 on one bracket moves toward its long end, it will drive the L-shaped rod 2 on the other bracket to move in the opposite direction through the corresponding connecting rod.

[0007] As a preferred solution of the present invention, the emergency release assembly includes a coil spring, a winding wheel, a connecting rope and an N-shaped rod. A coil spring is arranged between one end of the winding roller and the bracket. The top inside the bracket is rotatably connected to the winding wheel, a connecting rope is wound around the winding wheel, and an N-shaped rod is rotatably connected to the winding wheel. One end of the connecting rope is connected to the coil spring, and the other end of the connecting rope is formed with a knot and is engaged with one end of the N-shaped rod. When the support plate rotates, it will contact the other end of the N-shaped rod, so that the other end of the connecting rope is disengaged from the N-shaped rod.

[0008] As a preferred solution of the present invention, the upper parts of the two brackets are rotatably connected to the guide rails, the upper parts of the support plates are rotatably connected to the sliders, one end of the limit block is inserted into the guide rail and slidingly cooperates with the guide rail, and the limit block has a first inclined surface for contacting and cooperating with the slider. When the slider squeezes the first inclined surface of the limit block, the limit block can be driven to disengage from the guide rail.

[0009] As a preferred solution of the present invention, a buffer spring I is connected between the baffle 1 and the bracket, a buffer spring II is connected between the limit block and the bracket, two rotating rods are slidably connected to the rotating shaft at the top of the bracket, a buffer spring III is connected between the rotating rod below and the bracket, and the two baffles 2 are slidably connected to the two rotating rods respectively.

[0010] As a preferred solution of the present invention, one end of the trigger rod 1 is fixed to the baffle 1 on the corresponding side, and the other end of the trigger rod 1 slides through the bracket on the corresponding side; one end of the trigger rod 2 is slidably connected to the baffle 2 on the corresponding side, and the other end of the trigger rod 2 vertically passes through the bracket on the corresponding side and slides in the vertical direction with the bracket on the corresponding side, and the limit block has a second inclined surface for contacting and cooperating with the bottom end of the trigger rod 2 on the corresponding side. When the trigger rod 2 is pressed downward, the bottom end of the trigger rod 2 squeezes the second inclined surface of the limit block to drive the limit block to disengage from the guide rail.

[0011] As a preferred solution of the present invention, a locking assembly for fixing the rotation state or folding state is provided between the two brackets, and the locking assembly includes a card block and an elastic member, wherein the card block is slidably connected to one of the brackets, and an elastic member is connected between the card block and the bracket, and a card slot matching the card block is opened on the other bracket.

[0012] As a preferred solution of the present invention, the underground metal mine mining support device further includes a universal wheel, and the rear sides of the two brackets are connected to the universal wheel.

[0013] A method for supporting underground metal mine mining, which uses the above-mentioned underground metal mine mining support device, comprises the following steps:

[0014] S1: Impact absorption and early warning: When baffle 1 or baffle 2 is impacted and displaced, the corresponding buffer spring I or buffer spring III is compressed and absorbs part of the impact force. At the same time, when the distance sensor detects that the displacement of baffle 1 or baffle 2 exceeds the preset safety threshold, the alarm light comes on and an early warning is issued;

[0015] S2: Support plate rotation: When the impact force exceeds the absorption limit of buffer spring I or buffer spring III, baffle plate 1 or baffle plate 2 will further compress the corresponding buffer spring I or buffer spring III and produce a larger displacement. At this time, trigger lever 1 directly presses the support plate so that the slider on it directly squeezes the first inclined surface of the limit block, or trigger lever 2 directly squeezes the second inclined surface of the limit block, thereby causing the limit block to slide on the bracket and eventually slide off the guide rail, releasing the rotation restriction of the support plate. At this time, the two support plates rotate downward under the action of gravity, forming a triangular space;

[0016] S3: Synchronous movement and deployment of protective belt: When the support plate on any bracket rotates, it will first contact and push the short end of L-shaped rod one on the corresponding side, so that the long end of L-shaped rod one pushes the connecting rod on the other bracket to rotate. The rotating connecting rod will cause the L-shaped rod two connected to it to move in the opposite direction, so that L-shaped rod two drives the support plate on the other bracket to rotate in the opposite direction synchronously. At the same time, the support plate continues to rotate until it contacts the n-shaped rod, and causes the n-shaped rod to rotate on the winding wheel, so that the connecting rope and the n-shaped rod are disengaged and relaxed. At this time, the coil spring will release its elastic potential energy, so that the protective belt will be deployed from the winding roller. The protective belt covers the triangular space formed to form an additional protective layer.

[0017] Compared with the prior art, the present invention has the following technical effects:

[0018] 1. The present invention automatically monitors and warns of potential dangers in mine tunnels by integrating distance sensors and alarm lights. At the same time, trigger rods 1 and 2 automatically respond to impacts, triggering the support plate to automatically rotate to form a stable triangular protective space. This process does not require human intervention, providing workers with an effective and timely refuge channel, significantly improving the safety of mine operations.

[0019] 2. The present invention not only constructs a multi-layer protective space through baffles 1 and 2, brackets and support plates, but also forms an additional protective layer through automatically deployed protective belts, which can effectively block flying ore and other potential dangerous objects, providing more comprehensive protection for workers. At the same time, by being equipped with emergency life-saving kits, necessary material support is provided for rescue work, thereby improving the emergency response capability.

[0020] 3. The present invention realizes folding and unfolding through the rotatable design of the bracket, and is equipped with a snap-fit ​​assembly for stable connection, making the assembly and disassembly of the device easier and faster. At the same time, the device is equipped with universal wheels to improve the mobility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a support device for underground metal mining;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of an underground metal mining support device after folding;

[0023] Figure 3 is a sectional view of the three-dimensional structure of the bracket;

[0024] Figure 4 for Figure 3 A partial structural cross-sectional view;

[0025] Figure 5 It is a cross-sectional view of the installation structure of the limit block, slider and guide rail;

[0026] Figure 6 Schematic diagram of the three-dimensional structure of the limit block and the trigger rod 2;

[0027] Figure 7 is a schematic diagram of the three-dimensional structure of the emergency release assembly;

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure after the support plate is rotated;

[0029] Figure 9 Schematic diagram of the three-dimensional structure of the synchronization component;

[0030] Figure 10 A schematic diagram of the installation structure of the synchronization component.

[0031] In the figure, 1- bracket; 101- slot; 2- support plate; 3- baffle 1; 4- baffle 2; 5- limit block; 501- first inclined plane; 502- second inclined plane; 6- trigger lever 1; 7- trigger lever 2; 801- L-shaped lever 1; 802- L-shaped lever 2; 803- connecting rod; 901- winding roller; 902- protective belt; 903- winding spring; 904- winding wheel; 905- connecting rope; 906- N-shaped rod; 10- alarm light; 11- emergency life kit; 12- distance sensor; 13- guide rail; 14- slider; 15- rotating rod; 16- block; 17- elastic member; 18- universal wheel. DETAILED DESCRIPTION

[0032] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1 to 10 As shown, an underground metal mining support device includes two C-shaped brackets 1. The open ends of the two C-shaped brackets 1 correspond to each other, and the front sides of the tops and bottoms of the two brackets 1 that are close to each other are rotatably connected by a rotating shaft. The two brackets 1 can be rotated around the rotating shaft to unfold or fold. The bottoms of the two brackets 1 are rotatably connected to support plates 2. The bottom of the left support plate 2 is rotatably connected to the bottom of the left bracket 1, and the top of the left support plate 2 extends to the top of the left bracket 1. The bottom of the right support plate 2 is rotatably connected to the bottom of the right bracket 1, and the top of the right support plate 2 extends to the top of the right bracket 1. Figure 1 As shown. Each of the two brackets 1 is slidably connected to a baffle 1 (3) on the side facing away from each other. When subjected to force, baffle 1 (3) slides toward the corresponding bracket 1. A baffle 2 (4) is angled at the top of each bracket 1. The ends of baffle 2 (4) facing away from each other are pivotally connected to the top of each bracket 1, while the ends of baffle 2 (4) facing toward each other are movably connected to the top of each bracket 1. Sliding blocks 5 are attached to the top of each bracket 1 to limit the rotation of the support plate 2. A trigger lever 6 is attached to baffle 1 (3) to trigger the rotation of the support plate 2, while a trigger lever 2 (7) is attached to baffle 2 (4). The two trigger levers 2 (7) and the two limit blocks 5 are symmetrically located when the two brackets 1 are deployed. A synchronization assembly is installed at the top of each bracket 1 to synchronize the rotation of the two support plates 2. A winding roller 901 is rotatably connected to the front and rear ends of the tops of both brackets 1. Multiple protective strips 902 are wound around the winding roller 901, which is equipped with an emergency release assembly. An alarm light 10 and an emergency life-saving kit 11 are provided on one of the support plates 2 , and a plurality of distance sensors 12 for monitoring the displacement of baffle 1 3 and baffle 2 4 are provided on the two brackets 1 .

[0034] The synchronization assembly includes an L-shaped rod 1 801, an L-shaped rod 2 802 and a connecting rod 803. Figure 9 and Figure 10 As shown. The tops of both brackets 1 are slidably connected to an L-shaped rod 1 801. L-shaped rod 1 801 consists of a long end and a short end and is L-shaped. The long end of L-shaped rod 1 801 slides left and right with the top of the corresponding bracket 1, while the short end of L-shaped rod 1 801 points vertically downward. The tops of both brackets 1 are rotatably connected to connecting rods 803. Both connecting rods 803 are located near the connection point of the tops of the two brackets 1. The tops of both brackets 1 are provided with L-shaped rod 2 802. L-shaped rod 2 802 consists of a long end and a short end and is L-shaped. L-shaped rod 802 and L-shaped rod 801 are arranged parallel and staggered front to back, with the center of rotation of connecting rod 803 located in the middle. In this embodiment, L-shaped rod 801 on the right bracket 1, L-shaped rod 802 on the left bracket 1, L-shaped rod 802 on the right bracket 1, and L-shaped rod 801 on the left bracket 1 are arranged parallel and staggered front to back from front to back. The center of rotation of front connecting rod 803 is located midway between the long ends of front L-shaped rod 1 801 and front L-shaped rod 2 802, while the center of rotation of rear connecting rod 803 is located midway between the long ends of rear L-shaped rod 1 801 and rear L-shaped rod 2 802. One end of connecting rod 803 is movably connected to the long end of L-shaped rod 2 802 on the same bracket 1, and the other end of connecting rod 803 is located on the moving path of L-shaped rod 1 801 on the other bracket 1. When the support plate 2 is in a vertical state, the short ends of the L-shaped rod 2 802 and the L-shaped rod 1 801 on each bracket 1 are respectively located on the left and right sides of the top of the support plate 2, the short end of the L-shaped rod 2 802 is located on the outer side of the top of the corresponding support plate 2, and the short end of the L-shaped rod 1 801 is located on the inner side of the top of the corresponding support plate 2. When the L-shaped rod 1 801 on one bracket 1 moves toward its long end, it will drive the L-shaped rod 2 802 on the other bracket 1 to move in the opposite direction through the connecting rod 803, thereby driving the support plate 2 on the other bracket 1 to rotate.

[0035] The emergency release assembly includes a coil spring 903, a winding wheel 904, a connecting rope 905 and an N-shaped rod 906. Figure 7 As shown. A coil spring 903 is provided between one end of the winding roller 901 and the bracket 1. In this embodiment, a coil spring 903 is provided between the right end of the left winding roller 901 and the right end of the left bracket 1, and a coil spring 903 is provided between the left end of the right winding roller 901 and the left end of the right bracket 1. A winding wheel 904 is rotatably connected to the top of the bracket 1. A connecting rope 905 is wound around the winding wheel 904. An N-shaped rod 906 is rotatably connected to the winding wheel 904. One end of the connecting rope 905 is connected to the coil spring 903. The other end of the connecting rope 905 is formed into a knot and is engaged with the top of one end of the N-shaped rod 906. When the support plate 2 rotates, it contacts the other end of the N-shaped rod 906 on the corresponding side, thereby driving the N-shaped rod 906 to drive, so that the other end of the connecting rope 905 is released from the engagement state with the N-shaped rod 906.

[0036] The upper parts of the two brackets 1 are rotatably connected to the guide rail 13, and the upper parts of the support plates 2 are rotatably connected to the slider 14. The slider 14 is slidably connected to the guide rail 13. One end of the limit block 5 is inserted into the guide rail 13 and slides with the guide rail 13. Figure 4 and Figure 5 As shown, the stopper 5 has a first inclined surface 501 for contacting and cooperating with the slider 14. The contact surface between the slider 14 and the first inclined surface 501 of the stopper 5 is also an inclined surface. When the trigger lever 16 directly applies pressure to the support plate 2, causing it to rotate, the support plate 2 drives the slider 14 to slide within the guide rail 13. The inclined surface of the slider 14 then applies pressure to the first inclined surface 501 of the stopper 5, causing the stopper 5 to slide on the bracket 1, and ultimately driving the stopper 5 off the guide rail 13. As a result, the stopper 5 no longer hinders the sliding of the slider 14, i.e., it no longer limits the support plate 2.

[0037] A buffer spring I is connected between baffle 1 3 and bracket 1, a buffer spring II is connected between the limit block 5 and bracket 1, two rotating rods 15 are slidably connected to the rotating shaft at the top of bracket 1, a buffer spring III is connected between the lower rotating rod 15 and bracket 1, and two baffles 2 4 are slidably connected to the two rotating rods 15. In this embodiment, the top of the rotating shaft at the top of bracket 1 extends upward, the buffer spring III is sleeved on the rotating shaft, one end of the two rotating rods 15 is sleeved on the rotating shaft and slides in cooperation with the rotating shaft in the vertical direction, the buffer spring III on the rotating shaft is located between the lower rotating rod 15 and bracket 1, one baffle 2 4 is slidably connected to the other end of one rotating rod 15, and the other baffle 2 4 is slidably connected to the other end of the other rotating rod 15, as shown in FIG. Figure 8 When the top of baffle plate 2 4 is impacted, the pressure is transferred to the rotating rod 15, causing it to move downward on the rotating shaft at the top of the bracket 1. The buffer spring III is compressed to absorb part of the impact force, and the end of baffle plate 2 4 away from the bracket 1 slides on the other end of the rotating rod 15 while rotating.

[0038] One end of trigger rod 1 (6) is fixed to baffle 1 (3) on the corresponding side, while the other end slides through bracket 1 on the corresponding side. One end of trigger rod 2 (7) is slidably connected to baffle 2 (4) on the corresponding side, while the other end vertically passes through bracket 1 on the corresponding side and slides vertically with the corresponding bracket 1. The stop block 5 has a second inclined surface 502 for contacting and engaging the bottom end of trigger rod 2 (7) on the corresponding side. When baffle 2 (4) is pressed downward, the upper end of trigger rod 2 (7) slides on baffle 2 (4), while the lower end of trigger rod 2 (7) slides downward simultaneously. The bottom end of trigger rod 2 (7) presses against the second inclined surface 502 of the stop block 5. Due to the pressure from the second inclined surface 502, the stop block 5 slides on bracket 1, thereby disengaging from the guide rail 13.

[0039] The structure of the limit block 5 is as follows Figure 6As shown, the upper portion of the bracket 1 is provided with a slot for a limit block 5 to slide back and forth. The limit block 5 is mounted within the slot and slidably engages the inner wall of the slot. A buffer spring II is provided between the limit block 5 and the bracket 1. One end of the limit block 5 extends into the guide rail 13. A first inclined surface 501 is provided at the inserted end of the limit block 5, and a second inclined surface 502 is provided at the top of the limit block 5. The bottom of the trigger lever 2 7 on the corresponding side aligns with the second inclined surface 502 of the limit block 5. Under the action of buffer spring II, one end of the limit block 5 extends into the guide rail 13. The inserted end of the limit block 5 blocks the slider 14 on the corresponding support plate 2, limiting the rotation of the support plate 2. When the support plate 2 is compressed, the slider 14 presses against the first inclined surface 501 of the limit block 5 on the corresponding side. The limit block 5 slides out of the guide rail 13 under the pressure, compressing the buffer spring II, thereby releasing the limit block 5 from the guide rail 13. When the baffle plate 2 4 is compressed, the trigger rod 2 7 squeezes the second inclined surface 502 of the limit block 5 on the corresponding side. The limit block 5 slides out of the guide rail 13 under pressure, and the buffer spring II is compressed, thereby causing the limit block 5 to separate from the guide rail 13.

[0040] A locking assembly is provided between the two brackets 1 for fixing the expanded state or folded state, and the locking assembly includes a locking block 16 and an elastic member 17, wherein the top, bottom and front side of the left bracket 1 are all slidably connected to the locking block 16, and an elastic member 17 is connected between the locking block 16 and the bracket 1, and a locking slot 101 matching the locking block 16 is opened on the right bracket 1. When the two brackets 1 need to be rotated and folded, the ends of the front sides of the two brackets 1 that are away from each other are brought closer to each other, so that the block 16 on the front side of the left bracket 1 contacts the front side of the right bracket 1, and the block 16 is pressed into the left bracket 1. At the same time, the elastic member 17 connected to the block 16 is compressed. Then, after the two brackets 1 are folded, the block 16 automatically extends out and engages in the slot 101 of the right bracket 1 under the elastic action of the elastic member 17, thereby fixing the folded state of the two brackets 1. Similarly, when the two brackets 1 need to be rotated and unfolded, the blocks 16 on the top and bottom of the left bracket 1 are respectively engaged in the corresponding slots 101 on the right bracket 1, thereby fixing the unfolded state of the two brackets 1.

[0041] In this embodiment, the underground metal mine mining support device also includes a universal wheel 18. The rear sides of the two brackets 1 are connected with a universal wheel 18. The universal wheel 18 can be used to conveniently move the device to the area requiring support for installation and use.

[0042] Working principle: Initially, the two brackets 1 are in the unfolded state, and the two brackets 1 are connected by the locking assembly to form a stable overall structure to provide support for the mine tunnel. The two limit blocks 5 limit the sliders 14 of the corresponding two support plates 2 through their first inclined surfaces 501, so that the support plates 2 remain in a vertical state, providing a wider passage space for the mine tunnel. One end of the connecting rope 905 is in a locked state with the N-shaped rod 906, and the other end of the connecting rope 905 is wound around the winding wheel 904 and connected to the coil spring 903, so that the coil spring 903 remains in a compressed state, thereby maintaining the protective belt 902 wound on the winding roller 901, and the distance sensor 12 continuously monitors the displacement of baffle 1 3 and baffle 2 4.

[0043] Once an impact occurs, such as the falling off or movement of the wall or top rock of the mine tunnel, baffle 1 3 or baffle 2 4 will bear the impact force and compress the buffer spring Ⅰ or buffer spring Ⅲ. The buffer spring Ⅰ or buffer spring Ⅲ can effectively absorb the impact force and reduce its impact on the bracket 1 and the internal structure. If the impact force is small, it can be resolved by relying solely on the buffer spring Ⅰ or buffer spring Ⅲ. When the distance sensor 12 detects that the displacement of baffle 1 3 or baffle 2 4 exceeds the preset safety threshold, the alarm light 10 will immediately light up and send a warning signal to the staff.

[0044] As the impact force increases, the displacement of baffle 1 3 or baffle 2 4 further increases. At this time, the trigger rod 1 6 will directly apply pressure to the support plate 2, so that the slider 14 on the support plate 2 applies pressure to the first inclined surface 501 of the limit block 5, or the trigger rod 2 7 directly applies pressure to the second inclined surface 502 of the limit block 5, so that the limit block 5 slides on the bracket 1 and eventually slides off the guide rail 13, thereby releasing the rotation restriction of the support plate 2. Under the action of gravity, the two support plates 2 will rotate downward to form a stable triangular protective space, providing a temporary refuge passage for the staff. During this process, the slider 14 on the support plate 2 will slide on the guide rail 13, making the rotation of the support plate 2 more stable, and the emergency lifesaving kit 11 can provide the staff with necessary rescue materials and equipment.

[0045] When any support plate 2 rotates, it will first contact and push the L-shaped rod 1 801 on the bracket 1, so that the L-shaped rod 1 801 pushes the connecting rod 803 on the other bracket 1 to rotate. The rotating connecting rod 803 will cause the L-shaped rod 2 802 connected to it to move in the opposite direction, so that the L-shaped rod 2 802 drives the other support plate 2 to rotate in the opposite direction synchronously, thereby ensuring that the two support plates 2 rotate synchronously to form a stable triangular space.

[0046] When the support plate 2 continues to rotate downward until it contacts the N-shaped rod 906, the N-shaped rod 906 will rotate on the winding wheel 904, thereby disengaging the connecting rope 905 from the N-shaped rod 906 and loosening it. At this time, the coil spring 903 will release its elastic potential energy, causing the protective belt 902 to quickly unfold from the winding roller 901. The protective belt 902 covers the formed triangular space, forming an additional protective layer to prevent flying ore or other objects from entering the protective space.

[0047] The present invention also provides an underground metal mine mining support method, which uses the above-mentioned underground metal mine mining support device and includes the following steps:

[0048] S1. Impact absorption and early warning: When baffle 1 3 or baffle 2 4 is displaced by impact, buffer spring I or buffer spring III is compressed and absorbs part of the impact force. At the same time, when the distance sensor 12 detects that the displacement of baffle 1 3 or baffle 2 4 exceeds the preset safety threshold, the alarm light 10 lights up and warns in advance.

[0049] S2. Rotation of the support plate 2: When the impact force exceeds the absorption limit of the buffer spring I or the buffer spring III, the baffle 1 3 or the baffle 2 4 will further compress the buffer spring I or the buffer spring III and produce a larger displacement. At this time, the trigger rod 1 6 directly applies pressure to the support plate 2 so that the slider 14 on it directly squeezes the first inclined surface 501 of the limit block 5, or the trigger rod 2 7 directly squeezes the second inclined surface 502 of the limit block 5, so that the limit block 5 slides on the bracket 1 and eventually slides off the guide rail 13, releasing the rotation restriction of the support plate 2. At this time, the two support plates 2 rotate downward under the action of gravity to form a triangular space.

[0050] S3. Synchronous movement and unfolding of the protective belt 902: When the support plate 2 on any bracket 1 rotates, it will first contact and push the L-shaped rod 1 801, so that the L-shaped rod 1 801 pushes the connecting rod 803 on the other bracket 1 to rotate. The rotating connecting rod 803 will cause the L-shaped rod 2 802 on it to move in the opposite direction, so that the L-shaped rod 2 802 drives the support plate 2 on the other bracket 1 to rotate in the opposite direction synchronously. At the same time, the support plate 2 continues to rotate until it contacts the n-shaped rod 906, and causes the n-shaped rod 906 to rotate on the winding wheel 904, so that the connecting rope 905 and the n-shaped rod 906 are disengaged and loosened. At this time, the coil spring 903 will release its elastic potential energy, so that the protective belt 902 is unfolded from the winding roller 901, and the protective belt 902 covers the formed triangular space to form an additional protective layer.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A support device for underground metal mining, characterized by: The invention comprises two C-shaped brackets (1), the open ends of the two C-shaped brackets (1) correspond to each other, and the front sides of the tops and bottoms of the two brackets (1) close to each other are rotatably connected by a rotating shaft, the two brackets (1) can be rotated to unfold or fold around the rotating shaft, the bottoms of the two brackets (1) are rotatably connected to the support plate (2), the sides of the two brackets (1) away from each other are slidably connected to the baffle plate 1 (3), the tops of the two brackets (1) are inclinedly provided with a baffle plate 2 (4), the ends of the two baffle plates 2 (4) away from each other are respectively rotatably connected to the tops of the two brackets (1), the ends of the two baffle plates 2 (4) close to each other are respectively movably connected to the tops of the two brackets (1), and the upper parts of the two brackets (1) are slidably connected to the limit blocks (5), and the limit blocks (5) are used to limit The support plate (2) rotates, a trigger rod (6) for triggering the rotation of the support plate (2) is provided on the baffle plate (3), a trigger rod (7) for triggering the rotation of the support plate (2) is provided on the baffle plate (4), a synchronization component for causing the two support plates (2) to rotate synchronously is provided on the top of the two brackets (1), a winding roller (901) is connected to the top of the two brackets (1) in a rotating manner, a plurality of protective belts (902) are wound on the winding roller (901), an emergency release component is provided on the winding roller (901), an alarm light (10) and an emergency life-saving kit (11) are provided on one of the support plates (2), and a plurality of distance sensors (12) for monitoring the displacement of the baffle plate (3) and the baffle plate (4) are provided on the two brackets (1); The synchronization assembly includes an L-shaped rod (801), an L-shaped rod (802) and a connecting rod (803). The tops of the two brackets (1) are both slidably connected to the L-shaped rod (801). The tops of the two brackets (1) are both rotatably connected to the connecting rod (803). The tops of the two brackets (1) are both provided with an L-shaped rod (802). The L-shaped rod (802) is parallel to the L-shaped rod (801) and is staggered in front and back. The rotation center of the connecting rod (803) is located in the middle. One end of the connecting rod (803) is connected to the L-shaped rod on the same bracket (1). The long ends of the two rods (802) are connected, and the other end of the connecting rod (803) is located on the moving track of the L-shaped rod (801) on the other bracket (1). When the support plate (2) is in a vertical state, the short ends of the L-shaped rod (802) and the L-shaped rod (801) on each bracket (1) are respectively located on the left and right sides of the top of the corresponding support plate (2). When the L-shaped rod (801) on one bracket (1) moves toward its long end, it will drive the L-shaped rod (802) on the other bracket (1) to move in the opposite direction through the connecting rod (803).

2. The underground metal mine mining support device according to claim 1, characterized in that: The emergency release assembly comprises a coil spring (903), a winding wheel (904), a connecting rope (905) and an N-shaped rod (906); a coil spring (903) is provided between one end of the winding roller (901) and the bracket (1); the top of the bracket (1) is rotatably connected to the winding wheel (904); a connecting rope (905) is wound around the winding wheel (904); the winding wheel (904) is rotatably connected to the N-shaped rod (906); one end of the connecting rope (905) is connected to the coil spring (903); the other end of the connecting rope (905) is formed with a knot and is engaged with one end of the N-shaped rod (906); when the support plate (2) rotates, it contacts the other end of the N-shaped rod (906), so that the other end of the connecting rope (905) is disengaged from the engagement with the N-shaped rod (906).

3. The underground metal mining support device according to claim 2, characterized in that: The upper parts of the two brackets (1) are rotatably connected to the guide rail (13), the upper parts of the support plates (2) are rotatably connected to the sliders (14), the sliders (14) are slidably connected to the guide rail (13), one end of the limit block (5) is inserted into the guide rail (13) and slidably cooperates with the guide rail (13), the limit block (5) has a first inclined surface (501) for contacting and cooperating with the slider (14), and when the slider (14) squeezes the first inclined surface (501) of the limit block (5), the limit block (5) can be driven to separate from the guide rail (13).

4. The underground metal mine mining support device according to claim 3, characterized in that: A buffer spring I is connected between the baffle 1 (3) and the bracket (1), a buffer spring II is connected between the limit block (5) and the bracket (1), two rotating rods (15) are slidably connected to the rotating shaft at the top of the bracket (1), a buffer spring III is connected between the lower rotating rod (15) and the bracket (1), and the two baffles 2 (4) are slidably connected to the two rotating rods (15) respectively.

5. The underground metal mining support device according to claim 4, characterized in that: One end of the trigger rod (6) is fixed to the baffle (3) on the corresponding side, and the other end of the trigger rod (6) slides through the bracket (1) on the corresponding side; one end of the trigger rod (7) is slidably connected to the baffle (4) on the corresponding side, and the other end of the trigger rod (7) vertically passes through the bracket (1) on the corresponding side and slides with the bracket (1) on the corresponding side in the vertical direction. The limit block (5) has a second inclined surface (502) for contacting and cooperating with the bottom end of the trigger rod (7) on the corresponding side. When the trigger rod (7) is pressed and moved downward, the bottom end of the trigger rod (7) squeezes the second inclined surface (502) of the limit block (5) to drive the limit block (5) to separate from the guide rail (13).

6. The underground metal mine mining support device according to claim 5, characterized in that: A snap-fit ​​assembly for fixing the rotational state or folding state is provided between the two brackets (1), the snap-fit ​​assembly comprising a snap block (16) and an elastic member (17), wherein the snap block (16) is slidably connected to one of the brackets (1), and an elastic member (17) is connected between the snap block (16) and the bracket (1), and a snap slot (101) matching the snap block (16) is provided on the other bracket (1).

7. The underground metal mining support device according to claim 6, characterized in that: It also includes a universal wheel (18), and the rear sides of the two brackets (1) are both connected with the universal wheel (18).

8. A method for supporting underground metal mining, characterized in that: The method adopts the underground metal mine mining support device according to claim 6 or 7, and the method comprises the following steps: S1: Impact absorption and early warning: When baffle 1 (3) or baffle 2 (4) is impacted and displaced, the corresponding buffer spring I or buffer spring III is compressed and absorbs part of the impact force. At the same time, when the distance sensor (12) detects that the displacement of baffle 1 (3) or baffle 2 (4) exceeds the preset safety threshold, the alarm light (10) lights up and gives an early alarm; S2: Support plate (2) rotates: When the impact force exceeds the absorption limit of buffer spring I or buffer spring III, baffle plate 1 (3) or baffle plate 2 (4) will further compress the corresponding buffer spring I or buffer spring III and produce a larger displacement. At this time, trigger rod 1 (6) directly presses the support plate (2) so that the slider (14) on it directly squeezes the first inclined surface (501) of the limit block (5), or trigger rod 2 (7) directly squeezes the second inclined surface (502) of the limit block (5), so that the limit block (5) slides on the bracket (1), and the limit block (5) finally slides off the guide rail (13), releasing the rotation restriction of the support plate (2). At this time, the two support plates (2) rotate downward under the action of gravity to form a triangular space; S3: Synchronous movement and deployment of the protective belt (902): When the support plate (2) on any bracket (1) rotates, it will first contact and push the short end of the L-shaped rod (801) on the corresponding side, so that the long end of the L-shaped rod (801) pushes the connecting rod (803) on the other bracket (1) to rotate. The rotating connecting rod (803) causes the L-shaped rod (802) connected to it to move in the opposite direction, so that the L-shaped rod (802) drives the support plate on the other bracket (1). (2) synchronously rotate in the opposite direction. At the same time, the support plate (2) continues to rotate until it contacts the n-shaped rod (906), and the n-shaped rod (906) rotates on the winding wheel (904), so that the connecting rope (905) and the n-shaped rod (906) are disengaged and relaxed. At this time, the coil spring (903) releases its elastic potential energy, so that the protective belt (902) is unfolded from the winding roller (901). The protective belt (902) covers the triangular space formed to form an additional protective layer.

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