A device for recovering coal from open-pit mine end wall during zoned mining and its use method

Abstract

The present invention discloses a device for recovering coal from an open-pit mine end wall with zoned mining, comprising a base plate, a first hydraulic cylinder, a carriage, a carriage door assembly and a protective assembly, wherein a carriage is rotatably mounted on the top outer wall of the base plate, two first hydraulic cylinders are rotatably mounted on the top outer wall of the base plate, and one end of a telescopic shaft of the first hydraulic cylinder is rotatably connected to the bottom outer wall of the carriage, a carriage door assembly is arranged on one side of the carriage, and a protective assembly is arranged on the top outer wall of the carriage; the carriage door assembly provided by the present invention provides power for opening or closing an upper carriage door and a lower carriage door through a second hydraulic cylinder, and cooperates with the first hydraulic cylinder, thereby facilitating unloading of coal blocks in the carriage, and the unloading is relatively clean, thereby improving the unloading efficiency; the protective assembly provided provides power through a rotating motor, drives a winding roller to rotate and move, facilitates the unfolding and storage of a protective net, and also facilitates covering of coal blocks in the carriage, to prevent coal blocks from falling during transportation.

Description

Technical Field

[0001] The invention relates to the technical field of equipment for recovering compressed coal from end walls, and in particular to an equipment for recovering compressed coal from end walls of an open-pit mine for zoned mining and a method for using the equipment. Background Art

[0002] Open-pit mining has become the preferred mining method for major coal-producing countries in the world. China's open-pit mining has experienced a century of development. Thanks to the design units represented by Shenyang Design Institute, which have humbly learned, carefully borrowed, digested and continuously innovated, the proportion of open-pit mining in coal mining has gradually increased. In 2021, the output of open-pit mines reached 725 million tons, accounting for about 19% of the total annual coal production. The open-pit mining industry has made great achievements and entered a new stage of development. However, due to the characteristics of open-pit development, the amount of coal pressure on the side of the open-pit mine is huge, especially in the thick coal seams, such as Shengli East No. 2, where the pressure of coal is as high as 1.5 billion tons. At present, mine cars are often used for the recovery of coal pressure. However, during transportation, the current mine cars will cause coal blocks to fall from the car, which will affect the transportation of the mine cars and bring certain safety hazards to the surrounding staff. In addition, when unloading, the goods can only be unloaded from the top of the mine car, which is more troublesome and laborious, and the unloading is not clean, which is not worthy of wide promotion and application. Summary of the invention

[0003] The object of the present invention is to provide an open-pit mine end-wall coal recovery device for zoned mining and a method of using the device. The door assembly provided in the present invention provides power for opening or closing the upper door and the lower door through the second hydraulic cylinder, and cooperates with the first hydraulic cylinder to facilitate the unloading of the coal blocks in the carriage. The unloading is relatively clean, and the unloading efficiency is improved. The protective assembly provided provides power through a rotating motor to drive the winding roller to rotate and move, which is convenient for the protective net to be unfolded and stored, and also convenient for covering the coal blocks in the carriage to prevent the coal blocks from falling during transportation.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A device for recovering coal from the sidewall of an open-pit mine with zoned mining, comprising a bottom plate, a first hydraulic cylinder, a carriage, a door assembly and a protective assembly, wherein a carriage is rotatably mounted on the top outer wall of the bottom plate, two first hydraulic cylinders are rotatably mounted on the top outer wall of the bottom plate, and one end of a telescopic shaft of the first hydraulic cylinder is rotatably connected to the bottom outer wall of the carriage, a door assembly is arranged on one side of the carriage, and a protective assembly is arranged on the top outer wall of the carriage;

[0006] The door assembly includes a first rotating shaft, an upper door, a first fixed rod, a first connecting rod, a second rotating shaft, a second fixed rod, a second hydraulic cylinder and a lower door. The first rotating shaft is rotatably installed on the top end of one side of the carriage, the upper door is fixed on the outer wall of the first rotating shaft, the first fixed rods are fixed on both ends of the first rotating shaft, the first connecting rod is rotatably installed on the other end of the first fixed rod, the second rotating shaft is rotatably installed on the bottom end of one side of the carriage, the lower door is fixed on the outer wall of the second rotating shaft, second fixed rods are fixed on both ends of the second rotating shaft corresponding to the first connecting rod, and the other end of the first connecting rod is rotatably installed on one end of the second fixed rod, second hydraulic cylinders are fixed on both sides of the carriage corresponding to the second fixed rods, and one end of the telescopic shaft of the second hydraulic cylinder is rotatably connected to the other end of the second fixed rod.

[0007] As a further solution of the present invention: the protection component includes a movable groove, a screw rod, a movable block, an L-shaped mounting block, a fixed ear, a third rotating shaft, a winding roller, a protective net, a first pulley, a first belt, a fixed block, a fourth rotating shaft, a worm, a second pulley, a worm wheel, a third pulley, a second belt, a rotating motor and a fourth pulley, a movable groove is opened on both sides of the carriage, a screw rod is rotatably mounted inside the movable groove, a movable block is sleeved on the outer wall of the screw rod, and the movable block is threadedly connected to the screw rod, an L-shaped mounting block is fixed on one side of the movable block, and a screw rod is fixed on one side of the top end of the carriage. Two fixing ears, a third rotating shaft is rotatably installed on the outer wall between the fixing ears, a winding roller is sleeved on the outer wall of the third rotating shaft, a protective net is wrapped on the outer wall of the winding roller, and the other side of the protective net is fixed to the outer wall between the L-shaped mounting blocks, a third pulley is sleeved on one end of the screw rod passing through the outer wall of the carriage, a second belt is sleeved on the outer wall between the third pulleys, a rotating motor is installed on the outer wall of the carriage located between the third pulleys, a fourth pulley is sleeved on one end of the output shaft of the rotating motor corresponding to the second belt, and the other end of the second belt is sleeved on the outer wall of the fourth pulley.

[0008] As a further solution of the present invention: a first pulley is sleeved on one end of the third rotating shaft passing through the outer wall of the fixed ear, a first belt is sleeved on the outer wall of the first pulley, a fixed block is fixed on one side of the carriage below the screw, a fourth rotating shaft is rotatably installed on one side of the fixed block, a second pulley is sleeved on the outer wall of the fourth rotating shaft corresponding to the first belt, and the other end of the first belt is sleeved on the outer wall of the second pulley, a worm is sleeved on the outer wall of the fourth rotating shaft on one side of the second pulley, a worm is sleeved on the outer wall of one of the screws corresponding to the worm, and a worm wheel is sleeved on the outer wall of one of the screws, and the worm wheel is meshed with the worm.

[0009] As a further solution of the present invention: a roller is arranged on the outer wall of the bottom end of the base plate.

[0010] As a further solution of the present invention: a first traction ring is fixed on one side of the base plate, and a second traction ring is rotatably mounted on the other side of the base plate.

[0011] As a further solution of the present invention: a support block is fixed on the top outer wall of the bottom plate, and the top outer wall of the support block is in contact with the bottom outer wall of the carriage.

[0012] As a further solution of the present invention: when in use, after the car is filled with coal blocks, the rotating motor is started, the rotating motor drives the fourth pulley to rotate, the fourth pulley drives the two third pulleys to rotate through the second belt, the third pulley drives the screw rod to rotate, the screw rod drives the moving block to move, the moving block drives the L-shaped mounting block to move, thereby driving one side of the protective net to move, and at the same time one of the screw rods drives the worm wheel to rotate, the worm wheel drives the worm to rotate, the worm drives the second pulley to rotate, the second pulley drives the first pulley to rotate through the first belt, the first pulley drives the third rotating shaft to rotate, and the third rotating shaft drives the winding roller to rotate, The protective net on the winding roller is rolled up or unfolded so that the protective net can cover the coal blocks in the car to prevent them from falling during transportation. The protective net can also be opened when loading coal blocks. When unloading coal, the second hydraulic cylinder is started, and the second hydraulic cylinder drives the second fixed rod to rotate, and the second fixed rod drives the lower door on the second rotating shaft to open. At the same time, the second fixed rod drives the first fixed rod to rotate through the first connecting rod, and the first fixed rod drives the first rotating shaft to rotate, and the first rotating shaft drives the upper door to open. Then the first hydraulic cylinder is started, and the first hydraulic cylinder lifts one side of the car to unload the coal blocks in the car.

[0013] The beneficial effects of the present invention are as follows: the compartment door assembly provided by the present invention cooperates with the first rotating shaft, the upper compartment door, the first fixed rod, the first connecting rod, the second rotating shaft, the second fixed rod, the second hydraulic cylinder and the lower compartment door. The upper compartment door and the lower compartment door provided on the side of the side mine car provide power for opening or closing the upper compartment door and the lower compartment door through the second hydraulic cylinder, and then cooperate with the first hydraulic cylinder, so as to facilitate the unloading of the coal blocks in the compartment. The unloading is relatively clean, and the unloading efficiency is improved. The provided protective assembly cooperates with the moving groove, the screw rod, the moving block, the L-shaped mounting block, the fixed ear, the third rotating shaft, the winding roller, the protective net, the first pulley, the first belt, the fixed block, the fourth rotating shaft, the worm, the second pulley, the worm wheel, the third pulley, the second belt, the rotating motor and the fourth pulley. The power is provided by the rotating motor to drive the winding roller to rotate and move, which is convenient for the protective net to be unfolded and stored, and it is also convenient to cover the coal blocks in the compartment to prevent the coal blocks from falling during transportation, and it can also protect the staff working around from being injured. It is worthy of wide promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the overall side-view stereoscopic structure of the present invention;

[0017] Figure 3 It is a schematic diagram of the overall rear-view stereoscopic structure of the present invention;

[0018] Figure 4 For the present invention Figure 2 A schematic diagram of the enlarged structure of the middle A area;

[0019] In the figure: 1, bottom plate; 2, roller; 3, first traction ring; 4, second traction ring; 5, support block; 6, first hydraulic cylinder; 7, carriage; 8, door assembly; 9, protection assembly; 81, first rotating shaft; 82, upper door; 83, first fixed rod; 84, first connecting rod; 85, second rotating shaft; 86, second fixed rod; 87, second hydraulic cylinder; 88, lower door; 91, moving groove; 92, screw rod; 93, moving block; 94, L-shaped mounting block; 95, fixing ear; 96, third rotating shaft; 97, winding roller; 98, protection net; 99, first pulley; 910, first belt; 911, fixing block; 912, fourth rotating shaft; 913, worm; 914, second pulley; 915, worm wheel; 916, third pulley; 917, second belt; 918, rotating motor; 919, fourth pulley. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0021] like Figure 1-4As shown, a sectional mining open-pit mine end wall pressure coal recovery device comprises a bottom plate 1, a first hydraulic cylinder 6, a carriage 7, a door assembly 8 and a protection assembly 9. The carriage 7 is rotatably mounted on the top outer wall of the bottom plate 1. Two first hydraulic cylinders 6 are rotatably mounted on the top outer wall of the bottom plate 1, and one end of the telescopic shaft of the first hydraulic cylinder 6 is rotatably connected to the bottom outer wall of the carriage 7. A door assembly 8 is arranged on one side of the carriage 7, and a protection assembly 9 is arranged on the top outer wall of the carriage 7. A roller is arranged on the bottom outer wall of the bottom plate 1. Wheel 2 is more practical and complete, and is convenient for moving the equipment; a first traction ring 3 is fixed on one side of the bottom plate 1, and a second traction ring 4 is rotatably installed on the other side of the bottom plate 1, which is convenient for connecting the first position between the carriages 7 and for pulling the carriage 7 to move by a tractor, which is more practical and complete; a support block 5 is fixed on the top outer wall of the bottom plate 1, and the top outer wall of the support block 5 is in contact with the bottom outer wall of the carriage 7, which is more practical and convenient for supporting the carriage 7 and reducing the pressure of the carriage 7 on the first hydraulic cylinder 6;

[0022] The door assembly 8 includes a first shaft 81, an upper door 82, a first fixing rod 83, a first connecting rod 84, a second shaft 85, a second fixing rod 86, a second hydraulic cylinder 87 and a lower door 88. The first shaft 81 is rotatably mounted on the top of one side of the carriage 7, the upper door 82 is fixed on the outer wall of the first shaft 81, the first fixing rod 83 is fixed on both ends of the first shaft 81, the first connecting rod 84 is rotatably mounted on the other end of the first fixing rod 83, the second shaft 85 is rotatably mounted on the bottom of one side of the carriage 7, and the second shaft 85 A lower compartment door 88 is fixed on the outer wall, and second fixing rods 86 are fixed on both ends of the second rotating shaft 85 corresponding to the first connecting rod 84, and the other end of the first connecting rod 84 is rotatably mounted on one end of the second fixing rod 86. Second hydraulic cylinders 87 are fixed on both sides of the compartment 7 corresponding to the second fixing rod 86, and one end of the telescopic shaft of the second hydraulic cylinder 87 is rotatably connected to the other end of the second fixing rod 86. The structure is simple and the operation is convenient, which makes it easy to open the upper compartment door 82 and the lower compartment door 88, and to unload the coal blocks in the compartment 7, and the unloading is more convenient and labor-saving;

[0023] The protection assembly 9 includes a moving groove 91, a screw rod 92, a moving block 93, an L-shaped mounting block 94, a fixing ear 95, a third rotating shaft 96, a winding roller 97, a protection net 98, a first pulley 99, a first belt 910, a fixing block 911, a fourth rotating shaft 912, a worm 913, a second pulley 914, a worm wheel 915, a third pulley 916, a second belt 917, a rotating motor 918 and a fourth pulley 919. Moving grooves 91 are provided on both sides of the carriage 7. A screw rod 92 is rotatably mounted inside the moving groove 91. A moving block 93 is sleeved on the outer wall of the screw rod 92, and the moving block 93 and the screw rod 92 are connected to each other. Threaded connection, an L-shaped mounting block 94 is fixed on one side of the moving block 93, two fixing ears 95 are fixed on one side of the top of the carriage 7, a third rotating shaft 96 is rotatably mounted on the outer wall between the fixing ears 95, a winding roller 97 is sleeved on the outer wall of the third rotating shaft 96, a protective net 98 is wound on the outer wall of the winding roller 97, and the other side of the protective net 98 is fixed to the outer wall between the L-shaped mounting blocks 94, a third pulley 916 is sleeved on one end of the screw rod 92 passing through the outer wall of the carriage 7, a second belt 917 is sleeved on the outer wall between the third pulleys 916, and a rotating belt 916 is installed on the outer wall of the carriage 7 between the third pulleys 916 Motor 918, a fourth pulley 919 is sleeved on one end of the output shaft of the rotating motor 918 corresponding to the second belt 917, and the other end of the second belt 917 is sleeved on the outer wall of the fourth pulley 919, which is more practical and convenient for driving one side of the protective net 98 to move, so that the protective net 98 can automatically cover the carriage 7, thereby preventing coal blocks from falling; the third rotating shaft 96 is sleeved on one end of the outer wall of the fixed ear 95, and the first pulley 99 is sleeved on the outer wall of the first pulley 99. A first belt 910 is sleeved on the outer wall of the first pulley 99, and a fixed block 911 is fixed on one side of the carriage 7 below the screw rod 92, and a first fixed block 911 is rotatably installed on one side of the fixed block 911. There are four rotating shafts 912, and a second pulley 914 is sleeved on the outer wall of the fourth rotating shaft 912 corresponding to the first belt 910, and the other end of the first belt 910 is sleeved on the outer wall of the second pulley 914. A worm 913 is sleeved on the outer wall of the fourth rotating shaft 912 located on one side of the second pulley 914. A worm wheel 915 is sleeved on the outer wall of one of the lead screws 92 corresponding to the worm 913, and the worm wheel 915 is meshed with the worm 913, which is more practical and convenient for driving the winding roller 97 on the third rotating shaft 96 to rotate. The winding roller 97 drives the protective net 98 to unfold and reel in, which is convenient for covering the coal blocks in the carriage 7, and is more practical.

[0024] The working principle of the present invention is as follows: when in use, after the carriage 7 is filled with coal blocks, the rotating motor 918 is started, the rotating motor 918 drives the fourth pulley 919 to rotate, the fourth pulley 919 drives the two third pulleys 916 to rotate through the second belt 917, the third pulley 916 drives the screw rod 92 to rotate, the screw rod 92 drives the moving block 93 to move, the moving block 93 drives the L-shaped mounting block 94 to move, thereby driving one side of the protective net 98 to move, and at the same time one of the screw rods 92 drives the worm wheel 915 to rotate, the worm wheel 915 drives the worm 913 to rotate, the worm 913 drives the second pulley 914 to rotate, the second pulley 914 drives the first pulley 99 to rotate through the first belt 910, the first pulley 99 drives the third rotating shaft 96 to rotate, and the third rotating shaft 96 drives the winding roller 97 to rotate, and reels or unfolds the protective net 98 on the winding roller 97, so that the protective net 98 can cover the coal blocks in the carriage 7 to prevent the coal blocks from falling during transportation. When loading coal blocks, the protective net 98 can also be opened; when unloading coal, the second hydraulic cylinder 87 is started, and the second hydraulic cylinder 87 drives the second fixed rod 86 to rotate, and the second fixed rod 86 drives the lower compartment door 88 on the second rotating shaft 85 to open. At the same time, the second fixed rod 86 drives the first fixed rod 83 to rotate through the first connecting rod 84, and the first fixed rod 83 drives the first rotating shaft 81 to rotate, and the first rotating shaft 81 drives the upper compartment door 82 to open, and then the first hydraulic cylinder 6 is started, and the first hydraulic cylinder 6 lifts one side of the carriage 7, thereby unloading the coal blocks in the carriage 7.

[0025] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for recovering coal from the sidewall of an open-pit mine with zoned mining, characterized in that: It includes a bottom plate, a first hydraulic cylinder, a carriage, a door assembly and a protection assembly, wherein a carriage is rotatably mounted on the top outer wall of the bottom plate, two first hydraulic cylinders are rotatably mounted on the top outer wall of the bottom plate, and one end of the telescopic shaft of the first hydraulic cylinder is rotatably connected to the bottom outer wall of the carriage, a door assembly is arranged on one side of the carriage, and a protection assembly is arranged on the top outer wall of the carriage; The door assembly includes a first rotating shaft, an upper door, a first fixed rod, a first connecting rod, a second rotating shaft, a second fixed rod, a second hydraulic cylinder and a lower door, the first rotating shaft is rotatably installed on the top end of one side of the carriage, the upper door is fixed on the outer wall of the first rotating shaft, the first fixed rods are fixed on both ends of the first rotating shaft, the first connecting rod is rotatably installed on the other end of the first fixed rod, the second rotating shaft is rotatably installed on the bottom end of one side of the carriage, the lower door is fixed on the outer wall of the second rotating shaft, the second fixed rods are fixed on both ends of the second rotating shaft corresponding to the first connecting rod, and the other end of the first connecting rod is rotatably installed on one end of the second fixed rod, second hydraulic cylinders are fixed on both sides of the carriage corresponding to the second fixed rods, and one end of the telescopic shaft of the second hydraulic cylinder is rotatably connected with the other end of the second fixed rod; The protection assembly includes a moving groove, a screw rod, a moving block, an L-shaped mounting block, a fixed ear, a third rotating shaft, a winding roller, a protection net, a first pulley, a first belt, a fixed block, a fourth rotating shaft, a worm, a second pulley, a worm wheel, a third pulley, a second belt, a rotating motor and a fourth pulley. Moving grooves are provided on both sides of the carriage, a screw rod is rotatably mounted inside the moving groove, a moving block is sleeved on the outer wall of the screw rod, and the moving block is threadedly connected to the screw rod, an L-shaped mounting block is fixed on one side of the moving block, and two fixing ears are fixed on one side of the top end of the carriage. The third rotating shaft is rotatably mounted on the outer wall between the fixing ears, a winding roller is sleeved on the outer wall of the third rotating shaft, a protective net is wrapped on the outer wall of the winding roller, and the other side of the protective net is fixed to the outer wall between the L-shaped mounting blocks, a third pulley is sleeved on one end of the screw rod passing through the outer wall of the carriage, a second belt is sleeved on the outer wall between the third pulleys, a rotating motor is mounted on the outer wall of the carriage between the third pulleys, a fourth pulley is sleeved on one end of the output shaft of the rotating motor corresponding to the second belt, and the other end of the second belt is sleeved on the outer wall of the fourth pulley.

2. The device for recovering coal from the sidewall of an open-pit mine with zoned mining according to claim 1, characterized in that: The first and second rotating shafts are configured to be connected to a pair of rotating shafts, each of which is connected to a pair of rotating shafts, and the rotating shafts are connected to the pair of rotating shafts. The rotating shafts are connected to the pair of rotating shafts at two different times. The rotating shafts are connected to the pair of rotating shafts at two different times.

3. The device for recovering coal from the sidewall of an open-pit mine with zoned mining according to claim 1 is characterized in that: A roller is arranged on the outer wall of the bottom end of the bottom plate.

4. The device for recovering coal from the sidewall of an open-pit mine with zoned mining according to claim 1, characterized in that: A first traction ring is fixed on one side of the base plate, and a second traction ring is rotatably mounted on the other side of the base plate.

5. The device for recovering compressed coal from open-pit mines with zoned mining according to claim 1, characterized in that: A support block is fixed on the top outer wall of the bottom plate, and the top outer wall of the support block is in contact with the bottom outer wall of the carriage.

6. The method for using the open-pit mine end pressure coal recovery device for zoned mining according to claim 1 is characterized in that: When in use, after the carriage is filled with coal blocks, the rotating motor is started, the rotating motor drives the fourth pulley to rotate, the fourth pulley drives the two third pulleys to rotate through the second belt, the third pulley drives the screw rod to rotate, the screw rod drives the moving block to move, the moving block drives the L-shaped mounting block to move, thereby driving one side of the protective net to move, and at the same time one of the screw rods drives the worm wheel to rotate, the worm wheel drives the worm to rotate, the worm drives the second pulley to rotate, the second pulley drives the first pulley to rotate through the first belt, the first pulley drives the third rotating shaft to rotate, the third rotating shaft drives the winding roller to rotate, The protective net on the carriage is rolled up or unfolded, so that the protective net covers the coal blocks in the carriage to prevent the coal blocks from falling during transportation. When loading the coal blocks, the protective net is opened; when unloading the coal, the second hydraulic cylinder is started, the second hydraulic cylinder drives the second fixed rod to rotate, and the second fixed rod drives the lower compartment door on the second rotating shaft to open. At the same time, the second fixed rod drives the first fixed rod to rotate through the first connecting rod, the first fixed rod drives the first rotating shaft to rotate, and the first rotating shaft drives the upper compartment door to open, and then the first hydraulic cylinder is started, and the first hydraulic cylinder lifts one side of the carriage to unload the coal blocks in the carriage.

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