Underground metal mine mining supporting device and method

Abstract

The invention relates to the technical field of supporting, in particular to an underground metal mine mining supporting device and method. The underground metal mine mining supporting device comprises two supports, the front sides of the tops and the bottoms, close to each other, of the two supports are rotationally connected through rotating shafts, supporting plates are rotationally connected to the bottoms in the two supports, first baffles are slidably connected to the sides, away from each other, of the two supports, and second baffles are obliquely arranged on the tops of the two supports; limiting blocks are slidably connected to the upper portions of the two supports. A first trigger rod and a second trigger rod are arranged on the first baffle and the second baffle correspondingly. By integrating the distance sensor and the alarm lamp, potential risks in the mine laneway are automatically monitored and early warned, meanwhile, impact is automatically responded through the first trigger rod and the second trigger rod, the supporting plate is triggered to automatically rotate to form a stable triangular protection space, manual intervention is not needed in the process, and the safety is high. An effective and timely refuge channel is provided for workers, and the safety of metal mine operation is remarkably improved.

Description

Technical Field

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

[0002] In the process of underground metal mining, due to the complex and changeable geological conditions, mine tunnels often face safety risks such as rock shedding and collapse. Especially in deep mining, with the increase of mining depth, rock pressure increases, and 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 it is 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 through a rotating shaft, the two brackets can be rotated around the rotating shaft to unfold or fold, 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 plates 1, the tops of the two brackets are obliquely provided with baffle plates 2, the ends of the two baffle plates 2 away from each other are respectively rotatably connected to the tops of the two brackets, the ends of the two baffle plates 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 A sliding connection limit block is provided, and the limit block is used to limit the rotation of the support plate. A trigger rod 1 for triggering the rotation of the support plate is provided on the baffle plate 1, and a trigger rod 2 for triggering the rotation of the support plate is provided on the baffle plate 2. A synchronization component for making the two support plates rotate synchronously is provided on the top of the two brackets. The tops of the two brackets are both rotatably connected with winding rollers, and a plurality of protective belts are wound on the winding rollers. An emergency release component is provided on the winding rollers, and an alarm light and an emergency life-saving kit are provided on one of the support plates. A plurality of distance sensors for monitoring the displacement of the baffle plate 1 and the 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 with the L-shaped rod 1, the tops of the two brackets are rotatably connected with the connecting rod, the tops of the two brackets are provided with an L-shaped rod 2, the L-shaped rod 2 is parallel to the L-shaped rod 1 and is staggered front and back, the rotation center of the connecting rod is located in the middle, 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 the winding wheel is rotatably connected to the n-shaped rod, one end of the connecting rope is connected to the coil spring, the other end of the connecting rope is formed with a knot and is engaged and connected with one end of the n-shaped rod, when the support plate rotates, it will contact and act with 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 guide rails, the upper parts of the support plates are rotatably connected to sliders, one end of the limit block is inserted into the guide rail and slidably cooperates with the guide rail, the limit block has a first inclined surface for contacting and cooperating with the slider, and when the slider squeezes the first inclined surface of the limit block, the limit block can be driven to detach 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 on 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 fixedly connected 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 with the bracket on the corresponding side in the vertical direction; 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 and moved 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 snap-fit ​​assembly for fixing the rotation state or folding state is provided between the two brackets, and the snap-fit ​​assembly includes a clamping block and an elastic member, wherein a clamping block is slidably connected to one of the brackets, and an elastic member is connected between the clamping block and the bracket, and a clamping groove matching the clamping block is opened on the other bracket.

[0012] As a preferred solution of the present invention, the underground metal mine mining support device also 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 mining, the method adopts the above-mentioned underground metal mining support device, and the method 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 alarm is sounded;

[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 rod 1 directly presses the support plate so that the slider on it directly squeezes the first inclined surface of the limit block, or trigger rod 2 directly squeezes the second inclined surface of the limit block, so that the limit block slides on the bracket, and the limit block finally slides 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 to form a triangular space;

[0016] S3: Synchronous movement and unfolding of the protective belt: When the support plate on any bracket rotates, it will first contact and push the short end of the L-shaped rod one on the corresponding side, so that the long end of the L-shaped rod one pushes the connecting rod on the other bracket to rotate, and the rotating connecting rod will cause the L-shaped rod two connected to it to move in the opposite direction, so that the 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 relax. At this time, the coil spring will release its elastic potential energy, so that the protective belt will unfold from the winding roller, and the protective belt will cover the formed triangular space 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 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, provides an effective and timely refuge passage for workers, and significantly improves the safety of mine operations.

[0019] 2. The present invention not only constructs a multi-layer protection space through baffles 1 and 2, brackets and support plates, but also forms an additional protection layer through the automatically deployed protection belt, which can effectively block flying ore and other potential dangerous objects, providing more comprehensive protection for workers. At the same time, by equipping emergency life-saving kits, it provides necessary material support for rescue work and improves 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 quicker. 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 It is a three-dimensional structural schematic diagram of an underground metal mine mining support device;

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

[0023] Figure 3 is a three-dimensional structural cross-sectional view 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, the slider and the guide rail;

[0026] Figure 6 It is a 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] Fig. 9 is a schematic diagram of the three-dimensional structure of the synchronization component;

[0030] Fig.10 The figure is 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 rod 1; 7- trigger rod 2; 801- L-shaped rod 1; 802- L-shaped rod 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-saving 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 is further described in detail below in conjunction with 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 close to each other are rotatably connected by a rotating shaft, and 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, and 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, as shown in FIG. Figure 1 As shown. The two brackets 1 are slidably connected to the side away from each other with a baffle 1 3, and the baffle 1 3 will slide toward the corresponding bracket 1 after being stressed. The tops of the two brackets 1 are obliquely provided with baffles 2 4, and the ends of the two baffles 2 4 away from each other are respectively rotatably connected to the tops of the two brackets 1, and the ends of the two baffles 2 4 close to each other are respectively movably connected to the tops of the two brackets 1. The upper parts of the two brackets 1 are slidably connected to limit blocks 5, and the limit blocks 5 are used to limit the rotation of the support plate 2. The baffle 1 3 is provided with a trigger rod 1 6 for triggering the rotation of the support plate 2, and the baffle 2 4 is provided with a trigger rod 2 7 for triggering the rotation of the support plate 2. The two trigger rods 2 7 and the two limit blocks 5 are centrally symmetrically distributed when the two brackets 1 are unfolded. The tops of the two brackets 1 are provided with a synchronization component for making the two support plates 2 rotate synchronously. The tops of the two brackets 1 are rotatably connected to a winding roller 901 in front and back, and a plurality of protective belts 902 are wound on the winding roller 901, and an emergency release component is provided on the winding roller 901. An alarm light 10 and an emergency life-saving kit 11 are disposed on one of the support plates 2 , and a plurality of distance sensors 12 for monitoring the displacement of the baffle plate 1 3 and the baffle plate 2 4 are disposed 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. Fig. 9 and Fig.10 As shown. The tops of the two brackets 1 are both slidably connected with an L-shaped rod 1 801, which is composed of a long end and a short end and is L-shaped. The long end of the L-shaped rod 1 801 slides with the top of the corresponding bracket 1 in the left-right direction, and the short end of the L-shaped rod 1 801 is vertically downward. The tops of the two brackets 1 are both rotatably connected with a connecting rod 803, and the two connecting rods 803 are close to the connection part of the tops of the two brackets 1. The tops of the two brackets 1 are both provided with an L-shaped rod 2 802, which is composed of a long end and a short end and is L-shaped. 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. In this embodiment, the L-shaped rod 801 on the right bracket 1, the L-shaped rod 802 on the left bracket 1, the L-shaped rod 802 on the right bracket 1 and the L-shaped rod 1 801 on the left bracket 1 are parallel from front to back and staggered in front and back. The rotation center of the front connecting rod 803 is located in the middle position between the long end of the front L-shaped rod 1 801 and the long end of the front L-shaped rod 2 802, and the rotation center of the rear connecting rod 803 is located in the middle position between the long end of the rear L-shaped rod 1 801 and the long end of the rear L-shaped rod 2 802. One end of the connecting rod 803 is movably connected to the long end of the L-shaped rod 2 802 on the same bracket 1, and the other end of the connecting rod 803 is located on the moving track of the 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 arranged between one end of the winding roller 901 and the bracket 1. In this embodiment, a coil spring 903 is arranged between the right end of the winding roller 901 on the left and the right end of the bracket 1 on the left, and a coil spring 903 is arranged between the left end of the winding roller 901 on the right and the left end of the bracket 1 on the right. A winding wheel 904 is rotatably connected to the top of the bracket 1, and 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, and the other end of the connecting rope 905 is formed with a knot and is engaged with the top of one end of the n-shaped rod 906. When the support plate 2 rotates, it will contact 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 engaged 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, which is 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. Figure 4 and Figure 5 As shown, the stop block 5 has a first inclined surface 501 for contacting and cooperating with the slider 14, and the contact surface between the slider 14 and the first inclined surface 501 of the stop block 5 is also an inclined surface. When the trigger rod 16 directly presses the support plate 2 to rotate it, the support plate 2 drives the slider 14 to slide in the guide rail 13, so that the inclined surface of the slider 14 presses the first inclined surface 501 of the stop block 5, so that the stop block 5 slides on the bracket 1, and finally drives the stop block 5 to disengage from the guide rail 13, so that the stop block 5 no longer hinders the sliding of the slider 14, that is, no longer limits the support plate 2.

[0037] A buffer spring I is connected between the baffle plate 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 rotating rod 15 at the bottom and the bracket 1, and two baffle plates 2 4 are slidably connected to the two rotating rods 15 respectively. In this embodiment, the top of the rotating shaft at the top of the bracket 1 extends upward, the buffer spring III is sleeved on the rotating shaft, one end of the two rotating rods 15 are sleeved on the rotating shaft and slide with the rotating shaft in the vertical direction, the buffer spring III on the rotating shaft is located between the rotating rod 15 at the bottom and the bracket 1, one baffle plate 2 4 is slidably connected to the other end of one rotating rod 15, and another baffle plate 2 4 is slidably connected to the other end of another rotating rod 15, such as Figure 8 When the top of the baffle plate 2 4 is impacted, the pressure will be transmitted to the rotating rod 15 to make it move downward on the rotating shaft at the top of the bracket 1, and the buffer spring III will be compressed to absorb part of the impact force, and the end of the baffle plate 2 4 away from the bracket 1 will slide on the other end of the rotating rod 15 and rotate at the same time.

[0038] One end of the trigger rod 1 6 is fixed to the baffle 1 3 on the corresponding side, and the other end of the trigger rod 1 6 slides through the bracket 1 on the corresponding side. One end of the trigger rod 2 7 is slidably connected to the baffle 2 4 on the corresponding side, and the other end of the trigger rod 2 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 2 7 on the corresponding side. When the baffle 2 4 is pressed and rotated downward, the upper end of the trigger rod 2 7 slides on the baffle 2 4, and the lower end of the trigger rod 2 7 slides downward at the same time. The bottom end of the trigger rod 2 7 presses the second inclined surface 502 of the limit block 5. The limit block 5 slides on the bracket 1 due to the pressure on the second inclined surface 502, thereby disengaging from the guide rail 13.

[0039] The structure of the limit block 5 is as follows: Figure 6As shown, the upper part of the bracket 1 is provided with a slide groove for the limit block 5 to slide forward and backward. The limit block 5 is installed in the slide groove of the bracket 1 and slides with the inner wall of the slide groove. 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. The extending end of the limit block 5 is provided with a first inclined surface 501. The top of the limit block 5 is provided with a second inclined surface 502. The bottom of the trigger rod 27 on the corresponding side corresponds to the second inclined surface 502 of the limit block 5. Under the action of the buffer spring II, one end of the limit block 5 extends into the guide rail 13. The insertion end of the limit block 5 blocks the slider 14 on the support plate 2 on the corresponding side. The limit block 5 is used to limit the rotation of the support plate 2. When the support plate 2 is compressed, the slider 14 squeezes the first inclined surface 501 of the limit block 5 on the corresponding side. After the limit block 5 is compressed, it slides out of the guide rail 13, and the buffer spring II is compressed, so that the limit block 5 is separated 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, and the limit block 5 slides out of the guide rail 13 after being compressed, and the buffer spring II is compressed, thereby causing the limit block 5 to separate from the guide rail 13 .

[0040] A snap-fit ​​assembly for fixing the unfolded state or folded state is provided between the two brackets 1, and the snap-fit ​​assembly includes a clamping 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 clamping block 16, and an elastic member 17 is connected between the clamping block 16 and the bracket 1, and a clamping slot 101 matching the clamping 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 is pressed into the left bracket 1 after contacting the front side of the right bracket 1. At the same time, the elastic member 17 connected to the block 16 is compressed. Subsequently, after the two brackets 1 are folded, the block 16 automatically extends out and engages in the slot 101 of the right bracket 1 due to 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 at 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 the universal wheel 18. The universal wheel 18 can be used to conveniently move the device to an 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 locking 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 buffer spring Ⅰ or buffer spring Ⅲ. 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 only by 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 to send a warning signal to the staff.

[0044] As the impact force increases, the displacement of baffle plate 1 3 or baffle plate 2 4 further increases. At this time, trigger rod 1 6 will directly pressurize support plate 2, causing slider 14 on support plate 2 to pressurize first inclined surface 501 of limit block 5, or trigger rod 2 7 will directly pressurize second inclined surface 502 of limit block 5, causing limit block 5 to slide on bracket 1 and finally slide off guide rail 13, thereby releasing the rotation restriction of 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, slider 14 on support plate 2 will slide on guide rail 13, making the rotation of support plate 2 more stable, and emergency life-saving kit 11 can provide necessary rescue materials and equipment for the staff.

[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, and 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, so that the connecting rope 905 and the n-shaped rod 906 will disengage and relax. 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 to form an additional protective layer to prevent flying ore or other objects from entering the protection space.

[0047] The present invention also provides an underground metal mine mining support method, which adopts the above-mentioned underground metal mine mining support device, and the method comprises 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 warning 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 plate 1 3 or the baffle plate 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 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 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 finally slides off the guide rail 13, releasing the rotation restriction on 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, and 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 relaxed. 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 solution of the present invention rather than to limit it. 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 solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An underground metal mining support device, characterized in that: 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 through a rotating shaft, and the two brackets (1) can be rotated around the rotating shaft to be unfolded or folded, the bottoms of the two brackets (1) are rotatably connected to a support plate (2), the sides of the two brackets (1) away from each other are slidably connected to a baffle plate 1 (3), the tops of the two brackets (1) are obliquely 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), and 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 a limiting block (5), and the limiting block (5) is used to limit The support plate (2) rotates, a trigger rod (6) for triggering the support plate (2) to rotate is arranged on the baffle plate (3), a trigger rod (7) for triggering the support plate (2) to rotate is arranged on the baffle plate (4), a synchronization component for causing the two support plates (2) to rotate synchronously is arranged on the top of the two brackets (1), a winding roller (901) is rotatably connected to the top of the two brackets (1), a plurality of protective belts (902) are wound on the winding roller (901), an emergency release component is arranged on the winding roller (901), an alarm light (10) and an emergency life-saving box (11) are arranged 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 arranged on the two brackets (1).

2. The underground metal mine mining support device according to claim 1, characterized in that: The synchronization component comprises an L-shaped rod 1 (801), an L-shaped rod 2 (802) and a connecting rod (803); the tops of the two brackets (1) are slidably connected to the L-shaped rod 1 (801); the tops of the two brackets (1) are rotatably connected to the connecting rod (803); the tops of the two brackets (1) are provided with an L-shaped rod 2 (802); the L-shaped rod 2 (802) is parallel to the L-shaped rod 1 (801) and is staggered 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).

3. The underground metal mine mining support device according to claim 2, 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 arranged between one end of the winding roller (901) and the 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 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).

4. The underground metal mine mining support device according to claim 3, 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) presses the first inclined surface (501) of the limit block (5), the limit block (5) can be driven to separate from the guide rail (13).

5. The underground metal mine mining support device according to claim 4, characterized in that: A buffer spring I is connected between the baffle plate 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 rotating rod (15) at the bottom and the bracket (1), and the two baffle plates 2 (4) are slidably connected to the two rotating rods (15) respectively.

6. The underground metal mine mining support device according to claim 5, characterized in that: One end of the trigger rod 1 (6) is fixedly connected to the baffle plate 1 (3) on the corresponding side, and the other end of the trigger rod 1 (6) slides through the bracket (1) on the corresponding side; one end of the trigger rod 2 (7) is slidably connected to the baffle plate 2 (4) on the corresponding side, and the other end of the trigger rod 2 (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 2 (7) on the corresponding side; when the trigger rod 2 (7) is pressed and moved downward, the bottom end of the trigger rod 2 (7) presses the second inclined surface (502) of the limit block (5) to drive the limit block (5) to leave the guide rail (13).

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

8. The underground metal mine mining support device according to claim 7, 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).

9. A method for supporting underground metal mining, characterized in that: The method adopts an underground metal mine mining support device as claimed in claim 7 or 8, and the method comprises the following steps: S1: Impact absorption and early warning: When baffle plate 1 (3) or baffle plate 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 plate 1 (3) or baffle plate 2 (4) exceeds a preset safety threshold, the warning light (10) lights up and warns in advance; S2: the support plate (2) rotates: when the impact force exceeds the absorption limit of the buffer spring I or the buffer spring III, the baffle plate 1 (3) or the baffle plate 2 (4) will further compress the corresponding buffer spring I or the buffer spring III and produce a larger displacement. At this time, the 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 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 the limit block (5) finally slides off the guide rail (13), releasing the rotation restriction on 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) will cause 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, and 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), and the protective belt (902) covers the formed triangular space around, forming an additional protective layer.

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