Supporting device for mining

Abstract

The invention relates to the technical field of mining, and discloses a mining supporting device which comprises a hydraulic supporting rod, a waterproof assembly is arranged on the outer side of the hydraulic supporting rod, and a dustproof assembly is arranged on the outer side of the hydraulic supporting rod; the waterproof assembly comprises a fixing ring, a placement bin is fixedly connected to one side of the outer surface of the fixing ring, a storage bag is arranged on one side of the inner wall of the placement bin, a plurality of first supporting rods are fixedly connected to one side of the outer surface of the fixing ring, and the ends, away from the fixing ring, of the first supporting rods are fixedly connected to the outer surface of a hydraulic supporting rod. The invention aims to solve the problems that a sealing ring of a connecting port of a piston and a main rod of an existing single-rod hydraulic rod is directly exposed in an underground severe environment with high humidity, high dust and strong corrosion, mine water and coal rock dust are extremely easy to intrude into a sealing gap, the sealing ring is abraded and aged, hydraulic oil leaks inwards or outwards, and the service life of the single-rod hydraulic rod is influenced. The initial supporting force of the supporting column is not enough, and the movable column shrinks downwards.

Description

Technical Field

[0001] This invention relates to the field of mining technology, specifically to a support device for mining. Background Technology

[0002] The single-rod hydraulic support device for mining is a single-unit support equipment suitable for the narrow working space of underground mines. It uses hydraulic power as its core and achieves point-to-point support for the roof and floor of the mine or the sides of the roadway through the extension and retraction of a single hydraulic cylinder. It is usually used in conjunction with articulated roof beams and features a compact structure, flexible operation, and convenient layout. It is widely used in narrow areas where large hydraulic supports cannot enter, such as conventional mining faces, roadway advance support, and temporary protection of the edge of goaf. It is a key piece of equipment to ensure the stability of the underground working space and prevent roof collapse. The existing single-rod hydraulic rod has its piston and main rod connection sealing ring directly exposed to the harsh environment of high humidity, high dust and strong corrosion in the mine. Mine water and coal dust can easily invade the sealing gap, causing the sealing ring to wear and age, which in turn leads to internal or external leakage of hydraulic oil, resulting in insufficient initial support force of the support, shrinkage of the piston, and in severe cases, direct loss of support capacity. Summary of the Invention

[0003] The purpose of this invention is to provide a support device for mining, which solves the problem in the prior art where the sealing ring of the piston-main rod connection of the existing single-rod hydraulic rod is directly exposed to the harsh environment of high humidity, high dust and strong corrosion underground. Mine water and coal dust can easily invade the sealing gap, causing the sealing ring to wear and age, which in turn leads to internal or external leakage of hydraulic oil, resulting in insufficient initial support force of the support, shrinkage of the piston, and in severe cases, direct loss of support capacity.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a mining support device, including a hydraulic support rod, wherein a waterproof component is provided on the outside of the hydraulic support rod, and a dustproof component is provided on the outside of the hydraulic support rod; The waterproof component includes a fixing ring, and a placement chamber is fixedly connected to one side of the outer surface of the fixing ring. A storage bag is provided on one side of the inner wall of the placement chamber. A plurality of first support rods are fixedly connected to one side of the outer surface of the fixing ring, and the ends of the plurality of first support rods away from the fixing ring are all fixedly connected to the outer surface of the hydraulic support rod. The dustproof component includes a support ring, and a plurality of brushes are fixedly connected to one side of the outer surface of the support ring. A plurality of second support rods are fixedly connected to one side of the outer surface of the support ring, and the ends of the plurality of second support rods away from the support ring are all fixedly connected to the outer surface of the placement chamber.

[0005] Preferably, the outer surface of the hydraulic support rod is fixedly connected to two sets of first support blocks, and the first connecting rod is rotatably embedded inside each of the multiple first support blocks.

[0006] Preferably, the outer surfaces of both sets of the first connecting rods are rotatably fitted with first connecting rings, and the outer surfaces of both sets of the first connecting rings are fixedly connected with fixing rods.

[0007] Preferably, the outer surfaces of both sets of fixed rods are fixedly connected with second connecting rings, and the interiors of both sets of second connecting rings are rotatably fitted with second connecting rods.

[0008] Preferably, the outer surfaces of both sets of second connecting rods are rotatably fitted with second support blocks, and the outer surfaces of multiple second support blocks are fixedly connected with base plates.

[0009] Preferably, the storage bag is internally provided with a modified superabsorbent resin, which is formed by grafting modification of sodium polyacrylate and acrylamide-acrylic acid copolymer to introduce functional groups such as amino and hydroxyl groups, and the storage bag is made of flame-retardant polyurethane fabric.

[0010] Compared with the prior art, the beneficial effects achieved by the present invention are: When the hydraulic support rod of this invention is in use, multiple base plates contact the ground by unfolding the fixed rods on both sides. While the hydraulic support rod supports the mine tunnel, workers place storage bags into the storage compartment. The interior of the storage bag is made of modified superabsorbent resin, using sodium polyacrylate and acrylamide-acrylic acid copolymer as the base material. Through graft modification, functional groups such as amino and hydroxyl groups are introduced. The storage bag itself is made of flame-retardant polyurethane fabric with multiple pores on its surface. When wastewater from the mine tunnel is about to flow into the hydraulic support rod through the output end, it is absorbed by the superabsorbent resin inside the storage bag. The superabsorbent resin adsorbs wastewater. Modified superabsorbent resin expands rapidly upon contact with mine water, forming a dense, elastic gel layer that tightly adheres to the gap between the inner surface of the hydraulic support rod and the sealing ring. This blocks the channels for moisture and dust to enter the sealing system, reducing the risk of leakage caused by moisture and wear of the sealing ring due to impurities. Furthermore, the amino and hydroxyl functional groups in the gel layer can adsorb corrosive ions in the mine water, such as chloride and sulfate ions, while continuously adsorbing corrosive gases such as hydrogen sulfide and carbon dioxide. This prevents corrosion of the inner rod and piston of the hydraulic support rod, extending the service life of the hydraulic support rod and improving the reliability of the sealing system.

[0011] Secondly, the gas adsorption capacity obtained by grafting modification of the resin substrate of this invention can continuously capture harmful gases such as methane and hydrogen sulfide in the surrounding environment, reduce the concentration of harmful gases in the local area around the hydraulic rod, and reduce the risk of explosion and poisoning caused by gas leakage into the work space. During daily use, the storage bag prevents impurities from entering. When the hydraulic support rod is used and retracted, the dust on the inner surface of the hydraulic support rod is cleaned by a brush. At the same time, the expanded storage bag wipes the dust on the inner surface of the rod, reducing the wear inside the hydraulic support rod caused by dust entering the sealing gap, and also reducing the harm of dust to miners' health. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is one of the three-dimensional structural schematic diagrams of the present invention; Figure 3 This is a second schematic diagram of the three-dimensional structure of the present invention; Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention.

[0013] The components are: 1. Hydraulic support rod; 101. First support block; 2. Fixing ring; 201. First support rod; 202. Placement compartment; 3. Storage bag; 4. Support ring; 401. Second support rod; 5. Brush; 6. Fixing rod; 601. First connecting ring; 602. First connecting rod; 603. Second connecting ring; 604. Second connecting rod; 7. Base plate; 701. Second support block. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0015] Please see Figures 1-4 A mining support device includes a hydraulic support rod 1, with a waterproof component and a dustproof component provided on the outer side of the hydraulic support rod 1. The waterproof component includes a fixing ring 2, and a placement chamber 202 is fixedly connected to one side of the outer surface of the fixing ring 2. A storage bag 3 is provided on one side of the inner wall of the placement chamber 202. A plurality of first support rods 201 are fixedly connected to one side of the outer surface of the fixing ring 2, and the ends of the plurality of first support rods 201 away from the fixing ring 2 are all fixedly connected to the outer surface of the hydraulic support rod 1. The dustproof component includes a support ring 4, and a plurality of brushes 5 are fixedly connected to one side of the outer surface of the support ring 4. A plurality of second support rods 401 are fixedly connected to one side of the outer surface of the support ring 4, and the ends of the plurality of second support rods 401 away from the support ring 4 are all fixedly connected to the outer surface of the placement chamber 202.

[0016] Through the above technical solution, when the hydraulic support rod 1 is in use, by unfolding the fixed rods 6 on both sides to allow multiple base plates 7 to contact the ground, the hydraulic support rod 1 supports the mine tunnel. Meanwhile, the worker places the storage bag 3 into the placement chamber 202. The interior of the storage bag 3 is made of modified superabsorbent resin, using sodium polyacrylate and acrylamide-acrylic acid copolymer as the base material. Through graft modification, functional groups such as amino and hydroxyl groups are introduced. The storage bag 3 itself is made of flame-retardant polyurethane fabric with multiple pores on its surface. When wastewater from the mine tunnel flows into the hydraulic support rod 1 through its output end, the water is absorbed by the resin. The superabsorbent resin inside the storage bag 3 adsorbs wastewater. The modified superabsorbent resin expands rapidly upon contact with mine water, forming a dense, elastic gel layer that tightly adheres to the gap between the inner rod surface of the hydraulic support rod 1 and the sealing ring. This blocks the channels for moisture and dust to enter the sealing system, reducing the risk of leakage caused by moisture and wear of the sealing ring due to impurities. Furthermore, the functional groups such as amino and hydroxyl groups in the gel layer can adsorb corrosive ions in the mine water, such as chloride and sulfate ions, while continuously adsorbing corrosive gases such as hydrogen sulfide and carbon dioxide. This prevents the inner rod and piston of the hydraulic support rod 1 from being corroded, extending the service life of the hydraulic support rod 1 and the reliability of the sealing system.

[0017] Through the above technical solution, the gas adsorption capacity obtained by grafting modification of the resin substrate can continuously capture harmful gases such as methane and hydrogen sulfide in the surrounding environment, reduce the concentration of harmful gases in the local area around the hydraulic rod, and reduce the risk of explosion and poisoning caused by gas leakage into the work space. During daily use, the storage bag 3 prevents impurities from entering. When the hydraulic support rod 1 is used and retracted, the dust on the inner surface of the hydraulic support rod 1 is cleaned by the brush 5. At the same time, the expanded storage bag 3 wipes the dust on the inner surface of the rod, reducing the wear inside the hydraulic support rod 1 caused by dust entering the sealing gap, and also reducing the harm of dust to miners' health.

[0018] Specifically, two sets of first support blocks 101 are fixedly connected to the outer surface of the hydraulic support rod 1, and a first connecting rod 602 is rotatably embedded inside each of the multiple first support blocks 101.

[0019] The above technical solution connects the first support block 101 and the hydraulic support rod 1 via the first connecting rod 602.

[0020] Specifically, the outer surfaces of both sets of first connecting rods 602 are rotatably fitted with first connecting rings 601, and the outer surfaces of both sets of first connecting rings 601 are fixedly connected with fixing rods 6.

[0021] The above technical solution connects the fixing rod 6 and the first connecting rod 602 via the first connecting ring 601.

[0022] Specifically, the outer surfaces of both sets of fixing rods 6 are fixedly connected with second connecting rings 603, and the interiors of both sets of second connecting rings 603 are rotatably fitted with second connecting rods 604.

[0023] The above technical solution connects the fixing rod 6 and the second connecting rod 604 via the second connecting ring 603.

[0024] Specifically, the outer surfaces of the two sets of second connecting rods 604 are rotatably fitted with second support blocks 701, and the outer surfaces of the multiple second support blocks 701 are fixedly connected with base plates 7.

[0025] The above technical solution connects the base plate 7 and the second connecting rod 604 via the second support block 701.

[0026] Specifically, the storage bag 3 is internally equipped with a modified superabsorbent resin, which is formed by grafting modification of sodium polyacrylate and acrylamide-acrylic acid copolymer to introduce functional groups such as amino and hydroxyl groups. The storage bag 3 is made of flame-retardant polyurethane fabric.

[0027] The above technical solution allows for the adsorption of wastewater and exhaust gas from the mine through the modified superabsorbent resin in the storage bag 3.

[0028] In use, when the hydraulic support rod 1 is in operation, by unfolding the fixing rods 6 on both sides to allow multiple base plates 7 to contact the ground, the hydraulic support rod 1 supports the mine tunnel. Meanwhile, the worker places the storage bag 3 into the placement chamber 202. The interior of the storage bag 3 is made of modified superabsorbent resin, using sodium polyacrylate and acrylamide-acrylic acid copolymer as the base material. Through graft modification, functional groups such as amino and hydroxyl groups are introduced. The storage bag 3 itself is made of flame-retardant polyurethane fabric with multiple pores on its surface. When wastewater from the mine tunnel flows into the hydraulic support rod 1 through its output end, the storage bag absorbs the water. The super absorbent resin inside bag 3 adsorbs wastewater. The modified super absorbent resin expands rapidly upon contact with mine water, forming a dense and elastic gel layer that tightly adheres to the gap between the inner rod surface of hydraulic support rod 1 and the sealing ring. This blocks the channels for moisture and dust to enter the sealing system, reducing the risk of leakage caused by moisture and wear of the sealing ring due to impurities. Furthermore, the functional groups such as amino and hydroxyl groups in the gel layer can adsorb corrosive ions in the mine water, such as chloride ions and sulfate ions, while continuously adsorbing corrosive gases such as hydrogen sulfide and carbon dioxide. This prevents the inner rod and piston of hydraulic support rod 1 from being corroded, extending the service life of hydraulic support rod 1 and the reliability of the sealing system. The resin substrate, through graft modification, acquires gas adsorption capacity that can continuously capture harmful gases such as methane and hydrogen sulfide in the surrounding environment, reducing the concentration of harmful gases in the local area around the hydraulic rod and reducing the risk of explosion and poisoning caused by gas leakage into the work space. During daily use, the storage bag 3 prevents impurities from entering. When the hydraulic support rod 1 is used up and retracted, the brush 5 cleans the dust on the inner surface of the hydraulic support rod 1, while the expanded storage bag 3 wipes the dust on the inner surface of the rod, reducing the wear inside the hydraulic support rod 1 caused by dust entering the sealing gap and also reducing the harm of dust to miners' health.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mining support device, comprising a hydraulic support rod (1), characterized in that: The hydraulic support rod (1) is provided with a waterproof component on its outer side and a dustproof component on its outer side. The waterproof component includes a fixing ring (2), and a placement chamber (202) is fixedly connected to one side of the outer surface of the fixing ring (2). A storage bag (3) is provided on one side of the inner wall of the placement chamber (202). A plurality of first support rods (201) are fixedly connected to one side of the outer surface of the fixing ring (2), and the ends of the plurality of first support rods (201) away from the fixing ring (2) are all fixedly connected to the outer surface of the hydraulic support rod (1). The dustproof component includes a support ring (4), and a plurality of brushes (5) are fixedly connected to one side of the outer surface of the support ring (4). A plurality of second support rods (401) are fixedly connected to one side of the outer surface of the support ring (4), and the ends of the plurality of second support rods (401) away from the support ring (4) are all fixedly connected to the outer surface of the placement chamber (202).

2. The mining support device according to claim 1, characterized in that: Two sets of first support blocks (101) are fixedly connected to the outer surface of the hydraulic support rod (1), and a first connecting rod (602) is rotatably embedded inside the multiple first support blocks (101).

3. A mining support device according to claim 2, characterized in that: The outer surfaces of both sets of first connecting rods (602) are rotatably fitted with first connecting rings (601), and the outer surfaces of both sets of first connecting rings (601) are fixedly connected with fixing rods (6).

4. A mining support device according to claim 3, characterized in that: The outer surfaces of both sets of fixed rods (6) are fixedly connected with second connecting rings (603), and the interiors of both sets of second connecting rings (603) are rotatably fitted with second connecting rods (604).

5. A mining support device according to claim 4, characterized in that: The outer surfaces of the two sets of second connecting rods (604) are rotatably fitted with second support blocks (701), and the outer surfaces of multiple second support blocks (701) are fixedly connected with base plates (7).

6. A mining support device according to claim 1, characterized in that: The storage bag (3) is internally provided with a modified superabsorbent resin, which is formed by grafting modification of sodium polyacrylate and acrylamide-acrylic acid copolymer to introduce functional groups such as amino and hydroxyl groups. The storage bag (3) is made of flame-retardant polyurethane fabric.

Images