Temporary supporting device for underground mining and using method thereof

Abstract

The invention discloses a temporary support device for underground mining and a use method thereof, the temporary support device comprises a lower support frame, a plurality of first mounting seats and second mounting seats are uniformly distributed on the left side wall and the right side wall of the lower support frame; the number of the lifting foot stools is the same as that of the first mounting seats, and each lifting foot stool is fixedly mounted on the first mounting seat corresponding to the lifting foot stool; the upper supporting frame is arranged over the lower supporting frame, and steel wire meshes are installed in frame openings of the upper supporting frame. According to the device, the lower supporting frame and the upper supporting frame are connected through the multiple self-adaptive supporting assemblies, the self-adaptive supporting assemblies have certain elastic receding, the upper supporting frame can be tightly attached to the top faces of various inclined roadways, and then temporary supporting operation on the top faces of the roadways is rapidly completed.

Description

Technical Field

[0001] The present invention specifically relates to the technical field of mining tunnel support, and in particular to a temporary support device for underground mining and a method of using the same. Background Art

[0002] As an indispensable equipment in underground mining operations, the support device can effectively prevent surrounding rock collapse and protect the safety of workers during tunnel excavation or mining operations. Due to the complex and changeable conditions at underground mining sites, the top and ground surfaces of the tunnels are not parallel, so the support hydraulic cylinders need to be independently controlled and adjusted to a suitable height until the top of the tunnel is temporarily supported. In this process, it is difficult to adjust the height of the hydraulic cylinders. If any hydraulic cylinder is adjusted too high, it is easy to cause pressure loss on the top of the tunnel. If any hydraulic cylinder is adjusted too low, the top of the tunnel cannot be closely attached to the support device, which affects the overall support strength of the support device. Summary of the invention

[0003] To this end, the present invention proposes a temporary support device for underground mining and a method of using the same to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a temporary support device for underground mining, comprising:

[0005] The lower support frame has a plurality of evenly distributed first mounting seats and second mounting seats disposed on both left and right side walls;

[0006] Elevating tripods, the number of which is the same as the number of the first mounting seats, and each of the elevating tripods is fixedly mounted on the first mounting seat corresponding thereto;

[0007] An upper support frame, which is arranged directly above the lower support frame, and each frame opening of the upper support frame is installed with a wire mesh;

[0008] And an adaptive support assembly, two of the adaptive support assemblies are fixed in each of the second mounting seats, and the top end of each of the adaptive support assemblies is mounted on the upper support frame, thereby providing multi-angle support to the upper support frame.

[0009] Further, as a preference, the lifting tripod comprises

[0010] A support rod, both ends of which are fixed with universal wheels;

[0011] A hydraulic cylinder, the bottom end of which is fixed to the center of the top surface of the support rod, and the top end of which is fixed to the first mounting seat;

[0012] Two side rods are provided, and the two side rods are symmetrically arranged with respect to the hydraulic cylinder, and the two ends of the side rods are respectively fixed to the hydraulic cylinder and the supporting rod;

[0013] and a reinforcing plate, which uses bolts to fix and connect the two side rods.

[0014] Furthermore, preferably, a notch is provided on the bottom surface of the upper support frame and directly above each of the adaptive support components, so that the spherical steering head on the top of the adaptive support component can extend into the upper support frame along the notch direction, and the spherical steering head can be rolled in a rolling seat on the top wall of the support frame.

[0015] Further, preferably, the adaptive support assembly comprises

[0016] A support seat, a slip ring is fixed in the top port thereof, and a gas injection plug is inserted in the bottom port thereof;

[0017] An inner lining body is fixed in the support seat, and the outer wall of the inner lining body is in contact with the inner wall of the support seat;

[0018] A bottom bracket is fixed on the inner bottom of the lining body, and a fixing rod is fixedly mounted on the bottom bracket;

[0019] A spring seat, which is movably arranged in the inner lining and is located directly above the bottom bracket, one end of a pressure tube is fixed on the top surface of the spring seat, the other end of the pressure tube passes through the slip ring and extends out, and then is fixedly connected to the spherical steering head;

[0020] and a spring connected between the base and the spring seat;

[0021] The top end of the fixing rod penetrates into the inner cavity of the pressing tube and is then fixedly connected to the sliding block, and the sliding block is matched and slidably arranged in the inner cavity of the pressing tube.

[0022] Further, as a preference, a plurality of equally spaced locking grooves are symmetrically arranged on the left and right inner walls of the lining body, and the side walls of each of the locking grooves are chamfered.

[0023] Further, preferably, both left and right ends of the spring seat are provided with U-shaped grooves, a locking mechanism is rotatably installed in each of the U-shaped grooves, and the locking mechanisms and locking grooves located in the same row can cooperate to lock the spring seat.

[0024] Further, as a preference, the locking mechanism comprises

[0025] A rotation pin, which is rotatably mounted in the U-shaped groove;

[0026] A locking rod, which is fixedly connected to the side wall of the rotating pin through a connecting block;

[0027] And a cylinder, whose fixed end is fixed on the spring seat and whose movable end is hinged on the locking rod. The gas injection end of the cylinder is connected with the air hole of the gas injection plug through an air pipe. The cylinder can push the locking rod to flip slightly and crimp the locking rod into the locking groove adjacent to it.

[0028] Further, preferably, the top of the locking rod is set as a folded end, and the width of the folded end is greater than the length between two opposite groove walls of the U-shaped groove, so that the end of the spring seat can limit the folded end of the locking rod.

[0029] A method for using a temporary support device for underground mining, comprising the following steps:

[0030] Step 1: Before mining operations, check the overall connectivity of the support equipment, then move it into the mining tunnel and lock the universal wheels;

[0031] Step 2: Control the hydraulic cylinder to synchronously lift, based on the elasticity of the adaptive support assembly, until the upper support frame is closely fitted with the top surface of the tunnel, and then stop the lifting action;

[0032] Step 3: Use an air pump to supply air to each cylinder, so that each cylinder pushes the locking rod to slightly flip around the rotating pin until the folded end of the locking rod abuts against the spring seat, and the locking rod is pressed into the locking groove adjacent to it, so that it remains stationary under the downward pressure of the spring seat, thereby completing the temporary support operation on the top surface of the tunnel;

[0033] Step 4: After the mining is completed, remove the air pump and control the hydraulic cylinder to descend synchronously. The upper support frame will be separated from the top surface of the tunnel. When there is no downward pressure, the steel spring will recover elastically and drive the spring seat back to its position, and then the support device will be removed.

[0034] The present invention adopts the above technology and has the following beneficial effects compared with the existing technology: in the device of the present invention, the lower support frame and the upper support frame are connected by multiple adaptive support components, wherein the adaptive support components have a certain elasticity, so that the upper support frame can be tightly attached to various inclined tunnel top surfaces, and then an air pump is used to supply air to each cylinder, so that each cylinder pushes the locking rod to rotate around the pin for a small flip until the folded end of the locking rod is against the spring seat, and the locking rod is pressed into the locking groove adjacent to it, so that it remains stationary under the downward pressure of the spring seat, thereby completing the temporary support operation on the tunnel top surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1It is a three-dimensional structural schematic diagram of a temporary support device for underground mining;

[0036] Figure 2 It is a schematic diagram of the side structure of a temporary support device for underground mining;

[0037] Figure 3 It is a schematic diagram of the structure of a lifting tripod in a temporary support device for underground mining;

[0038] Figure 4 A schematic diagram of the internal structure of an adaptive support assembly in a temporary support device for underground mining;

[0039] Figure 5 for Figure 4 Enlarged schematic diagram of part A.

[0040] In the figure: 1. wire mesh; 2. upper support frame; 3. lower support frame; 4. lifting tripod; 5. first mounting seat; 6. adaptive support assembly; 7. second mounting seat; 41. reinforcement plate; 42. side rod; 43. universal wheel; 44. support rod; 45. hydraulic cylinder; 601. spherical steering head; 602. pressure pipe; 603. slider; 604. fixing rod; 605. support seat; 606. steel spring; 607. lining body; 608. air injection plug; 609. bottom support; 610. turn pin; 611. spring seat; 612. cylinder; 613. air pipe; 614. locking groove; 615. locking rod. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example: Please refer to the attached Figure 1-5 The present invention provides a technical solution: a temporary support device for underground mining, comprising:

[0043] The lower support frame 3 has a plurality of evenly distributed first mounting seats 5 and second mounting seats 7 disposed on both left and right side walls;

[0044] The number of the elevating legs 4 is the same as that of the first mounting bases 5, and each elevating leg 4 is fixedly mounted on the first mounting base 5 corresponding thereto;

[0045] The upper support frame 2 is arranged directly above the lower support frame 3, and each frame opening of the upper support frame 2 is installed with a wire mesh 1;

[0046] And an adaptive support assembly 6, two adaptive support assemblies 6 are fixed in each second mounting seat 7, and the top end of each adaptive support assembly 6 is mounted on the upper support frame 2, thereby providing multi-angle support to the upper support frame 2;

[0047] Specifically, the lower support frame 3 and the upper support frame 2 are connected by multiple adaptive support components 6, wherein the lower support frame 3 is synchronously lifted by multiple lifting legs 4, and the upper support frame 2 can be adjusted to various inclination angles relative to the lower support frame 3 to meet the purpose of adaptive top support of the alley top.

[0048] In this embodiment, the lifting stand 4 includes

[0049] A support rod 44, both ends of which are fixed with universal wheels 43;

[0050] A hydraulic cylinder 45, whose bottom end is fixed to the center position of the top surface of the support rod 44, and whose top end is fixed to the first mounting seat 5;

[0051] Two side rods 42 are provided, and the two side rods 42 are symmetrically arranged about the hydraulic cylinder 45, and the two ends of the side rod 42 are respectively fixed to the hydraulic cylinder 45 and the support rod 44;

[0052] and a reinforcing plate 41, which is fixedly connected to two side bars 42 by bolts;

[0053] It should be noted that the hydraulic cylinders 45 are all raised or lowered synchronously.

[0054] In this embodiment, a notch is provided on the bottom surface of the upper support frame 2 and directly above each adaptive support assembly 6, so that the spherical steering head 601 on the top of the adaptive support assembly 6 can extend into the upper support frame 2 along the notch direction, and the spherical steering head 601 can be mounted in a rolling seat on the inner top wall of the support frame 2 in a rolling manner;

[0055] It should be supplemented that the spherical steering head 601 is limited and rollingly arranged in a rolling seat (not shown in the figure), so that the upper support frame 2 can be adjusted at multiple angles.

[0056] In this embodiment, the adaptive support assembly 6 includes

[0057] A support seat 605, a slip ring is fixed in its top port, and a gas injection plug 608 is inserted in its bottom port;

[0058] The lining body 607 is fixed in the support seat 605, and the outer wall of the lining body 607 is in contact with the inner wall of the support seat 605;

[0059] A bottom bracket 609 is fixed on the inner bottom of the lining body 607, and a fixing rod 604 is fixedly mounted on the bottom bracket 609;

[0060] The spring seat 611 is movably disposed in the inner lining body 607 and is located directly above the bottom bracket 609. One end of the pressing tube 602 is fixed on the top surface of the spring seat 611. The other end of the pressing tube 602 passes through the slip ring and extends out, and then is fixedly connected to the spherical steering head 601.

[0061] and a spring 606 connected between the base 609 and the spring seat 611;

[0062] The top end of the fixing rod 604 penetrates into the inner cavity of the pressing tube 602 and is then fixedly connected to the sliding block 603 , and the sliding block 603 is matched and slidably arranged in the inner cavity of the pressing tube 602 .

[0063] In this embodiment, a plurality of locking grooves 614 are symmetrically arranged on the left and right inner walls of the lining body 607 and are distributed at equal intervals, and the side walls of each locking groove 614 are chamfered.

[0064] In this embodiment, both left and right ends of the spring seat 611 are provided with U-shaped grooves, and a locking mechanism is rotatably installed in each U-shaped groove, and the locking mechanism and the locking groove 614 located in the same row can cooperate to lock the spring seat 611.

[0065] In this embodiment, the locking mechanism includes

[0066] A rotation pin 610, which is rotatably mounted in the U-shaped groove;

[0067] A locking rod 615, which is fixedly connected to the side wall of the rotating pin 610 through a connecting block;

[0068] And the cylinder 612, whose fixed end is fixed on the spring seat 611, and whose movable end is hinged on the locking rod 615. The gas injection end of the cylinder 612 is connected with the air hole of the gas injection plug 608 through the air pipe 613. The cylinder 612 can push the locking rod 615 to flip slightly and crimp the locking rod 615 into the locking groove 614 adjacent to it.

[0069] In this embodiment, the top of the locking rod 615 is set as a folded end, and the width of the folded end is greater than the length between the two opposite groove walls of the U-shaped groove, so that the end of the spring seat 611 can limit the folded end of the locking rod 615.

[0070] A method for using a temporary support device for underground mining, comprising the following steps

[0071] Step 1: Before mining operations, check the overall connectivity of the support equipment, then move it into the mining tunnel and lock the universal wheels 43;

[0072] Step 2: Control the hydraulic cylinder to synchronously lift, based on the elasticity of the adaptive support assembly, until the upper support frame 3 is closely fitted to the top surface of the tunnel, and then stop the lifting action;

[0073] Specifically, since the adaptive support assembly has a certain elastic retraction, if part of the upper support frame 3 contacts the top surface of the tunnel, the adaptive support assembly of this part will elastically give way, and the elastic giving way space of the adaptive support assembly can be customized according to the actual situation of the mining area;

[0074] Step 3: Use an air pump to supply air to each cylinder, so that each cylinder pushes the locking rod 615 to slightly flip around the rotating pin 610 until the folded end of the locking rod 615 abuts against the spring seat 611, and the locking rod 615 is pressed into the locking groove 614 adjacent to it, so that it remains stationary under the downward pressure of the spring seat 611, thereby completing the temporary support operation on the top surface of the tunnel;

[0075] Step 4: After the mining is finished, the air pump is removed, and the hydraulic cylinder is controlled to descend synchronously, the upper support frame 3 is separated from the top surface of the tunnel, and the steel spring 606 elastically recovers and drives the spring seat 611 to return to its position when there is no downward pressure, and then the support device is removed;

[0076] It should be added that when the spring seat 611 moves upward and returns to its original position, the locking rod 615 first moves and contacts the inner top wall of the locking groove. Then, with the help of the reverse thrust of the locking groove, the locking rod 615 can be flipped toward the fixed rod 604. In other words, the distance between the upper and lower groove walls of the locking groove can allow the locking rod 615 to move out of the locking groove during the upward movement.

[0077] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temporary support device for underground mining, characterized in that: It includes: A lower support frame (3), with a plurality of evenly distributed first mounting seats (5) and second mounting seats (7) disposed on both left and right side walls; Elevating legs (4), the number of which is the same as the number of the first mounting seats (5), and each of the elevating legs (4) is fixedly mounted on the first mounting seat (5) corresponding thereto; An upper support frame (2) is arranged directly above the lower support frame (3), and a steel wire mesh (1) is installed in each frame opening of the upper support frame (2); And an adaptive support assembly (6), two of the adaptive support assemblies (6) are fixed in each of the second mounting seats (7), and the top end of each of the adaptive support assemblies (6) is mounted on the upper support frame (2), thereby providing multi-angle support to the upper support frame (2).

2. A temporary support device for underground mining according to claim 1, characterized in that: The lifting stand (4) comprises A support rod (44) with universal wheels (43) fixed at both ends; A hydraulic cylinder (45), the bottom end of which is fixed at the center position of the top surface of the support rod (44), and the top end of which is fixed on the first mounting seat (5); Two side rods (42) are provided, and the two side rods (42) are symmetrically arranged with respect to the hydraulic cylinder (45), and the two ends of the side rod (42) are respectively fixed to the hydraulic cylinder (45) and the support rod (44); and a reinforcing plate (41) which uses bolts to fix and connect the two side rods (42).

3. A temporary support device for underground mining according to claim 1, characterized in that: A notch is provided on the bottom surface of the upper support frame (2) and directly above each of the adaptive support assemblies (6), so that the spherical steering head (601) at the top of the adaptive support assembly (6) can extend into the upper support frame (2) along the direction of the notch, and the spherical steering head (601) can be mounted in a rolling manner in a rolling seat on the inner top wall of the support frame (2).

4. A temporary support device for underground mining according to claim 3, characterized in that: The adaptive support assembly (6) comprises A support seat (605) having a slip ring fixed in its top port and a gas injection plug (608) inserted in its bottom port; An inner lining body (607) is fixed in the support seat (605), and the outer wall of the inner lining body (607) is in contact with the inner wall of the support seat (605); A bottom bracket (609) is fixed on the inner bottom of the lining body (607), and a fixing rod (604) is fixedly mounted on the bottom bracket (609); A spring seat (611) is movably arranged in the inner lining body (607) and is located directly above the base (609); one end of a pressing tube (602) is fixed on the top surface of the spring seat (611); the other end of the pressing tube (602) passes through the slip ring and extends out, and is then fixedly connected to the spherical steering head (601); and a spring (606) connected between the base (609) and the spring seat (611); The top end of the fixing rod (604) penetrates into the inner cavity of the pressing tube (602) and is then fixedly connected to the slider (603), and the slider (603) is matched and slidably arranged in the inner cavity of the pressing tube (602).

5. A temporary support device for underground mining according to claim 4, characterized in that: A plurality of locking grooves (614) distributed at equal intervals are symmetrically arranged on the left and right inner walls of the lining body (607), and the side walls of each locking groove (614) are rounded.

6. A temporary support device for underground mining according to claim 5, characterized in that: The left and right ends of the spring seat (611) are both provided with U-shaped grooves, and a locking mechanism is rotatably installed in each of the U-shaped grooves, and the locking mechanisms and locking grooves (614) located in the same row can cooperate to lock the spring seat (611).

7. A temporary support device for underground mining according to claim 6, characterized in that: The locking mechanism comprises A rotating pin (610) rotatably mounted in the U-shaped groove; A locking rod (615) fixedly connected to the side wall of the rotating pin (610) via a connecting block; and a cylinder (612), whose fixed end is fixed on the spring seat (611) and whose movable end is hinged on the locking rod (615); the gas injection end of the cylinder (612) is connected to the air hole of the gas injection plug (608) through an air pipe (613); the cylinder (612) can push the locking rod (615) to slightly flip and press the locking rod (615) into a locking groove (614) adjacent to it.

8. A temporary support device for underground mining according to claim 7, characterized in that: The top of the locking rod (615) is arranged as a folded end, the width of the folded end being greater than the length between two opposite groove walls of the U-shaped groove, so that the end of the spring seat (611) can limit the folded end of the locking rod (615).

9. A method for using a temporary support device for underground mining, characterized in that: It includes the following steps: Step 1: Before mining operations, check the overall connectivity of the support equipment, then move it into the mining tunnel and lock the universal wheels (43); Step 2: Control the hydraulic cylinder (45) to synchronously lift, based on the elasticity of the adaptive support assembly, until the upper support frame (3) is closely attached to the top surface of the tunnel, and then stop the lifting action; Step 3: Use an air pump to supply air to each air cylinder (612), so that each air cylinder (612) pushes the locking rod (615) to slightly flip around the rotating pin (610), until the folded end of the locking rod (615) abuts against the spring seat (611), and the locking rod (615) is pressed into the locking groove (614) adjacent to it, so that the spring seat (611) remains in a stationary state under the downward pressure, thereby completing the temporary support operation on the top surface of the tunnel; Step 4: After the mining is completed, the air pump is removed and the hydraulic cylinder is controlled to descend synchronously, the upper support frame (3) is separated from the top surface of the tunnel, and the steel spring (606) elastically recovers and drives the spring seat (611) back to its original position when there is no downward pressure, and then the support device is removed.

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