Anti-fracture support for coal mining
By adding reinforcement ribs, anchors and adjustment mechanisms to the support structure of coal mine mining, the problem of excessive force under the support rod and poor coordination of the support arc plate is solved, the strength and uniformity of the support structure are improved, and arc shape is prevented by the arc. The support frame is broken.
Patent Information
- Application Number
- CN202420839137.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2024-12-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the existing coal mine mining support devices, the support rod is under too much force and the support arc plate does not match the inner wall of the coal mine, resulting in uneven force on the support arc plate and easy to break.
A support structure including arc-shaped support frame, pillars, reinforcement ribs, anchors, sliders and adjustment mechanisms was designed. By setting reinforcement ribs at the bottom of the support, anchors into the ore rock layer and on the arc-shaped support frame A reinforcement plate is installed, and a slider and adjustment mechanism are used to drive the support block to move upwards to tighten the depressions in the inner wall of the coal mine, thereby improving the overall strength and support force of the support structure, and ensuring that the upper end of the support is uniform.
Improve the overall strength and stiffness of the support structure, avoid the breakage of the support column, enhance the support force at the upper end of the support, ensure that the support structure can withstand greater loads, and through the adjustment mechanism, the support block is pressed against the depressions in the inner wall of the coal mine to prevent arcing. The support frame is subjected to uneven stress to avoid breakage.
Smart Images
Figure CN222141276U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of coal mining support, in particular to a fracture-proof coal mining support. Background Art
[0002] Coal mine support refers to a series of support and protection measures taken during coal mining to ensure the stability and safety of mine tunnels and working faces. The Chinese patent announcement number CN210370725U discloses an anti-fracture coal mining support device, including a support structure, the support structure includes a support arc plate and a support rod, the top of the support rod is fixedly connected to the bottom of the support arc plate, a pressure box is arranged below the support rod, the center of the bottom end of the pressure box is fixedly connected to a fixed cone, a clamping plate is fixedly connected to the bottom center of one side of the pressure box, the pressure box is provided with a clamping groove matching the clamping plate at the bottom center of the side opposite to the side where the clamping plate is located, a first slide groove and a second slide groove are symmetrically provided at the center of the two opposite side surfaces of the pressure box, a first slide groove is slidably connected inside the first slide groove, a second slide block is slidably connected inside the second slide block, a slide block is fixedly connected between the first slide block and the second slide block, a slot matching the support rod is arranged at the top of the slide block, an anti-fracture spring is fixedly arranged at the center of the inner cavity of the pressure box, and the top of the anti-fracture spring is fixedly connected to the bottom end of the slide block.
[0003] The problems existing in the prior art are: first, the pressure box and the supporting arc plate in the above-mentioned support are supported only by support rods, which causes the support rods to be subjected to greater force, and the support rods themselves need to have stronger supporting force; secondly, the upper surface of the supporting arc plate is smooth, while the inner wall of the coal mine cave has depressions and cannot fit well with the supporting arc plate, resulting in uneven force on the supporting arc plate, and therefore further improvement is needed. Utility Model Content
[0004] In view of the problems existing in the prior art, the utility model provides a fracture-resistant support for coal mine mining, which has the advantages of high strength, strong supporting force, and improved uniformity of force on the upper end of the support. It solves the problem that the pressure box and the supporting arc plate in the existing support are supported only by support rods, which causes the support rods to be subjected to large forces and requires the support rods themselves to have strong supporting force. The upper surface of the supporting arc plate is smooth, while the inner wall of the coal mine cave has depressions and cannot fit well with the supporting arc plate, thus causing the problem of uneven force on the supporting arc plate.
[0005] The utility model is implemented as follows: a fracture-proof support for coal mine mining, comprising an arc-shaped support frame and two pillars, the two pillars are fixedly installed at both ends of the arc-shaped support frame, the upper and lower ends of the pillars are fixedly connected with a top plate and a bottom plate respectively, the four side surfaces of the bottom of the pillars are fixedly connected with reinforcing ribs, the bottom of the reinforcing ribs is fixedly connected to the bottom plate, one side of the top plate is fixedly connected with a mounting plate, two anchor rods are plugged into the mounting plate, the anchor rods are plugged into the inner wall of the coal mine cave, the upper surface of the arc-shaped support frame is fixedly connected with a first reinforcing plate, a slide rail and a second reinforcing plate, a plurality of sliders are slidably arranged on the slide rail, each of the sliders is provided with an adjustment mechanism, and the adjustment mechanism is provided with a support block.
[0006] As a preferred embodiment of the utility model, a plurality of adjustment slots are provided on the first reinforcing plate, two second screw rods are fixedly connected to one side of the sliding block, and the two second screw rods are movably arranged in the adjustment slots.
[0007] As a preferred embodiment of the utility model, a fastening nut is provided on the threaded sleeve of the second screw rod, and the fastening nut is tightly pressed against the side surface of the first reinforcing plate.
[0008] As a preferred embodiment of the utility model, the adjustment mechanism includes a bidirectional screw and an adjustment rod, the bidirectional screw and the adjustment rod are rotatably connected in the slider, the adjustment rod is vertically arranged with the bidirectional screw, and one end of the adjustment rod away from the bidirectional screw extends out of the slider.
[0009] As a preferred embodiment of the utility model, threaded sleeves are provided on the rod body at both ends of the bidirectional screw, a worm wheel is fixedly provided on the middle rod body of the bidirectional screw, and a worm is fixedly connected to one end of the adjusting rod close to the bidirectional screw, and the worm is meshingly connected to the worm wheel.
[0010] As a preferred embodiment of the utility model, the two screw sleeves are fixedly connected to the outside with movable blocks, the two movable blocks are slidably connected to the inside of the sliding block, and the two movable blocks are rotatably connected to the inside with support plates.
[0011] As a preferred embodiment of the present invention, both ends of the lower surface of the support block are fixedly connected with mounting seats, and the upper ends of the two support plates are rotatably connected to the two mounting seats respectively.
[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0013] 1. The utility model can improve the overall strength and rigidity of the support structure by arranging reinforcing ribs on all four sides of the bottom of the pillar, so that it can withstand a larger load. By arranging a mounting plate and anchoring the anchor rod into the rock formation of the mine, it can provide additional support for the arc-shaped support frame, thereby avoiding the pillar from breaking.
[0014] 2. The utility model can improve the supporting force of the upper end of the support by arranging the first reinforcing plate and the second reinforcing plate on the arc-shaped support frame.
[0015] 3. The utility model supports the depression of the inner wall of the coal mine through the support block to prevent the arc-shaped support frame from failing to contact the inner wall of the coal mine and causing uneven force. The slider drives the support block to move to the depression, and the adjustment mechanism drives the support block to move upward until it is close to the inner wall of the depression, thereby improving the uniformity of force on the upper end of the support and preventing the arc-shaped support frame from breaking. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;
[0017] Figure 2 It is a partial cross-sectional three-dimensional structural schematic diagram of the utility model;
[0018] Figure 3 It is an exploded view of the local structure of the utility model.
[0019] In the figure: 1. pillar; 101. bottom plate; 102. reinforcing rib; 103. top plate; 104. mounting plate; 105. anchor rod; 106. arc-shaped support frame; 2. adjusting mechanism; 201. bidirectional screw; 202. worm gear; 203. adjusting rod; 204. worm; 205. screw sleeve; 206. movable block; 207. support plate; 208. mounting seat; 3. first reinforcing plate; 301. adjusting slot; 4. second reinforcing plate; 5. slider; 501. second screw; 502. fastening nut; 6. support block; 7. slide rail. DETAILED DESCRIPTION
[0020] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.
[0021] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.
[0022] like Figures 1 to 3As shown, an anti-fracture support for coal mine mining provided by an embodiment of the utility model comprises an arc-shaped support frame 106 and two pillars 1, the two pillars 1 are respectively fixedly installed at both ends of the arc-shaped support frame 106, the upper and lower ends of the pillars 1 are respectively fixedly connected with a top plate 103 and a bottom plate 101, the four side surfaces of the bottom of the pillars 1 are fixedly connected with reinforcing ribs 102, the bottom of the reinforcing ribs 102 is fixedly connected to the bottom plate 101, one side of the top plate 103 is fixedly connected with a mounting plate 104, two anchor rods 105 are plugged into the mounting plate 104, the anchor rods 105 are plugged into the inner wall of the coal mine cave, the upper surface of the arc-shaped support frame 106 is fixedly connected with a first reinforcing plate 3, a slide rail 7 and a second reinforcing plate 4, a plurality of sliders 5 are slidably arranged on the slide rail 7, each slider 5 is provided with an adjustment mechanism 2, and the adjustment mechanism 2 is provided with a support block 6.
[0023] Furthermore, a plurality of adjustment grooves 301 are opened on the first reinforcing plate 3, and two second screws 501 are fixedly connected to one side of the slider 5. The two second screws 501 are movably arranged in the adjustment grooves 301, and a fastening nut 502 is threadedly sleeved on the second screw 501, and the fastening nut 502 is tightly pressed against the side of the first reinforcing plate 3.
[0024] In the present application, by arranging reinforcing ribs 102 on all four sides of the bottom of the pillar 1, the overall strength and rigidity of the support structure can be improved, so that it can withstand a larger load. By arranging a mounting plate 104 and anchoring the anchor rod 105 into the rock formation of the mine, additional support can be provided for the arc support frame 106, thereby preventing the pillar 1 from breaking. By arranging a first reinforcing plate 3 and a second reinforcing plate 4 on the arc support frame 106, the supporting force of the upper end of the support can be improved. The slider 5 is slidably connected to the slide rail 7. The two second screws 501 on each slider 5 move in the adjustment groove 301. The position of the slider 5 can be fixed by tightening the nut 502 and the thread of the second screw 501.
[0025] Furthermore, the adjusting mechanism 2 includes a bidirectional screw 201 and an adjusting rod 203, which are rotatably connected to the slider 5. The adjusting rod 203 is vertically arranged with the bidirectional screw 201, and the end of the adjusting rod 203 away from the bidirectional screw 201 extends out of the slider 5. Screw sleeves 205 are threadedly sleeved on the rod body at both ends of the bidirectional screw 201, and a worm gear 202 is fixedly sleeved on the middle rod body of the bidirectional screw 201. A worm 204 is fixedly connected to the end of the adjusting rod 203 close to the bidirectional screw 201, and the worm 204 is meshed with the worm gear 202. The outsides of the two screw sleeves 205 are fixedly connected to movable blocks 206, and the two movable blocks 206 are slidably connected to the inside of the slider 5. The insides of the two movable blocks 206 are rotatably connected to support plates 207, and both ends of the lower surface of the support block 6 are fixedly connected to mounting seats 208, and the upper ends of the two support plates 207 are rotatably connected to the two mounting seats 208 respectively.
[0026] In the present application, the support block 6 is used to support the depression on the inner wall of the coal mine to prevent the arc-shaped support frame 106 from failing to contact the inner wall of the coal mine and causing uneven force. The slider 5 drives the support block 6 to move to the depression, and drives the support block 6 to move upward through the adjustment mechanism 2 until it is close to the inner wall of the depression. During operation, the worm 204 is driven to rotate by rotating the adjustment rod 203, and the meshing connection between the worm 204 and the worm wheel 202 is used to make the worm wheel 202 drive the bidirectional screw 201 to rotate, and the bidirectional screw 201 drives the two screw sleeves 205 and the movable block 206 to move in a direction close to each other, thereby causing the support plate 207 to rotate and push the support block 6 upward, so that the support block 6 is close to the depression, thereby improving the uniformity of force on the upper end of the support and preventing the arc-shaped support frame 106 from breaking.
[0027] The working principle of this utility model:
[0028] When in use, the anchor rod 105 is anchored into the rock stratum of the mine to provide additional support for the arc support frame 106 to prevent the pillar 1 from breaking. The fastening nut 502 is loosened, and the slider 5 and the support block 6 are driven to move by pushing the second screw 501, and the support block 6 is moved to the depression on the inner wall of the coal mine. The worm 204 is then driven to rotate by rotating the adjusting rod 203. The meshing connection between the worm 204 and the worm wheel 202 drives the bidirectional screw 201 to rotate. The bidirectional screw 201 drives the two screw sleeves 205 and the movable block 206 to move in a direction close to each other, thereby causing the support plate 207 to rotate and push the support block 6 upward so that the support block 6 is pressed against the depression, thereby improving the uniformity of the force on the upper end of the support and preventing the arc support frame 106 from breaking.
[0029] In summary: this anti-fracture coal mine mining support, by arranging reinforcing ribs 102 on all four sides of the bottom of the pillar 1, can improve the overall strength and rigidity of the support structure, so that it can withstand a larger load, by arranging a mounting plate 104 and anchoring the anchor rod 105 into the rock formation of the mine, it can provide additional support for the arc support frame 106, thereby preventing the pillar 1 from breaking, by arranging a first reinforcing plate 3 and a second reinforcing plate 4 on the arc support frame 106, the supporting force of the upper end of the support can be improved, the support block 6 is used to support the depression of the inner wall of the coal mine to prevent the arc support frame 106 from not contacting the inner wall of the coal mine and causing uneven force, the slider 5 drives the support block 6 to move to the depression, and the support block 6 is driven to move upward by the adjustment mechanism 2 until it is close to the inner wall of the depression, thereby improving the uniformity of the force on the upper end of the support and preventing the arc support frame 106 from breaking.
[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0031] 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 fracture-proof support for coal mining, comprising an arc-shaped support frame (106) and two pillars (1), characterized in that: The two pillars (1) are respectively fixedly mounted on the two ends of the arc-shaped support frame (106); the upper and lower ends of the pillars (1) are respectively fixedly connected with a top plate (103) and a bottom plate (101); the four side surfaces of the bottom of the pillars (1) are fixedly connected with reinforcing ribs (102); the bottom of the reinforcing ribs (102) is fixedly connected to the bottom plate (101); one side of the top plate (103) is fixedly connected with a mounting plate (104); two anchor rods (105) are plugged into the mounting plate (104); the anchor rods (105) are plugged into the inner wall of the coal mine cave; the upper surface of the arc-shaped support frame (106) is fixedly connected with a first reinforcing plate (3), a slide rail (7) and a second reinforcing plate (4); a plurality of slide blocks (5) are slidably arranged on the slide rail (7); each of the slide blocks (5) is provided with an adjustment mechanism (2); and the adjustment mechanism (2) is provided with a support block (6).
2. The anti-fracture support for coal mining as claimed in claim 1, characterized in that: The first reinforcing plate (3) is provided with a plurality of adjustment slots (301), and one side of the sliding block (5) is fixedly connected with two second screw rods (501), and the two second screw rods (501) are movably arranged in the adjustment slots (301).
3. The anti-fracture support for coal mining as claimed in claim 2, characterized in that: A fastening nut (502) is threadedly sleeved on the second screw rod (501), and the fastening nut (502) is tightly pressed against the side surface of the first reinforcing plate (3).
4. The anti-fracture support for coal mining as claimed in claim 1, characterized in that: The adjusting mechanism (2) comprises a bidirectional screw (201) and an adjusting rod (203), wherein the bidirectional screw (201) and the adjusting rod (203) are rotatably connected in a slider (5), the adjusting rod (203) is arranged perpendicular to the bidirectional screw (201), and one end of the adjusting rod (203) away from the bidirectional screw (201) extends out of the slider (5).
5. The anti-fracture support for coal mining as claimed in claim 4, characterized in that: Screw sleeves (205) are threadedly sleeved on the rod bodies at both ends of the bidirectional screw rod (201), a worm wheel (202) is fixedly sleeved on the middle rod body of the bidirectional screw rod (201), and a worm (204) is fixedly connected to one end of the adjusting rod (203) close to the bidirectional screw rod (201), and the worm (204) is meshingly connected to the worm wheel (202).
6. A fracture-proof coal mining support as claimed in claim 5, characterized in that: The two screw sleeves (205) are fixedly connected to the outside with movable blocks (206), the two movable blocks (206) are slidably connected to the inside of the slider (5), and the two movable blocks (206) are rotatably connected to the inside with support plates (207).
7. The anti-fracture support for coal mining as claimed in claim 6, characterized in that: Both ends of the lower surface of the support block (6) are fixedly connected with mounting seats (208), and the upper ends of the two support plates (207) are rotatably connected to the two mounting seats (208) respectively.